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Unified Diff: observatory_pub_packages/analyzer/src/generated/engine.dart

Issue 816693004: Add observatory_pub_packages snapshot to third_party (Closed) Base URL: http://dart.googlecode.com/svn/third_party/
Patch Set: Created 6 years ago
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Index: observatory_pub_packages/analyzer/src/generated/engine.dart
===================================================================
--- observatory_pub_packages/analyzer/src/generated/engine.dart (revision 0)
+++ observatory_pub_packages/analyzer/src/generated/engine.dart (working copy)
@@ -0,0 +1,15507 @@
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// This code was auto-generated, is not intended to be edited, and is subject to
+// significant change. Please see the README file for more information.
+
+library engine;
+
+import 'dart:collection';
+import 'java_core.dart';
+import 'java_engine.dart';
+import 'utilities_collection.dart';
+import 'utilities_general.dart';
+import 'instrumentation.dart';
+import 'error.dart';
+import 'source.dart';
+import 'scanner.dart';
+import 'ast.dart';
+import 'parser.dart' show Parser, IncrementalParser;
+import 'sdk.dart' show DartSdk;
+import 'constant.dart';
+import 'element.dart';
+import 'resolver.dart';
+import 'html.dart' as ht;
+
+/**
+ * Instances of the class `AnalysisCache` implement an LRU cache of information related to
+ * analysis.
+ */
+class AnalysisCache {
+ /**
+ * An array containing the partitions of which this cache is comprised.
+ */
+ final List<CachePartition> _partitions;
+
+ /**
+ * A flag used to control whether trace information should be produced when the content of the
+ * cache is modified.
+ */
+ static bool _TRACE_CHANGES = false;
+
+ /**
+ * Initialize a newly created cache to have the given partitions. The partitions will be searched
+ * in the order in which they appear in the array, so the most specific partition (usually an
+ * [SdkCachePartition]) should be first and the most general (usually a
+ * [UniversalCachePartition]) last.
+ *
+ * @param partitions the partitions for the newly created cache
+ */
+ AnalysisCache(this._partitions);
+
+ /**
+ * Record that the AST associated with the given source was just read from the cache.
+ *
+ * @param source the source whose AST was accessed
+ */
+ void accessedAst(Source source) {
+ int count = _partitions.length;
+ for (int i = 0; i < count; i++) {
+ if (_partitions[i].contains(source)) {
+ _partitions[i].accessedAst(source);
+ return;
+ }
+ }
+ }
+
+ /**
+ * Return the entry associated with the given source.
+ *
+ * @param source the source whose entry is to be returned
+ * @return the entry associated with the given source
+ */
+ SourceEntry get(Source source) {
+ int count = _partitions.length;
+ for (int i = 0; i < count; i++) {
+ if (_partitions[i].contains(source)) {
+ return _partitions[i].get(source);
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Return the number of entries in this cache that have an AST associated with them.
+ *
+ * @return the number of entries in this cache that have an AST associated with them
+ */
+ int get astSize => _partitions[_partitions.length - 1].astSize;
+
+ /**
+ * Return information about each of the partitions in this cache.
+ *
+ * @return information about each of the partitions in this cache
+ */
+ List<AnalysisContextStatistics_PartitionData> get partitionData {
+ int count = _partitions.length;
+ List<AnalysisContextStatistics_PartitionData> data = new List<AnalysisContextStatistics_PartitionData>(count);
+ for (int i = 0; i < count; i++) {
+ CachePartition partition = _partitions[i];
+ data[i] = new AnalysisContextStatisticsImpl_PartitionDataImpl(partition.astSize, partition.map.length);
+ }
+ return data;
+ }
+
+ /**
+ * Return an iterator returning all of the map entries mapping sources to cache entries.
+ *
+ * @return an iterator returning all of the map entries mapping sources to cache entries
+ */
+ MapIterator<Source, SourceEntry> iterator() {
+ int count = _partitions.length;
+ List<Map<Source, SourceEntry>> maps = new List<Map>(count);
+ for (int i = 0; i < count; i++) {
+ maps[i] = _partitions[i].map;
+ }
+ return new MultipleMapIterator<Source, SourceEntry>(maps);
+ }
+
+ /**
+ * Associate the given entry with the given source.
+ *
+ * @param source the source with which the entry is to be associated
+ * @param entry the entry to be associated with the source
+ */
+ void put(Source source, SourceEntry entry) {
+ (entry as SourceEntryImpl).fixExceptionState();
+ int count = _partitions.length;
+ for (int i = 0; i < count; i++) {
+ if (_partitions[i].contains(source)) {
+ if (_TRACE_CHANGES) {
+ try {
+ SourceEntry oldEntry = _partitions[i].get(source);
+ if (oldEntry == null) {
+ AnalysisEngine.instance.logger.logInformation("Added a cache entry for '${source.fullName}'.");
+ } else {
+ AnalysisEngine.instance.logger.logInformation("Modified the cache entry for ${source.fullName}'. Diff = ${(entry as SourceEntryImpl).getDiff(oldEntry)}");
+ }
+ } catch (exception) {
+ // Ignored
+ JavaSystem.currentTimeMillis();
+ }
+ }
+ _partitions[i].put(source, entry);
+ return;
+ }
+ }
+ }
+
+ /**
+ * Remove all information related to the given source from this cache.
+ *
+ * @param source the source to be removed
+ */
+ void remove(Source source) {
+ int count = _partitions.length;
+ for (int i = 0; i < count; i++) {
+ if (_partitions[i].contains(source)) {
+ if (_TRACE_CHANGES) {
+ try {
+ AnalysisEngine.instance.logger.logInformation("Removed the cache entry for ${source.fullName}'.");
+ } catch (exception) {
+ // Ignored
+ JavaSystem.currentTimeMillis();
+ }
+ }
+ _partitions[i].remove(source);
+ return;
+ }
+ }
+ }
+
+ /**
+ * Record that the AST associated with the given source was just removed from the cache.
+ *
+ * @param source the source whose AST was removed
+ */
+ void removedAst(Source source) {
+ int count = _partitions.length;
+ for (int i = 0; i < count; i++) {
+ if (_partitions[i].contains(source)) {
+ _partitions[i].removedAst(source);
+ return;
+ }
+ }
+ }
+
+ /**
+ * Return the number of sources that are mapped to cache entries.
+ *
+ * @return the number of sources that are mapped to cache entries
+ */
+ int size() {
+ int size = 0;
+ int count = _partitions.length;
+ for (int i = 0; i < count; i++) {
+ size += _partitions[i].size();
+ }
+ return size;
+ }
+
+ /**
+ * Record that the AST associated with the given source was just stored to the cache.
+ *
+ * @param source the source whose AST was stored
+ */
+ void storedAst(Source source) {
+ int count = _partitions.length;
+ for (int i = 0; i < count; i++) {
+ if (_partitions[i].contains(source)) {
+ _partitions[i].storedAst(source);
+ return;
+ }
+ }
+ }
+}
+
+/**
+ * The interface `AnalysisContext` defines the behavior of objects that represent a context in
+ * which a single analysis can be performed and incrementally maintained. The context includes such
+ * information as the version of the SDK being analyzed against as well as the package-root used to
+ * resolve 'package:' URI's. (Both of which are known indirectly through the [SourceFactory
+ ].)
+ *
+ * An analysis context also represents the state of the analysis, which includes knowing which
+ * sources have been included in the analysis (either directly or indirectly) and the results of the
+ * analysis. Sources must be added and removed from the context using the method
+ * [applyChanges], which is also used to notify the context when sources have been
+ * modified and, consequently, previously known results might have been invalidated.
+ *
+ * There are two ways to access the results of the analysis. The most common is to use one of the
+ * 'get' methods to access the results. The 'get' methods have the advantage that they will always
+ * return quickly, but have the disadvantage that if the results are not currently available they
+ * will return either nothing or in some cases an incomplete result. The second way to access
+ * results is by using one of the 'compute' methods. The 'compute' methods will always attempt to
+ * compute the requested results but might block the caller for a significant period of time.
+ *
+ * When results have been invalidated, have never been computed (as is the case for newly added
+ * sources), or have been removed from the cache, they are <b>not</b> automatically recreated. They
+ * will only be recreated if one of the 'compute' methods is invoked.
+ *
+ * However, this is not always acceptable. Some clients need to keep the analysis results
+ * up-to-date. For such clients there is a mechanism that allows them to incrementally perform
+ * needed analysis and get notified of the consequent changes to the analysis results. This
+ * mechanism is realized by the method [performAnalysisTask].
+ *
+ * Analysis engine allows for having more than one context. This can be used, for example, to
+ * perform one analysis based on the state of files on disk and a separate analysis based on the
+ * state of those files in open editors. It can also be used to perform an analysis based on a
+ * proposed future state, such as the state after a refactoring.
+ */
+abstract class AnalysisContext {
+ /**
+ * Add the given listener to the list of objects that are to be notified when various analysis
+ * results are produced in this context.
+ *
+ * @param listener the listener to be added
+ */
+ void addListener(AnalysisListener listener);
+
+ /**
+ * Apply the given delta to change the level of analysis that will be performed for the sources
+ * known to this context.
+ *
+ * @param delta a description of the level of analysis that should be performed for some sources
+ */
+ void applyAnalysisDelta(AnalysisDelta delta);
+
+ /**
+ * Apply the changes specified by the given change set to this context. Any analysis results that
+ * have been invalidated by these changes will be removed.
+ *
+ * @param changeSet a description of the changes that are to be applied
+ */
+ void applyChanges(ChangeSet changeSet);
+
+ /**
+ * Return the documentation comment for the given element as it appears in the original source
+ * (complete with the beginning and ending delimiters) for block documentation comments, or lines
+ * starting with `"///"` and separated with `"\n"` characters for end-of-line
+ * documentation comments, or `null` if the element does not have a documentation comment
+ * associated with it. This can be a long-running operation if the information needed to access
+ * the comment is not cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param element the element whose documentation comment is to be returned
+ * @return the element's documentation comment
+ * @throws AnalysisException if the documentation comment could not be determined because the
+ * analysis could not be performed
+ */
+ String computeDocumentationComment(Element element);
+
+ /**
+ * Return an array containing all of the errors associated with the given source. If the errors
+ * are not already known then the source will be analyzed in order to determine the errors
+ * associated with it.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source whose errors are to be returned
+ * @return all of the errors associated with the given source
+ * @throws AnalysisException if the errors could not be determined because the analysis could not
+ * be performed
+ * @see #getErrors(Source)
+ */
+ List<AnalysisError> computeErrors(Source source);
+
+ /**
+ * Return the element model corresponding to the HTML file defined by the given source. If the
+ * element model does not yet exist it will be created. The process of creating an element model
+ * for an HTML file can be long-running, depending on the size of the file and the number of
+ * libraries that are defined in it (via script tags) that also need to have a model built for
+ * them.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source defining the HTML file whose element model is to be returned
+ * @return the element model corresponding to the HTML file defined by the given source
+ * @throws AnalysisException if the element model could not be determined because the analysis
+ * could not be performed
+ * @see #getHtmlElement(Source)
+ */
+ HtmlElement computeHtmlElement(Source source);
+
+ /**
+ * Return the kind of the given source, computing it's kind if it is not already known. Return
+ * [SourceKind#UNKNOWN] if the source is not contained in this context.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source whose kind is to be returned
+ * @return the kind of the given source
+ * @see #getKindOf(Source)
+ */
+ SourceKind computeKindOf(Source source);
+
+ /**
+ * Return the element model corresponding to the library defined by the given source. If the
+ * element model does not yet exist it will be created. The process of creating an element model
+ * for a library can long-running, depending on the size of the library and the number of
+ * libraries that are imported into it that also need to have a model built for them.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source defining the library whose element model is to be returned
+ * @return the element model corresponding to the library defined by the given source
+ * @throws AnalysisException if the element model could not be determined because the analysis
+ * could not be performed
+ * @see #getLibraryElement(Source)
+ */
+ LibraryElement computeLibraryElement(Source source);
+
+ /**
+ * Return the line information for the given source, or `null` if the source is not of a
+ * recognized kind (neither a Dart nor HTML file). If the line information was not previously
+ * known it will be created. The line information is used to map offsets from the beginning of the
+ * source to line and column pairs.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source whose line information is to be returned
+ * @return the line information for the given source
+ * @throws AnalysisException if the line information could not be determined because the analysis
+ * could not be performed
+ * @see #getLineInfo(Source)
+ */
+ LineInfo computeLineInfo(Source source);
+
+ /**
+ * Notifies the context that the client is going to stop using this context.
+ */
+ void dispose();
+
+ /**
+ * Return `true` if the given source exists.
+ *
+ * This method should be used rather than the method [Source#exists] because contexts can
+ * have local overrides of the content of a source that the source is not aware of and a source
+ * with local content is considered to exist even if there is no file on disk.
+ *
+ * @param source the source whose modification stamp is to be returned
+ * @return `true` if the source exists
+ */
+ bool exists(Source source);
+
+ /**
+ * Create a new context in which analysis can be performed. Any sources in the specified container
+ * will be removed from this context and added to the newly created context.
+ *
+ * @param container the container containing sources that should be removed from this context and
+ * added to the returned context
+ * @return the analysis context that was created
+ */
+ AnalysisContext extractContext(SourceContainer container);
+
+ /**
+ * Return the set of analysis options controlling the behavior of this context. Clients should not
+ * modify the returned set of options. The options should only be set by invoking the method
+ * [setAnalysisOptions].
+ *
+ * @return the set of analysis options controlling the behavior of this context
+ */
+ AnalysisOptions get analysisOptions;
+
+ /**
+ * Return the Angular application that contains the HTML file defined by the given source, or
+ * `null` if the source does not represent an HTML file, the Angular application containing
+ * the file has not yet been resolved, or the analysis of the HTML file failed for some reason.
+ *
+ * @param htmlSource the source defining the HTML file
+ * @return the Angular application that contains the HTML file defined by the given source
+ */
+ AngularApplication getAngularApplicationWithHtml(Source htmlSource);
+
+ /**
+ * Return the element model corresponding to the compilation unit defined by the given source in
+ * the library defined by the given source, or `null` if the element model does not
+ * currently exist or if the library cannot be analyzed for some reason.
+ *
+ * @param unitSource the source of the compilation unit
+ * @param librarySource the source of the defining compilation unit of the library containing the
+ * compilation unit
+ * @return the element model corresponding to the compilation unit defined by the given source
+ */
+ CompilationUnitElement getCompilationUnitElement(Source unitSource, Source librarySource);
+
+ /**
+ * Get the contents and timestamp of the given source.
+ *
+ * This method should be used rather than the method [Source#getContents] because contexts
+ * can have local overrides of the content of a source that the source is not aware of.
+ *
+ * @param source the source whose content is to be returned
+ * @return the contents and timestamp of the source
+ * @throws Exception if the contents of the source could not be accessed
+ */
+ TimestampedData<String> getContents(Source source);
+
+ /**
+ * Return the set of declared variables used when computing constant values.
+ *
+ * @return the set of declared variables used when computing constant values
+ */
+ DeclaredVariables get declaredVariables;
+
+ /**
+ * Return the element referenced by the given location, or `null` if the element is not
+ * immediately available or if there is no element with the given location. The latter condition
+ * can occur, for example, if the location describes an element from a different context or if the
+ * element has been removed from this context as a result of some change since it was originally
+ * obtained.
+ *
+ * @param location the reference describing the element to be returned
+ * @return the element referenced by the given location
+ */
+ Element getElement(ElementLocation location);
+
+ /**
+ * Return an analysis error info containing the array of all of the errors and the line info
+ * associated with the given source. The array of errors will be empty if the source is not known
+ * to this context or if there are no errors in the source. The errors contained in the array can
+ * be incomplete.
+ *
+ * @param source the source whose errors are to be returned
+ * @return all of the errors associated with the given source and the line info
+ * @see #computeErrors(Source)
+ */
+ AnalysisErrorInfo getErrors(Source source);
+
+ /**
+ * Return the element model corresponding to the HTML file defined by the given source, or
+ * `null` if the source does not represent an HTML file, the element representing the file
+ * has not yet been created, or the analysis of the HTML file failed for some reason.
+ *
+ * @param source the source defining the HTML file whose element model is to be returned
+ * @return the element model corresponding to the HTML file defined by the given source
+ * @see #computeHtmlElement(Source)
+ */
+ HtmlElement getHtmlElement(Source source);
+
+ /**
+ * Return the sources for the HTML files that reference the given compilation unit. If the source
+ * does not represent a Dart source or is not known to this context, the returned array will be
+ * empty. The contents of the array can be incomplete.
+ *
+ * @param source the source referenced by the returned HTML files
+ * @return the sources for the HTML files that reference the given compilation unit
+ */
+ List<Source> getHtmlFilesReferencing(Source source);
+
+ /**
+ * Return an array containing all of the sources known to this context that represent HTML files.
+ * The contents of the array can be incomplete.
+ *
+ * @return the sources known to this context that represent HTML files
+ */
+ List<Source> get htmlSources;
+
+ /**
+ * Return the kind of the given source, or `null` if the kind is not known to this context.
+ *
+ * @param source the source whose kind is to be returned
+ * @return the kind of the given source
+ * @see #computeKindOf(Source)
+ */
+ SourceKind getKindOf(Source source);
+
+ /**
+ * Return an array containing all of the sources known to this context that represent the defining
+ * compilation unit of a library that can be run within a browser. The sources that are returned
+ * represent libraries that have a 'main' method and are either referenced by an HTML file or
+ * import, directly or indirectly, a client-only library. The contents of the array can be
+ * incomplete.
+ *
+ * @return the sources known to this context that represent the defining compilation unit of a
+ * library that can be run within a browser
+ */
+ List<Source> get launchableClientLibrarySources;
+
+ /**
+ * Return an array containing all of the sources known to this context that represent the defining
+ * compilation unit of a library that can be run outside of a browser. The contents of the array
+ * can be incomplete.
+ *
+ * @return the sources known to this context that represent the defining compilation unit of a
+ * library that can be run outside of a browser
+ */
+ List<Source> get launchableServerLibrarySources;
+
+ /**
+ * Return the sources for the defining compilation units of any libraries of which the given
+ * source is a part. The array will normally contain a single library because most Dart sources
+ * are only included in a single library, but it is possible to have a part that is contained in
+ * multiple identically named libraries. If the source represents the defining compilation unit of
+ * a library, then the returned array will contain the given source as its only element. If the
+ * source does not represent a Dart source or is not known to this context, the returned array
+ * will be empty. The contents of the array can be incomplete.
+ *
+ * @param source the source contained in the returned libraries
+ * @return the sources for the libraries containing the given source
+ */
+ List<Source> getLibrariesContaining(Source source);
+
+ /**
+ * Return the sources for the defining compilation units of any libraries that depend on the given
+ * library. One library depends on another if it either imports or exports that library.
+ *
+ * @param librarySource the source for the defining compilation unit of the library being depended
+ * on
+ * @return the sources for the libraries that depend on the given library
+ */
+ List<Source> getLibrariesDependingOn(Source librarySource);
+
+ /**
+ * Return the sources for the defining compilation units of any libraries that are referenced from
+ * the given HTML file.
+ *
+ * @param htmlSource the source for the HTML file
+ * @return the sources for the libraries that are referenced by the given HTML file
+ */
+ List<Source> getLibrariesReferencedFromHtml(Source htmlSource);
+
+ /**
+ * Return the element model corresponding to the library defined by the given source, or
+ * `null` if the element model does not currently exist or if the library cannot be analyzed
+ * for some reason.
+ *
+ * @param source the source defining the library whose element model is to be returned
+ * @return the element model corresponding to the library defined by the given source
+ */
+ LibraryElement getLibraryElement(Source source);
+
+ /**
+ * Return an array containing all of the sources known to this context that represent the defining
+ * compilation unit of a library. The contents of the array can be incomplete.
+ *
+ * @return the sources known to this context that represent the defining compilation unit of a
+ * library
+ */
+ List<Source> get librarySources;
+
+ /**
+ * Return the line information for the given source, or `null` if the line information is
+ * not known. The line information is used to map offsets from the beginning of the source to line
+ * and column pairs.
+ *
+ * @param source the source whose line information is to be returned
+ * @return the line information for the given source
+ * @see #computeLineInfo(Source)
+ */
+ LineInfo getLineInfo(Source source);
+
+ /**
+ * Return the modification stamp for the given source. A modification stamp is a non-negative
+ * integer with the property that if the contents of the source have not been modified since the
+ * last time the modification stamp was accessed then the same value will be returned, but if the
+ * contents of the source have been modified one or more times (even if the net change is zero)
+ * the stamps will be different.
+ *
+ * This method should be used rather than the method [Source#getModificationStamp] because
+ * contexts can have local overrides of the content of a source that the source is not aware of.
+ *
+ * @param source the source whose modification stamp is to be returned
+ * @return the modification stamp for the source
+ */
+ int getModificationStamp(Source source);
+
+ /**
+ * Return an array containing all of the sources known to this context and their resolution state
+ * is not valid or flush. So, these sources are not safe to update during refactoring, because we
+ * may be don't know all the references in them.
+ *
+ * @return the sources known to this context and are not safe for refactoring
+ */
+ List<Source> get refactoringUnsafeSources;
+
+ /**
+ * Return a fully resolved AST for a single compilation unit within the given library, or
+ * `null` if the resolved AST is not already computed.
+ *
+ * @param unitSource the source of the compilation unit
+ * @param library the library containing the compilation unit
+ * @return a fully resolved AST for the compilation unit
+ * @see #resolveCompilationUnit(Source, LibraryElement)
+ */
+ CompilationUnit getResolvedCompilationUnit(Source unitSource, LibraryElement library);
+
+ /**
+ * Return a fully resolved AST for a single compilation unit within the given library, or
+ * `null` if the resolved AST is not already computed.
+ *
+ * @param unitSource the source of the compilation unit
+ * @param librarySource the source of the defining compilation unit of the library containing the
+ * compilation unit
+ * @return a fully resolved AST for the compilation unit
+ * @see #resolveCompilationUnit(Source, Source)
+ */
+ CompilationUnit getResolvedCompilationUnit2(Source unitSource, Source librarySource);
+
+ /**
+ * Return a fully resolved HTML unit, or `null` if the resolved unit is not already
+ * computed.
+ *
+ * @param htmlSource the source of the HTML unit
+ * @return a fully resolved HTML unit
+ * @see #resolveHtmlUnit(Source)
+ */
+ ht.HtmlUnit getResolvedHtmlUnit(Source htmlSource);
+
+ /**
+ * Return the source factory used to create the sources that can be analyzed in this context.
+ *
+ * @return the source factory used to create the sources that can be analyzed in this context
+ */
+ SourceFactory get sourceFactory;
+
+ /**
+ * Return `true` if the given source is known to be the defining compilation unit of a
+ * library that can be run on a client (references 'dart:html', either directly or indirectly).
+ *
+ * <b>Note:</b> In addition to the expected case of returning `false` if the source is known
+ * to be a library that cannot be run on a client, this method will also return `false` if
+ * the source is not known to be a library or if we do not know whether it can be run on a client.
+ *
+ * @param librarySource the source being tested
+ * @return `true` if the given source is known to be a library that can be run on a client
+ */
+ bool isClientLibrary(Source librarySource);
+
+ /**
+ * Returns `true` if this context was disposed using [dispose].
+ *
+ * @return `true` if this context was disposed
+ */
+ bool get isDisposed;
+
+ /**
+ * Return `true` if the given source is known to be the defining compilation unit of a
+ * library that can be run on the server (does not reference 'dart:html', either directly or
+ * indirectly).
+ *
+ * <b>Note:</b> In addition to the expected case of returning `false` if the source is known
+ * to be a library that cannot be run on the server, this method will also return `false` if
+ * the source is not known to be a library or if we do not know whether it can be run on the
+ * server.
+ *
+ * @param librarySource the source being tested
+ * @return `true` if the given source is known to be a library that can be run on the server
+ */
+ bool isServerLibrary(Source librarySource);
+
+ /**
+ * Add the sources contained in the specified context to this context's collection of sources.
+ * This method is called when an existing context's pubspec has been removed, and the contained
+ * sources should be reanalyzed as part of this context.
+ *
+ * @param context the context being merged
+ */
+ void mergeContext(AnalysisContext context);
+
+ /**
+ * Parse a single source to produce an AST structure. The resulting AST structure may or may not
+ * be resolved, and may have a slightly different structure depending upon whether it is resolved.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source to be parsed
+ * @return the AST structure representing the content of the source
+ * @throws AnalysisException if the analysis could not be performed
+ */
+ CompilationUnit parseCompilationUnit(Source source);
+
+ /**
+ * Parse a single HTML source to produce an AST structure. The resulting HTML AST structure may or
+ * may not be resolved, and may have a slightly different structure depending upon whether it is
+ * resolved.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the HTML source to be parsed
+ * @return the parse result (not `null`)
+ * @throws AnalysisException if the analysis could not be performed
+ */
+ ht.HtmlUnit parseHtmlUnit(Source source);
+
+ /**
+ * Perform the next unit of work required to keep the analysis results up-to-date and return
+ * information about the consequent changes to the analysis results. This method can be long
+ * running.
+ *
+ * @return the results of performing the analysis
+ */
+ AnalysisResult performAnalysisTask();
+
+ /**
+ * Remove the given listener from the list of objects that are to be notified when various
+ * analysis results are produced in this context.
+ *
+ * @param listener the listener to be removed
+ */
+ void removeListener(AnalysisListener listener);
+
+ /**
+ * Parse and resolve a single source within the given context to produce a fully resolved AST.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source to be parsed and resolved
+ * @param library the library containing the source to be resolved
+ * @return the result of resolving the AST structure representing the content of the source in the
+ * context of the given library
+ * @throws AnalysisException if the analysis could not be performed
+ * @see #getResolvedCompilationUnit(Source, LibraryElement)
+ */
+ CompilationUnit resolveCompilationUnit(Source unitSource, LibraryElement library);
+
+ /**
+ * Parse and resolve a single source within the given context to produce a fully resolved AST.
+ * Return the resolved AST structure, or `null` if the source could not be either parsed or
+ * resolved.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source to be parsed and resolved
+ * @param librarySource the source of the defining compilation unit of the library containing the
+ * source to be resolved
+ * @return the result of resolving the AST structure representing the content of the source in the
+ * context of the given library
+ * @throws AnalysisException if the analysis could not be performed
+ * @see #getResolvedCompilationUnit(Source, Source)
+ */
+ CompilationUnit resolveCompilationUnit2(Source unitSource, Source librarySource);
+
+ /**
+ * Parse and resolve a single source within the given context to produce a fully resolved AST.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param htmlSource the source to be parsed and resolved
+ * @return the result of resolving the AST structure representing the content of the source
+ * @throws AnalysisException if the analysis could not be performed
+ */
+ ht.HtmlUnit resolveHtmlUnit(Source htmlSource);
+
+ /**
+ * Set the set of analysis options controlling the behavior of this context to the given options.
+ * Clients can safely assume that all necessary analysis results have been invalidated.
+ *
+ * @param options the set of analysis options that will control the behavior of this context
+ */
+ void set analysisOptions(AnalysisOptions options);
+
+ /**
+ * Set the order in which sources will be analyzed by [performAnalysisTask] to match the
+ * order of the sources in the given list. If a source that needs to be analyzed is not contained
+ * in the list, then it will be treated as if it were at the end of the list. If the list is empty
+ * (or `null`) then no sources will be given priority over other sources.
+ *
+ * Changes made to the list after this method returns will <b>not</b> be reflected in the priority
+ * order.
+ *
+ * @param sources the sources to be given priority over other sources
+ */
+ void set analysisPriorityOrder(List<Source> sources);
+
+ /**
+ * Set the contents of the given source to the given contents and mark the source as having
+ * changed. The additional offset and length information is used by the context to determine what
+ * reanalysis is necessary.
+ *
+ * @param source the source whose contents are being overridden
+ * @param contents the text to replace the range in the current contents
+ * @param offset the offset into the current contents
+ * @param oldLength the number of characters in the original contents that were replaced
+ * @param newLength the number of characters in the replacement text
+ */
+ void setChangedContents(Source source, String contents, int offset, int oldLength, int newLength);
+
+ /**
+ * Set the contents of the given source to the given contents and mark the source as having
+ * changed. This has the effect of overriding the default contents of the source. If the contents
+ * are `null` the override is removed so that the default contents will be returned.
+ *
+ * @param source the source whose contents are being overridden
+ * @param contents the new contents of the source
+ */
+ void setContents(Source source, String contents);
+
+ /**
+ * Set the source factory used to create the sources that can be analyzed in this context to the
+ * given source factory. Clients can safely assume that all analysis results have been
+ * invalidated.
+ *
+ * @param factory the source factory used to create the sources that can be analyzed in this
+ * context
+ */
+ void set sourceFactory(SourceFactory factory);
+}
+
+/**
+ * Instances of the class `AnalysisContextImpl` implement an [AnalysisContext].
+ */
+class AnalysisContextImpl implements InternalAnalysisContext {
+ /**
+ * The difference between the maximum cache size and the maximum priority order size. The priority
+ * list must be capped so that it is less than the cache size. Failure to do so can result in an
+ * infinite loop in performAnalysisTask() because re-caching one AST structure can cause another
+ * priority source's AST structure to be flushed.
+ */
+ static int _PRIORITY_ORDER_SIZE_DELTA = 4;
+
+ /**
+ * A flag indicating whether trace output should be produced as analysis tasks are performed. Used
+ * for debugging.
+ */
+ static bool _TRACE_PERFORM_TASK = false;
+
+ /**
+ * The set of analysis options controlling the behavior of this context.
+ */
+ AnalysisOptionsImpl _options = new AnalysisOptionsImpl();
+
+ /**
+ * A flag indicating whether errors related to sources in the SDK should be generated and
+ * reported.
+ */
+ bool _generateSdkErrors = true;
+
+ /**
+ * A flag indicating whether this context is disposed.
+ */
+ bool _disposed = false;
+
+ /**
+ * A cache of content used to override the default content of a source.
+ */
+ ContentCache _contentCache = new ContentCache();
+
+ /**
+ * The source factory used to create the sources that can be analyzed in this context.
+ */
+ SourceFactory _sourceFactory;
+
+ /**
+ * The set of declared variables used when computing constant values.
+ */
+ DeclaredVariables _declaredVariables = new DeclaredVariables();
+
+ /**
+ * A source representing the core library.
+ */
+ Source _coreLibrarySource;
+
+ /**
+ * The partition that contains analysis results that are not shared with other contexts.
+ */
+ CachePartition _privatePartition;
+
+ /**
+ * A table mapping the sources known to the context to the information known about the source.
+ */
+ AnalysisCache _cache;
+
+ /**
+ * An array containing sources for which data should not be flushed.
+ */
+ List<Source> _priorityOrder = Source.EMPTY_ARRAY;
+
+ /**
+ * An array containing sources whose AST structure is needed in order to resolve the next library
+ * to be resolved.
+ */
+ HashSet<Source> _neededForResolution = null;
+
+ /**
+ * A table mapping sources to the change notices that are waiting to be returned related to that
+ * source.
+ */
+ HashMap<Source, ChangeNoticeImpl> _pendingNotices = new HashMap<Source, ChangeNoticeImpl>();
+
+ /**
+ * A set containing information about the tasks that have been performed since the last change
+ * notification. Used to detect infinite loops in [performAnalysisTask].
+ */
+ HashSet<String> _recentTasks = new HashSet<String>();
+
+ /**
+ * The object used to synchronize access to all of the caches. The rules related to the use of
+ * this lock object are
+ * * no analysis work is done while holding the lock, and
+ * * no analysis results can be recorded unless we have obtained the lock and validated that the
+ * results are for the same version (modification time) of the source as our current cache
+ * content.
+ */
+ static Object _cacheLock = new Object();
+
+ /**
+ * The object used to record the results of performing an analysis task.
+ */
+ AnalysisContextImpl_AnalysisTaskResultRecorder _resultRecorder;
+
+ /**
+ * Cached information used in incremental analysis or `null` if none. Synchronize against
+ * [cacheLock] before accessing this field.
+ */
+ IncrementalAnalysisCache _incrementalAnalysisCache;
+
+ /**
+ * The object used to manage the list of sources that need to be analyzed.
+ */
+ WorkManager _workManager = new WorkManager();
+
+ /**
+ * The set of [AngularApplication] in this context.
+ */
+ Set<AngularApplication> _angularApplications = new Set();
+
+ /**
+ * The listeners that are to be notified when various analysis results are produced in this
+ * context.
+ */
+ List<AnalysisListener> _listeners = new List<AnalysisListener>();
+
+ /**
+ * Initialize a newly created analysis context.
+ */
+ AnalysisContextImpl() : super() {
+ _resultRecorder = new AnalysisContextImpl_AnalysisTaskResultRecorder(this);
+ _privatePartition = new UniversalCachePartition(AnalysisOptionsImpl.DEFAULT_CACHE_SIZE, new AnalysisContextImpl_ContextRetentionPolicy(this));
+ _cache = createCacheFromSourceFactory(null);
+ }
+
+ @override
+ void addListener(AnalysisListener listener) {
+ if (!_listeners.contains(listener)) {
+ _listeners.add(listener);
+ }
+ }
+
+ @override
+ void addSourceInfo(Source source, SourceEntry info) {
+ // This implementation assumes that the access to the cache does not need to be synchronized
+ // because no other object can have access to this context while this method is being invoked.
+ _cache.put(source, info);
+ }
+
+ @override
+ void applyAnalysisDelta(AnalysisDelta delta) {
+ ChangeSet changeSet = new ChangeSet();
+ for (MapEntry<Source, AnalysisLevel> entry in getMapEntrySet(delta.analysisLevels)) {
+ Source source = entry.getKey();
+ if (entry.getValue() == AnalysisLevel.NONE) {
+ changeSet.removedSource(source);
+ } else {
+ changeSet.addedSource(source);
+ }
+ }
+ applyChanges(changeSet);
+ }
+
+ @override
+ void applyChanges(ChangeSet changeSet) {
+ if (changeSet.isEmpty) {
+ return;
+ }
+ _recentTasks.clear();
+ //
+ // First, compute the list of sources that have been removed.
+ //
+ List<Source> removedSources = new List<Source>.from(changeSet.removedSources);
+ for (SourceContainer container in changeSet.removedContainers) {
+ _addSourcesInContainer(removedSources, container);
+ }
+ //
+ // Then determine which cached results are no longer valid.
+ //
+ bool addedDartSource = false;
+ for (Source source in changeSet.addedSources) {
+ if (_sourceAvailable(source)) {
+ addedDartSource = true;
+ }
+ }
+ for (Source source in changeSet.changedSources) {
+ if (_contentCache.getContents(source) != null) {
+ // This source is overridden in the content cache, so the change will have no effect.
+ // Just ignore it to avoid wasting time doing re-analysis.
+ continue;
+ }
+ _sourceChanged(source);
+ }
+ for (MapEntry<Source, String> entry in getMapEntrySet(changeSet.changedContents)) {
+ setContents(entry.getKey(), entry.getValue());
+ }
+ for (MapEntry<Source, ChangeSet_ContentChange> entry in getMapEntrySet(changeSet.changedRanges)) {
+ ChangeSet_ContentChange change = entry.getValue();
+ setChangedContents(entry.getKey(), change.contents, change.offset, change.oldLength, change.newLength);
+ }
+ for (Source source in changeSet.deletedSources) {
+ _sourceDeleted(source);
+ }
+ for (Source source in removedSources) {
+ _sourceRemoved(source);
+ }
+ if (addedDartSource) {
+ // TODO(brianwilkerson) This is hugely inefficient, but we need to re-analyze any libraries
+ // that might have been referencing the not-yet-existing source that was just added. Longer
+ // term we need to keep track of which libraries are referencing non-existing sources and
+ // only re-analyze those libraries.
+ // logInformation("Added Dart sources, invalidating all resolution information");
+ List<Source> sourcesToInvalidate = new List<Source>();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ Source source = iterator.key;
+ SourceEntry sourceEntry = iterator.value;
+ if (!source.isInSystemLibrary && (sourceEntry is DartEntry || sourceEntry is HtmlEntry)) {
+ sourcesToInvalidate.add(source);
+ }
+ }
+ int count = sourcesToInvalidate.length;
+ for (int i = 0; i < count; i++) {
+ Source source = sourcesToInvalidate[i];
+ SourceEntry entry = _getReadableSourceEntry(source);
+ if (entry is DartEntry) {
+ DartEntry dartEntry = entry;
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.invalidateAllResolutionInformation(false);
+ _cache.put(source, dartCopy);
+ _workManager.add(source, _computePriority(dartCopy));
+ } else if (entry is HtmlEntry) {
+ HtmlEntry htmlEntry = entry;
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.invalidateAllResolutionInformation(false);
+ _cache.put(source, htmlCopy);
+ _workManager.add(source, SourcePriority.HTML);
+ }
+ }
+ }
+ }
+
+ @override
+ String computeDocumentationComment(Element element) {
+ if (element == null) {
+ return null;
+ }
+ Source source = element.source;
+ if (source == null) {
+ return null;
+ }
+ CompilationUnit unit = parseCompilationUnit(source);
+ if (unit == null) {
+ return null;
+ }
+ NodeLocator locator = new NodeLocator.con1(element.nameOffset);
+ AstNode nameNode = locator.searchWithin(unit);
+ while (nameNode != null) {
+ if (nameNode is AnnotatedNode) {
+ Comment comment = (nameNode as AnnotatedNode).documentationComment;
+ if (comment == null) {
+ return null;
+ }
+ JavaStringBuilder builder = new JavaStringBuilder();
+ List<Token> tokens = comment.tokens;
+ for (int i = 0; i < tokens.length; i++) {
+ if (i > 0) {
+ builder.append("\n");
+ }
+ builder.append(tokens[i].lexeme);
+ }
+ return builder.toString();
+ }
+ nameNode = nameNode.parent;
+ }
+ return null;
+ }
+
+ @override
+ List<AnalysisError> computeErrors(Source source) {
+ bool enableHints = _options.hint;
+ SourceEntry sourceEntry = _getReadableSourceEntry(source);
+ if (sourceEntry is DartEntry) {
+ List<AnalysisError> errors = new List<AnalysisError>();
+ try {
+ DartEntry dartEntry = sourceEntry;
+ ListUtilities.addAll(errors, _getDartScanData(source, dartEntry, DartEntry.SCAN_ERRORS));
+ dartEntry = _getReadableDartEntry(source);
+ ListUtilities.addAll(errors, _getDartParseData(source, dartEntry, DartEntry.PARSE_ERRORS));
+ dartEntry = _getReadableDartEntry(source);
+ if (dartEntry.getValue(DartEntry.SOURCE_KIND) == SourceKind.LIBRARY) {
+ ListUtilities.addAll(errors, _getDartResolutionData(source, source, dartEntry, DartEntry.RESOLUTION_ERRORS));
+ dartEntry = _getReadableDartEntry(source);
+ ListUtilities.addAll(errors, _getDartVerificationData(source, source, dartEntry, DartEntry.VERIFICATION_ERRORS));
+ if (enableHints) {
+ dartEntry = _getReadableDartEntry(source);
+ ListUtilities.addAll(errors, _getDartHintData(source, source, dartEntry, DartEntry.HINTS));
+ }
+ } else {
+ List<Source> libraries = getLibrariesContaining(source);
+ for (Source librarySource in libraries) {
+ ListUtilities.addAll(errors, _getDartResolutionData(source, librarySource, dartEntry, DartEntry.RESOLUTION_ERRORS));
+ dartEntry = _getReadableDartEntry(source);
+ ListUtilities.addAll(errors, _getDartVerificationData(source, librarySource, dartEntry, DartEntry.VERIFICATION_ERRORS));
+ if (enableHints) {
+ dartEntry = _getReadableDartEntry(source);
+ ListUtilities.addAll(errors, _getDartHintData(source, librarySource, dartEntry, DartEntry.HINTS));
+ }
+ }
+ }
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not compute errors", exception);
+ }
+ if (errors.isEmpty) {
+ return AnalysisError.NO_ERRORS;
+ }
+ return new List.from(errors);
+ } else if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ try {
+ return _getHtmlResolutionData2(source, htmlEntry, HtmlEntry.RESOLUTION_ERRORS);
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not compute errors", exception);
+ }
+ }
+ return AnalysisError.NO_ERRORS;
+ }
+
+ @override
+ List<Source> computeExportedLibraries(Source source) => _getDartParseData2(source, DartEntry.EXPORTED_LIBRARIES, Source.EMPTY_ARRAY);
+
+ @override
+ HtmlElement computeHtmlElement(Source source) => _getHtmlResolutionData(source, HtmlEntry.ELEMENT, null);
+
+ @override
+ List<Source> computeImportedLibraries(Source source) => _getDartParseData2(source, DartEntry.IMPORTED_LIBRARIES, Source.EMPTY_ARRAY);
+
+ @override
+ SourceKind computeKindOf(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntry(source);
+ if (sourceEntry == null) {
+ return SourceKind.UNKNOWN;
+ } else if (sourceEntry is DartEntry) {
+ try {
+ return _getDartParseData(source, sourceEntry, DartEntry.SOURCE_KIND);
+ } on AnalysisException catch (exception) {
+ return SourceKind.UNKNOWN;
+ }
+ }
+ return sourceEntry.kind;
+ }
+
+ @override
+ LibraryElement computeLibraryElement(Source source) => _getDartResolutionData2(source, source, DartEntry.ELEMENT, null);
+
+ @override
+ LineInfo computeLineInfo(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntry(source);
+ try {
+ if (sourceEntry is HtmlEntry) {
+ return _getHtmlParseData(source, SourceEntry.LINE_INFO, null);
+ } else if (sourceEntry is DartEntry) {
+ return _getDartScanData2(source, SourceEntry.LINE_INFO, null);
+ }
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not compute ${SourceEntry.LINE_INFO.toString()}", exception);
+ }
+ return null;
+ }
+
+ @override
+ ResolvableCompilationUnit computeResolvableCompilationUnit(Source source) {
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ throw new AnalysisException("computeResolvableCompilationUnit for non-Dart: ${source.fullName}");
+ }
+ dartEntry = _cacheDartParseData(source, dartEntry, DartEntry.PARSED_UNIT);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ CompilationUnit unit = dartCopy.resolvableCompilationUnit;
+ if (unit == null) {
+ throw new AnalysisException("Internal error: computeResolvableCompilationUnit could not parse ${source.fullName}", new CaughtException(dartEntry.exception, null));
+ }
+ _cache.put(source, dartCopy);
+ return new ResolvableCompilationUnit.con1(dartCopy.modificationTime, unit);
+ }
+
+ @override
+ void dispose() {
+ _disposed = true;
+ }
+
+ @override
+ bool exists(Source source) {
+ if (source == null) {
+ return false;
+ }
+ if (_contentCache.getContents(source) != null) {
+ return true;
+ }
+ return source.exists();
+ }
+
+ @override
+ AnalysisContext extractContext(SourceContainer container) => extractContextInto(container, AnalysisEngine.instance.createAnalysisContext() as InternalAnalysisContext);
+
+ @override
+ InternalAnalysisContext extractContextInto(SourceContainer container, InternalAnalysisContext newContext) {
+ List<Source> sourcesToRemove = new List<Source>();
+ // Move sources in the specified directory to the new context
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ Source source = iterator.key;
+ SourceEntry sourceEntry = iterator.value;
+ if (container.contains(source)) {
+ sourcesToRemove.add(source);
+ newContext.addSourceInfo(source, sourceEntry.writableCopy);
+ }
+ }
+ return newContext;
+ }
+
+ @override
+ AnalysisOptions get analysisOptions => _options;
+
+ @override
+ AngularApplication getAngularApplicationWithHtml(Source htmlSource) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(htmlSource);
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ AngularApplication application = htmlEntry.getValue(HtmlEntry.ANGULAR_APPLICATION);
+ if (application != null) {
+ return application;
+ }
+ return htmlEntry.getValue(HtmlEntry.ANGULAR_ENTRY);
+ }
+ return null;
+ }
+
+ @override
+ CompilationUnitElement getCompilationUnitElement(Source unitSource, Source librarySource) {
+ LibraryElement libraryElement = getLibraryElement(librarySource);
+ if (libraryElement != null) {
+ // try defining unit
+ CompilationUnitElement definingUnit = libraryElement.definingCompilationUnit;
+ if (definingUnit.source == unitSource) {
+ return definingUnit;
+ }
+ // try parts
+ for (CompilationUnitElement partUnit in libraryElement.parts) {
+ if (partUnit.source == unitSource) {
+ return partUnit;
+ }
+ }
+ }
+ return null;
+ }
+
+ @override
+ TimestampedData<String> getContents(Source source) {
+ String contents = _contentCache.getContents(source);
+ if (contents != null) {
+ return new TimestampedData<String>(_contentCache.getModificationStamp(source), contents);
+ }
+ return source.contents;
+ }
+
+ @override
+ DeclaredVariables get declaredVariables => _declaredVariables;
+
+ @override
+ Element getElement(ElementLocation location) {
+ // TODO(brianwilkerson) This should not be a "get" method.
+ try {
+ List<String> components = location.components;
+ Source source = _computeSourceFromEncoding(components[0]);
+ String sourceName = source.shortName;
+ if (AnalysisEngine.isDartFileName(sourceName)) {
+ ElementImpl element = computeLibraryElement(source) as ElementImpl;
+ for (int i = 1; i < components.length; i++) {
+ if (element == null) {
+ return null;
+ }
+ element = element.getChild(components[i]);
+ }
+ return element;
+ }
+ if (AnalysisEngine.isHtmlFileName(sourceName)) {
+ return computeHtmlElement(source);
+ }
+ } on AnalysisException catch (exception) {
+ }
+ return null;
+ }
+
+ @override
+ AnalysisErrorInfo getErrors(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(source);
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ return new AnalysisErrorInfoImpl(dartEntry.allErrors, dartEntry.getValue(SourceEntry.LINE_INFO));
+ } else if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ return new AnalysisErrorInfoImpl(htmlEntry.allErrors, htmlEntry.getValue(SourceEntry.LINE_INFO));
+ }
+ return new AnalysisErrorInfoImpl(AnalysisError.NO_ERRORS, null);
+ }
+
+ @override
+ HtmlElement getHtmlElement(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(source);
+ if (sourceEntry is HtmlEntry) {
+ return sourceEntry.getValue(HtmlEntry.ELEMENT);
+ }
+ return null;
+ }
+
+ @override
+ List<Source> getHtmlFilesReferencing(Source source) {
+ SourceKind sourceKind = getKindOf(source);
+ if (sourceKind == null) {
+ return Source.EMPTY_ARRAY;
+ }
+ List<Source> htmlSources = new List<Source>();
+ while (true) {
+ if (sourceKind == SourceKind.LIBRARY) {
+ } else if (sourceKind == SourceKind.PART) {
+ List<Source> librarySources = getLibrariesContaining(source);
+ MapIterator<Source, SourceEntry> partIterator = _cache.iterator();
+ while (partIterator.moveNext()) {
+ SourceEntry sourceEntry = partIterator.value;
+ if (sourceEntry.kind == SourceKind.HTML) {
+ List<Source> referencedLibraries = (sourceEntry as HtmlEntry).getValue(HtmlEntry.REFERENCED_LIBRARIES);
+ if (_containsAny(referencedLibraries, librarySources)) {
+ htmlSources.add(partIterator.key);
+ }
+ }
+ }
+ }
+ break;
+ }
+ if (htmlSources.isEmpty) {
+ return Source.EMPTY_ARRAY;
+ }
+ return new List.from(htmlSources);
+ }
+
+ @override
+ List<Source> get htmlSources => _getSources(SourceKind.HTML);
+
+ @override
+ SourceKind getKindOf(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(source);
+ if (sourceEntry == null) {
+ return SourceKind.UNKNOWN;
+ }
+ return sourceEntry.kind;
+ }
+
+ @override
+ List<Source> get launchableClientLibrarySources {
+ // TODO(brianwilkerson) This needs to filter out libraries that do not reference dart:html,
+ // either directly or indirectly.
+ List<Source> sources = new List<Source>();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ Source source = iterator.key;
+ SourceEntry sourceEntry = iterator.value;
+ if (sourceEntry.kind == SourceKind.LIBRARY && !source.isInSystemLibrary) {
+ // DartEntry dartEntry = (DartEntry) sourceEntry;
+ // if (dartEntry.getValue(DartEntry.IS_LAUNCHABLE) && dartEntry.getValue(DartEntry.IS_CLIENT)) {
+ sources.add(source);
+ }
+ }
+ return new List.from(sources);
+ }
+
+ @override
+ List<Source> get launchableServerLibrarySources {
+ // TODO(brianwilkerson) This needs to filter out libraries that reference dart:html, either
+ // directly or indirectly.
+ List<Source> sources = new List<Source>();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ Source source = iterator.key;
+ SourceEntry sourceEntry = iterator.value;
+ if (sourceEntry.kind == SourceKind.LIBRARY && !source.isInSystemLibrary) {
+ // DartEntry dartEntry = (DartEntry) sourceEntry;
+ // if (dartEntry.getValue(DartEntry.IS_LAUNCHABLE) && !dartEntry.getValue(DartEntry.IS_CLIENT)) {
+ sources.add(source);
+ }
+ }
+ return new List.from(sources);
+ }
+
+ @override
+ List<Source> getLibrariesContaining(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(source);
+ if (sourceEntry is DartEntry) {
+ return sourceEntry.getValue(DartEntry.CONTAINING_LIBRARIES);
+ }
+ return Source.EMPTY_ARRAY;
+ }
+
+ @override
+ List<Source> getLibrariesDependingOn(Source librarySource) {
+ List<Source> dependentLibraries = new List<Source>();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ SourceEntry sourceEntry = iterator.value;
+ if (sourceEntry.kind == SourceKind.LIBRARY) {
+ if (_contains((sourceEntry as DartEntry).getValue(DartEntry.EXPORTED_LIBRARIES), librarySource)) {
+ dependentLibraries.add(iterator.key);
+ }
+ if (_contains((sourceEntry as DartEntry).getValue(DartEntry.IMPORTED_LIBRARIES), librarySource)) {
+ dependentLibraries.add(iterator.key);
+ }
+ }
+ }
+ if (dependentLibraries.isEmpty) {
+ return Source.EMPTY_ARRAY;
+ }
+ return new List.from(dependentLibraries);
+ }
+
+ @override
+ List<Source> getLibrariesReferencedFromHtml(Source htmlSource) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(htmlSource);
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ return htmlEntry.getValue(HtmlEntry.REFERENCED_LIBRARIES);
+ }
+ return Source.EMPTY_ARRAY;
+ }
+
+ @override
+ LibraryElement getLibraryElement(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(source);
+ if (sourceEntry is DartEntry) {
+ return sourceEntry.getValue(DartEntry.ELEMENT);
+ }
+ return null;
+ }
+
+ @override
+ List<Source> get librarySources => _getSources(SourceKind.LIBRARY);
+
+ @override
+ LineInfo getLineInfo(Source source) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(source);
+ if (sourceEntry != null) {
+ return sourceEntry.getValue(SourceEntry.LINE_INFO);
+ }
+ return null;
+ }
+
+ @override
+ int getModificationStamp(Source source) {
+ int stamp = _contentCache.getModificationStamp(source);
+ if (stamp != null) {
+ return stamp;
+ }
+ return source.modificationStamp;
+ }
+
+ @override
+ List<Source> get prioritySources => _priorityOrder;
+
+ @override
+ Namespace getPublicNamespace(LibraryElement library) {
+ // TODO(brianwilkerson) Rename this to not start with 'get'. Note that this is not part of the
+ // API of the interface.
+ Source source = library.definingCompilationUnit.source;
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ return null;
+ }
+ Namespace namespace = null;
+ if (identical(dartEntry.getValue(DartEntry.ELEMENT), library)) {
+ namespace = dartEntry.getValue(DartEntry.PUBLIC_NAMESPACE);
+ }
+ if (namespace == null) {
+ NamespaceBuilder builder = new NamespaceBuilder();
+ namespace = builder.createPublicNamespaceForLibrary(library);
+ dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ AnalysisEngine.instance.logger.logError2("Could not compute the public namespace for ${library.source.fullName}", new CaughtException(new AnalysisException("A Dart file became a non-Dart file: ${source.fullName}"), null));
+ return null;
+ }
+ if (identical(dartEntry.getValue(DartEntry.ELEMENT), library)) {
+ DartEntryImpl dartCopy = _getReadableDartEntry(source).writableCopy;
+ dartCopy.setValue(DartEntry.PUBLIC_NAMESPACE, namespace);
+ _cache.put(source, dartCopy);
+ }
+ }
+ return namespace;
+ }
+
+ @override
+ List<Source> get refactoringUnsafeSources {
+ List<Source> sources = new List<Source>();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ SourceEntry sourceEntry = iterator.value;
+ if (sourceEntry is DartEntry) {
+ if (!sourceEntry.isRefactoringSafe) {
+ sources.add(iterator.key);
+ }
+ }
+ }
+ return new List.from(sources);
+ }
+
+ @override
+ CompilationUnit getResolvedCompilationUnit(Source unitSource, LibraryElement library) {
+ if (library == null) {
+ return null;
+ }
+ return getResolvedCompilationUnit2(unitSource, library.source);
+ }
+
+ @override
+ CompilationUnit getResolvedCompilationUnit2(Source unitSource, Source librarySource) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(unitSource);
+ if (sourceEntry is DartEntry) {
+ return sourceEntry.getValueInLibrary(DartEntry.RESOLVED_UNIT, librarySource);
+ }
+ return null;
+ }
+
+ @override
+ ht.HtmlUnit getResolvedHtmlUnit(Source htmlSource) {
+ SourceEntry sourceEntry = _getReadableSourceEntryOrNull(htmlSource);
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ return htmlEntry.getValue(HtmlEntry.RESOLVED_UNIT);
+ }
+ return null;
+ }
+
+ @override
+ SourceFactory get sourceFactory => _sourceFactory;
+
+ /**
+ * Return a list of the sources that would be processed by [performAnalysisTask]. This
+ * method duplicates, and must therefore be kept in sync with, [getNextAnalysisTask].
+ * This method is intended to be used for testing purposes only.
+ *
+ * @return a list of the sources that would be processed by [performAnalysisTask]
+ */
+ List<Source> get sourcesNeedingProcessing {
+ HashSet<Source> sources = new HashSet<Source>();
+ bool hintsEnabled = _options.hint;
+ //
+ // Look for priority sources that need to be analyzed.
+ //
+ for (Source source in _priorityOrder) {
+ _getSourcesNeedingProcessing(source, _cache.get(source), true, hintsEnabled, sources);
+ }
+ //
+ // Look for non-priority sources that need to be analyzed.
+ //
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ _getSourcesNeedingProcessing(iterator.key, iterator.value, false, hintsEnabled, sources);
+ }
+ return new List<Source>.from(sources);
+ }
+
+ @override
+ AnalysisContextStatistics get statistics {
+ bool hintsEnabled = _options.hint;
+ AnalysisContextStatisticsImpl statistics = new AnalysisContextStatisticsImpl();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ SourceEntry sourceEntry = iterator.value;
+ if (sourceEntry is DartEntry) {
+ Source source = iterator.key;
+ DartEntry dartEntry = sourceEntry;
+ SourceKind kind = dartEntry.getValue(DartEntry.SOURCE_KIND);
+ // get library independent values
+ statistics.putCacheItem(dartEntry, SourceEntry.LINE_INFO);
+ statistics.putCacheItem(dartEntry, DartEntry.PARSE_ERRORS);
+ statistics.putCacheItem(dartEntry, DartEntry.PARSED_UNIT);
+ statistics.putCacheItem(dartEntry, DartEntry.SOURCE_KIND);
+ if (kind == SourceKind.LIBRARY) {
+ statistics.putCacheItem(dartEntry, DartEntry.ELEMENT);
+ statistics.putCacheItem(dartEntry, DartEntry.EXPORTED_LIBRARIES);
+ statistics.putCacheItem(dartEntry, DartEntry.IMPORTED_LIBRARIES);
+ statistics.putCacheItem(dartEntry, DartEntry.INCLUDED_PARTS);
+ statistics.putCacheItem(dartEntry, DartEntry.IS_CLIENT);
+ statistics.putCacheItem(dartEntry, DartEntry.IS_LAUNCHABLE);
+ }
+ // get library-specific values
+ List<Source> librarySources = getLibrariesContaining(source);
+ for (Source librarySource in librarySources) {
+ statistics.putCacheItemInLibrary(dartEntry, librarySource, DartEntry.RESOLUTION_ERRORS);
+ statistics.putCacheItemInLibrary(dartEntry, librarySource, DartEntry.RESOLVED_UNIT);
+ if (_generateSdkErrors || !source.isInSystemLibrary) {
+ statistics.putCacheItemInLibrary(dartEntry, librarySource, DartEntry.VERIFICATION_ERRORS);
+ if (hintsEnabled) {
+ statistics.putCacheItemInLibrary(dartEntry, librarySource, DartEntry.HINTS);
+ }
+ }
+ }
+ } else if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ statistics.putCacheItem(htmlEntry, SourceEntry.LINE_INFO);
+ statistics.putCacheItem(htmlEntry, HtmlEntry.PARSE_ERRORS);
+ statistics.putCacheItem(htmlEntry, HtmlEntry.PARSED_UNIT);
+ statistics.putCacheItem(htmlEntry, HtmlEntry.RESOLUTION_ERRORS);
+ statistics.putCacheItem(htmlEntry, HtmlEntry.RESOLVED_UNIT);
+ }
+ }
+ statistics.partitionData = _cache.partitionData;
+ return statistics;
+ }
+
+ @override
+ TypeProvider get typeProvider {
+ Source coreSource = sourceFactory.forUri(DartSdk.DART_CORE);
+ if (coreSource == null) {
+ throw new AnalysisException("Could not create a source for dart:core");
+ }
+ LibraryElement coreElement = computeLibraryElement(coreSource);
+ if (coreElement == null) {
+ throw new AnalysisException("Could not create an element for dart:core");
+ }
+ return new TypeProviderImpl(coreElement);
+ }
+
+ @override
+ bool isClientLibrary(Source librarySource) {
+ SourceEntry sourceEntry = _getReadableSourceEntry(librarySource);
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ return dartEntry.getValue(DartEntry.IS_CLIENT) && dartEntry.getValue(DartEntry.IS_LAUNCHABLE);
+ }
+ return false;
+ }
+
+ @override
+ bool get isDisposed => _disposed;
+
+ @override
+ bool isServerLibrary(Source librarySource) {
+ SourceEntry sourceEntry = _getReadableSourceEntry(librarySource);
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ return !dartEntry.getValue(DartEntry.IS_CLIENT) && dartEntry.getValue(DartEntry.IS_LAUNCHABLE);
+ }
+ return false;
+ }
+
+ @override
+ void mergeContext(AnalysisContext context) {
+ if (context is InstrumentedAnalysisContextImpl) {
+ context = (context as InstrumentedAnalysisContextImpl).basis;
+ }
+ if (context is! AnalysisContextImpl) {
+ return;
+ }
+ // TODO(brianwilkerson) This does not lock against the other context's cacheLock.
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ Source newSource = iterator.key;
+ SourceEntry existingEntry = _getReadableSourceEntry(newSource);
+ if (existingEntry == null) {
+ // TODO(brianwilkerson) Decide whether we really need to copy the info.
+ _cache.put(newSource, iterator.value.writableCopy);
+ } else {
+ }
+ }
+ }
+
+ @override
+ CompilationUnit parseCompilationUnit(Source source) => _getDartParseData2(source, DartEntry.PARSED_UNIT, null);
+
+ @override
+ ht.HtmlUnit parseHtmlUnit(Source source) => _getHtmlParseData(source, HtmlEntry.PARSED_UNIT, null);
+
+ @override
+ AnalysisResult performAnalysisTask() {
+ if (_TRACE_PERFORM_TASK) {
+ print("----------------------------------------");
+ }
+ int getStart = JavaSystem.currentTimeMillis();
+ AnalysisTask task = nextAnalysisTask;
+ int getEnd = JavaSystem.currentTimeMillis();
+ if (task == null && _validateCacheConsistency()) {
+ task = nextAnalysisTask;
+ }
+ if (task == null) {
+ return new AnalysisResult(_getChangeNotices(true), getEnd - getStart, null, -1);
+ }
+ String taskDescription = task.toString();
+ // if (recentTasks.add(taskDescription)) {
+ // logInformation("Performing task: " + taskDescription);
+ // } else {
+ // if (TRACE_PERFORM_TASK) {
+ // System.out.print("* ");
+ // }
+ // logInformation("*** Performing repeated task: " + taskDescription);
+ // }
+ _notifyAboutToPerformTask(taskDescription);
+ if (_TRACE_PERFORM_TASK) {
+ print(taskDescription);
+ }
+ int performStart = JavaSystem.currentTimeMillis();
+ try {
+ task.perform(_resultRecorder);
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not perform analysis task: ${taskDescription}", exception);
+ } on AnalysisException catch (exception) {
+ if (exception.cause is! JavaIOException) {
+ AnalysisEngine.instance.logger.logError2("Internal error while performing the task: ${task}", exception);
+ }
+ }
+ int performEnd = JavaSystem.currentTimeMillis();
+ List<ChangeNotice> notices = _getChangeNotices(false);
+ int noticeCount = notices.length;
+ for (int i = 0; i < noticeCount; i++) {
+ ChangeNotice notice = notices[i];
+ Source source = notice.source;
+ // TODO(brianwilkerson) Figure out whether the compilation unit is always resolved, or whether
+ // we need to decide whether to invoke the "parsed" or "resolved" method. This might be better
+ // done when recording task results in order to reduce the chance of errors.
+ // if (notice.getCompilationUnit() != null) {
+ // notifyResolvedDart(source, notice.getCompilationUnit());
+ // } else if (notice.getHtmlUnit() != null) {
+ // notifyResolvedHtml(source, notice.getHtmlUnit());
+ // }
+ _notifyErrors(source, notice.errors, notice.lineInfo);
+ }
+ return new AnalysisResult(notices, getEnd - getStart, task.runtimeType.toString(), performEnd - performStart);
+ }
+
+ @override
+ void recordLibraryElements(Map<Source, LibraryElement> elementMap) {
+ Source htmlSource = _sourceFactory.forUri(DartSdk.DART_HTML);
+ for (MapEntry<Source, LibraryElement> entry in getMapEntrySet(elementMap)) {
+ Source librarySource = entry.getKey();
+ LibraryElement library = entry.getValue();
+ //
+ // Cache the element in the library's info.
+ //
+ DartEntry dartEntry = _getReadableDartEntry(librarySource);
+ if (dartEntry != null) {
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ _recordElementData(dartCopy, library, library.source, htmlSource);
+ dartCopy.setValue(DartEntry.SCAN_ERRORS, AnalysisError.NO_ERRORS);
+ dartCopy.setValue(DartEntry.PARSE_ERRORS, AnalysisError.NO_ERRORS);
+ dartCopy.setState(DartEntry.PARSED_UNIT, CacheState.FLUSHED);
+ dartCopy.setValueInLibrary(DartEntry.RESOLUTION_ERRORS, librarySource, AnalysisError.NO_ERRORS);
+ dartCopy.setStateInLibrary(DartEntry.RESOLVED_UNIT, librarySource, CacheState.FLUSHED);
+ dartCopy.setValueInLibrary(DartEntry.VERIFICATION_ERRORS, librarySource, AnalysisError.NO_ERRORS);
+ dartCopy.setValue(DartEntry.ANGULAR_ERRORS, AnalysisError.NO_ERRORS);
+ dartCopy.setValueInLibrary(DartEntry.HINTS, librarySource, AnalysisError.NO_ERRORS);
+ _cache.put(librarySource, dartCopy);
+ }
+ }
+ }
+
+ @override
+ void removeListener(AnalysisListener listener) {
+ _listeners.remove(listener);
+ }
+
+ @override
+ CompilationUnit resolveCompilationUnit(Source unitSource, LibraryElement library) {
+ if (library == null) {
+ return null;
+ }
+ return resolveCompilationUnit2(unitSource, library.source);
+ }
+
+ @override
+ CompilationUnit resolveCompilationUnit2(Source unitSource, Source librarySource) => _getDartResolutionData2(unitSource, librarySource, DartEntry.RESOLVED_UNIT, null);
+
+ @override
+ ht.HtmlUnit resolveHtmlUnit(Source htmlSource) {
+ computeHtmlElement(htmlSource);
+ return parseHtmlUnit(htmlSource);
+ }
+
+ @override
+ void set analysisOptions(AnalysisOptions options) {
+ bool needsRecompute = this._options.analyzeAngular != options.analyzeAngular || this._options.analyzeFunctionBodies != options.analyzeFunctionBodies || this._options.generateSdkErrors != options.generateSdkErrors || this._options.enableAsync != options.enableAsync || this._options.enableDeferredLoading != options.enableDeferredLoading || this._options.enableEnum != options.enableEnum || this._options.dart2jsHint != options.dart2jsHint || (this._options.hint && !options.hint) || this._options.preserveComments != options.preserveComments;
+ int cacheSize = options.cacheSize;
+ if (this._options.cacheSize != cacheSize) {
+ this._options.cacheSize = cacheSize;
+ //cache.setMaxCacheSize(cacheSize);
+ _privatePartition.maxCacheSize = cacheSize;
+ //
+ // Cap the size of the priority list to being less than the cache size. Failure to do so can
+ // result in an infinite loop in performAnalysisTask() because re-caching one AST structure
+ // can cause another priority source's AST structure to be flushed.
+ //
+ int maxPriorityOrderSize = cacheSize - _PRIORITY_ORDER_SIZE_DELTA;
+ if (_priorityOrder.length > maxPriorityOrderSize) {
+ List<Source> newPriorityOrder = new List<Source>(maxPriorityOrderSize);
+ JavaSystem.arraycopy(_priorityOrder, 0, newPriorityOrder, 0, maxPriorityOrderSize);
+ _priorityOrder = newPriorityOrder;
+ }
+ }
+ this._options.analyzeAngular = options.analyzeAngular;
+ this._options.analyzeFunctionBodies = options.analyzeFunctionBodies;
+ this._options.generateSdkErrors = options.generateSdkErrors;
+ this._options.enableAsync = options.enableAsync;
+ this._options.enableDeferredLoading = options.enableDeferredLoading;
+ this._options.enableEnum = options.enableEnum;
+ this._options.dart2jsHint = options.dart2jsHint;
+ this._options.hint = options.hint;
+ this._options.incremental = options.incremental;
+ this._options.preserveComments = options.preserveComments;
+ _generateSdkErrors = options.generateSdkErrors;
+ if (needsRecompute) {
+ _invalidateAllLocalResolutionInformation(false);
+ }
+ }
+
+ @override
+ void set analysisPriorityOrder(List<Source> sources) {
+ if (sources == null || sources.isEmpty) {
+ _priorityOrder = Source.EMPTY_ARRAY;
+ } else {
+ while (sources.remove(null)) {
+ }
+ if (sources.isEmpty) {
+ _priorityOrder = Source.EMPTY_ARRAY;
+ }
+ //
+ // Cap the size of the priority list to being less than the cache size. Failure to do so can
+ // result in an infinite loop in performAnalysisTask() because re-caching one AST structure
+ // can cause another priority source's AST structure to be flushed.
+ //
+ int count = Math.min(sources.length, _options.cacheSize - _PRIORITY_ORDER_SIZE_DELTA);
+ _priorityOrder = new List<Source>(count);
+ for (int i = 0; i < count; i++) {
+ _priorityOrder[i] = sources[i];
+ }
+ }
+ }
+
+ @override
+ void setChangedContents(Source source, String contents, int offset, int oldLength, int newLength) {
+ _recentTasks.clear();
+ String originalContents = _contentCache.setContents(source, contents);
+ if (contents != null) {
+ if (contents != originalContents) {
+ if (_options.incremental) {
+ _incrementalAnalysisCache = IncrementalAnalysisCache.update(_incrementalAnalysisCache, source, originalContents, contents, offset, oldLength, newLength, _getReadableSourceEntry(source));
+ }
+ _sourceChanged(source);
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry != null) {
+ SourceEntryImpl sourceCopy = sourceEntry.writableCopy;
+ sourceCopy.modificationTime = _contentCache.getModificationStamp(source);
+ sourceCopy.setValue(SourceEntry.CONTENT, contents);
+ _cache.put(source, sourceCopy);
+ }
+ }
+ } else if (originalContents != null) {
+ _incrementalAnalysisCache = IncrementalAnalysisCache.clear(_incrementalAnalysisCache, source);
+ _sourceChanged(source);
+ }
+ }
+
+ @override
+ void setContents(Source source, String contents) {
+ _recentTasks.clear();
+ String originalContents = _contentCache.setContents(source, contents);
+ if (contents != null) {
+ if (contents != originalContents) {
+ _incrementalAnalysisCache = IncrementalAnalysisCache.clear(_incrementalAnalysisCache, source);
+ _sourceChanged(source);
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry != null) {
+ SourceEntryImpl sourceCopy = sourceEntry.writableCopy;
+ sourceCopy.modificationTime = _contentCache.getModificationStamp(source);
+ sourceCopy.setValue(SourceEntry.CONTENT, contents);
+ _cache.put(source, sourceCopy);
+ }
+ }
+ } else if (originalContents != null) {
+ _incrementalAnalysisCache = IncrementalAnalysisCache.clear(_incrementalAnalysisCache, source);
+ _sourceChanged(source);
+ }
+ }
+
+ @override
+ void set sourceFactory(SourceFactory factory) {
+ if (identical(_sourceFactory, factory)) {
+ return;
+ } else if (factory.context != null) {
+ throw new IllegalStateException("Source factories cannot be shared between contexts");
+ }
+ if (_sourceFactory != null) {
+ _sourceFactory.context = null;
+ }
+ factory.context = this;
+ _sourceFactory = factory;
+ _coreLibrarySource = _sourceFactory.forUri(DartSdk.DART_CORE);
+ _cache = createCacheFromSourceFactory(factory);
+ _invalidateAllLocalResolutionInformation(true);
+ }
+
+ /**
+ * Create an analysis cache based on the given source factory.
+ *
+ * @param factory the source factory containing the information needed to create the cache
+ * @return the cache that was created
+ */
+ AnalysisCache createCacheFromSourceFactory(SourceFactory factory) {
+ if (factory == null) {
+ return new AnalysisCache(<CachePartition> [_privatePartition]);
+ }
+ DartSdk sdk = factory.dartSdk;
+ if (sdk == null) {
+ return new AnalysisCache(<CachePartition> [_privatePartition]);
+ }
+ return new AnalysisCache(<CachePartition> [
+ AnalysisEngine.instance.partitionManager.forSdk(sdk),
+ _privatePartition]);
+ }
+
+ /**
+ * Record the results produced by performing a [ResolveDartLibraryCycleTask]. If the results
+ * were computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ DartEntry recordResolveDartLibraryCycleTaskResults(ResolveDartLibraryCycleTask task) {
+ LibraryResolver2 resolver = task.libraryResolver;
+ CaughtException thrownException = task.exception;
+ DartEntry unitEntry = null;
+ Source unitSource = task.unitSource;
+ if (resolver != null) {
+ //
+ // The resolver should only be null if an exception was thrown before (or while) it was
+ // being created.
+ //
+ List<ResolvableLibrary> resolvedLibraries = resolver.resolvedLibraries;
+ if (resolvedLibraries == null) {
+ //
+ // The resolved libraries should only be null if an exception was thrown during resolution.
+ //
+ unitEntry = _getReadableDartEntry(unitSource);
+ if (unitEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${unitSource.fullName}");
+ }
+ DartEntryImpl dartCopy = unitEntry.writableCopy;
+ if (thrownException == null) {
+ dartCopy.recordResolutionError(new CaughtException(new AnalysisException("In recordResolveDartLibraryCycleTaskResults, resolvedLibraries was null and there was no thrown exception"), null));
+ } else {
+ dartCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(unitSource, dartCopy);
+ _cache.remove(unitSource);
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return dartCopy;
+ }
+ if (_allModificationTimesMatch(resolvedLibraries)) {
+ Source htmlSource = sourceFactory.forUri(DartSdk.DART_HTML);
+ RecordingErrorListener errorListener = resolver.errorListener;
+ for (ResolvableLibrary library in resolvedLibraries) {
+ Source librarySource = library.librarySource;
+ for (Source source in library.compilationUnitSources) {
+ CompilationUnit unit = library.getAST(source);
+ List<AnalysisError> errors = errorListener.getErrorsForSource(source);
+ LineInfo lineInfo = getLineInfo(source);
+ DartEntryImpl dartCopy = _cache.get(source).writableCopy as DartEntryImpl;
+ if (thrownException == null) {
+ dartCopy.setState(DartEntry.PARSED_UNIT, CacheState.FLUSHED);
+ dartCopy.setValueInLibrary(DartEntry.RESOLVED_UNIT, librarySource, unit);
+ dartCopy.setValueInLibrary(DartEntry.RESOLUTION_ERRORS, librarySource, errors);
+ if (source == librarySource) {
+ _recordElementData(dartCopy, library.libraryElement, librarySource, htmlSource);
+ }
+ _cache.storedAst(source);
+ } else {
+ dartCopy.recordResolutionErrorInLibrary(librarySource, thrownException);
+ _cache.remove(source);
+ }
+ _cache.put(source, dartCopy);
+ if (source != librarySource) {
+ _workManager.add(source, SourcePriority.PRIORITY_PART);
+ }
+ if (source == unitSource) {
+ unitEntry = dartCopy;
+ }
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.compilationUnit = unit;
+ notice.setErrors(dartCopy.allErrors, lineInfo);
+ }
+ }
+ } else {
+ PrintStringWriter writer = new PrintStringWriter();
+ writer.println("Library resolution results discarded for");
+ for (ResolvableLibrary library in resolvedLibraries) {
+ for (Source source in library.compilationUnitSources) {
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry != null) {
+ int resultTime = library.getModificationTime(source);
+ writer.println(" ${_debuggingString(source)}; sourceTime = ${getModificationStamp(source)}, resultTime = ${resultTime}, cacheTime = ${dartEntry.modificationTime}");
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the
+ // sources will be re-analyzed using the up-to-date sources.
+ //
+ dartCopy.recordResolutionNotInProcess();
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark
+ // the cache so that we won't attempt to re-analyze the sources until there's a
+ // good chance that we'll be able to do so without error.
+ //
+ dartCopy.recordResolutionError(thrownException);
+ _cache.remove(source);
+ }
+ _cache.put(source, dartCopy);
+ if (source == unitSource) {
+ unitEntry = dartCopy;
+ }
+ } else {
+ writer.println(" ${_debuggingString(source)}; sourceTime = ${getModificationStamp(source)}, no entry");
+ }
+ }
+ }
+ _logInformation(writer.toString());
+ }
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ if (unitEntry == null) {
+ unitEntry = _getReadableDartEntry(unitSource);
+ if (unitEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${unitSource.fullName}");
+ }
+ }
+ return unitEntry;
+ }
+
+ DartEntry recordResolveDartLibraryTaskResults(ResolveDartLibraryTask task) {
+ LibraryResolver resolver = task.libraryResolver;
+ CaughtException thrownException = task.exception;
+ DartEntry unitEntry = null;
+ Source unitSource = task.unitSource;
+ if (resolver != null) {
+ //
+ // The resolver should only be null if an exception was thrown before (or while) it was
+ // being created.
+ //
+ Set<Library> resolvedLibraries = resolver.resolvedLibraries;
+ if (resolvedLibraries == null) {
+ //
+ // The resolved libraries should only be null if an exception was thrown during resolution.
+ //
+ unitEntry = _getReadableDartEntry(unitSource);
+ if (unitEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${unitSource.fullName}");
+ }
+ DartEntryImpl dartCopy = unitEntry.writableCopy;
+ if (thrownException == null) {
+ dartCopy.recordResolutionError(new CaughtException(new AnalysisException("In recordResolveDartLibraryTaskResults, resolvedLibraries was null and there was no thrown exception"), null));
+ } else {
+ dartCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(unitSource, dartCopy);
+ _cache.remove(unitSource);
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return dartCopy;
+ }
+ if (_allModificationTimesMatch2(resolvedLibraries)) {
+ Source htmlSource = sourceFactory.forUri(DartSdk.DART_HTML);
+ RecordingErrorListener errorListener = resolver.errorListener;
+ for (Library library in resolvedLibraries) {
+ Source librarySource = library.librarySource;
+ for (Source source in library.compilationUnitSources) {
+ CompilationUnit unit = library.getAST(source);
+ List<AnalysisError> errors = errorListener.getErrorsForSource(source);
+ LineInfo lineInfo = getLineInfo(source);
+ DartEntry dartEntry = _cache.get(source) as DartEntry;
+ int sourceTime = getModificationStamp(source);
+ if (dartEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${source.fullName}");
+ }
+ }
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null) {
+ dartCopy.setValue(SourceEntry.LINE_INFO, lineInfo);
+ dartCopy.setState(DartEntry.PARSED_UNIT, CacheState.FLUSHED);
+ dartCopy.setValueInLibrary(DartEntry.RESOLVED_UNIT, librarySource, unit);
+ dartCopy.setValueInLibrary(DartEntry.RESOLUTION_ERRORS, librarySource, errors);
+ if (source == librarySource) {
+ _recordElementData(dartCopy, library.libraryElement, librarySource, htmlSource);
+ }
+ _cache.storedAst(source);
+ } else {
+ dartCopy.recordResolutionErrorInLibrary(librarySource, thrownException);
+ _cache.remove(source);
+ }
+ _cache.put(source, dartCopy);
+ if (source != librarySource) {
+ _workManager.add(source, SourcePriority.PRIORITY_PART);
+ }
+ if (source == unitSource) {
+ unitEntry = dartCopy;
+ }
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.compilationUnit = unit;
+ notice.setErrors(dartCopy.allErrors, lineInfo);
+ }
+ }
+ } else {
+ PrintStringWriter writer = new PrintStringWriter();
+ writer.println("Library resolution results discarded for");
+ for (Library library in resolvedLibraries) {
+ for (Source source in library.compilationUnitSources) {
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry != null) {
+ int resultTime = library.getModificationTime(source);
+ writer.println(" ${_debuggingString(source)}; sourceTime = ${getModificationStamp(source)}, resultTime = ${resultTime}, cacheTime = ${dartEntry.modificationTime}");
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the
+ // sources will be re-analyzed using the up-to-date sources.
+ //
+ dartCopy.recordResolutionNotInProcess();
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark
+ // the cache so that we won't attempt to re-analyze the sources until there's a
+ // good chance that we'll be able to do so without error.
+ //
+ dartCopy.recordResolutionError(thrownException);
+ _cache.remove(source);
+ }
+ _cache.put(source, dartCopy);
+ if (source == unitSource) {
+ unitEntry = dartCopy;
+ }
+ } else {
+ writer.println(" ${_debuggingString(source)}; sourceTime = ${getModificationStamp(source)}, no entry");
+ }
+ }
+ }
+ _logInformation(writer.toString());
+ }
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ if (unitEntry == null) {
+ unitEntry = _getReadableDartEntry(unitSource);
+ if (unitEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${unitSource.fullName}");
+ }
+ }
+ return unitEntry;
+ }
+
+ /**
+ * Record that we have accessed the AST structure associated with the given source. At the moment,
+ * there is no differentiation between the parsed and resolved forms of the AST.
+ *
+ * @param source the source whose AST structure was accessed
+ */
+ void _accessedAst(Source source) {
+ _cache.accessedAst(source);
+ }
+
+ /**
+ * Add all of the sources contained in the given source container to the given list of sources.
+ *
+ * Note: This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param sources the list to which sources are to be added
+ * @param container the source container containing the sources to be added to the list
+ */
+ void _addSourcesInContainer(List<Source> sources, SourceContainer container) {
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ Source source = iterator.key;
+ if (container.contains(source)) {
+ sources.add(source);
+ }
+ }
+ }
+
+ /**
+ * Return `true` if the modification times of the sources used by the given library resolver
+ * to resolve one or more libraries are consistent with the modification times in the cache.
+ *
+ * @param resolver the library resolver used to resolve one or more libraries
+ * @return `true` if we should record the results of the resolution
+ * @throws AnalysisException if any of the modification times could not be determined (this should
+ * not happen)
+ */
+ bool _allModificationTimesMatch(List<ResolvableLibrary> resolvedLibraries) {
+ bool allTimesMatch = true;
+ for (ResolvableLibrary library in resolvedLibraries) {
+ for (Source source in library.compilationUnitSources) {
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ // This shouldn't be possible because we should never have performed the task if the
+ // source didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-Dart file as a Dart file: ${source.fullName}");
+ }
+ int sourceTime = getModificationStamp(source);
+ int resultTime = library.getModificationTime(source);
+ if (sourceTime != resultTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ allTimesMatch = false;
+ }
+ }
+ }
+ return allTimesMatch;
+ }
+
+ /**
+ * Return `true` if the modification times of the sources used by the given library resolver
+ * to resolve one or more libraries are consistent with the modification times in the cache.
+ *
+ * @param resolver the library resolver used to resolve one or more libraries
+ * @return `true` if we should record the results of the resolution
+ * @throws AnalysisException if any of the modification times could not be determined (this should
+ * not happen)
+ */
+ bool _allModificationTimesMatch2(Set<Library> resolvedLibraries) {
+ bool allTimesMatch = true;
+ for (Library library in resolvedLibraries) {
+ for (Source source in library.compilationUnitSources) {
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ // This shouldn't be possible because we should never have performed the task if the
+ // source didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-Dart file as a Dart file: ${source.fullName}");
+ }
+ int sourceTime = getModificationStamp(source);
+ int resultTime = library.getModificationTime(source);
+ if (sourceTime != resultTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ allTimesMatch = false;
+ }
+ }
+ }
+ return allTimesMatch;
+ }
+
+ /**
+ * Given a source for a Dart file and the library that contains it, return a cache entry in which
+ * the state of the data represented by the given descriptor is either [CacheState#VALID] or
+ * [CacheState#ERROR]. This method assumes that the data can be produced by generating hints
+ * for the library if the data is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source representing the Dart file
+ * @param librarySource the source representing the library containing the Dart file
+ * @param dartEntry the cache entry associated with the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return a cache entry containing the required data
+ * @throws AnalysisException if data could not be returned because the source could not be parsed
+ */
+ DartEntry _cacheDartHintData(Source unitSource, Source librarySource, DartEntry dartEntry, DataDescriptor descriptor) {
+ //
+ // Check to see whether we already have the information being requested.
+ //
+ CacheState state = dartEntry.getStateInLibrary(descriptor, librarySource);
+ while (state != CacheState.ERROR && state != CacheState.VALID) {
+ //
+ // If not, compute the information. Unless the modification date of the source continues to
+ // change, this loop will eventually terminate.
+ //
+ DartEntry libraryEntry = _getReadableDartEntry(librarySource);
+ libraryEntry = _cacheDartResolutionData(librarySource, librarySource, libraryEntry, DartEntry.ELEMENT);
+ LibraryElement libraryElement = libraryEntry.getValue(DartEntry.ELEMENT);
+ CompilationUnitElement definingUnit = libraryElement.definingCompilationUnit;
+ List<CompilationUnitElement> parts = libraryElement.parts;
+ List<TimestampedData<CompilationUnit>> units = new List<TimestampedData>(parts.length + 1);
+ units[0] = _getResolvedUnit(definingUnit, librarySource);
+ if (units[0] == null) {
+ Source source = definingUnit.source;
+ units[0] = new TimestampedData<CompilationUnit>(getModificationStamp(source), resolveCompilationUnit(source, libraryElement));
+ }
+ for (int i = 0; i < parts.length; i++) {
+ units[i + 1] = _getResolvedUnit(parts[i], librarySource);
+ if (units[i + 1] == null) {
+ Source source = parts[i].source;
+ units[i + 1] = new TimestampedData<CompilationUnit>(getModificationStamp(source), resolveCompilationUnit(source, libraryElement));
+ }
+ }
+ dartEntry = new GenerateDartHintsTask(this, units, getLibraryElement(librarySource)).perform(_resultRecorder) as DartEntry;
+ state = dartEntry.getStateInLibrary(descriptor, librarySource);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Given a source for a Dart file, return a cache entry in which the state of the data represented
+ * by the given descriptor is either [CacheState#VALID] or [CacheState#ERROR]. This
+ * method assumes that the data can be produced by parsing the source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the Dart file
+ * @param dartEntry the cache entry associated with the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return a cache entry containing the required data
+ * @throws AnalysisException if data could not be returned because the source could not be parsed
+ */
+ DartEntry _cacheDartParseData(Source source, DartEntry dartEntry, DataDescriptor descriptor) {
+ if (identical(descriptor, DartEntry.PARSED_UNIT)) {
+ if (dartEntry.hasResolvableCompilationUnit) {
+ return dartEntry;
+ }
+ }
+ //
+ // Check to see whether we already have the information being requested.
+ //
+ CacheState state = dartEntry.getState(descriptor);
+ while (state != CacheState.ERROR && state != CacheState.VALID) {
+ //
+ // If not, compute the information. Unless the modification date of the source continues to
+ // change, this loop will eventually terminate.
+ //
+ dartEntry = _cacheDartScanData(source, dartEntry, DartEntry.TOKEN_STREAM);
+ dartEntry = new ParseDartTask(this, source, dartEntry.modificationTime, dartEntry.getValue(DartEntry.TOKEN_STREAM), dartEntry.getValue(SourceEntry.LINE_INFO)).perform(_resultRecorder) as DartEntry;
+ state = dartEntry.getState(descriptor);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Given a source for a Dart file and the library that contains it, return a cache entry in which
+ * the state of the data represented by the given descriptor is either [CacheState#VALID] or
+ * [CacheState#ERROR]. This method assumes that the data can be produced by resolving the
+ * source in the context of the library if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source representing the Dart file
+ * @param librarySource the source representing the library containing the Dart file
+ * @param dartEntry the cache entry associated with the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return a cache entry containing the required data
+ * @throws AnalysisException if data could not be returned because the source could not be parsed
+ */
+ DartEntry _cacheDartResolutionData(Source unitSource, Source librarySource, DartEntry dartEntry, DataDescriptor descriptor) {
+ //
+ // Check to see whether we already have the information being requested.
+ //
+ CacheState state = (identical(descriptor, DartEntry.ELEMENT)) ? dartEntry.getState(descriptor) : dartEntry.getStateInLibrary(descriptor, librarySource);
+ while (state != CacheState.ERROR && state != CacheState.VALID) {
+ //
+ // If not, compute the information. Unless the modification date of the source continues to
+ // change, this loop will eventually terminate.
+ //
+ // TODO(brianwilkerson) As an optimization, if we already have the element model for the
+ // library we can use ResolveDartUnitTask to produce the resolved AST structure much faster.
+ dartEntry = new ResolveDartLibraryTask(this, unitSource, librarySource).perform(_resultRecorder) as DartEntry;
+ state = (identical(descriptor, DartEntry.ELEMENT)) ? dartEntry.getState(descriptor) : dartEntry.getStateInLibrary(descriptor, librarySource);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Given a source for a Dart file, return a cache entry in which the state of the data represented
+ * by the given descriptor is either [CacheState#VALID] or [CacheState#ERROR]. This
+ * method assumes that the data can be produced by scanning the source if it is not already
+ * cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the Dart file
+ * @param dartEntry the cache entry associated with the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return a cache entry containing the required data
+ * @throws AnalysisException if data could not be returned because the source could not be scanned
+ */
+ DartEntry _cacheDartScanData(Source source, DartEntry dartEntry, DataDescriptor descriptor) {
+ //
+ // Check to see whether we already have the information being requested.
+ //
+ CacheState state = dartEntry.getState(descriptor);
+ while (state != CacheState.ERROR && state != CacheState.VALID) {
+ //
+ // If not, compute the information. Unless the modification date of the source continues to
+ // change, this loop will eventually terminate.
+ //
+ try {
+ if (dartEntry.getState(SourceEntry.CONTENT) != CacheState.VALID) {
+ dartEntry = new GetContentTask(this, source).perform(_resultRecorder) as DartEntry;
+ }
+ dartEntry = new ScanDartTask(this, source, dartEntry.modificationTime, dartEntry.getValue(SourceEntry.CONTENT)).perform(_resultRecorder) as DartEntry;
+ } on AnalysisException catch (exception) {
+ throw exception;
+ } catch (exception, stackTrace) {
+ throw new AnalysisException("Exception", new CaughtException(exception, stackTrace));
+ }
+ state = dartEntry.getState(descriptor);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Given a source for a Dart file and the library that contains it, return a cache entry in which
+ * the state of the data represented by the given descriptor is either [CacheState#VALID] or
+ * [CacheState#ERROR]. This method assumes that the data can be produced by verifying the
+ * source in the given library if the data is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source representing the Dart file
+ * @param librarySource the source representing the library containing the Dart file
+ * @param dartEntry the cache entry associated with the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return a cache entry containing the required data
+ * @throws AnalysisException if data could not be returned because the source could not be parsed
+ */
+ DartEntry _cacheDartVerificationData(Source unitSource, Source librarySource, DartEntry dartEntry, DataDescriptor descriptor) {
+ //
+ // Check to see whether we already have the information being requested.
+ //
+ CacheState state = dartEntry.getStateInLibrary(descriptor, librarySource);
+ while (state != CacheState.ERROR && state != CacheState.VALID) {
+ //
+ // If not, compute the information. Unless the modification date of the source continues to
+ // change, this loop will eventually terminate.
+ //
+ LibraryElement library = computeLibraryElement(librarySource);
+ CompilationUnit unit = resolveCompilationUnit(unitSource, library);
+ if (unit == null) {
+ throw new AnalysisException("Could not resolve compilation unit ${unitSource.fullName} in ${librarySource.fullName}");
+ }
+ dartEntry = new GenerateDartErrorsTask(this, unitSource, dartEntry.modificationTime, unit, library).perform(_resultRecorder) as DartEntry;
+ state = dartEntry.getStateInLibrary(descriptor, librarySource);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Given a source for an HTML file, return a cache entry in which all of the data represented by
+ * the state of the given descriptors is either [CacheState#VALID] or
+ * [CacheState#ERROR]. This method assumes that the data can be produced by parsing the
+ * source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the HTML file
+ * @param htmlEntry the cache entry associated with the HTML file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return a cache entry containing the required data
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ HtmlEntry _cacheHtmlParseData(Source source, HtmlEntry htmlEntry, DataDescriptor descriptor) {
+ if (identical(descriptor, HtmlEntry.PARSED_UNIT)) {
+ ht.HtmlUnit unit = htmlEntry.anyParsedUnit;
+ if (unit != null) {
+ return htmlEntry;
+ }
+ }
+ //
+ // Check to see whether we already have the information being requested.
+ //
+ CacheState state = htmlEntry.getState(descriptor);
+ while (state != CacheState.ERROR && state != CacheState.VALID) {
+ //
+ // If not, compute the information. Unless the modification date of the source continues to
+ // change, this loop will eventually terminate.
+ //
+ try {
+ if (htmlEntry.getState(SourceEntry.CONTENT) != CacheState.VALID) {
+ htmlEntry = new GetContentTask(this, source).perform(_resultRecorder) as HtmlEntry;
+ }
+ htmlEntry = new ParseHtmlTask(this, source, htmlEntry.modificationTime, htmlEntry.getValue(SourceEntry.CONTENT)).perform(_resultRecorder) as HtmlEntry;
+ } on AnalysisException catch (exception) {
+ throw exception;
+ } catch (exception, stackTrace) {
+ throw new AnalysisException("Exception", new CaughtException(exception, stackTrace));
+ }
+ state = htmlEntry.getState(descriptor);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Given a source for an HTML file, return a cache entry in which the state of the data
+ * represented by the given descriptor is either [CacheState#VALID] or
+ * [CacheState#ERROR]. This method assumes that the data can be produced by resolving the
+ * source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the HTML file
+ * @param dartEntry the cache entry associated with the HTML file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return a cache entry containing the required data
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ HtmlEntry _cacheHtmlResolutionData(Source source, HtmlEntry htmlEntry, DataDescriptor descriptor) {
+ //
+ // Check to see whether we already have the information being requested.
+ //
+ CacheState state = htmlEntry.getState(descriptor);
+ while (state != CacheState.ERROR && state != CacheState.VALID) {
+ //
+ // If not, compute the information. Unless the modification date of the source continues to
+ // change, this loop will eventually terminate.
+ //
+ htmlEntry = _cacheHtmlParseData(source, htmlEntry, HtmlEntry.PARSED_UNIT);
+ htmlEntry = new ResolveHtmlTask(this, source, htmlEntry.modificationTime, htmlEntry.getValue(HtmlEntry.PARSED_UNIT)).perform(_resultRecorder) as HtmlEntry;
+ state = htmlEntry.getState(descriptor);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Compute the transitive closure of all libraries that depend on the given library by adding such
+ * libraries to the given collection.
+ *
+ * @param library the library on which the other libraries depend
+ * @param librariesToInvalidate the libraries that depend on the given library
+ */
+ void _computeAllLibrariesDependingOn(Source library, HashSet<Source> librariesToInvalidate) {
+ if (librariesToInvalidate.add(library)) {
+ for (Source dependentLibrary in getLibrariesDependingOn(library)) {
+ _computeAllLibrariesDependingOn(dependentLibrary, librariesToInvalidate);
+ }
+ }
+ }
+
+ /**
+ * Compute the priority that should be used when the source associated with the given entry is
+ * added to the work manager.
+ *
+ * @param dartEntry the entry associated with the source
+ * @return the priority that was computed
+ */
+ SourcePriority _computePriority(DartEntry dartEntry) {
+ SourceKind kind = dartEntry.kind;
+ if (kind == SourceKind.LIBRARY) {
+ return SourcePriority.LIBRARY;
+ } else if (kind == SourceKind.PART) {
+ return SourcePriority.NORMAL_PART;
+ }
+ return SourcePriority.UNKNOWN;
+ }
+
+ /**
+ * Given the encoded form of a source, use the source factory to reconstitute the original source.
+ *
+ * @param encoding the encoded form of a source
+ * @return the source represented by the encoding
+ */
+ Source _computeSourceFromEncoding(String encoding) => _sourceFactory.fromEncoding(encoding);
+
+ /**
+ * Return `true` if the given array of sources contains the given source.
+ *
+ * @param sources the sources being searched
+ * @param targetSource the source being searched for
+ * @return `true` if the given source is in the array
+ */
+ bool _contains(List<Source> sources, Source targetSource) {
+ for (Source source in sources) {
+ if (source == targetSource) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Return `true` if the given array of sources contains any of the given target sources.
+ *
+ * @param sources the sources being searched
+ * @param targetSources the sources being searched for
+ * @return `true` if any of the given target sources are in the array
+ */
+ bool _containsAny(List<Source> sources, List<Source> targetSources) {
+ for (Source targetSource in targetSources) {
+ if (_contains(sources, targetSource)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Create a [GenerateDartErrorsTask] for the given source, marking the verification errors
+ * as being in-process. The compilation unit and the library can be the same if the compilation
+ * unit is the defining compilation unit of the library.
+ *
+ * @param unitSource the source for the compilation unit to be verified
+ * @param unitEntry the entry for the compilation unit
+ * @param librarySource the source for the library containing the compilation unit
+ * @param libraryEntry the entry for the library
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createGenerateDartErrorsTask(Source unitSource, DartEntry unitEntry, Source librarySource, DartEntry libraryEntry) {
+ if (unitEntry.getStateInLibrary(DartEntry.RESOLVED_UNIT, librarySource) != CacheState.VALID || libraryEntry.getState(DartEntry.ELEMENT) != CacheState.VALID) {
+ return _createResolveDartLibraryTask(librarySource, libraryEntry);
+ }
+ CompilationUnit unit = unitEntry.getValueInLibrary(DartEntry.RESOLVED_UNIT, librarySource);
+ if (unit == null) {
+ CaughtException exception = new CaughtException(new AnalysisException("Entry has VALID state for RESOLVED_UNIT but null value for ${unitSource.fullName} in ${librarySource.fullName}"), null);
+ AnalysisEngine.instance.logger.logInformation2(exception.toString(), exception);
+ DartEntryImpl dartCopy = unitEntry.writableCopy;
+ dartCopy.recordResolutionError(exception);
+ _cache.put(unitSource, dartCopy);
+ return new AnalysisContextImpl_TaskData(null, false);
+ }
+ LibraryElement libraryElement = libraryEntry.getValue(DartEntry.ELEMENT);
+ DartEntryImpl dartCopy = unitEntry.writableCopy;
+ dartCopy.setStateInLibrary(DartEntry.VERIFICATION_ERRORS, librarySource, CacheState.IN_PROCESS);
+ _cache.put(unitSource, dartCopy);
+ return new AnalysisContextImpl_TaskData(new GenerateDartErrorsTask(this, unitSource, dartCopy.modificationTime, unit, libraryElement), false);
+ }
+
+ /**
+ * Create a [GenerateDartHintsTask] for the given source, marking the hints as being
+ * in-process.
+ *
+ * @param source the source whose content is to be verified
+ * @param dartEntry the entry for the source
+ * @param librarySource the source for the library containing the source
+ * @param libraryEntry the entry for the library
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createGenerateDartHintsTask(Source source, DartEntry dartEntry, Source librarySource, DartEntry libraryEntry) {
+ if (libraryEntry.getState(DartEntry.ELEMENT) != CacheState.VALID) {
+ return _createResolveDartLibraryTask(librarySource, libraryEntry);
+ }
+ LibraryElement libraryElement = libraryEntry.getValue(DartEntry.ELEMENT);
+ CompilationUnitElement definingUnit = libraryElement.definingCompilationUnit;
+ List<CompilationUnitElement> parts = libraryElement.parts;
+ List<TimestampedData<CompilationUnit>> units = new List<TimestampedData>(parts.length + 1);
+ units[0] = _getResolvedUnit(definingUnit, librarySource);
+ if (units[0] == null) {
+ // TODO(brianwilkerson) We should return a ResolveDartUnitTask (unless there are multiple ASTs
+ // that need to be resolved.
+ return _createResolveDartLibraryTask(librarySource, libraryEntry);
+ }
+ for (int i = 0; i < parts.length; i++) {
+ units[i + 1] = _getResolvedUnit(parts[i], librarySource);
+ if (units[i + 1] == null) {
+ // TODO(brianwilkerson) We should return a ResolveDartUnitTask (unless there are multiple
+ // ASTs that need to be resolved.
+ return _createResolveDartLibraryTask(librarySource, libraryEntry);
+ }
+ }
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.setStateInLibrary(DartEntry.HINTS, librarySource, CacheState.IN_PROCESS);
+ _cache.put(source, dartCopy);
+ return new AnalysisContextImpl_TaskData(new GenerateDartHintsTask(this, units, libraryElement), false);
+ }
+
+ /**
+ * Create a [GetContentTask] for the given source, marking the content as being in-process.
+ *
+ * @param source the source whose content is to be accessed
+ * @param sourceEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createGetContentTask(Source source, SourceEntry sourceEntry) {
+ SourceEntryImpl sourceCopy = sourceEntry.writableCopy;
+ sourceCopy.setState(SourceEntry.CONTENT, CacheState.IN_PROCESS);
+ _cache.put(source, sourceCopy);
+ return new AnalysisContextImpl_TaskData(new GetContentTask(this, source), false);
+ }
+
+ /**
+ * Create a [ParseDartTask] for the given source, marking the parse errors as being
+ * in-process.
+ *
+ * @param source the source whose content is to be parsed
+ * @param dartEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createParseDartTask(Source source, DartEntry dartEntry) {
+ if (dartEntry.getState(DartEntry.TOKEN_STREAM) != CacheState.VALID || dartEntry.getState(SourceEntry.LINE_INFO) != CacheState.VALID) {
+ return _createScanDartTask(source, dartEntry);
+ }
+ Token tokenStream = dartEntry.getValue(DartEntry.TOKEN_STREAM);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.setState(DartEntry.TOKEN_STREAM, CacheState.FLUSHED);
+ dartCopy.setState(DartEntry.PARSE_ERRORS, CacheState.IN_PROCESS);
+ _cache.put(source, dartCopy);
+ return new AnalysisContextImpl_TaskData(new ParseDartTask(this, source, dartCopy.modificationTime, tokenStream, dartEntry.getValue(SourceEntry.LINE_INFO)), false);
+ }
+
+ /**
+ * Create a [ParseHtmlTask] for the given source, marking the parse errors as being
+ * in-process.
+ *
+ * @param source the source whose content is to be parsed
+ * @param htmlEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createParseHtmlTask(Source source, HtmlEntry htmlEntry) {
+ if (htmlEntry.getState(SourceEntry.CONTENT) != CacheState.VALID) {
+ return _createGetContentTask(source, htmlEntry);
+ }
+ String content = htmlEntry.getValue(SourceEntry.CONTENT);
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setState(SourceEntry.CONTENT, CacheState.FLUSHED);
+ htmlCopy.setState(HtmlEntry.PARSE_ERRORS, CacheState.IN_PROCESS);
+ _cache.put(source, htmlCopy);
+ return new AnalysisContextImpl_TaskData(new ParseHtmlTask(this, source, htmlCopy.modificationTime, content), false);
+ }
+
+ /**
+ * Create a [PolymerBuildHtmlTask] for the given source, marking the Polymer elements as
+ * being in-process.
+ *
+ * @param source the source whose content is to be processed
+ * @param htmlEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createPolymerBuildHtmlTask(Source source, HtmlEntry htmlEntry) {
+ if (htmlEntry.getState(HtmlEntry.RESOLVED_UNIT) != CacheState.VALID) {
+ return _createResolveHtmlTask(source, htmlEntry);
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setState(HtmlEntry.POLYMER_BUILD_ERRORS, CacheState.IN_PROCESS);
+ _cache.put(source, htmlCopy);
+ return new AnalysisContextImpl_TaskData(new PolymerBuildHtmlTask(this, source, htmlCopy.modificationTime, htmlEntry.getValue(SourceEntry.LINE_INFO), htmlCopy.getValue(HtmlEntry.RESOLVED_UNIT)), false);
+ }
+
+ /**
+ * Create a [PolymerResolveHtmlTask] for the given source, marking the Polymer errors as
+ * being in-process.
+ *
+ * @param source the source whose content is to be resolved
+ * @param htmlEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createPolymerResolveHtmlTask(Source source, HtmlEntry htmlEntry) {
+ if (htmlEntry.getState(HtmlEntry.RESOLVED_UNIT) != CacheState.VALID) {
+ return _createResolveHtmlTask(source, htmlEntry);
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setState(HtmlEntry.POLYMER_RESOLUTION_ERRORS, CacheState.IN_PROCESS);
+ _cache.put(source, htmlCopy);
+ return new AnalysisContextImpl_TaskData(new PolymerResolveHtmlTask(this, source, htmlCopy.modificationTime, htmlEntry.getValue(SourceEntry.LINE_INFO), htmlCopy.getValue(HtmlEntry.RESOLVED_UNIT)), false);
+ }
+
+ /**
+ * Create a [ResolveAngularComponentTemplateTask] for the given source, marking the angular
+ * errors as being in-process.
+ *
+ * @param source the source whose content is to be resolved
+ * @param htmlEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createResolveAngularComponentTemplateTask(Source source, HtmlEntry htmlEntry) {
+ if (htmlEntry.getState(HtmlEntry.RESOLVED_UNIT) != CacheState.VALID) {
+ return _createResolveHtmlTask(source, htmlEntry);
+ }
+ AngularApplication application = htmlEntry.getValue(HtmlEntry.ANGULAR_APPLICATION);
+ AngularComponentElement component = htmlEntry.getValue(HtmlEntry.ANGULAR_COMPONENT);
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setState(HtmlEntry.ANGULAR_ERRORS, CacheState.IN_PROCESS);
+ _cache.put(source, htmlCopy);
+ return new AnalysisContextImpl_TaskData(new ResolveAngularComponentTemplateTask(this, source, htmlCopy.modificationTime, htmlCopy.getValue(HtmlEntry.RESOLVED_UNIT), component, application), false);
+ }
+
+ /**
+ * Create a [ResolveAngularEntryHtmlTask] for the given source, marking the angular entry as
+ * being in-process.
+ *
+ * @param source the source whose content is to be resolved
+ * @param htmlEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createResolveAngularEntryHtmlTask(Source source, HtmlEntry htmlEntry) {
+ if (htmlEntry.getState(HtmlEntry.RESOLVED_UNIT) != CacheState.VALID) {
+ return _createResolveHtmlTask(source, htmlEntry);
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setState(HtmlEntry.ANGULAR_ENTRY, CacheState.IN_PROCESS);
+ _cache.put(source, htmlCopy);
+ return new AnalysisContextImpl_TaskData(new ResolveAngularEntryHtmlTask(this, source, htmlCopy.modificationTime, htmlCopy.getValue(HtmlEntry.RESOLVED_UNIT)), false);
+ }
+
+ /**
+ * Create a [ResolveDartLibraryTask] for the given source, marking ? as being in-process.
+ *
+ * @param source the source whose content is to be resolved
+ * @param dartEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createResolveDartLibraryTask(Source source, DartEntry dartEntry) {
+ try {
+ AnalysisContextImpl_CycleBuilder builder = new AnalysisContextImpl_CycleBuilder(this);
+ builder.computeCycleContaining(source);
+ AnalysisContextImpl_TaskData taskData = builder.taskData;
+ if (taskData != null) {
+ return taskData;
+ }
+ return new AnalysisContextImpl_TaskData(new ResolveDartLibraryCycleTask(this, source, source, builder.librariesInCycle), false);
+ } on AnalysisException catch (exception, stackTrace) {
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.recordResolutionError(new CaughtException(exception, stackTrace));
+ _cache.put(source, dartCopy);
+ AnalysisEngine.instance.logger.logError2("Internal error trying to create a ResolveDartLibraryTask", new CaughtException(exception, stackTrace));
+ }
+ return new AnalysisContextImpl_TaskData(null, false);
+ }
+
+ /**
+ * Create a [ResolveHtmlTask] for the given source, marking the resolved unit as being
+ * in-process.
+ *
+ * @param source the source whose content is to be resolved
+ * @param htmlEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createResolveHtmlTask(Source source, HtmlEntry htmlEntry) {
+ if (htmlEntry.getState(HtmlEntry.PARSED_UNIT) != CacheState.VALID) {
+ return _createParseHtmlTask(source, htmlEntry);
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setState(HtmlEntry.RESOLVED_UNIT, CacheState.IN_PROCESS);
+ _cache.put(source, htmlCopy);
+ return new AnalysisContextImpl_TaskData(new ResolveHtmlTask(this, source, htmlCopy.modificationTime, htmlCopy.getValue(HtmlEntry.PARSED_UNIT)), false);
+ }
+
+ /**
+ * Create a [ScanDartTask] for the given source, marking the scan errors as being
+ * in-process.
+ *
+ * @param source the source whose content is to be scanned
+ * @param dartEntry the entry for the source
+ * @return task data representing the created task
+ */
+ AnalysisContextImpl_TaskData _createScanDartTask(Source source, DartEntry dartEntry) {
+ if (dartEntry.getState(SourceEntry.CONTENT) != CacheState.VALID) {
+ return _createGetContentTask(source, dartEntry);
+ }
+ String content = dartEntry.getValue(SourceEntry.CONTENT);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.setState(SourceEntry.CONTENT, CacheState.FLUSHED);
+ dartCopy.setState(DartEntry.SCAN_ERRORS, CacheState.IN_PROCESS);
+ _cache.put(source, dartCopy);
+ return new AnalysisContextImpl_TaskData(new ScanDartTask(this, source, dartCopy.modificationTime, content), false);
+ }
+
+ /**
+ * Create a source information object suitable for the given source. Return the source information
+ * object that was created, or `null` if the source should not be tracked by this context.
+ *
+ * @param source the source for which an information object is being created
+ * @param explicitlyAdded `true` if the source was explicitly added to the context
+ * @return the source information object that was created
+ */
+ SourceEntry _createSourceEntry(Source source, bool explicitlyAdded) {
+ String name = source.shortName;
+ if (AnalysisEngine.isHtmlFileName(name)) {
+ HtmlEntryImpl htmlEntry = new HtmlEntryImpl();
+ htmlEntry.modificationTime = getModificationStamp(source);
+ htmlEntry.explicitlyAdded = explicitlyAdded;
+ _cache.put(source, htmlEntry);
+ return htmlEntry;
+ } else {
+ DartEntryImpl dartEntry = new DartEntryImpl();
+ dartEntry.modificationTime = getModificationStamp(source);
+ dartEntry.explicitlyAdded = explicitlyAdded;
+ _cache.put(source, dartEntry);
+ return dartEntry;
+ }
+ }
+
+ /**
+ * Return a string with debugging information about the given source (the full name and
+ * modification stamp of the source).
+ *
+ * @param source the source for which a debugging string is to be produced
+ * @return debugging information about the given source
+ */
+ String _debuggingString(Source source) => "'${source.fullName}' [${getModificationStamp(source)}]";
+
+ /**
+ * Return an array containing all of the change notices that are waiting to be returned. If there
+ * are no notices, then return either `null` or an empty array, depending on the value of
+ * the argument.
+ *
+ * @param nullIfEmpty `true` if `null` should be returned when there are no notices
+ * @return the change notices that are waiting to be returned
+ */
+ List<ChangeNotice> _getChangeNotices(bool nullIfEmpty) {
+ if (_pendingNotices.isEmpty) {
+ if (nullIfEmpty) {
+ return null;
+ }
+ return ChangeNoticeImpl.EMPTY_ARRAY;
+ }
+ List<ChangeNotice> notices = new List.from(_pendingNotices.values);
+ _pendingNotices.clear();
+ return notices;
+ }
+
+ /**
+ * Given a source for a Dart file and the library that contains it, return the data represented by
+ * the given descriptor that is associated with that source. This method assumes that the data can
+ * be produced by generating hints for the library if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source representing the Dart file
+ * @param librarySource the source representing the library containing the Dart file
+ * @param dartEntry the entry representing the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ Object _getDartHintData(Source unitSource, Source librarySource, DartEntry dartEntry, DataDescriptor descriptor) {
+ dartEntry = _cacheDartHintData(unitSource, librarySource, dartEntry, descriptor);
+ if (identical(descriptor, DartEntry.ELEMENT)) {
+ return dartEntry.getValue(descriptor);
+ }
+ return dartEntry.getValueInLibrary(descriptor, librarySource);
+ }
+
+ /**
+ * Given a source for a Dart file, return the data represented by the given descriptor that is
+ * associated with that source. This method assumes that the data can be produced by parsing the
+ * source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the Dart file
+ * @param dartEntry the cache entry associated with the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be parsed
+ */
+ Object _getDartParseData(Source source, DartEntry dartEntry, DataDescriptor descriptor) {
+ dartEntry = _cacheDartParseData(source, dartEntry, descriptor);
+ if (identical(descriptor, DartEntry.PARSED_UNIT)) {
+ _accessedAst(source);
+ return dartEntry.anyParsedCompilationUnit;
+ }
+ return dartEntry.getValue(descriptor);
+ }
+
+ /**
+ * Given a source for a Dart file, return the data represented by the given descriptor that is
+ * associated with that source, or the given default value if the source is not a Dart file. This
+ * method assumes that the data can be produced by parsing the source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @param defaultValue the value to be returned if the source is not a Dart file
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be parsed
+ */
+ Object _getDartParseData2(Source source, DataDescriptor descriptor, Object defaultValue) {
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ return defaultValue;
+ }
+ try {
+ return _getDartParseData(source, dartEntry, descriptor);
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not compute ${descriptor.toString()}", exception);
+ return defaultValue;
+ }
+ }
+
+ /**
+ * Given a source for a Dart file and the library that contains it, return the data represented by
+ * the given descriptor that is associated with that source. This method assumes that the data can
+ * be produced by resolving the source in the context of the library if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source representing the Dart file
+ * @param librarySource the source representing the library containing the Dart file
+ * @param dartEntry the entry representing the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ Object _getDartResolutionData(Source unitSource, Source librarySource, DartEntry dartEntry, DataDescriptor descriptor) {
+ dartEntry = _cacheDartResolutionData(unitSource, librarySource, dartEntry, descriptor);
+ if (identical(descriptor, DartEntry.ELEMENT)) {
+ return dartEntry.getValue(descriptor);
+ } else if (identical(descriptor, DartEntry.RESOLVED_UNIT)) {
+ _accessedAst(unitSource);
+ }
+ return dartEntry.getValueInLibrary(descriptor, librarySource);
+ }
+
+ /**
+ * Given a source for a Dart file and the library that contains it, return the data represented by
+ * the given descriptor that is associated with that source, or the given default value if the
+ * source is not a Dart file. This method assumes that the data can be produced by resolving the
+ * source in the context of the library if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source representing the Dart file
+ * @param librarySource the source representing the library containing the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @param defaultValue the value to be returned if the source is not a Dart file
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ Object _getDartResolutionData2(Source unitSource, Source librarySource, DataDescriptor descriptor, Object defaultValue) {
+ DartEntry dartEntry = _getReadableDartEntry(unitSource);
+ if (dartEntry == null) {
+ return defaultValue;
+ }
+ try {
+ return _getDartResolutionData(unitSource, librarySource, dartEntry, descriptor);
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not compute ${descriptor.toString()}", exception);
+ return defaultValue;
+ }
+ }
+
+ /**
+ * Given a source for a Dart file, return the data represented by the given descriptor that is
+ * associated with that source. This method assumes that the data can be produced by scanning the
+ * source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the Dart file
+ * @param dartEntry the cache entry associated with the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be scanned
+ */
+ Object _getDartScanData(Source source, DartEntry dartEntry, DataDescriptor descriptor) {
+ dartEntry = _cacheDartScanData(source, dartEntry, descriptor);
+ return dartEntry.getValue(descriptor);
+ }
+
+ /**
+ * Given a source for a Dart file, return the data represented by the given descriptor that is
+ * associated with that source, or the given default value if the source is not a Dart file. This
+ * method assumes that the data can be produced by scanning the source if it is not already
+ * cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @param defaultValue the value to be returned if the source is not a Dart file
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be scanned
+ */
+ Object _getDartScanData2(Source source, DataDescriptor descriptor, Object defaultValue) {
+ DartEntry dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ return defaultValue;
+ }
+ try {
+ return _getDartScanData(source, dartEntry, descriptor);
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not compute ${descriptor.toString()}", exception);
+ return defaultValue;
+ }
+ }
+
+ /**
+ * Given a source for a Dart file and the library that contains it, return the data represented by
+ * the given descriptor that is associated with that source. This method assumes that the data can
+ * be produced by verifying the source within the given library if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param unitSource the source representing the Dart file
+ * @param librarySource the source representing the library containing the Dart file
+ * @param dartEntry the entry representing the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ Object _getDartVerificationData(Source unitSource, Source librarySource, DartEntry dartEntry, DataDescriptor descriptor) {
+ dartEntry = _cacheDartVerificationData(unitSource, librarySource, dartEntry, descriptor);
+ return dartEntry.getValueInLibrary(descriptor, librarySource);
+ }
+
+ /**
+ * Given a source for an HTML file, return the data represented by the given descriptor that is
+ * associated with that source, or the given default value if the source is not an HTML file. This
+ * method assumes that the data can be produced by parsing the source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the Dart file
+ * @param descriptor the descriptor representing the data to be returned
+ * @param defaultValue the value to be returned if the source is not an HTML file
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be parsed
+ */
+ Object _getHtmlParseData(Source source, DataDescriptor descriptor, Object defaultValue) {
+ HtmlEntry htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ return defaultValue;
+ }
+ htmlEntry = _cacheHtmlParseData(source, htmlEntry, descriptor);
+ if (identical(descriptor, HtmlEntry.PARSED_UNIT)) {
+ _accessedAst(source);
+ return htmlEntry.anyParsedUnit;
+ }
+ return htmlEntry.getValue(descriptor);
+ }
+
+ /**
+ * Given a source for an HTML file, return the data represented by the given descriptor that is
+ * associated with that source, or the given default value if the source is not an HTML file. This
+ * method assumes that the data can be produced by resolving the source if it is not already
+ * cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the HTML file
+ * @param descriptor the descriptor representing the data to be returned
+ * @param defaultValue the value to be returned if the source is not an HTML file
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ Object _getHtmlResolutionData(Source source, DataDescriptor descriptor, Object defaultValue) {
+ HtmlEntry htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ return defaultValue;
+ }
+ try {
+ return _getHtmlResolutionData2(source, htmlEntry, descriptor);
+ } on ObsoleteSourceAnalysisException catch (exception) {
+ AnalysisEngine.instance.logger.logInformation2("Could not compute ${descriptor.toString()}", exception);
+ return defaultValue;
+ }
+ }
+
+ /**
+ * Given a source for an HTML file, return the data represented by the given descriptor that is
+ * associated with that source. This method assumes that the data can be produced by resolving the
+ * source if it is not already cached.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment.
+ *
+ * @param source the source representing the HTML file
+ * @param htmlEntry the entry representing the HTML file
+ * @param descriptor the descriptor representing the data to be returned
+ * @return the requested data about the given source
+ * @throws AnalysisException if data could not be returned because the source could not be
+ * resolved
+ */
+ Object _getHtmlResolutionData2(Source source, HtmlEntry htmlEntry, DataDescriptor descriptor) {
+ htmlEntry = _cacheHtmlResolutionData(source, htmlEntry, descriptor);
+ if (identical(descriptor, HtmlEntry.RESOLVED_UNIT)) {
+ _accessedAst(source);
+ }
+ return htmlEntry.getValue(descriptor);
+ }
+
+ /**
+ * Look through the cache for a task that needs to be performed. Return the task that was found,
+ * or `null` if there is no more work to be done.
+ *
+ * @return the next task that needs to be performed
+ */
+ AnalysisTask get nextAnalysisTask {
+ bool hintsEnabled = _options.hint;
+ bool hasBlockedTask = false;
+ //
+ // Look for incremental analysis
+ //
+ if (_incrementalAnalysisCache != null && _incrementalAnalysisCache.hasWork) {
+ AnalysisTask task = new IncrementalAnalysisTask(this, _incrementalAnalysisCache);
+ _incrementalAnalysisCache = null;
+ return task;
+ }
+ //
+ // Look for a priority source that needs to be analyzed.
+ //
+ int priorityCount = _priorityOrder.length;
+ for (int i = 0; i < priorityCount; i++) {
+ Source source = _priorityOrder[i];
+ AnalysisContextImpl_TaskData taskData = _getNextAnalysisTaskForSource(source, _cache.get(source), true, hintsEnabled);
+ AnalysisTask task = taskData.task;
+ if (task != null) {
+ return task;
+ } else if (taskData.isBlocked) {
+ hasBlockedTask = true;
+ }
+ }
+ if (_neededForResolution != null) {
+ List<Source> sourcesToRemove = new List<Source>();
+ for (Source source in _neededForResolution) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ if (!dartEntry.hasResolvableCompilationUnit) {
+ if (dartEntry.getState(DartEntry.PARSED_UNIT) == CacheState.ERROR) {
+ sourcesToRemove.add(source);
+ } else {
+ AnalysisContextImpl_TaskData taskData = _createParseDartTask(source, dartEntry);
+ AnalysisTask task = taskData.task;
+ if (task != null) {
+ return task;
+ } else if (taskData.isBlocked) {
+ hasBlockedTask = true;
+ }
+ }
+ }
+ }
+ }
+ int count = sourcesToRemove.length;
+ for (int i = 0; i < count; i++) {
+ _neededForResolution.remove(sourcesToRemove[i]);
+ }
+ }
+ //
+ // Look for a non-priority source that needs to be analyzed.
+ //
+ List<Source> sourcesToRemove = new List<Source>();
+ WorkManager_WorkIterator sources = _workManager.iterator();
+ try {
+ while (sources.hasNext) {
+ Source source = sources.next();
+ AnalysisContextImpl_TaskData taskData = _getNextAnalysisTaskForSource(source, _cache.get(source), false, hintsEnabled);
+ AnalysisTask task = taskData.task;
+ if (task != null) {
+ return task;
+ } else if (taskData.isBlocked) {
+ hasBlockedTask = true;
+ } else {
+ sourcesToRemove.add(source);
+ }
+ }
+ } finally {
+ int count = sourcesToRemove.length;
+ for (int i = 0; i < count; i++) {
+ _workManager.remove(sourcesToRemove[i]);
+ }
+ }
+ // //
+ // // Look for a non-priority source that needs to be analyzed and was missed by the loop above.
+ // //
+ // for (Map.Entry<Source, SourceEntry> entry : cache.entrySet()) {
+ // source = entry.getKey();
+ // TaskData taskData = getNextAnalysisTaskForSource(source, entry.getValue(), false, hintsEnabled);
+ // AnalysisTask task = taskData.getTask();
+ // if (task != null) {
+ // System.out.println("Failed to analyze " + source.getFullName());
+ // return task;
+ // }
+ // }
+ if (hasBlockedTask) {
+ // All of the analysis work is blocked waiting for an asynchronous task to complete.
+ return WaitForAsyncTask.instance;
+ }
+ return null;
+ }
+
+ /**
+ * Look at the given source to see whether a task needs to be performed related to it. Return the
+ * task that should be performed, or `null` if there is no more work to be done for the
+ * source.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param source the source to be checked
+ * @param sourceEntry the cache entry associated with the source
+ * @param isPriority `true` if the source is a priority source
+ * @param hintsEnabled `true` if hints are currently enabled
+ * @return the next task that needs to be performed for the given source
+ */
+ AnalysisContextImpl_TaskData _getNextAnalysisTaskForSource(Source source, SourceEntry sourceEntry, bool isPriority, bool hintsEnabled) {
+ // Refuse to generate tasks for html based files that are above 1500 KB
+ if (_isTooBigHtmlSourceEntry(source, sourceEntry)) {
+ // TODO (jwren) we still need to report an error of some kind back to the client.
+ return new AnalysisContextImpl_TaskData(null, false);
+ }
+ if (sourceEntry == null) {
+ return new AnalysisContextImpl_TaskData(null, false);
+ }
+ CacheState contentState = sourceEntry.getState(SourceEntry.CONTENT);
+ if (contentState == CacheState.INVALID) {
+ return _createGetContentTask(source, sourceEntry);
+ } else if (contentState == CacheState.IN_PROCESS) {
+ // We are already in the process of getting the content. There's nothing else we can do with
+ // this source until that's complete.
+ return new AnalysisContextImpl_TaskData(null, true);
+ } else if (contentState == CacheState.ERROR) {
+ // We have done all of the analysis we can for this source because we cannot get its content.
+ return new AnalysisContextImpl_TaskData(null, false);
+ }
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ CacheState scanErrorsState = dartEntry.getState(DartEntry.SCAN_ERRORS);
+ if (scanErrorsState == CacheState.INVALID || (isPriority && scanErrorsState == CacheState.FLUSHED)) {
+ return _createScanDartTask(source, dartEntry);
+ }
+ CacheState parseErrorsState = dartEntry.getState(DartEntry.PARSE_ERRORS);
+ if (parseErrorsState == CacheState.INVALID || (isPriority && parseErrorsState == CacheState.FLUSHED)) {
+ return _createParseDartTask(source, dartEntry);
+ }
+ if (isPriority && parseErrorsState != CacheState.ERROR) {
+ if (!dartEntry.hasResolvableCompilationUnit) {
+ return _createParseDartTask(source, dartEntry);
+ }
+ }
+ SourceKind kind = dartEntry.getValue(DartEntry.SOURCE_KIND);
+ if (kind == SourceKind.UNKNOWN) {
+ return _createParseDartTask(source, dartEntry);
+ } else if (kind == SourceKind.LIBRARY) {
+ CacheState elementState = dartEntry.getState(DartEntry.ELEMENT);
+ if (elementState == CacheState.INVALID) {
+ return _createResolveDartLibraryTask(source, dartEntry);
+ }
+ }
+ List<Source> librariesContaining = dartEntry.getValue(DartEntry.CONTAINING_LIBRARIES);
+ for (Source librarySource in librariesContaining) {
+ SourceEntry librarySourceEntry = _cache.get(librarySource);
+ if (librarySourceEntry is DartEntry) {
+ DartEntry libraryEntry = librarySourceEntry;
+ CacheState elementState = libraryEntry.getState(DartEntry.ELEMENT);
+ if (elementState == CacheState.INVALID || (isPriority && elementState == CacheState.FLUSHED)) {
+ //return createResolveDartLibraryTask(librarySource, (DartEntry) libraryEntry);
+ DartEntryImpl libraryCopy = libraryEntry.writableCopy;
+ libraryCopy.setState(DartEntry.ELEMENT, CacheState.IN_PROCESS);
+ _cache.put(librarySource, libraryCopy);
+ return new AnalysisContextImpl_TaskData(new ResolveDartLibraryTask(this, source, librarySource), false);
+ }
+ CacheState resolvedUnitState = dartEntry.getStateInLibrary(DartEntry.RESOLVED_UNIT, librarySource);
+ if (resolvedUnitState == CacheState.INVALID || (isPriority && resolvedUnitState == CacheState.FLUSHED)) {
+ //
+ // The commented out lines below are an optimization that doesn't quite work yet. The
+ // problem is that if the source was not resolved because it wasn't part of any library,
+ // then there won't be any elements in the element model that we can use to resolve it.
+ //
+ //LibraryElement libraryElement = libraryEntry.getValue(DartEntry.ELEMENT);
+ //if (libraryElement != null) {
+ // return new ResolveDartUnitTask(this, source, libraryElement);
+ //}
+ // Possibly replace with: return createResolveDartLibraryTask(librarySource, (DartEntry) libraryEntry);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.setStateInLibrary(DartEntry.RESOLVED_UNIT, librarySource, CacheState.IN_PROCESS);
+ _cache.put(source, dartCopy);
+ return new AnalysisContextImpl_TaskData(new ResolveDartLibraryTask(this, source, librarySource), false);
+ }
+ if (_generateSdkErrors || !source.isInSystemLibrary) {
+ CacheState verificationErrorsState = dartEntry.getStateInLibrary(DartEntry.VERIFICATION_ERRORS, librarySource);
+ if (verificationErrorsState == CacheState.INVALID || (isPriority && verificationErrorsState == CacheState.FLUSHED)) {
+ return _createGenerateDartErrorsTask(source, dartEntry, librarySource, libraryEntry);
+ }
+ if (hintsEnabled) {
+ CacheState hintsState = dartEntry.getStateInLibrary(DartEntry.HINTS, librarySource);
+ if (hintsState == CacheState.INVALID || (isPriority && hintsState == CacheState.FLUSHED)) {
+ return _createGenerateDartHintsTask(source, dartEntry, librarySource, libraryEntry);
+ }
+ }
+ }
+ }
+ }
+ } else if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ CacheState parseErrorsState = htmlEntry.getState(HtmlEntry.PARSE_ERRORS);
+ if (parseErrorsState == CacheState.INVALID || (isPriority && parseErrorsState == CacheState.FLUSHED)) {
+ return _createParseHtmlTask(source, htmlEntry);
+ }
+ if (isPriority && parseErrorsState != CacheState.ERROR) {
+ ht.HtmlUnit parsedUnit = htmlEntry.anyParsedUnit;
+ if (parsedUnit == null) {
+ return _createParseHtmlTask(source, htmlEntry);
+ }
+ }
+ CacheState resolvedUnitState = htmlEntry.getState(HtmlEntry.RESOLVED_UNIT);
+ if (resolvedUnitState == CacheState.INVALID || (isPriority && resolvedUnitState == CacheState.FLUSHED)) {
+ return _createResolveHtmlTask(source, htmlEntry);
+ }
+ //
+ // Angular support
+ //
+ if (_options.analyzeAngular) {
+ // Try to resolve the HTML as an Angular entry point.
+ CacheState angularEntryState = htmlEntry.getState(HtmlEntry.ANGULAR_ENTRY);
+ if (angularEntryState == CacheState.INVALID || (isPriority && angularEntryState == CacheState.FLUSHED)) {
+ return _createResolveAngularEntryHtmlTask(source, htmlEntry);
+ }
+ // Try to resolve the HTML as an Angular application part.
+ CacheState angularErrorsState = htmlEntry.getState(HtmlEntry.ANGULAR_ERRORS);
+ if (angularErrorsState == CacheState.INVALID || (isPriority && angularErrorsState == CacheState.FLUSHED)) {
+ return _createResolveAngularComponentTemplateTask(source, htmlEntry);
+ }
+ }
+ //
+ // Polymer support
+ //
+ if (_options.analyzePolymer) {
+ // Build elements.
+ CacheState polymerBuildErrorsState = htmlEntry.getState(HtmlEntry.POLYMER_BUILD_ERRORS);
+ if (polymerBuildErrorsState == CacheState.INVALID || (isPriority && polymerBuildErrorsState == CacheState.FLUSHED)) {
+ return _createPolymerBuildHtmlTask(source, htmlEntry);
+ }
+ // Resolve references.
+ CacheState polymerResolutionErrorsState = htmlEntry.getState(HtmlEntry.POLYMER_RESOLUTION_ERRORS);
+ if (polymerResolutionErrorsState == CacheState.INVALID || (isPriority && polymerResolutionErrorsState == CacheState.FLUSHED)) {
+ return _createPolymerResolveHtmlTask(source, htmlEntry);
+ }
+ }
+ }
+ return new AnalysisContextImpl_TaskData(null, false);
+ }
+
+ /**
+ * Return a change notice for the given source, creating one if one does not already exist.
+ *
+ * @param source the source for which changes are being reported
+ * @return a change notice for the given source
+ */
+ ChangeNoticeImpl _getNotice(Source source) {
+ ChangeNoticeImpl notice = _pendingNotices[source];
+ if (notice == null) {
+ notice = new ChangeNoticeImpl(source);
+ _pendingNotices[source] = notice;
+ }
+ return notice;
+ }
+
+ /**
+ * Return the cache entry associated with the given source, or `null` if the source is not a
+ * Dart file.
+ *
+ * @param source the source for which a cache entry is being sought
+ * @return the source cache entry associated with the given source
+ */
+ DartEntry _getReadableDartEntry(Source source) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ sourceEntry = _createSourceEntry(source, false);
+ }
+ if (sourceEntry is DartEntry) {
+ return sourceEntry as DartEntry;
+ }
+ return null;
+ }
+
+ /**
+ * Return the cache entry associated with the given source, or `null` if the source is not
+ * an HTML file.
+ *
+ * @param source the source for which a cache entry is being sought
+ * @return the source cache entry associated with the given source
+ */
+ HtmlEntry _getReadableHtmlEntry(Source source) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ sourceEntry = _createSourceEntry(source, false);
+ }
+ if (sourceEntry is HtmlEntry) {
+ return sourceEntry as HtmlEntry;
+ }
+ return null;
+ }
+
+ /**
+ * Return the cache entry associated with the given source, creating it if necessary.
+ *
+ * @param source the source for which a cache entry is being sought
+ * @return the source cache entry associated with the given source
+ */
+ SourceEntry _getReadableSourceEntry(Source source) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ sourceEntry = _createSourceEntry(source, false);
+ }
+ return sourceEntry;
+ }
+
+ /**
+ * Return the cache entry associated with the given source, or `null` if there is no entry
+ * associated with the source.
+ *
+ * @param source the source for which a cache entry is being sought
+ * @return the source cache entry associated with the given source
+ */
+ SourceEntry _getReadableSourceEntryOrNull(Source source) => _cache.get(source);
+
+ /**
+ * Return a resolved compilation unit corresponding to the given element in the given library, or
+ * `null` if the information is not cached.
+ *
+ * @param element the element representing the compilation unit
+ * @param librarySource the source representing the library containing the unit
+ * @return the specified resolved compilation unit
+ */
+ TimestampedData<CompilationUnit> _getResolvedUnit(CompilationUnitElement element, Source librarySource) {
+ SourceEntry sourceEntry = _cache.get(element.source);
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ if (dartEntry.getStateInLibrary(DartEntry.RESOLVED_UNIT, librarySource) == CacheState.VALID) {
+ return new TimestampedData<CompilationUnit>(dartEntry.modificationTime, dartEntry.getValueInLibrary(DartEntry.RESOLVED_UNIT, librarySource));
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Return an array containing all of the sources known to this context that have the given kind.
+ *
+ * @param kind the kind of sources to be returned
+ * @return all of the sources known to this context that have the given kind
+ */
+ List<Source> _getSources(SourceKind kind) {
+ List<Source> sources = new List<Source>();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ if (iterator.value.kind == kind) {
+ sources.add(iterator.key);
+ }
+ }
+ return new List.from(sources);
+ }
+
+ /**
+ * Look at the given source to see whether a task needs to be performed related to it. If so, add
+ * the source to the set of sources that need to be processed. This method duplicates, and must
+ * therefore be kept in sync with,
+ * [getNextAnalysisTask]. This method is intended to
+ * be used for testing purposes only.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param source the source to be checked
+ * @param sourceEntry the cache entry associated with the source
+ * @param isPriority `true` if the source is a priority source
+ * @param hintsEnabled `true` if hints are currently enabled
+ * @param sources the set to which sources should be added
+ */
+ void _getSourcesNeedingProcessing(Source source, SourceEntry sourceEntry, bool isPriority, bool hintsEnabled, HashSet<Source> sources) {
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ CacheState scanErrorsState = dartEntry.getState(DartEntry.SCAN_ERRORS);
+ if (scanErrorsState == CacheState.INVALID || (isPriority && scanErrorsState == CacheState.FLUSHED)) {
+ sources.add(source);
+ return;
+ }
+ CacheState parseErrorsState = dartEntry.getState(DartEntry.PARSE_ERRORS);
+ if (parseErrorsState == CacheState.INVALID || (isPriority && parseErrorsState == CacheState.FLUSHED)) {
+ sources.add(source);
+ return;
+ }
+ if (isPriority) {
+ if (!dartEntry.hasResolvableCompilationUnit) {
+ sources.add(source);
+ return;
+ }
+ }
+ for (Source librarySource in getLibrariesContaining(source)) {
+ SourceEntry libraryEntry = _cache.get(librarySource);
+ if (libraryEntry is DartEntry) {
+ CacheState elementState = libraryEntry.getState(DartEntry.ELEMENT);
+ if (elementState == CacheState.INVALID || (isPriority && elementState == CacheState.FLUSHED)) {
+ sources.add(source);
+ return;
+ }
+ CacheState resolvedUnitState = dartEntry.getStateInLibrary(DartEntry.RESOLVED_UNIT, librarySource);
+ if (resolvedUnitState == CacheState.INVALID || (isPriority && resolvedUnitState == CacheState.FLUSHED)) {
+ LibraryElement libraryElement = libraryEntry.getValue(DartEntry.ELEMENT);
+ if (libraryElement != null) {
+ sources.add(source);
+ return;
+ }
+ }
+ if (_generateSdkErrors || !source.isInSystemLibrary) {
+ CacheState verificationErrorsState = dartEntry.getStateInLibrary(DartEntry.VERIFICATION_ERRORS, librarySource);
+ if (verificationErrorsState == CacheState.INVALID || (isPriority && verificationErrorsState == CacheState.FLUSHED)) {
+ LibraryElement libraryElement = libraryEntry.getValue(DartEntry.ELEMENT);
+ if (libraryElement != null) {
+ sources.add(source);
+ return;
+ }
+ }
+ if (hintsEnabled) {
+ CacheState hintsState = dartEntry.getStateInLibrary(DartEntry.HINTS, librarySource);
+ if (hintsState == CacheState.INVALID || (isPriority && hintsState == CacheState.FLUSHED)) {
+ LibraryElement libraryElement = libraryEntry.getValue(DartEntry.ELEMENT);
+ if (libraryElement != null) {
+ sources.add(source);
+ return;
+ }
+ }
+ }
+ }
+ }
+ }
+ } else if (sourceEntry is HtmlEntry) {
+ HtmlEntry htmlEntry = sourceEntry;
+ CacheState parsedUnitState = htmlEntry.getState(HtmlEntry.PARSED_UNIT);
+ if (parsedUnitState == CacheState.INVALID || (isPriority && parsedUnitState == CacheState.FLUSHED)) {
+ sources.add(source);
+ return;
+ }
+ CacheState resolvedUnitState = htmlEntry.getState(HtmlEntry.RESOLVED_UNIT);
+ if (resolvedUnitState == CacheState.INVALID || (isPriority && resolvedUnitState == CacheState.FLUSHED)) {
+ sources.add(source);
+ return;
+ }
+ // Angular
+ if (_options.analyzeAngular) {
+ CacheState angularErrorsState = htmlEntry.getState(HtmlEntry.ANGULAR_ERRORS);
+ if (angularErrorsState == CacheState.INVALID || (isPriority && angularErrorsState == CacheState.FLUSHED)) {
+ AngularApplication entryInfo = htmlEntry.getValue(HtmlEntry.ANGULAR_ENTRY);
+ if (entryInfo != null) {
+ sources.add(source);
+ return;
+ }
+ AngularApplication applicationInfo = htmlEntry.getValue(HtmlEntry.ANGULAR_APPLICATION);
+ if (applicationInfo != null) {
+ AngularComponentElement component = htmlEntry.getValue(HtmlEntry.ANGULAR_COMPONENT);
+ if (component != null) {
+ sources.add(source);
+ return;
+ }
+ }
+ }
+ }
+ // Polymer
+ if (_options.analyzePolymer) {
+ // Elements building.
+ CacheState polymerBuildErrorsState = htmlEntry.getState(HtmlEntry.POLYMER_BUILD_ERRORS);
+ if (polymerBuildErrorsState == CacheState.INVALID || (isPriority && polymerBuildErrorsState == CacheState.FLUSHED)) {
+ sources.add(source);
+ }
+ // Resolution.
+ CacheState polymerResolutionErrorsState = htmlEntry.getState(HtmlEntry.POLYMER_RESOLUTION_ERRORS);
+ if (polymerResolutionErrorsState == CacheState.INVALID || (isPriority && polymerResolutionErrorsState == CacheState.FLUSHED)) {
+ sources.add(source);
+ }
+ }
+ }
+ }
+
+ /**
+ * Invalidate all of the resolution results computed by this context.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param invalidateUris `true` if the cached results of converting URIs to source files
+ * should also be invalidated.
+ */
+ void _invalidateAllLocalResolutionInformation(bool invalidateUris) {
+ HashMap<Source, List<Source>> oldPartMap = new HashMap<Source, List<Source>>();
+ MapIterator<Source, SourceEntry> iterator = _privatePartition.iterator();
+ while (iterator.moveNext()) {
+ Source source = iterator.key;
+ SourceEntry sourceEntry = iterator.value;
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntryImpl htmlCopy = sourceEntry.writableCopy;
+ htmlCopy.invalidateAllResolutionInformation(invalidateUris);
+ iterator.value = htmlCopy;
+ _workManager.add(source, SourcePriority.HTML);
+ } else if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ oldPartMap[source] = dartEntry.getValue(DartEntry.INCLUDED_PARTS);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.invalidateAllResolutionInformation(invalidateUris);
+ iterator.value = dartCopy;
+ _workManager.add(source, _computePriority(dartCopy));
+ }
+ }
+ _removeFromPartsUsingMap(oldPartMap);
+ }
+
+ /**
+ * In response to a change to Angular entry point [HtmlElement], invalidate any results that
+ * depend on it.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * <b>Note:</b> Any cache entries that were accessed before this method was invoked must be
+ * re-accessed after this method returns.
+ *
+ * @param entryCopy the [HtmlEntryImpl] of the (maybe) Angular entry point being invalidated
+ */
+ void _invalidateAngularResolution(HtmlEntryImpl entryCopy) {
+ AngularApplication application = entryCopy.getValue(HtmlEntry.ANGULAR_ENTRY);
+ if (application == null) {
+ return;
+ }
+ _angularApplications.remove(application);
+ // invalidate Entry
+ entryCopy.setState(HtmlEntry.ANGULAR_ENTRY, CacheState.INVALID);
+ // reset HTML sources
+ List<AngularElement> oldAngularElements = application.elements;
+ for (AngularElement angularElement in oldAngularElements) {
+ if (angularElement is AngularHasTemplateElement) {
+ AngularHasTemplateElement hasTemplate = angularElement;
+ Source templateSource = hasTemplate.templateSource;
+ if (templateSource != null) {
+ HtmlEntry htmlEntry = _getReadableHtmlEntry(templateSource);
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setValue(HtmlEntry.ANGULAR_APPLICATION, null);
+ htmlCopy.setValue(HtmlEntry.ANGULAR_COMPONENT, null);
+ htmlCopy.setState(HtmlEntry.ANGULAR_ERRORS, CacheState.INVALID);
+ _cache.put(templateSource, htmlCopy);
+ _workManager.add(templateSource, SourcePriority.HTML);
+ }
+ }
+ }
+ // reset Dart sources
+ List<Source> oldElementSources = application.elementSources;
+ for (Source elementSource in oldElementSources) {
+ DartEntry dartEntry = _getReadableDartEntry(elementSource);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.setValue(DartEntry.ANGULAR_ERRORS, AnalysisError.NO_ERRORS);
+ _cache.put(elementSource, dartCopy);
+ // notify about (disappeared) Angular errors
+ ChangeNoticeImpl notice = _getNotice(elementSource);
+ notice.setErrors(dartCopy.allErrors, dartEntry.getValue(SourceEntry.LINE_INFO));
+ }
+ }
+
+ /**
+ * In response to a change to at least one of the compilation units in the given library,
+ * invalidate any results that are dependent on the result of resolving that library.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * <b>Note:</b> Any cache entries that were accessed before this method was invoked must be
+ * re-accessed after this method returns.
+ *
+ * @param librarySource the source of the library being invalidated
+ */
+ void _invalidateLibraryResolution(Source librarySource) {
+ // TODO(brianwilkerson) This could be optimized. There's no need to flush all of these entries
+ // if the public namespace hasn't changed, which will be a fairly common case. The question is
+ // whether we can afford the time to compute the namespace to look for differences.
+ DartEntry libraryEntry = _getReadableDartEntry(librarySource);
+ if (libraryEntry != null) {
+ List<Source> includedParts = libraryEntry.getValue(DartEntry.INCLUDED_PARTS);
+ DartEntryImpl libraryCopy = libraryEntry.writableCopy;
+ libraryCopy.invalidateAllResolutionInformation(false);
+ _cache.put(librarySource, libraryCopy);
+ _workManager.add(librarySource, SourcePriority.LIBRARY);
+ for (Source partSource in includedParts) {
+ SourceEntry partEntry = _cache.get(partSource);
+ if (partEntry is DartEntry) {
+ DartEntryImpl partCopy = partEntry.writableCopy;
+ partCopy.invalidateAllResolutionInformation(false);
+ _cache.put(partSource, partCopy);
+ }
+ }
+ }
+ // invalidate Angular applications
+ List<AngularApplication> angularApplicationsCopy = [];
+ for (AngularApplication application in angularApplicationsCopy) {
+ if (application.dependsOn(librarySource)) {
+ Source entryPointSource = application.entryPoint;
+ HtmlEntry entry = _getReadableHtmlEntry(entryPointSource);
+ HtmlEntryImpl entryCopy = entry.writableCopy;
+ _invalidateAngularResolution(entryCopy);
+ _cache.put(entryPointSource, entryCopy);
+ _workManager.add(entryPointSource, SourcePriority.HTML);
+ }
+ }
+ }
+
+ /**
+ * Return `true` if this library is, or depends on, dart:html.
+ *
+ * @param library the library being tested
+ * @param visitedLibraries a collection of the libraries that have been visited, used to prevent
+ * infinite recursion
+ * @return `true` if this library is, or depends on, dart:html
+ */
+ bool _isClient(LibraryElement library, Source htmlSource, HashSet<LibraryElement> visitedLibraries) {
+ if (visitedLibraries.contains(library)) {
+ return false;
+ }
+ if (library.source == htmlSource) {
+ return true;
+ }
+ visitedLibraries.add(library);
+ for (LibraryElement imported in library.importedLibraries) {
+ if (_isClient(imported, htmlSource, visitedLibraries)) {
+ return true;
+ }
+ }
+ for (LibraryElement exported in library.exportedLibraries) {
+ if (_isClient(exported, htmlSource, visitedLibraries)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ bool _isTooBigHtmlSourceEntry(Source source, SourceEntry sourceEntry) => false;
+
+ /**
+ * Log the given debugging information.
+ *
+ * @param message the message to be added to the log
+ */
+ void _logInformation(String message) {
+ AnalysisEngine.instance.logger.logInformation(message);
+ }
+
+ /**
+ * Log the given debugging information.
+ *
+ * @param message the message to be added to the log
+ * @param exception the exception to be included in the log entry
+ */
+ void _logInformation2(String message, Exception exception) {
+ if (exception == null) {
+ AnalysisEngine.instance.logger.logInformation(message);
+ } else {
+ AnalysisEngine.instance.logger.logInformation2(message, exception);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that a task is about to be performed.
+ *
+ * @param taskDescription a human readable description of the task that is about to be performed
+ */
+ void _notifyAboutToPerformTask(String taskDescription) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].aboutToPerformTask(this, taskDescription);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that the errors associated with the given source has been
+ * updated to the given errors.
+ *
+ * @param source the source containing the errors that were computed
+ * @param errors the errors that were computed
+ * @param lineInfo the line information associated with the source
+ */
+ void _notifyErrors(Source source, List<AnalysisError> errors, LineInfo lineInfo) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].computedErrors(this, source, errors, lineInfo);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that the given source is no longer included in the set of
+ * sources that are being analyzed.
+ *
+ * @param source the source that is no longer being analyzed
+ */
+ void _notifyExcludedSource(Source source) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].excludedSource(this, source);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that the given source is now included in the set of
+ * sources that are being analyzed.
+ *
+ * @param source the source that is now being analyzed
+ */
+ void _notifyIncludedSource(Source source) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].includedSource(this, source);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that the given Dart source was parsed.
+ *
+ * @param source the source that was parsed
+ * @param unit the result of parsing the source
+ */
+ void _notifyParsedDart(Source source, CompilationUnit unit) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].parsedDart(this, source, unit);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that the given HTML source was parsed.
+ *
+ * @param source the source that was parsed
+ * @param unit the result of parsing the source
+ */
+ void _notifyParsedHtml(Source source, ht.HtmlUnit unit) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].parsedHtml(this, source, unit);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that the given Dart source was resolved.
+ *
+ * @param source the source that was resolved
+ * @param unit the result of resolving the source
+ */
+ void _notifyResolvedDart(Source source, CompilationUnit unit) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].resolvedDart(this, source, unit);
+ }
+ }
+
+ /**
+ * Notify all of the analysis listeners that the given HTML source was resolved.
+ *
+ * @param source the source that was resolved
+ * @param unit the result of resolving the source
+ */
+ void _notifyResolvedHtml(Source source, ht.HtmlUnit unit) {
+ int count = _listeners.length;
+ for (int i = 0; i < count; i++) {
+ _listeners[i].resolvedHtml(this, source, unit);
+ }
+ }
+
+ /**
+ * Updates [HtmlEntry]s that correspond to the previously known and new Angular application
+ * information.
+ */
+ void _recordAngularEntryPoint(HtmlEntryImpl entry, ResolveAngularEntryHtmlTask task) {
+ AngularApplication application = task.application;
+ if (application != null) {
+ _angularApplications.add(application);
+ // if this is an entry point, then we already resolved it
+ entry.setValue(HtmlEntry.ANGULAR_ERRORS, task.entryErrors);
+ // schedule HTML templates analysis
+ List<AngularElement> newAngularElements = application.elements;
+ for (AngularElement angularElement in newAngularElements) {
+ if (angularElement is AngularHasTemplateElement) {
+ AngularHasTemplateElement hasTemplate = angularElement;
+ Source templateSource = hasTemplate.templateSource;
+ if (templateSource != null) {
+ HtmlEntry htmlEntry = _getReadableHtmlEntry(templateSource);
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ htmlCopy.setValue(HtmlEntry.ANGULAR_APPLICATION, application);
+ if (hasTemplate is AngularComponentElement) {
+ AngularComponentElement component = hasTemplate;
+ htmlCopy.setValue(HtmlEntry.ANGULAR_COMPONENT, component);
+ }
+ htmlCopy.setState(HtmlEntry.ANGULAR_ERRORS, CacheState.INVALID);
+ _cache.put(templateSource, htmlCopy);
+ _workManager.add(templateSource, SourcePriority.HTML);
+ }
+ }
+ }
+ // update Dart sources errors
+ List<Source> newElementSources = application.elementSources;
+ for (Source elementSource in newElementSources) {
+ DartEntry dartEntry = _getReadableDartEntry(elementSource);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ dartCopy.setValue(DartEntry.ANGULAR_ERRORS, task.getErrors(elementSource));
+ _cache.put(elementSource, dartCopy);
+ // notify about Dart errors
+ ChangeNoticeImpl notice = _getNotice(elementSource);
+ notice.setErrors(dartCopy.allErrors, computeLineInfo(elementSource));
+ }
+ }
+ // remember Angular entry point
+ entry.setValue(HtmlEntry.ANGULAR_ENTRY, application);
+ }
+
+ /**
+ * Given a cache entry and a library element, record the library element and other information
+ * gleaned from the element in the cache entry.
+ *
+ * @param dartCopy the cache entry in which data is to be recorded
+ * @param library the library element used to record information
+ * @param librarySource the source for the library used to record information
+ * @param htmlSource the source for the HTML library
+ */
+ void _recordElementData(DartEntryImpl dartCopy, LibraryElement library, Source librarySource, Source htmlSource) {
+ dartCopy.setValue(DartEntry.ELEMENT, library);
+ dartCopy.setValue(DartEntry.IS_LAUNCHABLE, library.entryPoint != null);
+ dartCopy.setValue(DartEntry.IS_CLIENT, _isClient(library, htmlSource, new HashSet<LibraryElement>()));
+ }
+
+ /**
+ * Record the results produced by performing a [GenerateDartErrorsTask]. If the results were
+ * computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ DartEntry _recordGenerateDartErrorsTask(GenerateDartErrorsTask task) {
+ Source source = task.source;
+ Source librarySource = task.libraryElement.source;
+ CaughtException thrownException = task.exception;
+ DartEntry dartEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! DartEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to verify non-Dart file as a Dart file: ${source.fullName}");
+ }
+ dartEntry = sourceEntry as DartEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (dartEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${source.fullName}");
+ }
+ }
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null) {
+ dartCopy.setValueInLibrary(DartEntry.VERIFICATION_ERRORS, librarySource, task.errors);
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.setErrors(dartCopy.allErrors, dartCopy.getValue(SourceEntry.LINE_INFO));
+ } else {
+ dartCopy.recordVerificationErrorInLibrary(librarySource, thrownException);
+ }
+ _cache.put(source, dartCopy);
+ dartEntry = dartCopy;
+ } else {
+ _logInformation2("Generated errors discarded for ${_debuggingString(source)}; sourceTime = ${sourceTime}, resultTime = ${resultTime}, cacheTime = ${dartEntry.modificationTime}", thrownException);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the source
+ // will be re-verified using the up-to-date sources.
+ //
+ // dartCopy.setState(DartEntry.VERIFICATION_ERRORS, librarySource, CacheState.INVALID);
+ _removeFromParts(source, dartEntry);
+ dartCopy.invalidateAllInformation();
+ dartCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ _workManager.add(source, SourcePriority.UNKNOWN);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-verify the source until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ dartCopy.recordVerificationErrorInLibrary(librarySource, thrownException);
+ }
+ _cache.put(source, dartCopy);
+ dartEntry = dartCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [GenerateDartHintsTask]. If the results were
+ * computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ DartEntry _recordGenerateDartHintsTask(GenerateDartHintsTask task) {
+ Source librarySource = task.libraryElement.source;
+ CaughtException thrownException = task.exception;
+ DartEntry libraryEntry = null;
+ HashMap<Source, TimestampedData<List<AnalysisError>>> hintMap = task.hintMap;
+ if (hintMap == null) {
+ // We don't have any information about which sources to mark as invalid other than the library
+ // source.
+ SourceEntry sourceEntry = _cache.get(librarySource);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(librarySource);
+ } else if (sourceEntry is! DartEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to generate hints for non-Dart file as a Dart file: ${librarySource.fullName}");
+ }
+ if (thrownException == null) {
+ thrownException = new CaughtException(new AnalysisException("GenerateDartHintsTask returned a null hint map without throwing an exception: ${librarySource.fullName}"), null);
+ }
+ DartEntryImpl dartCopy = (sourceEntry as DartEntry).writableCopy;
+ dartCopy.recordHintErrorInLibrary(librarySource, thrownException);
+ _cache.put(librarySource, dartCopy);
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ for (MapEntry<Source, TimestampedData<List<AnalysisError>>> entry in getMapEntrySet(hintMap)) {
+ Source unitSource = entry.getKey();
+ TimestampedData<List<AnalysisError>> results = entry.getValue();
+ SourceEntry sourceEntry = _cache.get(unitSource);
+ if (sourceEntry is! DartEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to parse non-Dart file as a Dart file: ${unitSource.fullName}");
+ }
+ DartEntry dartEntry = sourceEntry as DartEntry;
+ if (unitSource == librarySource) {
+ libraryEntry = dartEntry;
+ }
+ int sourceTime = getModificationStamp(unitSource);
+ int resultTime = results.modificationTime;
+ if (sourceTime == resultTime) {
+ if (dartEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(unitSource);
+ dartEntry = _getReadableDartEntry(unitSource);
+ if (dartEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${unitSource.fullName}");
+ }
+ }
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null) {
+ dartCopy.setValueInLibrary(DartEntry.HINTS, librarySource, results.data);
+ ChangeNoticeImpl notice = _getNotice(unitSource);
+ notice.setErrors(dartCopy.allErrors, dartCopy.getValue(SourceEntry.LINE_INFO));
+ } else {
+ dartCopy.recordHintErrorInLibrary(librarySource, thrownException);
+ }
+ _cache.put(unitSource, dartCopy);
+ dartEntry = dartCopy;
+ } else {
+ _logInformation2("Generated hints discarded for ${_debuggingString(unitSource)}; sourceTime = ${sourceTime}, resultTime = ${resultTime}, cacheTime = ${dartEntry.modificationTime}", thrownException);
+ if (dartEntry.getStateInLibrary(DartEntry.HINTS, librarySource) == CacheState.IN_PROCESS) {
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // dartCopy.setState(DartEntry.HINTS, librarySource, CacheState.INVALID);
+ _removeFromParts(unitSource, dartEntry);
+ dartCopy.invalidateAllInformation();
+ dartCopy.modificationTime = sourceTime;
+ _cache.removedAst(unitSource);
+ _workManager.add(unitSource, SourcePriority.UNKNOWN);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ dartCopy.recordHintErrorInLibrary(librarySource, thrownException);
+ }
+ _cache.put(unitSource, dartCopy);
+ dartEntry = dartCopy;
+ }
+ }
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return libraryEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [GetContentTask].
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ SourceEntry _recordGetContentsTask(GetContentTask task) {
+ if (!task.isComplete) {
+ return null;
+ }
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ SourceEntry sourceEntry = null;
+ sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ }
+ SourceEntryImpl sourceCopy = sourceEntry.writableCopy;
+ if (thrownException == null) {
+ sourceCopy.modificationTime = task.modificationTime;
+ sourceCopy.setValue(SourceEntry.CONTENT, task.content);
+ } else {
+ sourceCopy.recordContentError(thrownException);
+ _workManager.remove(source);
+ }
+ _cache.put(source, sourceCopy);
+ sourceEntry = sourceCopy;
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return sourceEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [IncrementalAnalysisTask].
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ DartEntry _recordIncrementalAnalysisTaskResults(IncrementalAnalysisTask task) {
+ CompilationUnit unit = task.compilationUnit;
+ if (unit != null) {
+ ChangeNoticeImpl notice = _getNotice(task.source);
+ notice.compilationUnit = unit;
+ _incrementalAnalysisCache = IncrementalAnalysisCache.cacheResult(task.cache, unit);
+ }
+ return null;
+ }
+
+ /**
+ * Record the results produced by performing a [ParseDartTask]. If the results were computed
+ * from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ DartEntry _recordParseDartTaskResults(ParseDartTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ DartEntry dartEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! DartEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to parse non-Dart file as a Dart file: ${source.fullName}");
+ }
+ dartEntry = sourceEntry as DartEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (dartEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${source.fullName}");
+ }
+ }
+ _removeFromParts(source, dartEntry);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null) {
+ if (task.hasNonPartOfDirective) {
+ dartCopy.setValue(DartEntry.SOURCE_KIND, SourceKind.LIBRARY);
+ dartCopy.containingLibrary = source;
+ _workManager.add(source, SourcePriority.LIBRARY);
+ } else if (task.hasPartOfDirective) {
+ dartCopy.setValue(DartEntry.SOURCE_KIND, SourceKind.PART);
+ dartCopy.removeContainingLibrary(source);
+ _workManager.add(source, SourcePriority.NORMAL_PART);
+ } else {
+ // The file contains no directives.
+ List<Source> containingLibraries = dartCopy.containingLibraries;
+ if (containingLibraries.length > 1 || (containingLibraries.length == 1 && containingLibraries[0] != source)) {
+ dartCopy.setValue(DartEntry.SOURCE_KIND, SourceKind.PART);
+ dartCopy.removeContainingLibrary(source);
+ _workManager.add(source, SourcePriority.NORMAL_PART);
+ } else {
+ dartCopy.setValue(DartEntry.SOURCE_KIND, SourceKind.LIBRARY);
+ dartCopy.containingLibrary = source;
+ _workManager.add(source, SourcePriority.LIBRARY);
+ }
+ }
+ List<Source> newParts = task.includedSources;
+ for (int i = 0; i < newParts.length; i++) {
+ Source partSource = newParts[i];
+ DartEntry partEntry = _getReadableDartEntry(partSource);
+ if (partEntry != null && !identical(partEntry, dartEntry)) {
+ DartEntryImpl partCopy = partEntry.writableCopy;
+ // TODO(brianwilkerson) Change the kind of the "part" if it was marked as a library
+ // and it has no directives.
+ partCopy.addContainingLibrary(source);
+ _cache.put(partSource, partCopy);
+ }
+ }
+ dartCopy.setValue(DartEntry.PARSED_UNIT, task.compilationUnit);
+ dartCopy.setValue(DartEntry.PARSE_ERRORS, task.errors);
+ dartCopy.setValue(DartEntry.EXPORTED_LIBRARIES, task.exportedSources);
+ dartCopy.setValue(DartEntry.IMPORTED_LIBRARIES, task.importedSources);
+ dartCopy.setValue(DartEntry.INCLUDED_PARTS, newParts);
+ _cache.storedAst(source);
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.setErrors(dartCopy.allErrors, task.lineInfo);
+ // Verify that the incrementally parsed and resolved unit in the incremental cache
+ // is structurally equivalent to the fully parsed unit
+ _incrementalAnalysisCache = IncrementalAnalysisCache.verifyStructure(_incrementalAnalysisCache, source, task.compilationUnit);
+ } else {
+ _removeFromParts(source, dartEntry);
+ dartCopy.recordParseError(thrownException);
+ _cache.removedAst(source);
+ }
+ _cache.put(source, dartCopy);
+ dartEntry = dartCopy;
+ } else {
+ _logInformation2("Parse results discarded for ${_debuggingString(source)}; sourceTime = ${sourceTime}, resultTime = ${resultTime}, cacheTime = ${dartEntry.modificationTime}", thrownException);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // dartCopy.recordParseNotInProcess();
+ _removeFromParts(source, dartEntry);
+ dartCopy.invalidateAllInformation();
+ dartCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ _workManager.add(source, SourcePriority.UNKNOWN);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ dartCopy.recordParseError(thrownException);
+ }
+ _cache.put(source, dartCopy);
+ dartEntry = dartCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [ParseHtmlTask]. If the results were computed
+ * from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ HtmlEntry _recordParseHtmlTaskResults(ParseHtmlTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ HtmlEntry htmlEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! HtmlEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent an HTML file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to parse non-HTML file as a HTML file: ${source.fullName}");
+ }
+ htmlEntry = sourceEntry as HtmlEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (htmlEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ throw new AnalysisException("An HTML file became a non-HTML file: ${source.fullName}");
+ }
+ }
+ HtmlEntryImpl htmlCopy = (sourceEntry as HtmlEntry).writableCopy;
+ if (thrownException == null) {
+ LineInfo lineInfo = task.lineInfo;
+ ht.HtmlUnit unit = task.htmlUnit;
+ htmlCopy.setValue(SourceEntry.LINE_INFO, lineInfo);
+ htmlCopy.setValue(HtmlEntry.PARSED_UNIT, unit);
+ htmlCopy.setValue(HtmlEntry.PARSE_ERRORS, task.errors);
+ htmlCopy.setValue(HtmlEntry.REFERENCED_LIBRARIES, task.referencedLibraries);
+ _cache.storedAst(source);
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.setErrors(htmlCopy.allErrors, lineInfo);
+ } else {
+ htmlCopy.recordParseError(thrownException);
+ _cache.removedAst(source);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ } else {
+ _logInformation2("Parse results discarded for ${_debuggingString(source)}; sourceTime = ${sourceTime}, resultTime = ${resultTime}, cacheTime = ${htmlEntry.modificationTime}", thrownException);
+ HtmlEntryImpl htmlCopy = (sourceEntry as HtmlEntry).writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // if (htmlCopy.getState(SourceEntry.LINE_INFO) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(SourceEntry.LINE_INFO, CacheState.INVALID);
+ // }
+ // if (htmlCopy.getState(HtmlEntry.PARSED_UNIT) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.PARSED_UNIT, CacheState.INVALID);
+ // }
+ // if (htmlCopy.getState(HtmlEntry.REFERENCED_LIBRARIES) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.REFERENCED_LIBRARIES, CacheState.INVALID);
+ // }
+ htmlCopy.invalidateAllInformation();
+ htmlCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ htmlCopy.recordParseError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [PolymerBuildHtmlTask]. If the results were
+ * computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @throws AnalysisException if the results could not be recorded
+ */
+ HtmlEntry _recordPolymerBuildHtmlTaskResults(PolymerBuildHtmlTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ HtmlEntry htmlEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! HtmlEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent an HTML file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-HTML file as an HTML file: ${source.fullName}");
+ }
+ htmlEntry = sourceEntry as HtmlEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (htmlEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ throw new AnalysisException("An HTML file became a non-HTML file: ${source.fullName}");
+ }
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null) {
+ htmlCopy.setValue(HtmlEntry.POLYMER_BUILD_ERRORS, task.errors);
+ // notify about errors
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.setErrors(htmlCopy.allErrors, htmlCopy.getValue(SourceEntry.LINE_INFO));
+ } else {
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ } else {
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ htmlCopy.invalidateAllInformation();
+ htmlCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [PolymerResolveHtmlTask]. If the results were
+ * computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @throws AnalysisException if the results could not be recorded
+ */
+ HtmlEntry _recordPolymerResolveHtmlTaskResults(PolymerResolveHtmlTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ HtmlEntry htmlEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! HtmlEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent an HTML file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-HTML file as an HTML file: ${source.fullName}");
+ }
+ htmlEntry = sourceEntry as HtmlEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (htmlEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ throw new AnalysisException("An HTML file became a non-HTML file: ${source.fullName}");
+ }
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null) {
+ htmlCopy.setValue(HtmlEntry.POLYMER_RESOLUTION_ERRORS, task.errors);
+ // notify about errors
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.setErrors(htmlCopy.allErrors, htmlCopy.getValue(SourceEntry.LINE_INFO));
+ } else {
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ } else {
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ htmlCopy.invalidateAllInformation();
+ htmlCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [ResolveAngularComponentTemplateTask]. If the
+ * results were computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @throws AnalysisException if the results could not be recorded
+ */
+ HtmlEntry _recordResolveAngularComponentTemplateTaskResults(ResolveAngularComponentTemplateTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ HtmlEntry htmlEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! HtmlEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent an HTML file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-HTML file as an HTML file: ${source.fullName}");
+ }
+ htmlEntry = sourceEntry as HtmlEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (htmlEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ throw new AnalysisException("An HTML file became a non-HTML file: ${source.fullName}");
+ }
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null) {
+ htmlCopy.setValue(HtmlEntry.ANGULAR_ERRORS, task.resolutionErrors);
+ // notify about errors
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.htmlUnit = task.resolvedUnit;
+ notice.setErrors(htmlCopy.allErrors, htmlCopy.getValue(SourceEntry.LINE_INFO));
+ } else {
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ } else {
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // if (htmlCopy.getState(HtmlEntry.ANGULAR_ERRORS) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.ANGULAR_ERRORS, CacheState.INVALID);
+ // }
+ // if (htmlCopy.getState(HtmlEntry.ELEMENT) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.ELEMENT, CacheState.INVALID);
+ // }
+ // if (htmlCopy.getState(HtmlEntry.RESOLUTION_ERRORS) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.RESOLUTION_ERRORS, CacheState.INVALID);
+ // }
+ htmlCopy.invalidateAllInformation();
+ htmlCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [ResolveAngularEntryHtmlTask]. If the results
+ * were computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @throws AnalysisException if the results could not be recorded
+ */
+ HtmlEntry _recordResolveAngularEntryHtmlTaskResults(ResolveAngularEntryHtmlTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ HtmlEntry htmlEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! HtmlEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent an HTML file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-HTML file as an HTML file: ${source.fullName}");
+ }
+ htmlEntry = sourceEntry as HtmlEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (htmlEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ throw new AnalysisException("An HTML file became a non-HTML file: ${source.fullName}");
+ }
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null) {
+ htmlCopy.setValue(HtmlEntry.RESOLVED_UNIT, task.resolvedUnit);
+ _recordAngularEntryPoint(htmlCopy, task);
+ _cache.storedAst(source);
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.htmlUnit = task.resolvedUnit;
+ notice.setErrors(htmlCopy.allErrors, htmlCopy.getValue(SourceEntry.LINE_INFO));
+ } else {
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ } else {
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // if (htmlCopy.getState(HtmlEntry.ANGULAR_ERRORS) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.ANGULAR_ERRORS, CacheState.INVALID);
+ // }
+ // if (htmlCopy.getState(HtmlEntry.ELEMENT) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.ELEMENT, CacheState.INVALID);
+ // }
+ // if (htmlCopy.getState(HtmlEntry.RESOLUTION_ERRORS) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.RESOLUTION_ERRORS, CacheState.INVALID);
+ // }
+ htmlCopy.invalidateAllInformation();
+ htmlCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [ResolveDartUnitTask]. If the results were
+ * computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ DartEntry _recordResolveDartUnitTaskResults(ResolveDartUnitTask task) {
+ Source unitSource = task.source;
+ Source librarySource = task.librarySource;
+ CaughtException thrownException = task.exception;
+ DartEntry dartEntry = null;
+ SourceEntry sourceEntry = _cache.get(unitSource);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(unitSource);
+ } else if (sourceEntry is! DartEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-Dart file as a Dart file: ${unitSource.fullName}");
+ }
+ dartEntry = sourceEntry as DartEntry;
+ int sourceTime = getModificationStamp(unitSource);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (dartEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(unitSource);
+ dartEntry = _getReadableDartEntry(unitSource);
+ if (dartEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${unitSource.fullName}");
+ }
+ }
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null) {
+ dartCopy.setValueInLibrary(DartEntry.RESOLVED_UNIT, librarySource, task.resolvedUnit);
+ _cache.storedAst(unitSource);
+ } else {
+ dartCopy.recordResolutionErrorInLibrary(librarySource, thrownException);
+ _cache.removedAst(unitSource);
+ }
+ _cache.put(unitSource, dartCopy);
+ dartEntry = dartCopy;
+ } else {
+ _logInformation2("Resolution results discarded for ${_debuggingString(unitSource)}; sourceTime = ${sourceTime}, resultTime = ${resultTime}, cacheTime = ${dartEntry.modificationTime}", thrownException);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // if (dartCopy.getState(DartEntry.RESOLVED_UNIT) == CacheState.IN_PROCESS) {
+ // dartCopy.setState(DartEntry.RESOLVED_UNIT, librarySource, CacheState.INVALID);
+ // }
+ _removeFromParts(unitSource, dartEntry);
+ dartCopy.invalidateAllInformation();
+ dartCopy.modificationTime = sourceTime;
+ _cache.removedAst(unitSource);
+ _workManager.add(unitSource, SourcePriority.UNKNOWN);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ dartCopy.recordResolutionErrorInLibrary(librarySource, thrownException);
+ }
+ _cache.put(unitSource, dartCopy);
+ dartEntry = dartCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [ResolveHtmlTask]. If the results were
+ * computed from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ HtmlEntry _recordResolveHtmlTaskResults(ResolveHtmlTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ HtmlEntry htmlEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! HtmlEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent an HTML file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to resolve non-HTML file as an HTML file: ${source.fullName}");
+ }
+ htmlEntry = sourceEntry as HtmlEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (htmlEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ htmlEntry = _getReadableHtmlEntry(source);
+ if (htmlEntry == null) {
+ throw new AnalysisException("An HTML file became a non-HTML file: ${source.fullName}");
+ }
+ }
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null) {
+ htmlCopy.setState(HtmlEntry.PARSED_UNIT, CacheState.FLUSHED);
+ htmlCopy.setValue(HtmlEntry.RESOLVED_UNIT, task.resolvedUnit);
+ htmlCopy.setValue(HtmlEntry.ELEMENT, task.element);
+ htmlCopy.setValue(HtmlEntry.RESOLUTION_ERRORS, task.resolutionErrors);
+ _cache.storedAst(source);
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.htmlUnit = task.resolvedUnit;
+ notice.setErrors(htmlCopy.allErrors, htmlCopy.getValue(SourceEntry.LINE_INFO));
+ } else {
+ htmlCopy.recordResolutionError(thrownException);
+ _cache.removedAst(source);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ } else {
+ _logInformation2("Resolution results discarded for ${_debuggingString(source)}; sourceTime = ${sourceTime}, resultTime = ${resultTime}, cacheTime = ${htmlEntry.modificationTime}", thrownException);
+ HtmlEntryImpl htmlCopy = htmlEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // if (htmlCopy.getState(HtmlEntry.ELEMENT) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.ELEMENT, CacheState.INVALID);
+ // }
+ // if (htmlCopy.getState(HtmlEntry.RESOLUTION_ERRORS) == CacheState.IN_PROCESS) {
+ // htmlCopy.setState(HtmlEntry.RESOLUTION_ERRORS, CacheState.INVALID);
+ // }
+ htmlCopy.invalidateAllInformation();
+ htmlCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ htmlCopy.recordResolutionError(thrownException);
+ }
+ _cache.put(source, htmlCopy);
+ htmlEntry = htmlCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return htmlEntry;
+ }
+
+ /**
+ * Record the results produced by performing a [ScanDartTask]. If the results were computed
+ * from data that is now out-of-date, then the results will not be recorded.
+ *
+ * @param task the task that was performed
+ * @return an entry containing the computed results
+ * @throws AnalysisException if the results could not be recorded
+ */
+ DartEntry _recordScanDartTaskResults(ScanDartTask task) {
+ Source source = task.source;
+ CaughtException thrownException = task.exception;
+ DartEntry dartEntry = null;
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ throw new ObsoleteSourceAnalysisException(source);
+ } else if (sourceEntry is! DartEntry) {
+ // This shouldn't be possible because we should never have performed the task if the source
+ // didn't represent a Dart file, but check to be safe.
+ throw new AnalysisException("Internal error: attempting to parse non-Dart file as a Dart file: ${source.fullName}");
+ }
+ dartEntry = sourceEntry as DartEntry;
+ int sourceTime = getModificationStamp(source);
+ int resultTime = task.modificationTime;
+ if (sourceTime == resultTime) {
+ if (dartEntry.modificationTime != sourceTime) {
+ // The source has changed without the context being notified. Simulate notification.
+ _sourceChanged(source);
+ dartEntry = _getReadableDartEntry(source);
+ if (dartEntry == null) {
+ throw new AnalysisException("A Dart file became a non-Dart file: ${source.fullName}");
+ }
+ }
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null) {
+ LineInfo lineInfo = task.lineInfo;
+ dartCopy.setValue(SourceEntry.LINE_INFO, lineInfo);
+ dartCopy.setValue(DartEntry.TOKEN_STREAM, task.tokenStream);
+ dartCopy.setValue(DartEntry.SCAN_ERRORS, task.errors);
+ _cache.storedAst(source);
+ ChangeNoticeImpl notice = _getNotice(source);
+ notice.setErrors(dartEntry.allErrors, lineInfo);
+ } else {
+ _removeFromParts(source, dartEntry);
+ dartCopy.recordScanError(thrownException);
+ _cache.removedAst(source);
+ }
+ _cache.put(source, dartCopy);
+ dartEntry = dartCopy;
+ } else {
+ _logInformation2("Scan results discarded for ${_debuggingString(source)}; sourceTime = ${sourceTime}, resultTime = ${resultTime}, cacheTime = ${dartEntry.modificationTime}", thrownException);
+ DartEntryImpl dartCopy = dartEntry.writableCopy;
+ if (thrownException == null || resultTime >= 0) {
+ //
+ // The analysis was performed on out-of-date sources. Mark the cache so that the sources
+ // will be re-analyzed using the up-to-date sources.
+ //
+ // dartCopy.recordScanNotInProcess();
+ _removeFromParts(source, dartEntry);
+ dartCopy.invalidateAllInformation();
+ dartCopy.modificationTime = sourceTime;
+ _cache.removedAst(source);
+ _workManager.add(source, SourcePriority.UNKNOWN);
+ } else {
+ //
+ // We could not determine whether the sources were up-to-date or out-of-date. Mark the
+ // cache so that we won't attempt to re-analyze the sources until there's a good chance
+ // that we'll be able to do so without error.
+ //
+ dartCopy.recordScanError(thrownException);
+ }
+ _cache.put(source, dartCopy);
+ dartEntry = dartCopy;
+ }
+ if (thrownException != null) {
+ throw new AnalysisException('<rethrow>', thrownException);
+ }
+ return dartEntry;
+ }
+
+ /**
+ * Remove the given library from the list of containing libraries for all of the parts referenced
+ * by the given entry.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param librarySource the library to be removed
+ * @param dartEntry the entry containing the list of included parts
+ */
+ void _removeFromParts(Source librarySource, DartEntry dartEntry) {
+ List<Source> oldParts = dartEntry.getValue(DartEntry.INCLUDED_PARTS);
+ for (int i = 0; i < oldParts.length; i++) {
+ Source partSource = oldParts[i];
+ DartEntry partEntry = _getReadableDartEntry(partSource);
+ if (partEntry != null && !identical(partEntry, dartEntry)) {
+ DartEntryImpl partCopy = partEntry.writableCopy;
+ partCopy.removeContainingLibrary(librarySource);
+ if (partCopy.containingLibraries.length == 0 && !exists(partSource)) {
+ _cache.remove(partSource);
+ } else {
+ _cache.put(partSource, partCopy);
+ }
+ }
+ }
+ }
+
+ /**
+ * Remove the given libraries that are keys in the given map from the list of containing libraries
+ * for each of the parts in the corresponding value.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param oldPartMap the table containing the parts associated with each library
+ */
+ void _removeFromPartsUsingMap(HashMap<Source, List<Source>> oldPartMap) {
+ for (MapEntry<Source, List<Source>> entry in getMapEntrySet(oldPartMap)) {
+ Source librarySource = entry.getKey();
+ List<Source> oldParts = entry.getValue();
+ for (int i = 0; i < oldParts.length; i++) {
+ Source partSource = oldParts[i];
+ if (partSource != librarySource) {
+ DartEntry partEntry = _getReadableDartEntry(partSource);
+ if (partEntry != null) {
+ DartEntryImpl partCopy = partEntry.writableCopy;
+ partCopy.removeContainingLibrary(librarySource);
+ if (partCopy.containingLibraries.length == 0 && !exists(partSource)) {
+ _cache.remove(partSource);
+ } else {
+ _cache.put(partSource, partCopy);
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * Remove the given source from the priority order if it is in the list.
+ *
+ * @param source the source to be removed
+ */
+ void _removeFromPriorityOrder(Source source) {
+ int count = _priorityOrder.length;
+ List<Source> newOrder = new List<Source>();
+ for (int i = 0; i < count; i++) {
+ if (_priorityOrder[i] != source) {
+ newOrder.add(_priorityOrder[i]);
+ }
+ }
+ if (newOrder.length < count) {
+ analysisPriorityOrder = newOrder;
+ }
+ }
+
+ /**
+ * Create an entry for the newly added source. Return `true` if the new source is a Dart
+ * file.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param source the source that has been added
+ * @return `true` if the new source is a Dart file
+ */
+ bool _sourceAvailable(Source source) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null) {
+ sourceEntry = _createSourceEntry(source, true);
+ } else {
+ _sourceChanged(source);
+ sourceEntry = _cache.get(source);
+ }
+ if (sourceEntry is HtmlEntry) {
+ _workManager.add(source, SourcePriority.HTML);
+ } else if (sourceEntry is DartEntry) {
+ _workManager.add(source, _computePriority(sourceEntry as DartEntry));
+ }
+ return sourceEntry is DartEntry;
+ }
+
+ /**
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param source the source that has been changed
+ */
+ void _sourceChanged(Source source) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry == null || sourceEntry.modificationTime == getModificationStamp(source)) {
+ // Either we have removed this source, in which case we don't care that it is changed, or we
+ // have already invalidated the cache and don't need to invalidate it again.
+ return;
+ }
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntryImpl htmlCopy = sourceEntry.writableCopy;
+ htmlCopy.modificationTime = getModificationStamp(source);
+ _invalidateAngularResolution(htmlCopy);
+ htmlCopy.invalidateAllInformation();
+ _cache.put(source, htmlCopy);
+ _cache.removedAst(source);
+ _workManager.add(source, SourcePriority.HTML);
+ } else if (sourceEntry is DartEntry) {
+ List<Source> containingLibraries = getLibrariesContaining(source);
+ HashSet<Source> librariesToInvalidate = new HashSet<Source>();
+ for (Source containingLibrary in containingLibraries) {
+ _computeAllLibrariesDependingOn(containingLibrary, librariesToInvalidate);
+ }
+ for (Source library in librariesToInvalidate) {
+ _invalidateLibraryResolution(library);
+ }
+ _removeFromParts(source, _cache.get(source) as DartEntry);
+ DartEntryImpl dartCopy = (_cache.get(source) as DartEntry).writableCopy;
+ dartCopy.modificationTime = getModificationStamp(source);
+ dartCopy.invalidateAllInformation();
+ _cache.put(source, dartCopy);
+ _cache.removedAst(source);
+ _workManager.add(source, SourcePriority.UNKNOWN);
+ }
+ }
+
+ /**
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param source the source that has been deleted
+ */
+ void _sourceDeleted(Source source) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntryImpl htmlCopy = sourceEntry.writableCopy;
+ _invalidateAngularResolution(htmlCopy);
+ htmlCopy.recordContentError(new CaughtException(new AnalysisException("This source was marked as being deleted"), null));
+ _cache.put(source, htmlCopy);
+ } else if (sourceEntry is DartEntry) {
+ HashSet<Source> libraries = new HashSet<Source>();
+ for (Source librarySource in getLibrariesContaining(source)) {
+ libraries.add(librarySource);
+ for (Source dependentLibrary in getLibrariesDependingOn(librarySource)) {
+ libraries.add(dependentLibrary);
+ }
+ }
+ for (Source librarySource in libraries) {
+ _invalidateLibraryResolution(librarySource);
+ }
+ DartEntryImpl dartCopy = sourceEntry.writableCopy;
+ dartCopy.recordContentError(new CaughtException(new AnalysisException("This source was marked as being deleted"), null));
+ _cache.put(source, dartCopy);
+ }
+ _workManager.remove(source);
+ _removeFromPriorityOrder(source);
+ }
+
+ /**
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @param source the source that has been removed
+ */
+ void _sourceRemoved(Source source) {
+ SourceEntry sourceEntry = _cache.get(source);
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntryImpl htmlCopy = sourceEntry.writableCopy;
+ _invalidateAngularResolution(htmlCopy);
+ } else if (sourceEntry is DartEntry) {
+ HashSet<Source> libraries = new HashSet<Source>();
+ for (Source librarySource in getLibrariesContaining(source)) {
+ libraries.add(librarySource);
+ for (Source dependentLibrary in getLibrariesDependingOn(librarySource)) {
+ libraries.add(dependentLibrary);
+ }
+ }
+ for (Source librarySource in libraries) {
+ _invalidateLibraryResolution(librarySource);
+ }
+ }
+ _cache.remove(source);
+ _workManager.remove(source);
+ _removeFromPriorityOrder(source);
+ }
+
+ /**
+ * Check the cache for any invalid entries (entries whose modification time does not match the
+ * modification time of the source associated with the entry). Invalid entries will be marked as
+ * invalid so that the source will be re-analyzed.
+ *
+ * <b>Note:</b> This method must only be invoked while we are synchronized on [cacheLock].
+ *
+ * @return `true` if at least one entry was invalid
+ */
+ bool _validateCacheConsistency() {
+ int consistencyCheckStart = JavaSystem.nanoTime();
+ List<Source> changedSources = new List<Source>();
+ List<Source> missingSources = new List<Source>();
+ MapIterator<Source, SourceEntry> iterator = _cache.iterator();
+ while (iterator.moveNext()) {
+ Source source = iterator.key;
+ SourceEntry sourceEntry = iterator.value;
+ int sourceTime = getModificationStamp(source);
+ if (sourceTime != sourceEntry.modificationTime) {
+ changedSources.add(source);
+ }
+ if (sourceEntry.exception != null) {
+ if (!exists(source)) {
+ missingSources.add(source);
+ }
+ }
+ }
+ int count = changedSources.length;
+ for (int i = 0; i < count; i++) {
+ _sourceChanged(changedSources[i]);
+ }
+ int consistencyCheckEnd = JavaSystem.nanoTime();
+ if (changedSources.length > 0 || missingSources.length > 0) {
+ PrintStringWriter writer = new PrintStringWriter();
+ writer.print("Consistency check took ");
+ writer.print((consistencyCheckEnd - consistencyCheckStart) / 1000000.0);
+ writer.println(" ms and found");
+ writer.print(" ");
+ writer.print(changedSources.length);
+ writer.println(" inconsistent entries");
+ writer.print(" ");
+ writer.print(missingSources.length);
+ writer.println(" missing sources");
+ for (Source source in missingSources) {
+ writer.print(" ");
+ writer.println(source.fullName);
+ }
+ _logInformation(writer.toString());
+ }
+ return changedSources.length > 0;
+ }
+}
+
+/**
+ * Instances of the class `AnalysisTaskResultRecorder` are used by an analysis context to
+ * record the results of a task.
+ */
+class AnalysisContextImpl_AnalysisTaskResultRecorder implements AnalysisTaskVisitor<SourceEntry> {
+ final AnalysisContextImpl AnalysisContextImpl_this;
+
+ AnalysisContextImpl_AnalysisTaskResultRecorder(this.AnalysisContextImpl_this);
+
+ @override
+ DartEntry visitGenerateDartErrorsTask(GenerateDartErrorsTask task) => AnalysisContextImpl_this._recordGenerateDartErrorsTask(task);
+
+ @override
+ DartEntry visitGenerateDartHintsTask(GenerateDartHintsTask task) => AnalysisContextImpl_this._recordGenerateDartHintsTask(task);
+
+ @override
+ SourceEntry visitGetContentTask(GetContentTask task) => AnalysisContextImpl_this._recordGetContentsTask(task);
+
+ @override
+ DartEntry visitIncrementalAnalysisTask(IncrementalAnalysisTask task) => AnalysisContextImpl_this._recordIncrementalAnalysisTaskResults(task);
+
+ @override
+ DartEntry visitParseDartTask(ParseDartTask task) => AnalysisContextImpl_this._recordParseDartTaskResults(task);
+
+ @override
+ HtmlEntry visitParseHtmlTask(ParseHtmlTask task) => AnalysisContextImpl_this._recordParseHtmlTaskResults(task);
+
+ @override
+ HtmlEntry visitPolymerBuildHtmlTask(PolymerBuildHtmlTask task) => AnalysisContextImpl_this._recordPolymerBuildHtmlTaskResults(task);
+
+ @override
+ HtmlEntry visitPolymerResolveHtmlTask(PolymerResolveHtmlTask task) => AnalysisContextImpl_this._recordPolymerResolveHtmlTaskResults(task);
+
+ @override
+ HtmlEntry visitResolveAngularComponentTemplateTask(ResolveAngularComponentTemplateTask task) => AnalysisContextImpl_this._recordResolveAngularComponentTemplateTaskResults(task);
+
+ @override
+ HtmlEntry visitResolveAngularEntryHtmlTask(ResolveAngularEntryHtmlTask task) => AnalysisContextImpl_this._recordResolveAngularEntryHtmlTaskResults(task);
+
+ @override
+ DartEntry visitResolveDartLibraryCycleTask(ResolveDartLibraryCycleTask task) => AnalysisContextImpl_this.recordResolveDartLibraryCycleTaskResults(task);
+
+ @override
+ DartEntry visitResolveDartLibraryTask(ResolveDartLibraryTask task) => AnalysisContextImpl_this.recordResolveDartLibraryTaskResults(task);
+
+ @override
+ DartEntry visitResolveDartUnitTask(ResolveDartUnitTask task) => AnalysisContextImpl_this._recordResolveDartUnitTaskResults(task);
+
+ @override
+ HtmlEntry visitResolveHtmlTask(ResolveHtmlTask task) => AnalysisContextImpl_this._recordResolveHtmlTaskResults(task);
+
+ @override
+ DartEntry visitScanDartTask(ScanDartTask task) => AnalysisContextImpl_this._recordScanDartTaskResults(task);
+}
+
+class AnalysisContextImpl_ContextRetentionPolicy implements CacheRetentionPolicy {
+ final AnalysisContextImpl AnalysisContextImpl_this;
+
+ AnalysisContextImpl_ContextRetentionPolicy(this.AnalysisContextImpl_this);
+
+ @override
+ RetentionPriority getAstPriority(Source source, SourceEntry sourceEntry) {
+ int priorityCount = AnalysisContextImpl_this._priorityOrder.length;
+ for (int i = 0; i < priorityCount; i++) {
+ if (source == AnalysisContextImpl_this._priorityOrder[i]) {
+ return RetentionPriority.HIGH;
+ }
+ }
+ if (AnalysisContextImpl_this._neededForResolution != null && AnalysisContextImpl_this._neededForResolution.contains(source)) {
+ return RetentionPriority.HIGH;
+ }
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ if (_astIsNeeded(dartEntry)) {
+ return RetentionPriority.MEDIUM;
+ }
+ }
+ return RetentionPriority.LOW;
+ }
+
+ bool _astIsNeeded(DartEntry dartEntry) => dartEntry.hasInvalidData(DartEntry.HINTS) || dartEntry.hasInvalidData(DartEntry.VERIFICATION_ERRORS) || dartEntry.hasInvalidData(DartEntry.RESOLUTION_ERRORS);
+}
+
+/**
+ * Instances of the class `CycleBuilder` are used to construct a list of the libraries that
+ * must be resolved together in order to resolve any one of the libraries.
+ */
+class AnalysisContextImpl_CycleBuilder {
+ final AnalysisContextImpl AnalysisContextImpl_this;
+
+ /**
+ * A table mapping the sources of the defining compilation units of libraries to the
+ * representation of the library that has the information needed to resolve the library.
+ */
+ HashMap<Source, ResolvableLibrary> _libraryMap = new HashMap<Source, ResolvableLibrary>();
+
+ /**
+ * The dependency graph used to compute the libraries in the cycle.
+ */
+ DirectedGraph<ResolvableLibrary> _dependencyGraph;
+
+ /**
+ * A list containing the libraries that are ready to be resolved.
+ */
+ List<ResolvableLibrary> _librariesInCycle;
+
+ /**
+ * The analysis task that needs to be performed before the cycle of libraries can be resolved,
+ * or `null` if the libraries are ready to be resolved.
+ */
+ AnalysisContextImpl_TaskData _taskData;
+
+ /**
+ * Initialize a newly created cycle builder.
+ */
+ AnalysisContextImpl_CycleBuilder(this.AnalysisContextImpl_this) : super();
+
+ /**
+ * Compute a list of the libraries that need to be resolved together in order to resolve the
+ * given library.
+ *
+ * @param librarySource the source of the library to be resolved
+ * @throws AnalysisException if the core library cannot be found
+ */
+ void computeCycleContaining(Source librarySource) {
+ //
+ // Create the object representing the library being resolved.
+ //
+ ResolvableLibrary targetLibrary = _createLibrary(librarySource);
+ //
+ // Compute the set of libraries that need to be resolved together.
+ //
+ _dependencyGraph = new DirectedGraph<ResolvableLibrary>();
+ _computeLibraryDependencies(targetLibrary);
+ if (_taskData != null) {
+ return;
+ }
+ _librariesInCycle = _dependencyGraph.findCycleContaining(targetLibrary);
+ //
+ // Ensure that all of the data needed to resolve them has been computed.
+ //
+ _ensureImportsAndExports();
+ if (_taskData != null) {
+ // At least one imported library needs to be resolved before the target library.
+ AnalysisTask task = _taskData.task;
+ if (task is ResolveDartLibraryTask) {
+ AnalysisContextImpl_this._workManager.addFirst(task.librarySource, SourcePriority.LIBRARY);
+ }
+ return;
+ }
+ _computePartsInCycle(librarySource);
+ if (_taskData != null) {
+ // At least one part needs to be parsed.
+ return;
+ }
+ // All of the AST's necessary to perform a resolution of the library cycle have been
+ // gathered, so it is no longer necessary to retain them in the cache.
+ AnalysisContextImpl_this._neededForResolution = null;
+ }
+
+ /**
+ * Return a list containing the libraries that are ready to be resolved (assuming that
+ * [getTaskData] returns `null`).
+ *
+ * @return the libraries that are ready to be resolved
+ */
+ List<ResolvableLibrary> get librariesInCycle => _librariesInCycle;
+
+ /**
+ * Return a representation of an analysis task that needs to be performed before the cycle of
+ * libraries can be resolved, or `null` if the libraries are ready to be resolved.
+ *
+ * @return the analysis task that needs to be performed before the cycle of libraries can be
+ * resolved
+ */
+ AnalysisContextImpl_TaskData get taskData => _taskData;
+
+ /**
+ * Recursively traverse the libraries reachable from the given library, creating instances of
+ * the class [Library] to represent them, and record the references in the library
+ * objects.
+ *
+ * @param library the library to be processed to find libraries that have not yet been traversed
+ * @throws AnalysisException if some portion of the library graph could not be traversed
+ */
+ void _computeLibraryDependencies(ResolvableLibrary library) {
+ Source librarySource = library.librarySource;
+ DartEntry dartEntry = AnalysisContextImpl_this._getReadableDartEntry(librarySource);
+ List<Source> importedSources = _getSources(librarySource, dartEntry, DartEntry.IMPORTED_LIBRARIES);
+ if (_taskData != null) {
+ return;
+ }
+ List<Source> exportedSources = _getSources(librarySource, dartEntry, DartEntry.EXPORTED_LIBRARIES);
+ if (_taskData != null) {
+ return;
+ }
+ _computeLibraryDependenciesFromDirectives(library, importedSources, exportedSources);
+ }
+
+ /**
+ * Recursively traverse the libraries reachable from the given library, creating instances of
+ * the class [Library] to represent them, and record the references in the library
+ * objects.
+ *
+ * @param library the library to be processed to find libraries that have not yet been traversed
+ * @param importedSources an array containing the sources that are imported into the given
+ * library
+ * @param exportedSources an array containing the sources that are exported from the given
+ * library
+ */
+ void _computeLibraryDependenciesFromDirectives(ResolvableLibrary library, List<Source> importedSources, List<Source> exportedSources) {
+ int importCount = importedSources.length;
+ if (importCount > 0) {
+ List<ResolvableLibrary> importedLibraries = new List<ResolvableLibrary>();
+ bool explicitlyImportsCore = false;
+ for (int i = 0; i < importCount; i++) {
+ Source importedSource = importedSources[i];
+ if (importedSource == AnalysisContextImpl_this._coreLibrarySource) {
+ explicitlyImportsCore = true;
+ }
+ ResolvableLibrary importedLibrary = _libraryMap[importedSource];
+ if (importedLibrary == null) {
+ importedLibrary = _createLibraryOrNull(importedSource);
+ if (importedLibrary != null) {
+ _computeLibraryDependencies(importedLibrary);
+ if (_taskData != null) {
+ return;
+ }
+ }
+ }
+ if (importedLibrary != null) {
+ importedLibraries.add(importedLibrary);
+ _dependencyGraph.addEdge(library, importedLibrary);
+ }
+ }
+ library.explicitlyImportsCore = explicitlyImportsCore;
+ if (!explicitlyImportsCore && AnalysisContextImpl_this._coreLibrarySource != library.librarySource) {
+ ResolvableLibrary importedLibrary = _libraryMap[AnalysisContextImpl_this._coreLibrarySource];
+ if (importedLibrary == null) {
+ importedLibrary = _createLibraryOrNull(AnalysisContextImpl_this._coreLibrarySource);
+ if (importedLibrary != null) {
+ _computeLibraryDependencies(importedLibrary);
+ if (_taskData != null) {
+ return;
+ }
+ }
+ }
+ if (importedLibrary != null) {
+ importedLibraries.add(importedLibrary);
+ _dependencyGraph.addEdge(library, importedLibrary);
+ }
+ }
+ library.importedLibraries = new List.from(importedLibraries);
+ } else {
+ library.explicitlyImportsCore = false;
+ ResolvableLibrary importedLibrary = _libraryMap[AnalysisContextImpl_this._coreLibrarySource];
+ if (importedLibrary == null) {
+ importedLibrary = _createLibraryOrNull(AnalysisContextImpl_this._coreLibrarySource);
+ if (importedLibrary != null) {
+ _computeLibraryDependencies(importedLibrary);
+ if (_taskData != null) {
+ return;
+ }
+ }
+ }
+ if (importedLibrary != null) {
+ _dependencyGraph.addEdge(library, importedLibrary);
+ library.importedLibraries = <ResolvableLibrary> [importedLibrary];
+ }
+ }
+ int exportCount = exportedSources.length;
+ if (exportCount > 0) {
+ List<ResolvableLibrary> exportedLibraries = new List<ResolvableLibrary>();
+ for (int i = 0; i < exportCount; i++) {
+ Source exportedSource = exportedSources[i];
+ ResolvableLibrary exportedLibrary = _libraryMap[exportedSource];
+ if (exportedLibrary == null) {
+ exportedLibrary = _createLibraryOrNull(exportedSource);
+ if (exportedLibrary != null) {
+ _computeLibraryDependencies(exportedLibrary);
+ if (_taskData != null) {
+ return;
+ }
+ }
+ }
+ if (exportedLibrary != null) {
+ exportedLibraries.add(exportedLibrary);
+ _dependencyGraph.addEdge(library, exportedLibrary);
+ }
+ }
+ library.exportedLibraries = new List.from(exportedLibraries);
+ }
+ }
+
+ /**
+ * Gather the resolvable AST structures for each of the compilation units in each of the
+ * libraries in the cycle. This is done in two phases: first we ensure that we have cached an
+ * AST structure for each compilation unit, then we gather them. We split the work this way
+ * because getting the AST structures can change the state of the cache in such a way that we
+ * would have more work to do if any compilation unit didn't have a resolvable AST structure.
+ */
+ void _computePartsInCycle(Source librarySource) {
+ int count = _librariesInCycle.length;
+ List<CycleBuilder_LibraryPair> libraryData = new List<CycleBuilder_LibraryPair>();
+ for (int i = 0; i < count; i++) {
+ ResolvableLibrary library = _librariesInCycle[i];
+ libraryData.add(new CycleBuilder_LibraryPair(library, _ensurePartsInLibrary(library)));
+ }
+ AnalysisContextImpl_this._neededForResolution = _gatherSources(libraryData);
+ if (AnalysisContextImpl._TRACE_PERFORM_TASK) {
+ print(" preserve resolution data for ${AnalysisContextImpl_this._neededForResolution.length} sources while resolving ${librarySource.fullName}");
+ }
+ if (_taskData != null) {
+ return;
+ }
+ for (int i = 0; i < count; i++) {
+ _computePartsInLibrary(libraryData[i]);
+ }
+ }
+
+ /**
+ * Gather the resolvable compilation units for each of the compilation units in the specified
+ * library.
+ *
+ * @param libraryPair a holder containing both the library and a list of (source, entry) pairs
+ * for all of the compilation units in the library
+ */
+ void _computePartsInLibrary(CycleBuilder_LibraryPair libraryPair) {
+ ResolvableLibrary library = libraryPair.library;
+ List<CycleBuilder_SourceEntryPair> entryPairs = libraryPair.entryPairs;
+ int count = entryPairs.length;
+ List<ResolvableCompilationUnit> units = new List<ResolvableCompilationUnit>(count);
+ for (int i = 0; i < count; i++) {
+ CycleBuilder_SourceEntryPair entryPair = entryPairs[i];
+ Source source = entryPair.source;
+ DartEntryImpl dartCopy = entryPair.entry.writableCopy;
+ units[i] = new ResolvableCompilationUnit.con2(dartCopy.modificationTime, dartCopy.resolvableCompilationUnit, source);
+ AnalysisContextImpl_this._cache.put(source, dartCopy);
+ }
+ library.resolvableCompilationUnits = units;
+ }
+
+ /**
+ * Create an object to represent the information about the library defined by the compilation
+ * unit with the given source.
+ *
+ * @param librarySource the source of the library's defining compilation unit
+ * @return the library object that was created
+ */
+ ResolvableLibrary _createLibrary(Source librarySource) {
+ ResolvableLibrary library = new ResolvableLibrary(librarySource);
+ SourceEntry sourceEntry = AnalysisContextImpl_this._cache.get(librarySource);
+ if (sourceEntry is DartEntry) {
+ LibraryElementImpl libraryElement = sourceEntry.getValue(DartEntry.ELEMENT) as LibraryElementImpl;
+ if (libraryElement != null) {
+ library.libraryElement = libraryElement;
+ }
+ }
+ _libraryMap[librarySource] = library;
+ return library;
+ }
+
+ /**
+ * Create an object to represent the information about the library defined by the compilation
+ * unit with the given source.
+ *
+ * @param librarySource the source of the library's defining compilation unit
+ * @return the library object that was created
+ */
+ ResolvableLibrary _createLibraryOrNull(Source librarySource) {
+ ResolvableLibrary library = new ResolvableLibrary(librarySource);
+ SourceEntry sourceEntry = AnalysisContextImpl_this._cache.get(librarySource);
+ if (sourceEntry is DartEntry) {
+ LibraryElementImpl libraryElement = sourceEntry.getValue(DartEntry.ELEMENT) as LibraryElementImpl;
+ if (libraryElement != null) {
+ library.libraryElement = libraryElement;
+ }
+ }
+ _libraryMap[librarySource] = library;
+ return library;
+ }
+
+ /**
+ * Ensure that the given library has an element model built for it. If another task needs to be
+ * executed first in order to build the element model, that task is placed in [taskData].
+ *
+ * @param library the library which needs an element model.
+ */
+ void _ensureElementModel(ResolvableLibrary library) {
+ Source librarySource = library.librarySource;
+ DartEntry libraryEntry = AnalysisContextImpl_this._getReadableDartEntry(librarySource);
+ if (libraryEntry != null && libraryEntry.getState(DartEntry.PARSED_UNIT) != CacheState.ERROR) {
+ AnalysisContextImpl_this._workManager.addFirst(librarySource, SourcePriority.LIBRARY);
+ if (_taskData == null) {
+ _taskData = AnalysisContextImpl_this._createResolveDartLibraryTask(librarySource, libraryEntry);
+ }
+ }
+ }
+
+ /**
+ * Ensure that all of the libraries that are exported by the given library (but are not
+ * themselves in the cycle) have element models built for them. If another task needs to be
+ * executed first in order to build the element model, that task is placed in [taskData].
+ *
+ * @param library the library being tested
+ */
+ void _ensureExports(ResolvableLibrary library, HashSet<Source> visitedLibraries) {
+ List<ResolvableLibrary> dependencies = library.exports;
+ int dependencyCount = dependencies.length;
+ for (int i = 0; i < dependencyCount; i++) {
+ ResolvableLibrary dependency = dependencies[i];
+ if (!_librariesInCycle.contains(dependency) && visitedLibraries.add(dependency.librarySource)) {
+ if (dependency.libraryElement == null) {
+ _ensureElementModel(dependency);
+ } else {
+ _ensureExports(dependency, visitedLibraries);
+ }
+ if (_taskData != null) {
+ return;
+ }
+ }
+ }
+ }
+
+ /**
+ * Ensure that all of the libraries that are exported by the given library (but are not
+ * themselves in the cycle) have element models built for them. If another task needs to be
+ * executed first in order to build the element model, that task is placed in [taskData].
+ *
+ * @param library the library being tested
+ */
+ void _ensureImports(ResolvableLibrary library) {
+ List<ResolvableLibrary> dependencies = library.imports;
+ int dependencyCount = dependencies.length;
+ for (int i = 0; i < dependencyCount; i++) {
+ ResolvableLibrary dependency = dependencies[i];
+ if (!_librariesInCycle.contains(dependency) && dependency.libraryElement == null) {
+ _ensureElementModel(dependency);
+ if (_taskData != null) {
+ return;
+ }
+ }
+ }
+ }
+
+ /**
+ * Ensure that all of the libraries that are either imported or exported by libraries in the
+ * cycle (but are not themselves in the cycle) have element models built for them.
+ */
+ void _ensureImportsAndExports() {
+ HashSet<Source> visitedLibraries = new HashSet<Source>();
+ int libraryCount = _librariesInCycle.length;
+ for (int i = 0; i < libraryCount; i++) {
+ ResolvableLibrary library = _librariesInCycle[i];
+ _ensureImports(library);
+ if (_taskData != null) {
+ return;
+ }
+ _ensureExports(library, visitedLibraries);
+ if (_taskData != null) {
+ return;
+ }
+ }
+ }
+
+ /**
+ * Ensure that there is a resolvable compilation unit available for all of the compilation units
+ * in the given library.
+ *
+ * @param library the library for which resolvable compilation units must be available
+ * @return a list of (source, entry) pairs for all of the compilation units in the library
+ */
+ List<CycleBuilder_SourceEntryPair> _ensurePartsInLibrary(ResolvableLibrary library) {
+ List<CycleBuilder_SourceEntryPair> pairs = new List<CycleBuilder_SourceEntryPair>();
+ Source librarySource = library.librarySource;
+ DartEntry libraryEntry = AnalysisContextImpl_this._getReadableDartEntry(librarySource);
+ if (libraryEntry == null) {
+ throw new AnalysisException("Cannot find entry for ${librarySource.fullName}");
+ } else if (libraryEntry.getState(DartEntry.PARSED_UNIT) == CacheState.ERROR) {
+ String message = "Cannot compute parsed unit for ${librarySource.fullName}";
+ CaughtException exception = libraryEntry.exception;
+ if (exception == null) {
+ throw new AnalysisException(message);
+ }
+ throw new AnalysisException(message, new CaughtException(exception, null));
+ }
+ _ensureResolvableCompilationUnit(librarySource, libraryEntry);
+ pairs.add(new CycleBuilder_SourceEntryPair(librarySource, libraryEntry));
+ List<Source> partSources = _getSources(librarySource, libraryEntry, DartEntry.INCLUDED_PARTS);
+ int count = partSources.length;
+ for (int i = 0; i < count; i++) {
+ Source partSource = partSources[i];
+ DartEntry partEntry = AnalysisContextImpl_this._getReadableDartEntry(partSource);
+ if (partEntry != null && partEntry.getState(DartEntry.PARSED_UNIT) != CacheState.ERROR) {
+ _ensureResolvableCompilationUnit(partSource, partEntry);
+ pairs.add(new CycleBuilder_SourceEntryPair(partSource, partEntry));
+ }
+ }
+ return pairs;
+ }
+
+ /**
+ * Ensure that there is a resolvable compilation unit available for the given source.
+ *
+ * @param source the source for which a resolvable compilation unit must be available
+ * @param dartEntry the entry associated with the source
+ */
+ void _ensureResolvableCompilationUnit(Source source, DartEntry dartEntry) {
+ // The entry will be null if the source represents a non-Dart file.
+ if (dartEntry != null && !dartEntry.hasResolvableCompilationUnit) {
+ if (_taskData == null) {
+ _taskData = AnalysisContextImpl_this._createParseDartTask(source, dartEntry);
+ }
+ }
+ }
+
+ HashSet<Source> _gatherSources(List<CycleBuilder_LibraryPair> libraryData) {
+ int libraryCount = libraryData.length;
+ HashSet<Source> sources = new HashSet<Source>();
+ for (int i = 0; i < libraryCount; i++) {
+ List<CycleBuilder_SourceEntryPair> entryPairs = libraryData[i].entryPairs;
+ int entryCount = entryPairs.length;
+ for (int j = 0; j < entryCount; j++) {
+ sources.add(entryPairs[j].source);
+ }
+ }
+ return sources;
+ }
+
+ /**
+ * Return the sources described by the given descriptor.
+ *
+ * @param source the source with which the sources are associated
+ * @param dartEntry the entry corresponding to the source
+ * @param descriptor the descriptor indicating which sources are to be returned
+ * @return the sources described by the given descriptor
+ */
+ List<Source> _getSources(Source source, DartEntry dartEntry, DataDescriptor<List<Source>> descriptor) {
+ if (dartEntry == null) {
+ return Source.EMPTY_ARRAY;
+ }
+ CacheState exportState = dartEntry.getState(descriptor);
+ if (exportState == CacheState.ERROR) {
+ return Source.EMPTY_ARRAY;
+ } else if (exportState != CacheState.VALID) {
+ if (_taskData == null) {
+ _taskData = AnalysisContextImpl_this._createParseDartTask(source, dartEntry);
+ }
+ return Source.EMPTY_ARRAY;
+ }
+ return dartEntry.getValue(descriptor);
+ }
+}
+
+/**
+ * Instances of the class `TaskData` represent information about the next task to be
+ * performed. Each data has an implicit associated source: the source that might need to be
+ * analyzed. There are essentially three states that can be represented:
+ * * If [getTask] returns a non-`null` value, then that is the task that should
+ * be executed to further analyze the associated source.
+ * * Otherwise, if [isBlocked] returns `true`, then there is no work that can be
+ * done, but analysis for the associated source is not complete.
+ * * Otherwise, [getDependentSource] should return a source that needs to be analyzed
+ * before the analysis of the associated source can be completed.
+ */
+class AnalysisContextImpl_TaskData {
+ /**
+ * The task that is to be performed.
+ */
+ final AnalysisTask task;
+
+ /**
+ * A flag indicating whether the associated source is blocked waiting for its contents to be
+ * loaded.
+ */
+ final bool _blocked;
+
+ /**
+ * Initialize a newly created data holder.
+ *
+ * @param task the task that is to be performed
+ * @param blocked `true` if the associated source is blocked waiting for its contents to
+ * be loaded
+ */
+ AnalysisContextImpl_TaskData(this.task, this._blocked);
+
+ /**
+ * Return `true` if the associated source is blocked waiting for its contents to be
+ * loaded.
+ *
+ * @return `true` if the associated source is blocked waiting for its contents to be
+ * loaded
+ */
+ bool get isBlocked => _blocked;
+
+ @override
+ String toString() {
+ if (task == null) {
+ return "blocked: ${_blocked}";
+ }
+ return task.toString();
+ }
+}
+
+/**
+ * The interface `AnalysisContextStatistics` defines access to statistics about a single
+ * [AnalysisContext].
+ */
+abstract class AnalysisContextStatistics {
+ /**
+ * Return the statistics for each kind of cached data.
+ */
+ List<AnalysisContextStatistics_CacheRow> get cacheRows;
+
+ /**
+ * Return the exceptions that caused some entries to have a state of [CacheState#ERROR].
+ */
+ List<CaughtException> get exceptions;
+
+ /**
+ * Return information about each of the partitions in the cache.
+ */
+ List<AnalysisContextStatistics_PartitionData> get partitionData;
+
+ /**
+ * Return an array containing all of the sources in the cache.
+ */
+ List<Source> get sources;
+}
+
+/**
+ * Implementation of the [AnalysisContextStatistics].
+ */
+class AnalysisContextStatisticsImpl implements AnalysisContextStatistics {
+ Map<String, AnalysisContextStatistics_CacheRow> _dataMap = new HashMap<String, AnalysisContextStatistics_CacheRow>();
+
+ List<Source> _sources = new List<Source>();
+
+ HashSet<CaughtException> _exceptions = new HashSet<CaughtException>();
+
+ List<AnalysisContextStatistics_PartitionData> _partitionData;
+
+ void addSource(Source source) {
+ _sources.add(source);
+ }
+
+ @override
+ List<AnalysisContextStatistics_CacheRow> get cacheRows {
+ Iterable<AnalysisContextStatistics_CacheRow> items = _dataMap.values;
+ return new List.from(items);
+ }
+
+ @override
+ List<CaughtException> get exceptions => new List.from(_exceptions);
+
+ @override
+ List<AnalysisContextStatistics_PartitionData> get partitionData => _partitionData;
+
+ @override
+ List<Source> get sources => new List.from(_sources);
+
+ void putCacheItem(SourceEntry dartEntry, DataDescriptor descriptor) {
+ _internalPutCacheItem(dartEntry, descriptor, dartEntry.getState(descriptor));
+ }
+
+ void putCacheItemInLibrary(DartEntry dartEntry, Source librarySource, DataDescriptor descriptor) {
+ _internalPutCacheItem(dartEntry, descriptor, dartEntry.getStateInLibrary(descriptor, librarySource));
+ }
+
+ /**
+ * Set the partition data returned by this object to the given data.
+ */
+ void set partitionData(List<AnalysisContextStatistics_PartitionData> data) {
+ _partitionData = data;
+ }
+
+ void _internalPutCacheItem(SourceEntry dartEntry, DataDescriptor rowDesc, CacheState state) {
+ String rowName = rowDesc.toString();
+ AnalysisContextStatisticsImpl_CacheRowImpl row = _dataMap[rowName] as AnalysisContextStatisticsImpl_CacheRowImpl;
+ if (row == null) {
+ row = new AnalysisContextStatisticsImpl_CacheRowImpl(rowName);
+ _dataMap[rowName] = row;
+ }
+ row._incState(state);
+ if (state == CacheState.ERROR) {
+ CaughtException exception = dartEntry.exception;
+ if (exception != null) {
+ _exceptions.add(exception);
+ }
+ }
+ }
+}
+
+class AnalysisContextStatisticsImpl_CacheRowImpl implements AnalysisContextStatistics_CacheRow {
+ final String name;
+
+ int _errorCount = 0;
+
+ int _flushedCount = 0;
+
+ int _inProcessCount = 0;
+
+ int _invalidCount = 0;
+
+ int _validCount = 0;
+
+ AnalysisContextStatisticsImpl_CacheRowImpl(this.name);
+
+ @override
+ bool operator ==(Object obj) => obj is AnalysisContextStatisticsImpl_CacheRowImpl && obj.name == name;
+
+ @override
+ int get errorCount => _errorCount;
+
+ @override
+ int get flushedCount => _flushedCount;
+
+ @override
+ int get inProcessCount => _inProcessCount;
+
+ @override
+ int get invalidCount => _invalidCount;
+
+ @override
+ int get validCount => _validCount;
+
+ @override
+ int get hashCode => name.hashCode;
+
+ void _incState(CacheState state) {
+ if (state == CacheState.ERROR) {
+ _errorCount++;
+ }
+ if (state == CacheState.FLUSHED) {
+ _flushedCount++;
+ }
+ if (state == CacheState.IN_PROCESS) {
+ _inProcessCount++;
+ }
+ if (state == CacheState.INVALID) {
+ _invalidCount++;
+ }
+ if (state == CacheState.VALID) {
+ _validCount++;
+ }
+ }
+}
+
+class AnalysisContextStatisticsImpl_PartitionDataImpl implements AnalysisContextStatistics_PartitionData {
+ final int astCount;
+
+ final int totalCount;
+
+ AnalysisContextStatisticsImpl_PartitionDataImpl(this.astCount, this.totalCount);
+}
+
+/**
+ * Information about single piece of data in the cache.
+ */
+abstract class AnalysisContextStatistics_CacheRow {
+ /**
+ * Return the number of entries whose state is [CacheState#ERROR].
+ */
+ int get errorCount;
+
+ /**
+ * Return the number of entries whose state is [CacheState#FLUSHED].
+ */
+ int get flushedCount;
+
+ /**
+ * Return the number of entries whose state is [CacheState#IN_PROCESS].
+ */
+ int get inProcessCount;
+
+ /**
+ * Return the number of entries whose state is [CacheState#INVALID].
+ */
+ int get invalidCount;
+
+ /**
+ * Return the name of the data represented by this object.
+ */
+ String get name;
+
+ /**
+ * Return the number of entries whose state is [CacheState#VALID].
+ */
+ int get validCount;
+}
+
+/**
+ * Information about a single partition in the cache.
+ */
+abstract class AnalysisContextStatistics_PartitionData {
+ /**
+ * Return the number of entries in the partition that have an AST structure in one state or
+ * another.
+ */
+ int get astCount;
+
+ /**
+ * Return the total number of entries in the partition.
+ */
+ int get totalCount;
+}
+
+/**
+ * Instances of the class `AnalysisDelta` indicate changes to the types of analysis that
+ * should be performed.
+ */
+class AnalysisDelta {
+ /**
+ * A mapping from source to what type of analysis should be performed on that source.
+ */
+ HashMap<Source, AnalysisLevel> _analysisMap = new HashMap<Source, AnalysisLevel>();
+
+ /**
+ * Return a collection of the sources that have been added. This is equivalent to calling
+ * [getAnalysisLevels] and collecting all sources that do not have an analysis level of
+ * [AnalysisLevel#NONE].
+ *
+ * @return a collection of the sources
+ */
+ Iterable<Source> get addedSources {
+ List<Source> result = new List<Source>();
+ for (MapEntry<Source, AnalysisLevel> entry in getMapEntrySet(_analysisMap)) {
+ if (entry.getValue() != AnalysisLevel.NONE) {
+ result.add(entry.getKey());
+ }
+ }
+ return result;
+ }
+
+ /**
+ * Return a mapping of sources to the level of analysis that should be performed.
+ *
+ * @return the analysis map
+ */
+ Map<Source, AnalysisLevel> get analysisLevels => _analysisMap;
+
+ /**
+ * Record that the specified source should be analyzed at the specified level.
+ *
+ * @param source the source
+ * @param level the level at which the given source should be analyzed
+ */
+ void setAnalysisLevel(Source source, AnalysisLevel level) {
+ _analysisMap[source] = level;
+ }
+
+ @override
+ String toString() {
+ JavaStringBuilder builder = new JavaStringBuilder();
+ bool needsSeparator = _appendSources(builder, false, AnalysisLevel.ALL);
+ needsSeparator = _appendSources(builder, needsSeparator, AnalysisLevel.RESOLVED);
+ _appendSources(builder, needsSeparator, AnalysisLevel.NONE);
+ return builder.toString();
+ }
+
+ /**
+ * Append sources with the given analysis level, prefixed with a label and possibly a separator.
+ *
+ * @param builder the builder to which the sources are to be appended
+ * @param needsSeparator `true` if a separator is needed before the label
+ * @param level the analysis level of the sources to be appended
+ * @return `true` if future lists of sources will need a separator
+ */
+ bool _appendSources(JavaStringBuilder builder, bool needsSeparator, AnalysisLevel level) {
+ bool first = true;
+ for (MapEntry<Source, AnalysisLevel> entry in getMapEntrySet(_analysisMap)) {
+ if (entry.getValue() == level) {
+ if (first) {
+ first = false;
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append(level);
+ builder.append(" ");
+ } else {
+ builder.append(", ");
+ }
+ builder.append(entry.getKey().fullName);
+ }
+ }
+ return needsSeparator || !first;
+ }
+}
+
+/**
+ * The unique instance of the class `AnalysisEngine` serves as the entry point for the
+ * functionality provided by the analysis engine.
+ */
+class AnalysisEngine {
+ /**
+ * The suffix used for Dart source files.
+ */
+ static String SUFFIX_DART = "dart";
+
+ /**
+ * The short suffix used for HTML files.
+ */
+ static String SUFFIX_HTM = "htm";
+
+ /**
+ * The long suffix used for HTML files.
+ */
+ static String SUFFIX_HTML = "html";
+
+ /**
+ * The unique instance of this class.
+ */
+ static AnalysisEngine _UniqueInstance = new AnalysisEngine();
+
+ /**
+ * Return the unique instance of this class.
+ *
+ * @return the unique instance of this class
+ */
+ static AnalysisEngine get instance => _UniqueInstance;
+
+ /**
+ * Return `true` if the given file name is assumed to contain Dart source code.
+ *
+ * @param fileName the name of the file being tested
+ * @return `true` if the given file name is assumed to contain Dart source code
+ */
+ static bool isDartFileName(String fileName) {
+ if (fileName == null) {
+ return false;
+ }
+ return javaStringEqualsIgnoreCase(FileNameUtilities.getExtension(fileName), SUFFIX_DART);
+ }
+
+ /**
+ * Return `true` if the given file name is assumed to contain HTML.
+ *
+ * @param fileName the name of the file being tested
+ * @return `true` if the given file name is assumed to contain HTML
+ */
+ static bool isHtmlFileName(String fileName) {
+ if (fileName == null) {
+ return false;
+ }
+ String extension = FileNameUtilities.getExtension(fileName);
+ return javaStringEqualsIgnoreCase(extension, SUFFIX_HTML) || javaStringEqualsIgnoreCase(extension, SUFFIX_HTM);
+ }
+
+ /**
+ * The logger that should receive information about errors within the analysis engine.
+ */
+ Logger _logger = Logger.NULL;
+
+ /**
+ * The partition manager being used to manage the shared partitions.
+ */
+ final PartitionManager partitionManager = new PartitionManager();
+
+ /**
+ * Create a new context in which analysis can be performed.
+ *
+ * @return the analysis context that was created
+ */
+ AnalysisContext createAnalysisContext() {
+ //
+ // If instrumentation is ignoring data, return an uninstrumented analysis context.
+ //
+ if (Instrumentation.isNullLogger) {
+ return new AnalysisContextImpl();
+ }
+ return new InstrumentedAnalysisContextImpl.con1(new AnalysisContextImpl());
+ }
+
+ /**
+ * Return the logger that should receive information about errors within the analysis engine.
+ *
+ * @return the logger that should receive information about errors within the analysis engine
+ */
+ Logger get logger => _logger;
+
+ /**
+ * Set the logger that should receive information about errors within the analysis engine to the
+ * given logger.
+ *
+ * @param logger the logger that should receive information about errors within the analysis
+ * engine
+ */
+ void set logger(Logger logger) {
+ this._logger = logger == null ? Logger.NULL : logger;
+ }
+}
+
+/**
+ * The interface `AnalysisErrorInfo` contains the analysis errors and line information for the
+ * errors.
+ */
+abstract class AnalysisErrorInfo {
+ /**
+ * Return the errors that as a result of the analysis, or `null` if there were no errors.
+ *
+ * @return the errors as a result of the analysis
+ */
+ List<AnalysisError> get errors;
+
+ /**
+ * Return the line information associated with the errors, or `null` if there were no
+ * errors.
+ *
+ * @return the line information associated with the errors
+ */
+ LineInfo get lineInfo;
+}
+
+/**
+ * Instances of the class `AnalysisErrorInfoImpl` represent the analysis errors and line info
+ * associated with a source.
+ */
+class AnalysisErrorInfoImpl implements AnalysisErrorInfo {
+ /**
+ * The analysis errors associated with a source, or `null` if there are no errors.
+ */
+ final List<AnalysisError> errors;
+
+ /**
+ * The line information associated with the errors, or `null` if there are no errors.
+ */
+ final LineInfo lineInfo;
+
+ /**
+ * Initialize an newly created error info with the errors and line information
+ *
+ * @param errors the errors as a result of analysis
+ * @param lineinfo the line info for the errors
+ */
+ AnalysisErrorInfoImpl(this.errors, this.lineInfo);
+}
+
+/**
+ * The enumeration `AnalysisLevel` encodes the different levels at which a source can be
+ * analyzed.
+ */
+class AnalysisLevel extends Enum<AnalysisLevel> {
+ /**
+ * Indicates a source should be fully analyzed.
+ */
+ static const AnalysisLevel ALL = const AnalysisLevel('ALL', 0);
+
+ /**
+ * Indicates a source should be resolved and that errors, warnings and hints are needed.
+ */
+ static const AnalysisLevel ERRORS = const AnalysisLevel('ERRORS', 1);
+
+ /**
+ * Indicates a source should be resolved, but that errors, warnings and hints are not needed.
+ */
+ static const AnalysisLevel RESOLVED = const AnalysisLevel('RESOLVED', 2);
+
+ /**
+ * Indicates a source is not of interest to the client.
+ */
+ static const AnalysisLevel NONE = const AnalysisLevel('NONE', 3);
+
+ static const List<AnalysisLevel> values = const [ALL, ERRORS, RESOLVED, NONE];
+
+ const AnalysisLevel(String name, int ordinal) : super(name, ordinal);
+}
+
+/**
+ * The interface `AnalysisListener` defines the behavior of objects that are listening for
+ * results being produced by an analysis context.
+ */
+abstract class AnalysisListener {
+ /**
+ * Reports that a task is about to be performed by the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param taskDescription a human readable description of the task that is about to be performed
+ */
+ void aboutToPerformTask(AnalysisContext context, String taskDescription);
+
+ /**
+ * Reports that the errors associated with the given source in the given context has been updated
+ * to the given errors.
+ *
+ * @param context the context in which the new list of errors was produced
+ * @param source the source containing the errors that were computed
+ * @param errors the errors that were computed
+ * @param lineInfo the line information associated with the source
+ */
+ void computedErrors(AnalysisContext context, Source source, List<AnalysisError> errors, LineInfo lineInfo);
+
+ /**
+ * Reports that the given source is no longer included in the set of sources that are being
+ * analyzed by the given analysis context.
+ *
+ * @param context the context in which the source is being analyzed
+ * @param source the source that is no longer being analyzed
+ */
+ void excludedSource(AnalysisContext context, Source source);
+
+ /**
+ * Reports that the given source is now included in the set of sources that are being analyzed by
+ * the given analysis context.
+ *
+ * @param context the context in which the source is being analyzed
+ * @param source the source that is now being analyzed
+ */
+ void includedSource(AnalysisContext context, Source source);
+
+ /**
+ * Reports that the given Dart source was parsed in the given context.
+ *
+ * @param context the context in which the source was parsed
+ * @param source the source that was parsed
+ * @param unit the result of parsing the source in the given context
+ */
+ void parsedDart(AnalysisContext context, Source source, CompilationUnit unit);
+
+ /**
+ * Reports that the given HTML source was parsed in the given context.
+ *
+ * @param context the context in which the source was parsed
+ * @param source the source that was parsed
+ * @param unit the result of parsing the source in the given context
+ */
+ void parsedHtml(AnalysisContext context, Source source, ht.HtmlUnit unit);
+
+ /**
+ * Reports that the given Dart source was resolved in the given context.
+ *
+ * @param context the context in which the source was resolved
+ * @param source the source that was resolved
+ * @param unit the result of resolving the source in the given context
+ */
+ void resolvedDart(AnalysisContext context, Source source, CompilationUnit unit);
+
+ /**
+ * Reports that the given HTML source was resolved in the given context.
+ *
+ * @param context the context in which the source was resolved
+ * @param source the source that was resolved
+ * @param unit the result of resolving the source in the given context
+ */
+ void resolvedHtml(AnalysisContext context, Source source, ht.HtmlUnit unit);
+}
+
+/**
+ * The interface `AnalysisOptions` defines the behavior of objects that provide access to a
+ * set of analysis options used to control the behavior of an analysis context.
+ */
+abstract class AnalysisOptions {
+ /**
+ * Return `true` if analysis is to analyze Angular.
+ *
+ * @return `true` if analysis is to analyze Angular
+ */
+ bool get analyzeAngular;
+
+ /**
+ * Return `true` if analysis is to parse and analyze function bodies.
+ *
+ * @return `true` if analysis is to parse and analyzer function bodies
+ */
+ bool get analyzeFunctionBodies;
+
+ /**
+ * Return `true` if analysis is to analyze Polymer.
+ *
+ * @return `true` if analysis is to analyze Polymer
+ */
+ bool get analyzePolymer;
+
+ /**
+ * Return the maximum number of sources for which AST structures should be kept in the cache.
+ *
+ * @return the maximum number of sources for which AST structures should be kept in the cache
+ */
+ int get cacheSize;
+
+ /**
+ * Return `true` if analysis is to generate dart2js related hint results.
+ *
+ * @return `true` if analysis is to generate dart2js related hint results
+ */
+ bool get dart2jsHint;
+
+ /**
+ * Return `true` if analysis is to include the new async support.
+ *
+ * @return `true` if analysis is to include the new async support
+ */
+ bool get enableAsync;
+
+ /**
+ * Return `true` if analysis is to include the new deferred loading support.
+ *
+ * @return `true` if analysis is to include the new deferred loading support
+ */
+ bool get enableDeferredLoading;
+
+ /**
+ * Return `true` if analysis is to include the new enum support.
+ *
+ * @return `true` if analysis is to include the new enum support
+ */
+ bool get enableEnum;
+
+ /**
+ * Return `true` if errors, warnings and hints should be generated for sources in the SDK.
+ * The default value is `false`.
+ *
+ * @return `true` if errors, warnings and hints should be generated for the SDK
+ */
+ bool get generateSdkErrors;
+
+ /**
+ * Return `true` if analysis is to generate hint results (e.g. type inference based
+ * information and pub best practices).
+ *
+ * @return `true` if analysis is to generate hint results
+ */
+ bool get hint;
+
+ /**
+ * Return `true` if incremental analysis should be used.
+ *
+ * @return `true` if incremental analysis should be used
+ */
+ bool get incremental;
+
+ /**
+ * Return `true` if analysis is to parse comments.
+ *
+ * @return `true` if analysis is to parse comments
+ */
+ bool get preserveComments;
+}
+
+/**
+ * Instances of the class `AnalysisOptions` represent a set of analysis options used to
+ * control the behavior of an analysis context.
+ */
+class AnalysisOptionsImpl implements AnalysisOptions {
+ /**
+ * The maximum number of sources for which data should be kept in the cache.
+ */
+ static int DEFAULT_CACHE_SIZE = 64;
+
+ /**
+ * The default value for enabling async support.
+ */
+ static bool DEFAULT_ENABLE_ASYNC = false;
+
+ /**
+ * The default value for enabling deferred loading.
+ */
+ static bool DEFAULT_ENABLE_DEFERRED_LOADING = true;
+
+ /**
+ * The default value for enabling enum support.
+ */
+ static bool DEFAULT_ENABLE_ENUM = false;
+
+ /**
+ * A flag indicating whether analysis is to analyze Angular.
+ */
+ bool analyzeAngular = true;
+
+ /**
+ * A flag indicating whether analysis is to parse and analyze function bodies.
+ */
+ bool analyzeFunctionBodies = true;
+
+ /**
+ * A flag indicating whether analysis is to analyze Polymer.
+ */
+ bool analyzePolymer = true;
+
+ /**
+ * The maximum number of sources for which AST structures should be kept in the cache.
+ */
+ int cacheSize = DEFAULT_CACHE_SIZE;
+
+ /**
+ * A flag indicating whether analysis is to generate dart2js related hint results.
+ */
+ bool dart2jsHint = true;
+
+ /**
+ * A flag indicating whether analysis is to enable async support.
+ */
+ bool enableAsync = DEFAULT_ENABLE_ASYNC;
+
+ /**
+ * A flag indicating whether analysis is to enable deferred loading.
+ */
+ bool enableDeferredLoading = DEFAULT_ENABLE_DEFERRED_LOADING;
+
+ /**
+ * A flag indicating whether analysis is to enable enum support.
+ */
+ bool enableEnum = DEFAULT_ENABLE_ENUM;
+
+ /**
+ * A flag indicating whether errors, warnings and hints should be generated for sources in the
+ * SDK.
+ */
+ bool _generateSdkErrors = false;
+
+ /**
+ * A flag indicating whether analysis is to generate hint results (e.g. type inference based
+ * information and pub best practices).
+ */
+ bool hint = true;
+
+ /**
+ * A flag indicating whether incremental analysis should be used.
+ */
+ bool incremental = false;
+
+ /**
+ * A flag indicating whether analysis is to parse comments.
+ */
+ bool preserveComments = true;
+
+ /**
+ * Initialize a newly created set of analysis options to have their default values.
+ */
+ AnalysisOptionsImpl();
+
+ /**
+ * Initialize a newly created set of analysis options to have the same values as those in the
+ * given set of analysis options.
+ *
+ * @param options the analysis options whose values are being copied
+ */
+ AnalysisOptionsImpl.con1(AnalysisOptions options) {
+ analyzeAngular = options.analyzeAngular;
+ analyzeFunctionBodies = options.analyzeFunctionBodies;
+ analyzePolymer = options.analyzePolymer;
+ cacheSize = options.cacheSize;
+ dart2jsHint = options.dart2jsHint;
+ enableAsync = options.enableAsync;
+ enableDeferredLoading = options.enableDeferredLoading;
+ enableEnum = options.enableEnum;
+ _generateSdkErrors = options.generateSdkErrors;
+ hint = options.hint;
+ incremental = options.incremental;
+ preserveComments = options.preserveComments;
+ }
+
+ @override
+ bool get generateSdkErrors => _generateSdkErrors;
+
+ /**
+ * Set whether errors, warnings and hints should be generated for sources in the SDK to match the
+ * given value.
+ *
+ * @param generate `true` if errors, warnings and hints should be generated for sources in
+ * the SDK
+ */
+ void set generateSdkErrors(bool generate) {
+ _generateSdkErrors = generate;
+ }
+}
+
+/**
+ * Instances of the class `AnalysisResult`
+ */
+class AnalysisResult {
+ /**
+ * The change notices associated with this result, or `null` if there were no changes and
+ * there is no more work to be done.
+ */
+ final List<ChangeNotice> _notices;
+
+ /**
+ * The number of milliseconds required to determine which task was to be performed.
+ */
+ final int getTime;
+
+ /**
+ * The name of the class of the task that was performed.
+ */
+ final String taskClassName;
+
+ /**
+ * The number of milliseconds required to perform the task.
+ */
+ final int performTime;
+
+ /**
+ * Initialize a newly created analysis result to have the given values.
+ *
+ * @param notices the change notices associated with this result
+ * @param getTime the number of milliseconds required to determine which task was to be performed
+ * @param taskClassName the name of the class of the task that was performed
+ * @param performTime the number of milliseconds required to perform the task
+ */
+ AnalysisResult(this._notices, this.getTime, this.taskClassName, this.performTime);
+
+ /**
+ * Return the change notices associated with this result, or `null` if there were no changes
+ * and there is no more work to be done.
+ *
+ * @return the change notices associated with this result
+ */
+ List<ChangeNotice> get changeNotices => _notices;
+
+ /**
+ * Return `true` if there is more to be performed after the task that was performed.
+ *
+ * @return `true` if there is more to be performed after the task that was performed
+ */
+ bool get hasMoreWork => _notices != null;
+}
+
+/**
+ * The abstract class `AnalysisTask` defines the behavior of objects used to perform an
+ * analysis task.
+ */
+abstract class AnalysisTask {
+ /**
+ * The context in which the task is to be performed.
+ */
+ final InternalAnalysisContext context;
+
+ /**
+ * The exception that was thrown while performing this task, or `null` if the task completed
+ * successfully.
+ */
+ CaughtException _thrownException;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ */
+ AnalysisTask(this.context);
+
+ /**
+ * Use the given visitor to visit this task.
+ *
+ * @param visitor the visitor that should be used to visit this task
+ * @return the value returned by the visitor
+ * @throws AnalysisException if the visitor throws the exception
+ */
+ accept(AnalysisTaskVisitor visitor);
+
+ /**
+ * Return the exception that was thrown while performing this task, or `null` if the task
+ * completed successfully.
+ *
+ * @return the exception that was thrown while performing this task
+ */
+ CaughtException get exception => _thrownException;
+
+ /**
+ * Perform this analysis task and use the given visitor to visit this task after it has completed.
+ *
+ * @param visitor the visitor used to visit this task after it has completed
+ * @return the value returned by the visitor
+ * @throws AnalysisException if the visitor throws the exception
+ */
+ Object perform(AnalysisTaskVisitor visitor) {
+ try {
+ _safelyPerform();
+ } on AnalysisException catch (exception, stackTrace) {
+ _thrownException = new CaughtException(exception, stackTrace);
+ AnalysisEngine.instance.logger.logInformation2("Task failed: ${taskDescription}", new CaughtException(exception, stackTrace));
+ }
+ return accept(visitor);
+ }
+
+ @override
+ String toString() => taskDescription;
+
+ /**
+ * Return a textual description of this task.
+ *
+ * @return a textual description of this task
+ */
+ String get taskDescription;
+
+ /**
+ * Perform this analysis task, protected by an exception handler.
+ *
+ * @throws AnalysisException if an exception occurs while performing the task
+ */
+ void internalPerform();
+
+ /**
+ * Perform this analysis task, ensuring that all exceptions are wrapped in an
+ * [AnalysisException].
+ *
+ * @throws AnalysisException if any exception occurs while performing the task
+ */
+ void _safelyPerform() {
+ try {
+ internalPerform();
+ } on AnalysisException catch (exception) {
+ throw exception;
+ } catch (exception, stackTrace) {
+ throw new AnalysisException("Exception", new CaughtException(exception, stackTrace));
+ }
+ }
+}
+
+/**
+ * The interface `AnalysisTaskVisitor` defines the behavior of objects that can visit tasks.
+ * While tasks are not structured in any interesting way, this class provides the ability to
+ * dispatch to an appropriate method.
+ */
+abstract class AnalysisTaskVisitor<E> {
+ /**
+ * Visit a [GenerateDartErrorsTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitGenerateDartErrorsTask(GenerateDartErrorsTask task);
+
+ /**
+ * Visit a [GenerateDartHintsTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitGenerateDartHintsTask(GenerateDartHintsTask task);
+
+ /**
+ * Visit a [GetContentTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitGetContentTask(GetContentTask task);
+
+ /**
+ * Visit an [IncrementalAnalysisTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitIncrementalAnalysisTask(IncrementalAnalysisTask incrementalAnalysisTask);
+
+ /**
+ * Visit a [ParseDartTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitParseDartTask(ParseDartTask task);
+
+ /**
+ * Visit a [ParseHtmlTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitParseHtmlTask(ParseHtmlTask task);
+
+ /**
+ * Visit a [PolymerBuildHtmlTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitPolymerBuildHtmlTask(PolymerBuildHtmlTask task);
+
+ /**
+ * Visit a [PolymerResolveHtmlTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitPolymerResolveHtmlTask(PolymerResolveHtmlTask task);
+
+ /**
+ * Visit a [ResolveAngularComponentTemplateTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitResolveAngularComponentTemplateTask(ResolveAngularComponentTemplateTask task);
+
+ /**
+ * Visit a [ResolveAngularEntryHtmlTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitResolveAngularEntryHtmlTask(ResolveAngularEntryHtmlTask task);
+
+ /**
+ * Visit a [ResolveDartLibraryCycleTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitResolveDartLibraryCycleTask(ResolveDartLibraryCycleTask task);
+
+ /**
+ * Visit a [ResolveDartLibraryTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitResolveDartLibraryTask(ResolveDartLibraryTask task);
+
+ /**
+ * Visit a [ResolveDartUnitTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitResolveDartUnitTask(ResolveDartUnitTask task);
+
+ /**
+ * Visit a [ResolveHtmlTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitResolveHtmlTask(ResolveHtmlTask task);
+
+ /**
+ * Visit a [ScanDartTask].
+ *
+ * @param task the task to be visited
+ * @return the result of visiting the task
+ * @throws AnalysisException if the visitor throws an exception for some reason
+ */
+ E visitScanDartTask(ScanDartTask task);
+}
+
+/**
+ * An [Expression] with optional [AngularFormatterNode]s.
+ */
+class AngularExpression {
+ /**
+ * The [Expression] to apply formatters to.
+ */
+ final Expression expression;
+
+ /**
+ * The formatters to apply.
+ */
+ final List<AngularFormatterNode> formatters;
+
+ AngularExpression(this.expression, this.formatters);
+
+ /**
+ * Return the offset of the character immediately following the last character of this node's
+ * source range. This is equivalent to `node.getOffset() + node.getLength()`.
+ *
+ * @return the offset of the character just past the node's source range
+ */
+ int get end {
+ if (formatters.isEmpty) {
+ return expression.end;
+ }
+ AngularFormatterNode lastFormatter = formatters[formatters.length - 1];
+ List<AngularFormatterArgument> formatterArguments = lastFormatter.arguments;
+ if (formatterArguments.isEmpty) {
+ return lastFormatter.name.end;
+ }
+ return formatterArguments[formatterArguments.length - 1].expression.end;
+ }
+
+ /**
+ * Return Dart [Expression]s this Angular expression consists of.
+ */
+ List<Expression> get expressions {
+ List<Expression> expressions = [];
+ expressions.add(expression);
+ for (AngularFormatterNode formatter in formatters) {
+ expressions.add(formatter.name);
+ for (AngularFormatterArgument formatterArgument in formatter.arguments) {
+ expressions.addAll(formatterArgument.subExpressions);
+ expressions.add(formatterArgument.expression);
+ }
+ }
+ return expressions;
+ }
+
+ /**
+ * Return the number of characters in the expression's source range.
+ */
+ int get length => end - offset;
+
+ /**
+ * Return the offset of the first character in the expression's source range.
+ */
+ int get offset => expression.offset;
+}
+
+/**
+ * Angular formatter argument.
+ */
+class AngularFormatterArgument {
+ /**
+ * The [TokenType#COLON] token.
+ */
+ final Token token;
+
+ /**
+ * The argument expression.
+ */
+ final Expression expression;
+
+ /**
+ * The optional sub-[Expression]s.
+ */
+ List<Expression> subExpressions = Expression.EMPTY_ARRAY;
+
+ AngularFormatterArgument(this.token, this.expression);
+}
+
+/**
+ * Angular formatter node.
+ */
+class AngularFormatterNode {
+ /**
+ * The [TokenType#BAR] token.
+ */
+ final Token token;
+
+ /**
+ * The name of the formatter.
+ */
+ final SimpleIdentifier name;
+
+ /**
+ * The arguments for this formatter.
+ */
+ final List<AngularFormatterArgument> arguments;
+
+ AngularFormatterNode(this.token, this.name, this.arguments);
+}
+
+/**
+ * Instances of the class [AngularHtmlUnitResolver] resolve Angular specific expressions.
+ */
+class AngularHtmlUnitResolver extends ht.RecursiveXmlVisitor<Object> {
+ static String _NG_APP = "ng-app";
+
+ /**
+ * Checks if given [Element] is an artificial local variable and returns corresponding
+ * [AngularElement], or `null` otherwise.
+ */
+ static AngularElement getAngularElement(Element element) {
+ // may be artificial local variable, replace with AngularElement
+ if (element is LocalVariableElement) {
+ LocalVariableElement local = element;
+ List<ToolkitObjectElement> toolkitObjects = local.toolkitObjects;
+ if (toolkitObjects.length == 1 && toolkitObjects[0] is AngularElement) {
+ return toolkitObjects[0] as AngularElement;
+ }
+ }
+ // not a special Element
+ return null;
+ }
+
+ /**
+ * @return `true` if the given [HtmlUnit] has <code>ng-app</code> annotation.
+ */
+ static bool hasAngularAnnotation(ht.HtmlUnit htmlUnit) {
+ try {
+ htmlUnit.accept(new RecursiveXmlVisitor_AngularHtmlUnitResolver_hasAngularAnnotation());
+ } on AngularHtmlUnitResolver_FoundAppError catch (e) {
+ return true;
+ }
+ return false;
+ }
+
+ static SimpleIdentifier _createIdentifier(String name, int offset) {
+ StringToken token = _createStringToken(name, offset);
+ return new SimpleIdentifier(token);
+ }
+
+ /**
+ * Adds [AngularElement] declared by the given top-level [Element].
+ *
+ * @param angularElements the list to fill with top-level [AngularElement]s
+ * @param classElement the [ClassElement] to get [AngularElement]s from
+ */
+ static void _addAngularElementsFromClass(Set<AngularElement> angularElements, ClassElement classElement) {
+ for (ToolkitObjectElement toolkitObject in classElement.toolkitObjects) {
+ if (toolkitObject is AngularElement) {
+ angularElements.add(toolkitObject);
+ }
+ }
+ }
+
+ /**
+ * Returns the array of all top-level Angular elements that could be used in this library.
+ *
+ * @param libraryElement the [LibraryElement] to analyze
+ * @return the array of all top-level Angular elements that could be used in this library
+ */
+ static void _addAngularElementsFromLibrary(Set<AngularElement> angularElements, LibraryElement library, Set<LibraryElement> visited) {
+ if (library == null) {
+ return;
+ }
+ if (!visited.add(library)) {
+ return;
+ }
+ // add Angular elements from current library
+ for (CompilationUnitElement unit in library.units) {
+ angularElements.addAll(unit.angularViews);
+ for (ClassElement type in unit.types) {
+ _addAngularElementsFromClass(angularElements, type);
+ }
+ }
+ // handle imports
+ for (ImportElement importElement in library.imports) {
+ LibraryElement importedLibrary = importElement.importedLibrary;
+ _addAngularElementsFromLibrary(angularElements, importedLibrary, visited);
+ }
+ }
+
+ static StringToken _createStringToken(String name, int offset) => new StringToken(TokenType.IDENTIFIER, name, offset);
+
+ /**
+ * Returns the array of all top-level Angular elements that could be used in this library.
+ *
+ * @param libraryElement the [LibraryElement] to analyze
+ * @return the array of all top-level Angular elements that could be used in this library
+ */
+ static List<AngularElement> _getAngularElements(Set<LibraryElement> libraries, LibraryElement libraryElement) {
+ Set<AngularElement> angularElements = new Set();
+ _addAngularElementsFromLibrary(angularElements, libraryElement, libraries);
+ return new List.from(angularElements);
+ }
+
+ /**
+ * Returns the external Dart [CompilationUnit] referenced by the given [HtmlUnit].
+ */
+ static CompilationUnit _getDartUnit(AnalysisContext context, ht.HtmlUnit unit) {
+ for (HtmlScriptElement script in unit.element.scripts) {
+ if (script is ExternalHtmlScriptElement) {
+ Source scriptSource = script.scriptSource;
+ if (scriptSource != null) {
+ return context.resolveCompilationUnit2(scriptSource, scriptSource);
+ }
+ }
+ }
+ return null;
+ }
+
+ static Set<Source> _getLibrarySources(Set<LibraryElement> libraries) {
+ Set<Source> sources = new Set();
+ for (LibraryElement library in libraries) {
+ sources.add(library.source);
+ }
+ return sources;
+ }
+
+ final InternalAnalysisContext _context;
+
+ TypeProvider _typeProvider;
+
+ AngularHtmlUnitResolver_FilteringAnalysisErrorListener _errorListener;
+
+ final Source _source;
+
+ final LineInfo _lineInfo;
+
+ final ht.HtmlUnit _unit;
+
+ List<AngularElement> _angularElements;
+
+ List<NgProcessor> _processors = [];
+
+ LibraryElementImpl _libraryElement;
+
+ CompilationUnitElementImpl _unitElement;
+
+ FunctionElementImpl _functionElement;
+
+ ResolverVisitor _resolver;
+
+ bool _isAngular = false;
+
+ List<LocalVariableElementImpl> _definedVariables = [];
+
+ Set<LibraryElement> _injectedLibraries = new Set();
+
+ Scope _topNameScope;
+
+ Scope _nameScope;
+
+ AngularHtmlUnitResolver(this._context, AnalysisErrorListener errorListener, this._source, this._lineInfo, this._unit) {
+ this._typeProvider = _context.typeProvider;
+ this._errorListener = new AngularHtmlUnitResolver_FilteringAnalysisErrorListener(errorListener);
+ }
+
+ /**
+ * The [AngularApplication] for the Web application with this entry point, may be
+ * `null` if not an entry point.
+ */
+ AngularApplication calculateAngularApplication() {
+ // check if Angular at all
+ if (!hasAngularAnnotation(_unit)) {
+ return null;
+ }
+ // prepare resolved Dart unit
+ CompilationUnit dartUnit = _getDartUnit(_context, _unit);
+ if (dartUnit == null) {
+ return null;
+ }
+ // prepare accessible Angular elements
+ LibraryElement libraryElement = dartUnit.element.library;
+ Set<LibraryElement> libraries = new Set();
+ List<AngularElement> angularElements = _getAngularElements(libraries, libraryElement);
+ // resolve AngularComponentElement template URIs
+ // TODO(scheglov) resolve to HtmlElement to allow F3 ?
+ Set<Source> angularElementsSources = new Set();
+ for (AngularElement angularElement in angularElements) {
+ if (angularElement is AngularHasTemplateElement) {
+ AngularHasTemplateElement hasTemplate = angularElement;
+ angularElementsSources.add(angularElement.source);
+ String templateUri = hasTemplate.templateUri;
+ if (templateUri == null) {
+ continue;
+ }
+ try {
+ Source templateSource = _context.sourceFactory.forUri2(_source.resolveRelativeUri(parseUriWithException(templateUri)));
+ if (!_context.exists(templateSource)) {
+ templateSource = _context.sourceFactory.resolveUri(_source, "package:${templateUri}");
+ if (!_context.exists(templateSource)) {
+ _errorListener.onError(new AnalysisError.con2(angularElement.source, hasTemplate.templateUriOffset, templateUri.length, AngularCode.URI_DOES_NOT_EXIST, [templateUri]));
+ continue;
+ }
+ }
+ if (!AnalysisEngine.isHtmlFileName(templateUri)) {
+ continue;
+ }
+ if (hasTemplate is AngularComponentElementImpl) {
+ hasTemplate.templateSource = templateSource;
+ }
+ if (hasTemplate is AngularViewElementImpl) {
+ hasTemplate.templateSource = templateSource;
+ }
+ } on URISyntaxException catch (exception) {
+ _errorListener.onError(new AnalysisError.con2(angularElement.source, hasTemplate.templateUriOffset, templateUri.length, AngularCode.INVALID_URI, [templateUri]));
+ }
+ }
+ }
+ // create AngularApplication
+ AngularApplication application = new AngularApplication(_source, _getLibrarySources(libraries), angularElements, new List.from(angularElementsSources));
+ // set AngularApplication for each AngularElement
+ for (AngularElement angularElement in angularElements) {
+ (angularElement as AngularElementImpl).application = application;
+ }
+ // done
+ return application;
+ }
+
+ /**
+ * Resolves [source] as an [AngularComponentElement] template file.
+ *
+ * @param application the Angular application we are resolving for
+ * @param component the [AngularComponentElement] to resolve template for, not `null`
+ */
+ void resolveComponentTemplate(AngularApplication application, AngularComponentElement component) {
+ _isAngular = true;
+ _resolveInternal(application.elements, component);
+ }
+
+ /**
+ * Resolves [source] as an Angular application entry point.
+ */
+ void resolveEntryPoint(AngularApplication application) {
+ _resolveInternal(application.elements, null);
+ }
+
+ @override
+ Object visitXmlAttributeNode(ht.XmlAttributeNode node) {
+ _parseEmbeddedExpressionsInAttribute(node);
+ _resolveExpressions(node.expressions);
+ return super.visitXmlAttributeNode(node);
+ }
+
+ @override
+ Object visitXmlTagNode(ht.XmlTagNode node) {
+ bool wasAngular = _isAngular;
+ try {
+ // new Angular context
+ if (node.getAttribute(_NG_APP) != null) {
+ _isAngular = true;
+ _visitModelDirectives(node);
+ }
+ // not Angular
+ if (!_isAngular) {
+ return super.visitXmlTagNode(node);
+ }
+ // process node in separate name scope
+ _pushNameScope();
+ try {
+ _parseEmbeddedExpressionsInTag(node);
+ // apply processors
+ for (NgProcessor processor in _processors) {
+ if (processor.canApply(node)) {
+ processor.apply(this, node);
+ }
+ }
+ // resolve expressions
+ _resolveExpressions(node.expressions);
+ // process children
+ return super.visitXmlTagNode(node);
+ } finally {
+ _popNameScope();
+ }
+ } finally {
+ _isAngular = wasAngular;
+ }
+ }
+
+ /**
+ * Creates new [LocalVariableElementImpl] with given type and identifier.
+ *
+ * @param type the [Type] of the variable
+ * @param identifier the identifier to create variable for
+ * @return the new [LocalVariableElementImpl]
+ */
+ LocalVariableElementImpl _createLocalVariableFromIdentifier(DartType type, SimpleIdentifier identifier) {
+ LocalVariableElementImpl variable = new LocalVariableElementImpl.forNode(identifier);
+ _definedVariables.add(variable);
+ variable.type = type;
+ return variable;
+ }
+
+ /**
+ * Creates new [LocalVariableElementImpl] with given name and type.
+ *
+ * @param type the [Type] of the variable
+ * @param name the name of the variable
+ * @return the new [LocalVariableElementImpl]
+ */
+ LocalVariableElementImpl _createLocalVariableWithName(DartType type, String name) {
+ SimpleIdentifier identifier = _createIdentifier(name, 0);
+ return _createLocalVariableFromIdentifier(type, identifier);
+ }
+
+ /**
+ * Declares the given [LocalVariableElementImpl] in the [topNameScope].
+ */
+ void _defineTopVariable(LocalVariableElementImpl variable) {
+ _recordDefinedVariable(variable);
+ _topNameScope.define(variable);
+ _recordTypeLibraryInjected(variable);
+ }
+
+ /**
+ * Declares the given [LocalVariableElementImpl] in the current [nameScope].
+ */
+ void _defineVariable(LocalVariableElementImpl variable) {
+ _recordDefinedVariable(variable);
+ _nameScope.define(variable);
+ _recordTypeLibraryInjected(variable);
+ }
+
+ /**
+ * @return the [AngularElement] with the given name, maybe `null`.
+ */
+ AngularElement _findAngularElement(String name) {
+ for (AngularElement element in _angularElements) {
+ if (name == element.name) {
+ return element;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * @return the [TypeProvider] of the [AnalysisContext].
+ */
+ TypeProvider get typeProvider => _typeProvider;
+
+ /**
+ * Parses given [String] as an [AngularExpression] at the given offset.
+ */
+ AngularExpression _parseAngularExpression(String contents, int startIndex, int endIndex, int offset) {
+ Token token = _scanDart(contents, startIndex, endIndex, offset);
+ return _parseAngularExpressionInToken(token);
+ }
+
+ AngularExpression _parseAngularExpressionInToken(Token token) {
+ List<Token> tokens = _splitAtBar(token);
+ Expression mainExpression = _parseDartExpressionInToken(tokens[0]);
+ // parse formatters
+ List<AngularFormatterNode> formatters = [];
+ for (int i = 1; i < tokens.length; i++) {
+ Token formatterToken = tokens[i];
+ Token barToken = formatterToken;
+ formatterToken = formatterToken.next;
+ // parse name
+ Expression nameExpression = _parseDartExpressionInToken(formatterToken);
+ if (nameExpression is! SimpleIdentifier) {
+ _reportErrorForNode(AngularCode.INVALID_FORMATTER_NAME, nameExpression, []);
+ continue;
+ }
+ SimpleIdentifier name = nameExpression as SimpleIdentifier;
+ formatterToken = name.endToken.next;
+ // parse arguments
+ List<AngularFormatterArgument> arguments = [];
+ while (formatterToken.type != TokenType.EOF) {
+ // skip ":"
+ Token colonToken = formatterToken;
+ if (colonToken.type == TokenType.COLON) {
+ formatterToken = formatterToken.next;
+ } else {
+ _reportErrorForToken(AngularCode.MISSING_FORMATTER_COLON, colonToken, []);
+ }
+ // parse argument
+ Expression argument = _parseDartExpressionInToken(formatterToken);
+ arguments.add(new AngularFormatterArgument(colonToken, argument));
+ // next token
+ formatterToken = argument.endToken.next;
+ }
+ formatters.add(new AngularFormatterNode(barToken, name, arguments));
+ }
+ // done
+ return new AngularExpression(mainExpression, formatters);
+ }
+
+ /**
+ * Parses given [String] as an [Expression] at the given offset.
+ */
+ Expression _parseDartExpression(String contents, int startIndex, int endIndex, int offset) {
+ Token token = _scanDart(contents, startIndex, endIndex, offset);
+ return _parseDartExpressionInToken(token);
+ }
+
+ Expression _parseDartExpressionInToken(Token token) {
+ Parser parser = new Parser(_source, _errorListener);
+ return parser.parseExpression(token);
+ }
+
+ void _popNameScope() {
+ _nameScope = _resolver.popNameScope();
+ }
+
+ void _pushNameScope() {
+ _nameScope = _resolver.pushNameScope();
+ }
+
+ /**
+ * Reports given [ErrorCode] at the given [AstNode].
+ */
+ void _reportErrorForNode(ErrorCode errorCode, AstNode node, List<Object> arguments) {
+ _reportErrorForOffset(errorCode, node.offset, node.length, arguments);
+ }
+
+ /**
+ * Reports given [ErrorCode] at the given position.
+ */
+ void _reportErrorForOffset(ErrorCode errorCode, int offset, int length, List<Object> arguments) {
+ _errorListener.onError(new AnalysisError.con2(_source, offset, length, errorCode, arguments));
+ }
+
+ /**
+ * Reports given [ErrorCode] at the given [Token].
+ */
+ void _reportErrorForToken(ErrorCode errorCode, Token token, List<Object> arguments) {
+ _reportErrorForOffset(errorCode, token.offset, token.length, arguments);
+ }
+
+ void _resolveExpression(AngularExpression angularExpression) {
+ List<Expression> dartExpressions = angularExpression.expressions;
+ for (Expression dartExpression in dartExpressions) {
+ _resolveNode(dartExpression);
+ }
+ }
+
+ /**
+ * Resolves given [AstNode] using [resolver].
+ */
+ void _resolveNode(AstNode node) {
+ node.accept(_resolver);
+ }
+
+ Token _scanDart(String contents, int startIndex, int endIndex, int offset) => ht.HtmlParser.scanDartSource(_source, _lineInfo, contents.substring(startIndex, endIndex), offset + startIndex, _errorListener);
+
+ /**
+ * Puts into [libraryElement] an artificial [LibraryElementImpl] for this HTML
+ * [Source].
+ */
+ void _createLibraryElement() {
+ // create CompilationUnitElementImpl
+ String unitName = _source.shortName;
+ _unitElement = new CompilationUnitElementImpl(unitName);
+ _unitElement.source = _source;
+ // create LibraryElementImpl
+ _libraryElement = new LibraryElementImpl.forNode(_context, null);
+ _libraryElement.definingCompilationUnit = _unitElement;
+ _libraryElement.angularHtml = true;
+ _injectedLibraries.add(_libraryElement);
+ // create FunctionElementImpl
+ _functionElement = new FunctionElementImpl.forOffset(0);
+ _unitElement.functions = <FunctionElement> [_functionElement];
+ }
+
+ /**
+ * Creates new [NgProcessor] for the given [AngularElement], maybe `null` if not
+ * supported.
+ */
+ NgProcessor _createProcessor(AngularElement element) {
+ if (element is AngularComponentElement) {
+ AngularComponentElement component = element;
+ return new NgComponentElementProcessor(component);
+ }
+ if (element is AngularControllerElement) {
+ AngularControllerElement controller = element;
+ return new NgControllerElementProcessor(controller);
+ }
+ if (element is AngularDecoratorElement) {
+ AngularDecoratorElement directive = element;
+ return new NgDecoratorElementProcessor(directive);
+ }
+ return null;
+ }
+
+ /**
+ * Puts into [resolver] an [ResolverVisitor] to resolve [Expression]s in
+ * [source].
+ */
+ void _createResolver() {
+ InheritanceManager inheritanceManager = new InheritanceManager(_libraryElement);
+ _resolver = new ResolverVisitor.con2(_libraryElement, _source, _typeProvider, inheritanceManager, _errorListener);
+ _topNameScope = _resolver.pushNameScope();
+ // add Scope variables - no type, no location, just to avoid warnings
+ {
+ DartType type = _typeProvider.dynamicType;
+ _topNameScope.define(_createLocalVariableWithName(type, "\$id"));
+ _topNameScope.define(_createLocalVariableWithName(type, "\$parent"));
+ _topNameScope.define(_createLocalVariableWithName(type, "\$root"));
+ }
+ }
+
+ /**
+ * Defines variable for the given [AngularElement] with type of the enclosing
+ * [ClassElement].
+ */
+ void _defineTopVariable_forClassElement(AngularElement element) {
+ ClassElement classElement = element.enclosingElement as ClassElement;
+ InterfaceType type = classElement.type;
+ LocalVariableElementImpl variable = _createLocalVariableWithName(type, element.name);
+ _defineTopVariable(variable);
+ variable.toolkitObjects = <AngularElement> [element];
+ }
+
+ /**
+ * Defines variable for the given [AngularScopePropertyElement].
+ */
+ void _defineTopVariable_forScopeProperty(AngularScopePropertyElement element) {
+ DartType type = element.type;
+ LocalVariableElementImpl variable = _createLocalVariableWithName(type, element.name);
+ _defineTopVariable(variable);
+ variable.toolkitObjects = <AngularElement> [element];
+ }
+
+ /**
+ * Parse the value of the given token for embedded expressions, and add any embedded expressions
+ * that are found to the given list of expressions.
+ *
+ * @param expressions the list to which embedded expressions are to be added
+ * @param token the token whose value is to be parsed
+ */
+ void _parseEmbeddedExpressions(List<AngularMoustacheXmlExpression> expressions, ht.Token token) {
+ // prepare Token information
+ String lexeme = token.lexeme;
+ int offset = token.offset;
+ // find expressions between {{ and }}
+ int startIndex = StringUtilities.indexOf2(lexeme, 0, AngularMoustacheXmlExpression.OPENING_DELIMITER_CHAR, AngularMoustacheXmlExpression.OPENING_DELIMITER_CHAR);
+ while (startIndex >= 0) {
+ int endIndex = StringUtilities.indexOf2(lexeme, startIndex + AngularMoustacheXmlExpression.OPENING_DELIMITER_LENGTH, AngularMoustacheXmlExpression.CLOSING_DELIMITER_CHAR, AngularMoustacheXmlExpression.CLOSING_DELIMITER_CHAR);
+ if (endIndex < 0) {
+ // TODO(brianwilkerson) Should we report this error or will it be reported by something else?
+ return;
+ } else if (startIndex + AngularMoustacheXmlExpression.OPENING_DELIMITER_LENGTH < endIndex) {
+ startIndex += AngularMoustacheXmlExpression.OPENING_DELIMITER_LENGTH;
+ AngularExpression expression = _parseAngularExpression(lexeme, startIndex, endIndex, offset);
+ expressions.add(new AngularMoustacheXmlExpression(startIndex, endIndex, expression));
+ }
+ startIndex = StringUtilities.indexOf2(lexeme, endIndex + AngularMoustacheXmlExpression.CLOSING_DELIMITER_LENGTH, AngularMoustacheXmlExpression.OPENING_DELIMITER_CHAR, AngularMoustacheXmlExpression.OPENING_DELIMITER_CHAR);
+ }
+ }
+
+ void _parseEmbeddedExpressionsInAttribute(ht.XmlAttributeNode node) {
+ List<AngularMoustacheXmlExpression> expressions = [];
+ _parseEmbeddedExpressions(expressions, node.valueToken);
+ if (!expressions.isEmpty) {
+ node.expressions = new List.from(expressions);
+ }
+ }
+
+ void _parseEmbeddedExpressionsInTag(ht.XmlTagNode node) {
+ List<AngularMoustacheXmlExpression> expressions = [];
+ ht.Token token = node.attributeEnd;
+ ht.Token endToken = node.endToken;
+ bool inChild = false;
+ while (!identical(token, endToken)) {
+ for (ht.XmlTagNode child in node.tagNodes) {
+ if (identical(token, child.beginToken)) {
+ inChild = true;
+ break;
+ }
+ if (identical(token, child.endToken)) {
+ inChild = false;
+ break;
+ }
+ }
+ if (!inChild && token.type == ht.TokenType.TEXT) {
+ _parseEmbeddedExpressions(expressions, token);
+ }
+ token = token.next;
+ }
+ node.expressions = new List.from(expressions);
+ }
+
+ void _recordDefinedVariable(LocalVariableElementImpl variable) {
+ _definedVariables.add(variable);
+ _functionElement.localVariables = new List.from(_definedVariables);
+ }
+
+ /**
+ * When we inject variable, we give access to the library of its type.
+ */
+ void _recordTypeLibraryInjected(LocalVariableElementImpl variable) {
+ LibraryElement typeLibrary = variable.type.element.library;
+ _injectedLibraries.add(typeLibrary);
+ }
+
+ void _resolveExpressions(List<ht.XmlExpression> expressions) {
+ for (ht.XmlExpression xmlExpression in expressions) {
+ if (xmlExpression is AngularXmlExpression) {
+ AngularXmlExpression angularXmlExpression = xmlExpression;
+ _resolveXmlExpression(angularXmlExpression);
+ }
+ }
+ }
+
+ /**
+ * Resolves Angular specific expressions and elements in the [source].
+ *
+ * @param angularElements the [AngularElement]s accessible in the component's library, not
+ * `null`
+ * @param component the [AngularComponentElement] to resolve template for, maybe
+ * `null` if not a component template
+ */
+ void _resolveInternal(List<AngularElement> angularElements, AngularComponentElement component) {
+ this._angularElements = angularElements;
+ // add built-in processors
+ _processors.add(NgModelProcessor.INSTANCE);
+ // _processors.add(NgRepeatProcessor.INSTANCE);
+ // add element's libraries
+ for (AngularElement angularElement in angularElements) {
+ _injectedLibraries.add(angularElement.library);
+ }
+ // prepare Dart library
+ _createLibraryElement();
+ (_unit.element as HtmlElementImpl).angularCompilationUnit = _unitElement;
+ // prepare Dart resolver
+ _createResolver();
+ // maybe resolving component template
+ if (component != null) {
+ _defineTopVariable_forClassElement(component);
+ for (AngularScopePropertyElement scopeProperty in component.scopeProperties) {
+ _defineTopVariable_forScopeProperty(scopeProperty);
+ }
+ }
+ // add processors
+ for (AngularElement angularElement in angularElements) {
+ NgProcessor processor = _createProcessor(angularElement);
+ if (processor != null) {
+ _processors.add(processor);
+ }
+ }
+ // define formatters
+ for (AngularElement angularElement in angularElements) {
+ if (angularElement is AngularFormatterElement) {
+ _defineTopVariable_forClassElement(angularElement);
+ }
+ }
+ // run this HTML visitor
+ _unit.accept(this);
+ // simulate imports for injects
+ {
+ List<ImportElement> imports = [];
+ for (LibraryElement injectedLibrary in _injectedLibraries) {
+ ImportElementImpl importElement = new ImportElementImpl(-1);
+ importElement.importedLibrary = injectedLibrary;
+ imports.add(importElement);
+ }
+ _libraryElement.imports = new List.from(imports);
+ }
+ }
+
+ void _resolveXmlExpression(AngularXmlExpression angularXmlExpression) {
+ AngularExpression angularExpression = angularXmlExpression.expression;
+ _resolveExpression(angularExpression);
+ }
+
+ List<Token> _splitAtBar(Token token) {
+ List<Token> tokens = [];
+ tokens.add(token);
+ while (token.type != TokenType.EOF) {
+ if (token.type == TokenType.BAR) {
+ tokens.add(token);
+ Token eofToken = new Token(TokenType.EOF, 0);
+ token.previous.setNext(eofToken);
+ }
+ token = token.next;
+ }
+ return tokens;
+ }
+
+ /**
+ * The "ng-model" directive is special, it contributes to the top-level name scope. These models
+ * can be used before actual "ng-model" attribute in HTML. So, we need to define them once we
+ * found [NG_APP] context.
+ */
+ void _visitModelDirectives(ht.XmlTagNode appNode) {
+ appNode.accept(new RecursiveXmlVisitor_AngularHtmlUnitResolver_visitModelDirectives(this));
+ }
+}
+
+class AngularHtmlUnitResolver_FilteringAnalysisErrorListener implements AnalysisErrorListener {
+ final AnalysisErrorListener _listener;
+
+ AngularHtmlUnitResolver_FilteringAnalysisErrorListener(this._listener);
+
+ @override
+ void onError(AnalysisError error) {
+ ErrorCode errorCode = error.errorCode;
+ if (identical(errorCode, StaticWarningCode.UNDEFINED_GETTER) || identical(errorCode, StaticWarningCode.UNDEFINED_IDENTIFIER) || identical(errorCode, StaticTypeWarningCode.UNDEFINED_GETTER)) {
+ return;
+ }
+ _listener.onError(error);
+ }
+}
+
+class AngularHtmlUnitResolver_FoundAppError extends Error {
+}
+
+/**
+ * Implementation of [AngularXmlExpression] for an [AngularExpression] enclosed between
+ * <code>{{</code> and <code>}}</code>.
+ */
+class AngularMoustacheXmlExpression extends AngularXmlExpression {
+ static int OPENING_DELIMITER_CHAR = 0x7B;
+
+ static int CLOSING_DELIMITER_CHAR = 0x7D;
+
+ static String OPENING_DELIMITER = "{{";
+
+ static String CLOSING_DELIMITER = "}}";
+
+ static int OPENING_DELIMITER_LENGTH = OPENING_DELIMITER.length;
+
+ static int CLOSING_DELIMITER_LENGTH = CLOSING_DELIMITER.length;
+
+ /**
+ * The offset of the first character of the opening delimiter.
+ */
+ final int _openingOffset;
+
+ /**
+ * The offset of the first character of the closing delimiter.
+ */
+ final int _closingOffset;
+
+ AngularMoustacheXmlExpression(this._openingOffset, this._closingOffset, AngularExpression expression) : super(expression);
+
+ @override
+ int get end => _closingOffset + CLOSING_DELIMITER_LENGTH;
+
+ @override
+ int get length => _closingOffset + CLOSING_DELIMITER_LENGTH - _openingOffset;
+
+ @override
+ int get offset => _openingOffset;
+}
+
+/**
+ * Implementation of [AngularXmlExpression] for an [AngularExpression] embedded without
+ * any wrapping characters.
+ */
+class AngularRawXmlExpression extends AngularXmlExpression {
+ AngularRawXmlExpression(AngularExpression expression) : super(expression);
+
+ @override
+ int get end => expression.end;
+
+ @override
+ int get length => expression.length;
+
+ @override
+ int get offset => expression.offset;
+}
+
+/**
+ * Abstract Angular specific [XmlExpression].
+ */
+abstract class AngularXmlExpression extends ht.XmlExpression {
+ /**
+ * The expression that is enclosed between the delimiters.
+ */
+ final AngularExpression expression;
+
+ AngularXmlExpression(this.expression);
+
+ @override
+ ht.XmlExpression_Reference getReference(int offset) {
+ // main expression
+ ht.XmlExpression_Reference reference = _getReferenceAtNode(expression.expression, offset);
+ if (reference != null) {
+ return reference;
+ }
+ // formatters
+ for (AngularFormatterNode formatter in expression.formatters) {
+ // formatter name
+ reference = _getReferenceAtNode(formatter.name, offset);
+ if (reference != null) {
+ return reference;
+ }
+ // formatter arguments
+ for (AngularFormatterArgument formatterArgument in formatter.arguments) {
+ reference = _getReferenceAtNode(formatterArgument.expression, offset);
+ if (reference != null) {
+ return reference;
+ }
+ }
+ }
+ return null;
+ }
+
+ /**
+ * If the given [AstNode] has an [Element] at the given offset, then returns
+ * [Reference] with this [Element].
+ */
+ ht.XmlExpression_Reference _getReferenceAtNode(AstNode root, int offset) {
+ AstNode node = new NodeLocator.con1(offset).searchWithin(root);
+ if (node != null) {
+ Element element = ElementLocator.locate(node);
+ return new ht.XmlExpression_Reference(element, node.offset, node.length);
+ }
+ return null;
+ }
+}
+
+/**
+ * Instances of the class `CachePartition` implement a single partition in an LRU cache of
+ * information related to analysis.
+ */
+abstract class CachePartition {
+ /**
+ * A table mapping the sources known to the context to the information known about the source.
+ */
+ HashMap<Source, SourceEntry> _sourceMap = new HashMap<Source, SourceEntry>();
+
+ /**
+ * The maximum number of sources for which AST structures should be kept in the cache.
+ */
+ int _maxCacheSize = 0;
+
+ /**
+ * The policy used to determine which pieces of data to remove from the cache.
+ */
+ final CacheRetentionPolicy _retentionPolicy;
+
+ /**
+ * A list containing the most recently accessed sources with the most recently used at the end of
+ * the list. When more sources are added than the maximum allowed then the least recently used
+ * source will be removed and will have it's cached AST structure flushed.
+ */
+ List<Source> _recentlyUsed;
+
+ /**
+ * Initialize a newly created cache to maintain at most the given number of AST structures in the
+ * cache.
+ *
+ * @param maxCacheSize the maximum number of sources for which AST structures should be kept in
+ * the cache
+ * @param retentionPolicy the policy used to determine which pieces of data to remove from the
+ * cache
+ */
+ CachePartition(int maxCacheSize, this._retentionPolicy) {
+ this._maxCacheSize = maxCacheSize;
+ _recentlyUsed = new List<Source>();
+ }
+
+ /**
+ * Record that the AST associated with the given source was just read from the cache.
+ *
+ * @param source the source whose AST was accessed
+ */
+ void accessedAst(Source source) {
+ if (_recentlyUsed.remove(source)) {
+ _recentlyUsed.add(source);
+ return;
+ }
+ while (_recentlyUsed.length >= _maxCacheSize) {
+ if (!_flushAstFromCache()) {
+ break;
+ }
+ }
+ _recentlyUsed.add(source);
+ }
+
+ /**
+ * Return `true` if the given source is contained in this partition.
+ *
+ * @param source the source being tested
+ * @return `true` if the source is contained in this partition
+ */
+ bool contains(Source source);
+
+ /**
+ * Return the entry associated with the given source.
+ *
+ * @param source the source whose entry is to be returned
+ * @return the entry associated with the given source
+ */
+ SourceEntry get(Source source) => _sourceMap[source];
+
+ /**
+ * Return the number of entries in this partition that have an AST associated with them.
+ *
+ * @return the number of entries in this partition that have an AST associated with them
+ */
+ int get astSize {
+ int astSize = 0;
+ int count = _recentlyUsed.length;
+ for (int i = 0; i < count; i++) {
+ Source source = _recentlyUsed[i];
+ SourceEntry sourceEntry = _sourceMap[source];
+ if (sourceEntry is DartEntry) {
+ if (sourceEntry.anyParsedCompilationUnit != null) {
+ astSize++;
+ }
+ } else if (sourceEntry is HtmlEntry) {
+ if (sourceEntry.anyParsedUnit != null) {
+ astSize++;
+ }
+ }
+ }
+ return astSize;
+ }
+
+ /**
+ * Return a table mapping the sources known to the context to the information known about the
+ * source.
+ *
+ * <b>Note:</b> This method is only visible for use by [AnalysisCache] and should not be
+ * used for any other purpose.
+ *
+ * @return a table mapping the sources known to the context to the information known about the
+ * source
+ */
+ Map<Source, SourceEntry> get map => _sourceMap;
+
+ /**
+ * Return an iterator returning all of the map entries mapping sources to cache entries.
+ *
+ * @return an iterator returning all of the map entries mapping sources to cache entries
+ */
+ MapIterator<Source, SourceEntry> iterator() => new SingleMapIterator<Source, SourceEntry>(_sourceMap);
+
+ /**
+ * Associate the given entry with the given source.
+ *
+ * @param source the source with which the entry is to be associated
+ * @param entry the entry to be associated with the source
+ */
+ void put(Source source, SourceEntry entry) {
+ (entry as SourceEntryImpl).fixExceptionState();
+ _sourceMap[source] = entry;
+ }
+
+ /**
+ * Remove all information related to the given source from this cache.
+ *
+ * @param source the source to be removed
+ */
+ void remove(Source source) {
+ _recentlyUsed.remove(source);
+ _sourceMap.remove(source);
+ }
+
+ /**
+ * Record that the AST associated with the given source was just removed from the cache.
+ *
+ * @param source the source whose AST was removed
+ */
+ void removedAst(Source source) {
+ _recentlyUsed.remove(source);
+ }
+
+ /**
+ * Set the maximum size of the cache to the given size.
+ *
+ * @param size the maximum number of sources for which AST structures should be kept in the cache
+ */
+ void set maxCacheSize(int size) {
+ _maxCacheSize = size;
+ while (_recentlyUsed.length > _maxCacheSize) {
+ if (!_flushAstFromCache()) {
+ break;
+ }
+ }
+ }
+
+ /**
+ * Return the number of sources that are mapped to cache entries.
+ *
+ * @return the number of sources that are mapped to cache entries
+ */
+ int size() => _sourceMap.length;
+
+ /**
+ * Record that the AST associated with the given source was just stored to the cache.
+ *
+ * @param source the source whose AST was stored
+ */
+ void storedAst(Source source) {
+ if (_recentlyUsed.contains(source)) {
+ return;
+ }
+ while (_recentlyUsed.length >= _maxCacheSize) {
+ if (!_flushAstFromCache()) {
+ break;
+ }
+ }
+ _recentlyUsed.add(source);
+ }
+
+ /**
+ * Attempt to flush one AST structure from the cache.
+ *
+ * @return `true` if a structure was flushed
+ */
+ bool _flushAstFromCache() {
+ Source removedSource = _removeAstToFlush();
+ if (removedSource == null) {
+ return false;
+ }
+ SourceEntry sourceEntry = _sourceMap[removedSource];
+ if (sourceEntry is HtmlEntry) {
+ HtmlEntryImpl htmlCopy = sourceEntry.writableCopy;
+ htmlCopy.flushAstStructures();
+ _sourceMap[removedSource] = htmlCopy;
+ } else if (sourceEntry is DartEntry) {
+ DartEntryImpl dartCopy = sourceEntry.writableCopy;
+ dartCopy.flushAstStructures();
+ _sourceMap[removedSource] = dartCopy;
+ }
+ return true;
+ }
+
+ /**
+ * Remove and return one source from the list of recently used sources whose AST structure can be
+ * flushed from the cache. The source that will be returned will be the source that has been
+ * unreferenced for the longest period of time but that is not a priority for analysis.
+ *
+ * @return the source that was removed
+ */
+ Source _removeAstToFlush() {
+ int sourceToRemove = -1;
+ for (int i = 0; i < _recentlyUsed.length; i++) {
+ Source source = _recentlyUsed[i];
+ RetentionPriority priority = _retentionPolicy.getAstPriority(source, _sourceMap[source]);
+ if (priority == RetentionPriority.LOW) {
+ return _recentlyUsed.removeAt(i);
+ } else if (priority == RetentionPriority.MEDIUM && sourceToRemove < 0) {
+ sourceToRemove = i;
+ }
+ }
+ if (sourceToRemove < 0) {
+ // This happens if the retention policy returns a priority of HIGH for all of the sources that
+ // have been recently used. This is the case, for example, when the list of priority sources
+ // is bigger than the current cache size.
+ return null;
+ }
+ return _recentlyUsed.removeAt(sourceToRemove);
+ }
+}
+
+/**
+ * Instances of the class `CacheRetentionPolicy` define the behavior of objects that determine
+ * how important it is for data to be retained in the analysis cache.
+ */
+abstract class CacheRetentionPolicy {
+ /**
+ * Return the priority of retaining the AST structure for the given source.
+ *
+ * @param source the source whose AST structure is being considered for removal
+ * @param sourceEntry the entry representing the source
+ * @return the priority of retaining the AST structure for the given source
+ */
+ RetentionPriority getAstPriority(Source source, SourceEntry sourceEntry);
+}
+
+/**
+ * The enumeration `CacheState` defines the possible states of cached data.
+ */
+class CacheState extends Enum<CacheState> {
+ /**
+ * The data is not in the cache and the last time an attempt was made to compute the data an
+ * exception occurred, making it pointless to attempt.
+ *
+ * Valid Transitions:
+ * * [INVALID] if a source was modified that might cause the data to be computable
+ */
+ static const CacheState ERROR = const CacheState('ERROR', 0);
+
+ /**
+ * The data is not in the cache because it was flushed from the cache in order to control memory
+ * usage. If the data is recomputed, results do not need to be reported.
+ *
+ * Valid Transitions:
+ * * [IN_PROCESS] if the data is being recomputed
+ * * [INVALID] if a source was modified that causes the data to need to be recomputed
+ */
+ static const CacheState FLUSHED = const CacheState('FLUSHED', 1);
+
+ /**
+ * The data might or might not be in the cache but is in the process of being recomputed.
+ *
+ * Valid Transitions:
+ * * [ERROR] if an exception occurred while trying to compute the data
+ * * [VALID] if the data was successfully computed and stored in the cache
+ */
+ static const CacheState IN_PROCESS = const CacheState('IN_PROCESS', 2);
+
+ /**
+ * The data is not in the cache and needs to be recomputed so that results can be reported.
+ *
+ * Valid Transitions:
+ * * [IN_PROCESS] if an attempt is being made to recompute the data
+ */
+ static const CacheState INVALID = const CacheState('INVALID', 3);
+
+ /**
+ * The data is in the cache and up-to-date.
+ *
+ * Valid Transitions:
+ * * [FLUSHED] if the data is removed in order to manage memory usage
+ * * [INVALID] if a source was modified in such a way as to invalidate the previous data
+ */
+ static const CacheState VALID = const CacheState('VALID', 4);
+
+ static const List<CacheState> values = const [ERROR, FLUSHED, IN_PROCESS, INVALID, VALID];
+
+ const CacheState(String name, int ordinal) : super(name, ordinal);
+}
+
+/**
+ * The interface `ChangeNotice` defines the behavior of objects that represent a change to the
+ * analysis results associated with a given source.
+ */
+abstract class ChangeNotice implements AnalysisErrorInfo {
+ /**
+ * Return the fully resolved AST that changed as a result of the analysis, or `null` if the
+ * AST was not changed.
+ *
+ * @return the fully resolved AST that changed as a result of the analysis
+ */
+ CompilationUnit get compilationUnit;
+
+ /**
+ * Return the fully resolved HTML that changed as a result of the analysis, or `null` if the
+ * HTML was not changed.
+ *
+ * @return the fully resolved HTML that changed as a result of the analysis
+ */
+ ht.HtmlUnit get htmlUnit;
+
+ /**
+ * Return the source for which the result is being reported.
+ *
+ * @return the source for which the result is being reported
+ */
+ Source get source;
+}
+
+/**
+ * Instances of the class `ChangeNoticeImpl` represent a change to the analysis results
+ * associated with a given source.
+ */
+class ChangeNoticeImpl implements ChangeNotice {
+ /**
+ * The source for which the result is being reported.
+ */
+ final Source source;
+
+ /**
+ * The fully resolved AST that changed as a result of the analysis, or `null` if the AST was
+ * not changed.
+ */
+ CompilationUnit compilationUnit;
+
+ /**
+ * The fully resolved HTML that changed as a result of the analysis, or `null` if the HTML
+ * was not changed.
+ */
+ ht.HtmlUnit htmlUnit;
+
+ /**
+ * The errors that changed as a result of the analysis, or `null` if errors were not
+ * changed.
+ */
+ List<AnalysisError> _errors;
+
+ /**
+ * The line information associated with the source, or `null` if errors were not changed.
+ */
+ LineInfo _lineInfo;
+
+ /**
+ * An empty array of change notices.
+ */
+ static List<ChangeNoticeImpl> EMPTY_ARRAY = new List<ChangeNoticeImpl>(0);
+
+ /**
+ * Initialize a newly created notice associated with the given source.
+ *
+ * @param source the source for which the change is being reported
+ */
+ ChangeNoticeImpl(this.source);
+
+ @override
+ List<AnalysisError> get errors => _errors;
+
+ @override
+ LineInfo get lineInfo => _lineInfo;
+
+ /**
+ * Set the errors that changed as a result of the analysis to the given errors and set the line
+ * information to the given line information.
+ *
+ * @param errors the errors that changed as a result of the analysis
+ * @param lineInfo the line information associated with the source
+ */
+ void setErrors(List<AnalysisError> errors, LineInfo lineInfo) {
+ this._errors = errors;
+ this._lineInfo = lineInfo;
+ if (lineInfo == null) {
+ AnalysisEngine.instance.logger.logInformation2("No line info: ${source}", new JavaException());
+ }
+ }
+
+ @override
+ String toString() => "Changes for ${source.fullName}";
+}
+
+/**
+ * Instances of the class `ChangeSet` indicate which sources have been added, changed,
+ * removed, or deleted. In the case of a changed source, there are multiple ways of indicating the
+ * nature of the change.
+ *
+ * No source should be added to the change set more than once, either with the same or a different
+ * kind of change. It does not make sense, for example, for a source to be both added and removed,
+ * and it is redundant for a source to be marked as changed in its entirety and changed in some
+ * specific range.
+ */
+class ChangeSet {
+ /**
+ * A list containing the sources that have been added.
+ */
+ final List<Source> addedSources = new List<Source>();
+
+ /**
+ * A list containing the sources that have been changed.
+ */
+ final List<Source> changedSources = new List<Source>();
+
+ /**
+ * A table mapping the sources whose content has been changed to the current content of those
+ * sources.
+ */
+ HashMap<Source, String> _changedContent = new HashMap<Source, String>();
+
+ /**
+ * A table mapping the sources whose content has been changed within a single range to the current
+ * content of those sources and information about the affected range.
+ */
+ final HashMap<Source, ChangeSet_ContentChange> changedRanges = new HashMap<Source, ChangeSet_ContentChange>();
+
+ /**
+ * A list containing the sources that have been removed.
+ */
+ final List<Source> removedSources = new List<Source>();
+
+ /**
+ * A list containing the source containers specifying additional sources that have been removed.
+ */
+ final List<SourceContainer> removedContainers = new List<SourceContainer>();
+
+ /**
+ * A list containing the sources that have been deleted.
+ */
+ final List<Source> deletedSources = new List<Source>();
+
+ /**
+ * Record that the specified source has been added and that its content is the default contents of
+ * the source.
+ *
+ * @param source the source that was added
+ */
+ void addedSource(Source source) {
+ addedSources.add(source);
+ }
+
+ /**
+ * Record that the specified source has been changed and that its content is the given contents.
+ *
+ * @param source the source that was changed
+ * @param contents the new contents of the source, or `null` if the default contents of the
+ * source are to be used
+ */
+ void changedContent(Source source, String contents) {
+ _changedContent[source] = contents;
+ }
+
+ /**
+ * Record that the specified source has been changed and that its content is the given contents.
+ *
+ * @param source the source that was changed
+ * @param contents the new contents of the source
+ * @param offset the offset into the current contents
+ * @param oldLength the number of characters in the original contents that were replaced
+ * @param newLength the number of characters in the replacement text
+ */
+ void changedRange(Source source, String contents, int offset, int oldLength, int newLength) {
+ changedRanges[source] = new ChangeSet_ContentChange(contents, offset, oldLength, newLength);
+ }
+
+ /**
+ * Record that the specified source has been changed. If the content of the source was previously
+ * overridden, this has no effect (the content remains overridden). To cancel (or change) the
+ * override, use [changedContent] instead.
+ *
+ * @param source the source that was changed
+ */
+ void changedSource(Source source) {
+ changedSources.add(source);
+ }
+
+ /**
+ * Record that the specified source has been deleted.
+ *
+ * @param source the source that was deleted
+ */
+ void deletedSource(Source source) {
+ deletedSources.add(source);
+ }
+
+ /**
+ * Return a table mapping the sources whose content has been changed to the current content of
+ * those sources.
+ *
+ * @return a table mapping the sources whose content has been changed to the current content of
+ * those sources
+ */
+ Map<Source, String> get changedContents => _changedContent;
+
+ /**
+ * Return `true` if this change set does not contain any changes.
+ *
+ * @return `true` if this change set does not contain any changes
+ */
+ bool get isEmpty => addedSources.isEmpty && changedSources.isEmpty && _changedContent.isEmpty && changedRanges.isEmpty && removedSources.isEmpty && removedContainers.isEmpty && deletedSources.isEmpty;
+
+ /**
+ * Record that the specified source container has been removed.
+ *
+ * @param container the source container that was removed
+ */
+ void removedContainer(SourceContainer container) {
+ if (container != null) {
+ removedContainers.add(container);
+ }
+ }
+
+ /**
+ * Record that the specified source has been removed.
+ *
+ * @param source the source that was removed
+ */
+ void removedSource(Source source) {
+ if (source != null) {
+ removedSources.add(source);
+ }
+ }
+
+ @override
+ String toString() {
+ JavaStringBuilder builder = new JavaStringBuilder();
+ bool needsSeparator = _appendSources(builder, addedSources, false, "addedSources");
+ needsSeparator = _appendSources(builder, changedSources, needsSeparator, "changedSources");
+ needsSeparator = _appendSources2(builder, _changedContent, needsSeparator, "changedContent");
+ needsSeparator = _appendSources2(builder, changedRanges, needsSeparator, "changedRanges");
+ needsSeparator = _appendSources(builder, deletedSources, needsSeparator, "deletedSources");
+ needsSeparator = _appendSources(builder, removedSources, needsSeparator, "removedSources");
+ int count = removedContainers.length;
+ if (count > 0) {
+ if (removedSources.isEmpty) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append("removed: from ");
+ builder.append(count);
+ builder.append(" containers");
+ } else {
+ builder.append(", and more from ");
+ builder.append(count);
+ builder.append(" containers");
+ }
+ }
+ return builder.toString();
+ }
+
+ /**
+ * Append the given sources to the given builder, prefixed with the given label and possibly a
+ * separator.
+ *
+ * @param builder the builder to which the sources are to be appended
+ * @param sources the sources to be appended
+ * @param needsSeparator `true` if a separator is needed before the label
+ * @param label the label used to prefix the sources
+ * @return `true` if future lists of sources will need a separator
+ */
+ bool _appendSources(JavaStringBuilder builder, List<Source> sources, bool needsSeparator, String label) {
+ if (sources.isEmpty) {
+ return needsSeparator;
+ }
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append(label);
+ String prefix = " ";
+ for (Source source in sources) {
+ builder.append(prefix);
+ builder.append(source.fullName);
+ prefix = ", ";
+ }
+ return true;
+ }
+
+ /**
+ * Append the given sources to the given builder, prefixed with the given label and possibly a
+ * separator.
+ *
+ * @param builder the builder to which the sources are to be appended
+ * @param sources the sources to be appended
+ * @param needsSeparator `true` if a separator is needed before the label
+ * @param label the label used to prefix the sources
+ * @return `true` if future lists of sources will need a separator
+ */
+ bool _appendSources2(JavaStringBuilder builder, HashMap<Source, dynamic> sources, bool needsSeparator, String label) {
+ if (sources.isEmpty) {
+ return needsSeparator;
+ }
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append(label);
+ String prefix = " ";
+ for (Source source in sources.keys.toSet()) {
+ builder.append(prefix);
+ builder.append(source.fullName);
+ prefix = ", ";
+ }
+ return true;
+ }
+}
+
+/**
+ * Instances of the class `ContentChange` represent a change to the content of a source.
+ */
+class ChangeSet_ContentChange {
+ /**
+ * The new contents of the source.
+ */
+ final String contents;
+
+ /**
+ * The offset into the current contents.
+ */
+ final int offset;
+
+ /**
+ * The number of characters in the original contents that were replaced
+ */
+ final int oldLength;
+
+ /**
+ * The number of characters in the replacement text.
+ */
+ final int newLength;
+
+ /**
+ * Initialize a newly created change object to represent a change to the content of a source.
+ *
+ * @param contents the new contents of the source
+ * @param offset the offset into the current contents
+ * @param oldLength the number of characters in the original contents that were replaced
+ * @param newLength the number of characters in the replacement text
+ */
+ ChangeSet_ContentChange(this.contents, this.offset, this.oldLength, this.newLength);
+}
+
+/**
+ * Instances of the class `LibraryPair` hold a library and a list of the (source, entry)
+ * pairs for compilation units in the library.
+ */
+class CycleBuilder_LibraryPair {
+ /**
+ * The library containing the compilation units.
+ */
+ ResolvableLibrary library;
+
+ /**
+ * The (source, entry) pairs representing the compilation units in the library.
+ */
+ List<CycleBuilder_SourceEntryPair> entryPairs;
+
+ /**
+ * Initialize a newly created pair.
+ *
+ * @param library the library containing the compilation units
+ * @param entryPairs the (source, entry) pairs representing the compilation units in the
+ * library
+ */
+ CycleBuilder_LibraryPair(ResolvableLibrary library, List<CycleBuilder_SourceEntryPair> entryPairs) {
+ this.library = library;
+ this.entryPairs = entryPairs;
+ }
+}
+
+/**
+ * Instances of the class `SourceEntryPair` hold a source and the cache entry associated
+ * with that source. They are used to reduce the number of times an entry must be looked up in
+ * the [cache].
+ */
+class CycleBuilder_SourceEntryPair {
+ /**
+ * The source associated with the entry.
+ */
+ Source source;
+
+ /**
+ * The entry associated with the source.
+ */
+ DartEntry entry;
+
+ /**
+ * Initialize a newly created pair.
+ *
+ * @param source the source associated with the entry
+ * @param entry the entry associated with the source
+ */
+ CycleBuilder_SourceEntryPair(Source source, DartEntry entry) {
+ this.source = source;
+ this.entry = entry;
+ }
+}
+
+/**
+ * The interface `DartEntry` defines the behavior of objects that maintain the information
+ * cached by an analysis context about an individual Dart file.
+ */
+abstract class DartEntry implements SourceEntry {
+ /**
+ * The data descriptor representing the errors reported during Angular resolution.
+ */
+ static final DataDescriptor<List<AnalysisError>> ANGULAR_ERRORS = new DataDescriptor<List<AnalysisError>>("DartEntry.ANGULAR_ERRORS");
+
+ /**
+ * The data descriptor representing the list of libraries that contain this compilation unit.
+ */
+ static final DataDescriptor<List<Source>> CONTAINING_LIBRARIES = new DataDescriptor<List<Source>>("DartEntry.CONTAINING_LIBRARIES");
+
+ /**
+ * The data descriptor representing the library element for the library. This data is only
+ * available for Dart files that are the defining compilation unit of a library.
+ */
+ static final DataDescriptor<LibraryElement> ELEMENT = new DataDescriptor<LibraryElement>("DartEntry.ELEMENT");
+
+ /**
+ * The data descriptor representing the list of exported libraries. This data is only available
+ * for Dart files that are the defining compilation unit of a library.
+ */
+ static final DataDescriptor<List<Source>> EXPORTED_LIBRARIES = new DataDescriptor<List<Source>>("DartEntry.EXPORTED_LIBRARIES");
+
+ /**
+ * The data descriptor representing the hints resulting from auditing the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> HINTS = new DataDescriptor<List<AnalysisError>>("DartEntry.HINTS");
+
+ /**
+ * The data descriptor representing the list of imported libraries. This data is only available
+ * for Dart files that are the defining compilation unit of a library.
+ */
+ static final DataDescriptor<List<Source>> IMPORTED_LIBRARIES = new DataDescriptor<List<Source>>("DartEntry.IMPORTED_LIBRARIES");
+
+ /**
+ * The data descriptor representing the list of included parts. This data is only available for
+ * Dart files that are the defining compilation unit of a library.
+ */
+ static final DataDescriptor<List<Source>> INCLUDED_PARTS = new DataDescriptor<List<Source>>("DartEntry.INCLUDED_PARTS");
+
+ /**
+ * The data descriptor representing the client flag. This data is only available for Dart files
+ * that are the defining compilation unit of a library.
+ */
+ static final DataDescriptor<bool> IS_CLIENT = new DataDescriptor<bool>("DartEntry.IS_CLIENT");
+
+ /**
+ * The data descriptor representing the launchable flag. This data is only available for Dart
+ * files that are the defining compilation unit of a library.
+ */
+ static final DataDescriptor<bool> IS_LAUNCHABLE = new DataDescriptor<bool>("DartEntry.IS_LAUNCHABLE");
+
+ /**
+ * The data descriptor representing the errors resulting from parsing the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> PARSE_ERRORS = new DataDescriptor<List<AnalysisError>>("DartEntry.PARSE_ERRORS");
+
+ /**
+ * The data descriptor representing the parsed AST structure.
+ */
+ static final DataDescriptor<CompilationUnit> PARSED_UNIT = new DataDescriptor<CompilationUnit>("DartEntry.PARSED_UNIT");
+
+ /**
+ * The data descriptor representing the public namespace of the library. This data is only
+ * available for Dart files that are the defining compilation unit of a library.
+ */
+ static final DataDescriptor<Namespace> PUBLIC_NAMESPACE = new DataDescriptor<Namespace>("DartEntry.PUBLIC_NAMESPACE");
+
+ /**
+ * The data descriptor representing the errors resulting from resolving the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> RESOLUTION_ERRORS = new DataDescriptor<List<AnalysisError>>("DartEntry.RESOLUTION_ERRORS");
+
+ /**
+ * The data descriptor representing the resolved AST structure.
+ */
+ static final DataDescriptor<CompilationUnit> RESOLVED_UNIT = new DataDescriptor<CompilationUnit>("DartEntry.RESOLVED_UNIT");
+
+ /**
+ * The data descriptor representing the token stream.
+ */
+ static final DataDescriptor<List<AnalysisError>> SCAN_ERRORS = new DataDescriptor<List<AnalysisError>>("DartEntry.SCAN_ERRORS");
+
+ /**
+ * The data descriptor representing the source kind.
+ */
+ static final DataDescriptor<SourceKind> SOURCE_KIND = new DataDescriptor<SourceKind>("DartEntry.SOURCE_KIND");
+
+ /**
+ * The data descriptor representing the token stream.
+ */
+ static final DataDescriptor<Token> TOKEN_STREAM = new DataDescriptor<Token>("DartEntry.TOKEN_STREAM");
+
+ /**
+ * The data descriptor representing the errors resulting from verifying the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> VERIFICATION_ERRORS = new DataDescriptor<List<AnalysisError>>("DartEntry.VERIFICATION_ERRORS");
+
+ /**
+ * Return all of the errors associated with the compilation unit that are currently cached.
+ *
+ * @return all of the errors associated with the compilation unit
+ */
+ List<AnalysisError> get allErrors;
+
+ /**
+ * Return a valid parsed compilation unit, either an unresolved AST structure or the result of
+ * resolving the AST structure in the context of some library, or `null` if there is no
+ * parsed compilation unit available.
+ *
+ * @return a valid parsed compilation unit
+ */
+ CompilationUnit get anyParsedCompilationUnit;
+
+ /**
+ * Return the result of resolving the compilation unit as part of any library, or `null` if
+ * there is no cached resolved compilation unit.
+ *
+ * @return any resolved compilation unit
+ */
+ CompilationUnit get anyResolvedCompilationUnit;
+
+ /**
+ * Return the state of the data represented by the given descriptor in the context of the given
+ * library.
+ *
+ * @param descriptor the descriptor representing the data whose state is to be returned
+ * @param librarySource the source of the defining compilation unit of the library that is the
+ * context for the data
+ * @return the value of the data represented by the given descriptor and library
+ */
+ CacheState getStateInLibrary(DataDescriptor descriptor, Source librarySource);
+
+ /**
+ * Return the value of the data represented by the given descriptor in the context of the given
+ * library, or `null` if the data represented by the descriptor is not in the cache.
+ *
+ * @param descriptor the descriptor representing which data is to be returned
+ * @param librarySource the source of the defining compilation unit of the library that is the
+ * context for the data
+ * @return the value of the data represented by the given descriptor and library
+ */
+ Object getValueInLibrary(DataDescriptor descriptor, Source librarySource);
+
+ @override
+ DartEntryImpl get writableCopy;
+
+ /**
+ * Return `true` if the data represented by the given descriptor is marked as being invalid.
+ * If the descriptor represents library-specific data then this method will return `true` if
+ * the data associated with any library it marked as invalid.
+ *
+ * @param descriptor the descriptor representing which data is being tested
+ * @return `true` if the data is marked as being invalid
+ */
+ bool hasInvalidData(DataDescriptor descriptor);
+
+ /**
+ * Return `true` if this entry has an AST structure that can be resolved (even if it needs
+ * to be copied).
+ *
+ * @return `true` if the method [DartEntryImpl#getResolvableCompilationUnit] will
+ * return a non-`null` result
+ */
+ bool get hasResolvableCompilationUnit;
+
+ /**
+ * Return `true` if this data is safe to use in refactoring.
+ */
+ bool get isRefactoringSafe;
+}
+
+/**
+ * Instances of the class `DartEntryImpl` implement a [DartEntry].
+ */
+class DartEntryImpl extends SourceEntryImpl implements DartEntry {
+ /**
+ * The state of the cached token stream.
+ */
+ CacheState _tokenStreamState = CacheState.INVALID;
+
+ /**
+ * The head of the token stream, or `null` if the token stream is not currently cached.
+ */
+ Token _tokenStream;
+
+ /**
+ * The state of the cached scan errors.
+ */
+ CacheState _scanErrorsState = CacheState.INVALID;
+
+ /**
+ * The errors produced while scanning the compilation unit, or an empty array if the errors are
+ * not currently cached.
+ */
+ List<AnalysisError> _scanErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached source kind.
+ */
+ CacheState _sourceKindState = CacheState.INVALID;
+
+ /**
+ * The kind of this source.
+ */
+ SourceKind _sourceKind = SourceKind.UNKNOWN;
+
+ /**
+ * The state of the cached parsed compilation unit.
+ */
+ CacheState _parsedUnitState = CacheState.INVALID;
+
+ /**
+ * A flag indicating whether the parsed AST structure has been accessed since it was set. This is
+ * used to determine whether the structure needs to be copied before it is resolved.
+ */
+ bool _parsedUnitAccessed = false;
+
+ /**
+ * The parsed compilation unit, or `null` if the parsed compilation unit is not currently
+ * cached.
+ */
+ CompilationUnit _parsedUnit;
+
+ /**
+ * The state of the cached parse errors.
+ */
+ CacheState _parseErrorsState = CacheState.INVALID;
+
+ /**
+ * The errors produced while parsing the compilation unit, or an empty array if the errors are not
+ * currently cached.
+ */
+ List<AnalysisError> _parseErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached list of imported libraries.
+ */
+ CacheState _importedLibrariesState = CacheState.INVALID;
+
+ /**
+ * The list of libraries imported by the library, or an empty array if the list is not currently
+ * cached. The list will be empty if the Dart file is a part rather than a library.
+ */
+ List<Source> _importedLibraries = Source.EMPTY_ARRAY;
+
+ /**
+ * The state of the cached list of exported libraries.
+ */
+ CacheState _exportedLibrariesState = CacheState.INVALID;
+
+ /**
+ * The list of libraries exported by the library, or an empty array if the list is not currently
+ * cached. The list will be empty if the Dart file is a part rather than a library.
+ */
+ List<Source> _exportedLibraries = Source.EMPTY_ARRAY;
+
+ /**
+ * The state of the cached list of included parts.
+ */
+ CacheState _includedPartsState = CacheState.INVALID;
+
+ /**
+ * The list of parts included in the library, or an empty array if the list is not currently
+ * cached. The list will be empty if the Dart file is a part rather than a library.
+ */
+ List<Source> _includedParts = Source.EMPTY_ARRAY;
+
+ /**
+ * The list of libraries that contain this compilation unit. The list will be empty if there are
+ * no known libraries that contain this compilation unit.
+ */
+ List<Source> _containingLibraries = new List<Source>();
+
+ /**
+ * The information known as a result of resolving this compilation unit as part of the library
+ * that contains this unit. This field will never be `null`.
+ */
+ DartEntryImpl_ResolutionState _resolutionState = new DartEntryImpl_ResolutionState();
+
+ /**
+ * The state of the cached library element.
+ */
+ CacheState _elementState = CacheState.INVALID;
+
+ /**
+ * The element representing the library, or `null` if the element is not currently cached.
+ */
+ LibraryElement _element;
+
+ /**
+ * The state of the cached public namespace.
+ */
+ CacheState _publicNamespaceState = CacheState.INVALID;
+
+ /**
+ * The public namespace of the library, or `null` if the namespace is not currently cached.
+ */
+ Namespace _publicNamespace;
+
+ /**
+ * The state of the cached client/ server flag.
+ */
+ CacheState _clientServerState = CacheState.INVALID;
+
+ /**
+ * The state of the cached launchable flag.
+ */
+ CacheState _launchableState = CacheState.INVALID;
+
+ /**
+ * The error produced while performing Angular resolution, or an empty array if there are no
+ * errors if the error are not currently cached.
+ */
+ List<AnalysisError> _angularErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The index of the flag indicating whether this library is launchable (whether the file has a
+ * main method).
+ */
+ static int _LAUNCHABLE_INDEX = 1;
+
+ /**
+ * The index of the flag indicating whether the library is client code (whether the library
+ * depends on the html library). If the library is not "client code", then it is referred to as
+ * "server code".
+ */
+ static int _CLIENT_CODE_INDEX = 2;
+
+ /**
+ * Add the given library to the list of libraries that contain this part. This method should only
+ * be invoked on entries that represent a part.
+ *
+ * @param librarySource the source of the library to be added
+ */
+ void addContainingLibrary(Source librarySource) {
+ _containingLibraries.add(librarySource);
+ }
+
+ /**
+ * Flush any AST structures being maintained by this entry.
+ */
+ void flushAstStructures() {
+ if (_tokenStreamState == CacheState.VALID) {
+ _tokenStreamState = CacheState.FLUSHED;
+ _tokenStream = null;
+ }
+ if (_parsedUnitState == CacheState.VALID) {
+ _parsedUnitState = CacheState.FLUSHED;
+ _parsedUnitAccessed = false;
+ _parsedUnit = null;
+ }
+ _resolutionState.flushAstStructures();
+ }
+
+ @override
+ List<AnalysisError> get allErrors {
+ List<AnalysisError> errors = new List<AnalysisError>();
+ ListUtilities.addAll(errors, _scanErrors);
+ ListUtilities.addAll(errors, _parseErrors);
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ ListUtilities.addAll(errors, state._buildElementErrors);
+ ListUtilities.addAll(errors, state._resolutionErrors);
+ ListUtilities.addAll(errors, state._verificationErrors);
+ ListUtilities.addAll(errors, state._hints);
+ state = state._nextState;
+ }
+ ListUtilities.addAll(errors, _angularErrors);
+ if (errors.length == 0) {
+ return AnalysisError.NO_ERRORS;
+ }
+ return new List.from(errors);
+ }
+
+ @override
+ CompilationUnit get anyParsedCompilationUnit {
+ if (_parsedUnitState == CacheState.VALID) {
+ _parsedUnitAccessed = true;
+ return _parsedUnit;
+ }
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (state._builtUnitState == CacheState.VALID) {
+ return state._builtUnit;
+ }
+ state = state._nextState;
+ }
+ ;
+ return anyResolvedCompilationUnit;
+ }
+
+ @override
+ CompilationUnit get anyResolvedCompilationUnit {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (state._resolvedUnitState == CacheState.VALID) {
+ return state._resolvedUnit;
+ }
+ state = state._nextState;
+ }
+ ;
+ return null;
+ }
+
+ /**
+ * Return a list containing the libraries that are known to contain this part.
+ *
+ * @return a list containing the libraries that are known to contain this part
+ */
+ List<Source> get containingLibraries => _containingLibraries;
+
+ @override
+ SourceKind get kind => _sourceKind;
+
+ /**
+ * Answer an array of library sources containing the receiver's source.
+ */
+ List<Source> get librariesContaining {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ List<Source> result = new List<Source>();
+ while (state != null) {
+ if (state._librarySource != null) {
+ result.add(state._librarySource);
+ }
+ state = state._nextState;
+ }
+ return new List.from(result);
+ }
+
+ /**
+ * Return a compilation unit that has not been accessed by any other client and can therefore
+ * safely be modified by the reconciler, or `null` if the source has not been parsed.
+ *
+ * @return a compilation unit that can be modified by the reconciler
+ */
+ CompilationUnit get resolvableCompilationUnit {
+ if (_parsedUnitState == CacheState.VALID) {
+ if (_parsedUnitAccessed) {
+ return _parsedUnit.accept(new AstCloner()) as CompilationUnit;
+ }
+ CompilationUnit unit = _parsedUnit;
+ _parsedUnitState = CacheState.FLUSHED;
+ _parsedUnitAccessed = false;
+ _parsedUnit = null;
+ return unit;
+ }
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (state._builtUnitState == CacheState.VALID) {
+ // TODO(brianwilkerson) We're cloning the structure to remove any previous resolution data,
+ // but I'm not sure that's necessary.
+ return state._builtUnit.accept(new AstCloner()) as CompilationUnit;
+ }
+ if (state._resolvedUnitState == CacheState.VALID) {
+ return state._resolvedUnit.accept(new AstCloner()) as CompilationUnit;
+ }
+ state = state._nextState;
+ }
+ ;
+ return null;
+ }
+
+ @override
+ CacheState getState(DataDescriptor descriptor) {
+ if (identical(descriptor, DartEntry.ELEMENT)) {
+ return _elementState;
+ } else if (identical(descriptor, DartEntry.EXPORTED_LIBRARIES)) {
+ return _exportedLibrariesState;
+ } else if (identical(descriptor, DartEntry.IMPORTED_LIBRARIES)) {
+ return _importedLibrariesState;
+ } else if (identical(descriptor, DartEntry.INCLUDED_PARTS)) {
+ return _includedPartsState;
+ } else if (identical(descriptor, DartEntry.IS_CLIENT)) {
+ return _clientServerState;
+ } else if (identical(descriptor, DartEntry.IS_LAUNCHABLE)) {
+ return _launchableState;
+ } else if (identical(descriptor, DartEntry.PARSE_ERRORS)) {
+ return _parseErrorsState;
+ } else if (identical(descriptor, DartEntry.PARSED_UNIT)) {
+ return _parsedUnitState;
+ } else if (identical(descriptor, DartEntry.PUBLIC_NAMESPACE)) {
+ return _publicNamespaceState;
+ } else if (identical(descriptor, DartEntry.SCAN_ERRORS)) {
+ return _scanErrorsState;
+ } else if (identical(descriptor, DartEntry.SOURCE_KIND)) {
+ return _sourceKindState;
+ } else if (identical(descriptor, DartEntry.TOKEN_STREAM)) {
+ return _tokenStreamState;
+ } else {
+ return super.getState(descriptor);
+ }
+ }
+
+ @override
+ CacheState getStateInLibrary(DataDescriptor descriptor, Source librarySource) {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (librarySource == state._librarySource) {
+ if (identical(descriptor, DartEntry.RESOLUTION_ERRORS)) {
+ return state._resolutionErrorsState;
+ } else if (identical(descriptor, DartEntry.RESOLVED_UNIT)) {
+ return state._resolvedUnitState;
+ } else if (identical(descriptor, DartEntry.VERIFICATION_ERRORS)) {
+ return state._verificationErrorsState;
+ } else if (identical(descriptor, DartEntry.HINTS)) {
+ return state._hintsState;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+ state = state._nextState;
+ }
+ ;
+ if (identical(descriptor, DartEntry.RESOLUTION_ERRORS) || identical(descriptor, DartEntry.RESOLVED_UNIT) || identical(descriptor, DartEntry.VERIFICATION_ERRORS) || identical(descriptor, DartEntry.HINTS)) {
+ return CacheState.INVALID;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+
+ @override
+ Object getValue(DataDescriptor descriptor) {
+ if (identical(descriptor, DartEntry.ANGULAR_ERRORS)) {
+ return _angularErrors;
+ } else if (identical(descriptor, DartEntry.CONTAINING_LIBRARIES)) {
+ return new List.from(_containingLibraries);
+ } else if (identical(descriptor, DartEntry.ELEMENT)) {
+ return _element;
+ } else if (identical(descriptor, DartEntry.EXPORTED_LIBRARIES)) {
+ return _exportedLibraries;
+ } else if (identical(descriptor, DartEntry.IMPORTED_LIBRARIES)) {
+ return _importedLibraries;
+ } else if (identical(descriptor, DartEntry.INCLUDED_PARTS)) {
+ return _includedParts;
+ } else if (identical(descriptor, DartEntry.IS_CLIENT)) {
+ return getFlag(_CLIENT_CODE_INDEX);
+ } else if (identical(descriptor, DartEntry.IS_LAUNCHABLE)) {
+ return getFlag(_LAUNCHABLE_INDEX);
+ } else if (identical(descriptor, DartEntry.PARSE_ERRORS)) {
+ return _parseErrors;
+ } else if (identical(descriptor, DartEntry.PARSED_UNIT)) {
+ _parsedUnitAccessed = true;
+ return _parsedUnit;
+ } else if (identical(descriptor, DartEntry.PUBLIC_NAMESPACE)) {
+ return _publicNamespace;
+ } else if (identical(descriptor, DartEntry.SCAN_ERRORS)) {
+ return _scanErrors;
+ } else if (identical(descriptor, DartEntry.SOURCE_KIND)) {
+ return _sourceKind;
+ } else if (identical(descriptor, DartEntry.TOKEN_STREAM)) {
+ return _tokenStream;
+ }
+ return super.getValue(descriptor);
+ }
+
+ @override
+ Object getValueInLibrary(DataDescriptor descriptor, Source librarySource) {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (librarySource == state._librarySource) {
+ if (identical(descriptor, DartEntry.RESOLUTION_ERRORS)) {
+ return state._resolutionErrors;
+ } else if (identical(descriptor, DartEntry.RESOLVED_UNIT)) {
+ return state._resolvedUnit;
+ } else if (identical(descriptor, DartEntry.VERIFICATION_ERRORS)) {
+ return state._verificationErrors;
+ } else if (identical(descriptor, DartEntry.HINTS)) {
+ return state._hints;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+ state = state._nextState;
+ }
+ ;
+ if (identical(descriptor, DartEntry.RESOLUTION_ERRORS) || identical(descriptor, DartEntry.VERIFICATION_ERRORS) || identical(descriptor, DartEntry.HINTS)) {
+ return AnalysisError.NO_ERRORS;
+ } else if (identical(descriptor, DartEntry.RESOLVED_UNIT)) {
+ return null;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+
+ @override
+ DartEntryImpl get writableCopy {
+ DartEntryImpl copy = new DartEntryImpl();
+ copy.copyFrom(this);
+ return copy;
+ }
+
+ @override
+ bool hasInvalidData(DataDescriptor descriptor) {
+ if (identical(descriptor, DartEntry.ELEMENT)) {
+ return _elementState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.EXPORTED_LIBRARIES)) {
+ return _exportedLibrariesState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.IMPORTED_LIBRARIES)) {
+ return _importedLibrariesState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.INCLUDED_PARTS)) {
+ return _includedPartsState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.IS_CLIENT)) {
+ return _clientServerState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.IS_LAUNCHABLE)) {
+ return _launchableState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.PARSE_ERRORS)) {
+ return _parseErrorsState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.PARSED_UNIT)) {
+ return _parsedUnitState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.PUBLIC_NAMESPACE)) {
+ return _publicNamespaceState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.SCAN_ERRORS)) {
+ return _scanErrorsState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.SOURCE_KIND)) {
+ return _sourceKindState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.TOKEN_STREAM)) {
+ return _tokenStreamState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.RESOLUTION_ERRORS) || identical(descriptor, DartEntry.RESOLVED_UNIT) || identical(descriptor, DartEntry.VERIFICATION_ERRORS) || identical(descriptor, DartEntry.HINTS)) {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (identical(descriptor, DartEntry.RESOLUTION_ERRORS)) {
+ return state._resolutionErrorsState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.RESOLVED_UNIT)) {
+ return state._resolvedUnitState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.VERIFICATION_ERRORS)) {
+ return state._verificationErrorsState == CacheState.INVALID;
+ } else if (identical(descriptor, DartEntry.HINTS)) {
+ return state._hintsState == CacheState.INVALID;
+ }
+ }
+ return false;
+ } else {
+ return super.getState(descriptor) == CacheState.INVALID;
+ }
+ }
+
+ @override
+ bool get hasResolvableCompilationUnit {
+ if (_parsedUnitState == CacheState.VALID) {
+ return true;
+ }
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (state._builtUnitState == CacheState.VALID || state._resolvedUnitState == CacheState.VALID) {
+ return true;
+ }
+ state = state._nextState;
+ }
+ ;
+ return false;
+ }
+
+ @override
+ void invalidateAllInformation() {
+ super.invalidateAllInformation();
+ _scanErrors = AnalysisError.NO_ERRORS;
+ _scanErrorsState = CacheState.INVALID;
+ _tokenStream = null;
+ _tokenStreamState = CacheState.INVALID;
+ _sourceKind = SourceKind.UNKNOWN;
+ _sourceKindState = CacheState.INVALID;
+ _parseErrors = AnalysisError.NO_ERRORS;
+ _parseErrorsState = CacheState.INVALID;
+ _parsedUnit = null;
+ _parsedUnitAccessed = false;
+ _parsedUnitState = CacheState.INVALID;
+ _discardCachedResolutionInformation(true);
+ }
+
+ /**
+ * Invalidate all of the resolution information associated with the compilation unit.
+ *
+ * @param invalidateUris true if the cached results of converting URIs to source files should also
+ * be invalidated.
+ */
+ void invalidateAllResolutionInformation(bool invalidateUris) {
+ if (_parsedUnitState == CacheState.FLUSHED) {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ if (state._builtUnitState == CacheState.VALID) {
+ _parsedUnit = state._builtUnit;
+ _parsedUnitAccessed = true;
+ _parsedUnitState = CacheState.VALID;
+ break;
+ } else if (state._resolvedUnitState == CacheState.VALID) {
+ _parsedUnit = state._resolvedUnit;
+ _parsedUnitAccessed = true;
+ _parsedUnitState = CacheState.VALID;
+ break;
+ }
+ state = state._nextState;
+ }
+ }
+ _discardCachedResolutionInformation(invalidateUris);
+ }
+
+ @override
+ bool get isRefactoringSafe {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ while (state != null) {
+ CacheState resolvedState = state._resolvedUnitState;
+ if (resolvedState != CacheState.VALID && resolvedState != CacheState.FLUSHED) {
+ return false;
+ }
+ state = state._nextState;
+ }
+ return true;
+ }
+
+ /**
+ * Record that an error occurred while attempting to build the element model for the source
+ * represented by this entry. This will set the state of all resolution-based information as being
+ * in error, but will not change the state of any parse results.
+ *
+ * @param librarySource the source of the library in which the element model was being built
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordBuildElementErrorInLibrary(Source librarySource, CaughtException exception) {
+ this.exception = exception;
+ _element = null;
+ _elementState = CacheState.ERROR;
+ clearFlags([_LAUNCHABLE_INDEX, _CLIENT_CODE_INDEX]);
+ _clientServerState = CacheState.ERROR;
+ _launchableState = CacheState.ERROR;
+ DartEntryImpl_ResolutionState state = _getOrCreateResolutionState(librarySource);
+ state.recordBuildElementError();
+ }
+
+ /**
+ * Record that an in-process model build has stopped without recording results because the results
+ * were invalidated before they could be recorded.
+ */
+ void recordBuildElementNotInProcess() {
+ if (_elementState == CacheState.IN_PROCESS) {
+ _elementState = CacheState.INVALID;
+ }
+ if (_clientServerState == CacheState.IN_PROCESS) {
+ _clientServerState = CacheState.INVALID;
+ }
+ if (_launchableState == CacheState.IN_PROCESS) {
+ _launchableState = CacheState.INVALID;
+ }
+ }
+
+ @override
+ void recordContentError(CaughtException exception) {
+ super.recordContentError(exception);
+ recordScanError(exception);
+ }
+
+ /**
+ * Record that an error occurred while attempting to generate hints for the source represented by
+ * this entry. This will set the state of all verification information as being in error.
+ *
+ * @param librarySource the source of the library in which hints were being generated
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordHintErrorInLibrary(Source librarySource, CaughtException exception) {
+ this.exception = exception;
+ DartEntryImpl_ResolutionState state = _getOrCreateResolutionState(librarySource);
+ state.recordHintError();
+ }
+
+ /**
+ * Record that an error occurred while attempting to scan or parse the entry represented by this
+ * entry. This will set the state of all information, including any resolution-based information,
+ * as being in error.
+ *
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordParseError(CaughtException exception) {
+ _sourceKind = SourceKind.UNKNOWN;
+ _sourceKindState = CacheState.ERROR;
+ _parseErrors = AnalysisError.NO_ERRORS;
+ _parseErrorsState = CacheState.ERROR;
+ _parsedUnit = null;
+ _parsedUnitAccessed = false;
+ _parsedUnitState = CacheState.ERROR;
+ _exportedLibraries = Source.EMPTY_ARRAY;
+ _exportedLibrariesState = CacheState.ERROR;
+ _importedLibraries = Source.EMPTY_ARRAY;
+ _importedLibrariesState = CacheState.ERROR;
+ _includedParts = Source.EMPTY_ARRAY;
+ _includedPartsState = CacheState.ERROR;
+ recordResolutionError(exception);
+ }
+
+ /**
+ * Record that the parse-related information for the associated source is about to be computed by
+ * the current thread.
+ */
+ void recordParseInProcess() {
+ if (_sourceKindState != CacheState.VALID) {
+ _sourceKindState = CacheState.IN_PROCESS;
+ }
+ if (_parseErrorsState != CacheState.VALID) {
+ _parseErrorsState = CacheState.IN_PROCESS;
+ }
+ if (_parsedUnitState != CacheState.VALID) {
+ _parsedUnitState = CacheState.IN_PROCESS;
+ }
+ if (_exportedLibrariesState != CacheState.VALID) {
+ _exportedLibrariesState = CacheState.IN_PROCESS;
+ }
+ if (_importedLibrariesState != CacheState.VALID) {
+ _importedLibrariesState = CacheState.IN_PROCESS;
+ }
+ if (_includedPartsState != CacheState.VALID) {
+ _includedPartsState = CacheState.IN_PROCESS;
+ }
+ }
+
+ /**
+ * Record that an in-process parse has stopped without recording results because the results were
+ * invalidated before they could be recorded.
+ */
+ void recordParseNotInProcess() {
+ if (getState(SourceEntry.LINE_INFO) == CacheState.IN_PROCESS) {
+ setState(SourceEntry.LINE_INFO, CacheState.INVALID);
+ }
+ if (_sourceKindState == CacheState.IN_PROCESS) {
+ _sourceKindState = CacheState.INVALID;
+ }
+ if (_parseErrorsState == CacheState.IN_PROCESS) {
+ _parseErrorsState = CacheState.INVALID;
+ }
+ if (_parsedUnitState == CacheState.IN_PROCESS) {
+ _parsedUnitState = CacheState.INVALID;
+ }
+ if (_exportedLibrariesState == CacheState.IN_PROCESS) {
+ _exportedLibrariesState = CacheState.INVALID;
+ }
+ if (_importedLibrariesState == CacheState.IN_PROCESS) {
+ _importedLibrariesState = CacheState.INVALID;
+ }
+ if (_includedPartsState == CacheState.IN_PROCESS) {
+ _includedPartsState = CacheState.INVALID;
+ }
+ }
+
+ /**
+ * Record that an error occurred while attempting to resolve the source represented by this entry.
+ * This will set the state of all resolution-based information as being in error, but will not
+ * change the state of any parse results.
+ *
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordResolutionError(CaughtException exception) {
+ this.exception = exception;
+ _element = null;
+ _elementState = CacheState.ERROR;
+ clearFlags([_LAUNCHABLE_INDEX, _CLIENT_CODE_INDEX]);
+ _clientServerState = CacheState.ERROR;
+ _launchableState = CacheState.ERROR;
+ _publicNamespace = null;
+ _publicNamespaceState = CacheState.ERROR;
+ _resolutionState.recordResolutionErrorsInAllLibraries();
+ }
+
+ /**
+ * Record that an error occurred while attempting to resolve the source represented by this entry.
+ * This will set the state of all resolution-based information as being in error, but will not
+ * change the state of any parse results.
+ *
+ * @param librarySource the source of the library in which resolution was being performed
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordResolutionErrorInLibrary(Source librarySource, CaughtException exception) {
+ this.exception = exception;
+ _element = null;
+ _elementState = CacheState.ERROR;
+ clearFlags([_LAUNCHABLE_INDEX, _CLIENT_CODE_INDEX]);
+ _clientServerState = CacheState.ERROR;
+ _launchableState = CacheState.ERROR;
+ _publicNamespace = null;
+ _publicNamespaceState = CacheState.ERROR;
+ DartEntryImpl_ResolutionState state = _getOrCreateResolutionState(librarySource);
+ state.recordResolutionError();
+ }
+
+ /**
+ * Record that an in-process resolution has stopped without recording results because the results
+ * were invalidated before they could be recorded.
+ */
+ void recordResolutionNotInProcess() {
+ if (_elementState == CacheState.IN_PROCESS) {
+ _elementState = CacheState.INVALID;
+ }
+ if (_clientServerState == CacheState.IN_PROCESS) {
+ _clientServerState = CacheState.INVALID;
+ }
+ if (_launchableState == CacheState.IN_PROCESS) {
+ _launchableState = CacheState.INVALID;
+ }
+ // TODO(brianwilkerson) Remove the code above this line after resolution and element building
+ // are separated.
+ if (_publicNamespaceState == CacheState.IN_PROCESS) {
+ _publicNamespaceState = CacheState.INVALID;
+ }
+ _resolutionState.recordResolutionNotInProcess();
+ }
+
+ /**
+ * Record that an error occurred while attempting to scan or parse the entry represented by this
+ * entry. This will set the state of all information, including any resolution-based information,
+ * as being in error.
+ *
+ * @param exception the exception that shows where the error occurred
+ */
+ @override
+ void recordScanError(CaughtException exception) {
+ super.recordScanError(exception);
+ _scanErrors = AnalysisError.NO_ERRORS;
+ _scanErrorsState = CacheState.ERROR;
+ _tokenStream = null;
+ _tokenStreamState = CacheState.ERROR;
+ recordParseError(exception);
+ }
+
+ /**
+ * Record that the scan-related information for the associated source is about to be computed by
+ * the current thread.
+ */
+ void recordScanInProcess() {
+ if (getState(SourceEntry.LINE_INFO) != CacheState.VALID) {
+ setState(SourceEntry.LINE_INFO, CacheState.IN_PROCESS);
+ }
+ if (_scanErrorsState != CacheState.VALID) {
+ _scanErrorsState = CacheState.IN_PROCESS;
+ }
+ if (_tokenStreamState != CacheState.VALID) {
+ _tokenStreamState = CacheState.IN_PROCESS;
+ }
+ }
+
+ /**
+ * Record that an in-process scan has stopped without recording results because the results were
+ * invalidated before they could be recorded.
+ */
+ void recordScanNotInProcess() {
+ if (getState(SourceEntry.LINE_INFO) == CacheState.IN_PROCESS) {
+ setState(SourceEntry.LINE_INFO, CacheState.INVALID);
+ }
+ if (_scanErrorsState == CacheState.IN_PROCESS) {
+ _scanErrorsState = CacheState.INVALID;
+ }
+ if (_tokenStreamState == CacheState.IN_PROCESS) {
+ _tokenStreamState = CacheState.INVALID;
+ }
+ }
+
+ /**
+ * Record that an error occurred while attempting to generate errors and warnings for the source
+ * represented by this entry. This will set the state of all verification information as being in
+ * error.
+ *
+ * @param librarySource the source of the library in which verification was being performed
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordVerificationErrorInLibrary(Source librarySource, CaughtException exception) {
+ this.exception = exception;
+ DartEntryImpl_ResolutionState state = _getOrCreateResolutionState(librarySource);
+ state.recordVerificationError();
+ }
+
+ /**
+ * Remove the given library from the list of libraries that contain this part. This method should
+ * only be invoked on entries that represent a part.
+ *
+ * @param librarySource the source of the library to be removed
+ */
+ void removeContainingLibrary(Source librarySource) {
+ _containingLibraries.remove(librarySource);
+ }
+
+ /**
+ * Remove any resolution information associated with this compilation unit being part of the given
+ * library, presumably because it is no longer part of the library.
+ *
+ * @param librarySource the source of the defining compilation unit of the library that used to
+ * contain this part but no longer does
+ */
+ void removeResolution(Source librarySource) {
+ if (librarySource != null) {
+ if (librarySource == _resolutionState._librarySource) {
+ if (_resolutionState._nextState == null) {
+ _resolutionState.invalidateAllResolutionInformation();
+ } else {
+ _resolutionState = _resolutionState._nextState;
+ }
+ } else {
+ DartEntryImpl_ResolutionState priorState = _resolutionState;
+ DartEntryImpl_ResolutionState state = _resolutionState._nextState;
+ while (state != null) {
+ if (librarySource == state._librarySource) {
+ priorState._nextState = state._nextState;
+ break;
+ }
+ priorState = state;
+ state = state._nextState;
+ }
+ }
+ }
+ }
+
+ /**
+ * Set the list of libraries that contain this compilation unit to contain only the given source.
+ * This method should only be invoked on entries that represent a library.
+ *
+ * @param librarySource the source of the single library that the list should contain
+ */
+ void set containingLibrary(Source librarySource) {
+ _containingLibraries.clear();
+ _containingLibraries.add(librarySource);
+ }
+
+ @override
+ void setState(DataDescriptor descriptor, CacheState state) {
+ if (identical(descriptor, DartEntry.ELEMENT)) {
+ _element = updatedValue(state, _element, null);
+ _elementState = state;
+ } else if (identical(descriptor, DartEntry.EXPORTED_LIBRARIES)) {
+ _exportedLibraries = updatedValue(state, _exportedLibraries, Source.EMPTY_ARRAY);
+ _exportedLibrariesState = state;
+ } else if (identical(descriptor, DartEntry.IMPORTED_LIBRARIES)) {
+ _importedLibraries = updatedValue(state, _importedLibraries, Source.EMPTY_ARRAY);
+ _importedLibrariesState = state;
+ } else if (identical(descriptor, DartEntry.INCLUDED_PARTS)) {
+ _includedParts = updatedValue(state, _includedParts, Source.EMPTY_ARRAY);
+ _includedPartsState = state;
+ } else if (identical(descriptor, DartEntry.IS_CLIENT)) {
+ _updateValueOfFlag(_CLIENT_CODE_INDEX, state);
+ _clientServerState = state;
+ } else if (identical(descriptor, DartEntry.IS_LAUNCHABLE)) {
+ _updateValueOfFlag(_LAUNCHABLE_INDEX, state);
+ _launchableState = state;
+ } else if (identical(descriptor, DartEntry.PARSE_ERRORS)) {
+ _parseErrors = updatedValue(state, _parseErrors, AnalysisError.NO_ERRORS);
+ _parseErrorsState = state;
+ } else if (identical(descriptor, DartEntry.PARSED_UNIT)) {
+ CompilationUnit newUnit = updatedValue(state, _parsedUnit, null);
+ if (!identical(newUnit, _parsedUnit)) {
+ _parsedUnitAccessed = false;
+ }
+ _parsedUnit = newUnit;
+ _parsedUnitState = state;
+ } else if (identical(descriptor, DartEntry.PUBLIC_NAMESPACE)) {
+ _publicNamespace = updatedValue(state, _publicNamespace, null);
+ _publicNamespaceState = state;
+ } else if (identical(descriptor, DartEntry.SCAN_ERRORS)) {
+ _scanErrors = updatedValue(state, _scanErrors, AnalysisError.NO_ERRORS);
+ _scanErrorsState = state;
+ } else if (identical(descriptor, DartEntry.SOURCE_KIND)) {
+ _sourceKind = updatedValue(state, _sourceKind, SourceKind.UNKNOWN);
+ _sourceKindState = state;
+ } else if (identical(descriptor, DartEntry.TOKEN_STREAM)) {
+ _tokenStream = updatedValue(state, _tokenStream, null);
+ _tokenStreamState = state;
+ } else {
+ super.setState(descriptor, state);
+ }
+ }
+
+ /**
+ * Set the state of the data represented by the given descriptor in the context of the given
+ * library to the given state.
+ *
+ * @param descriptor the descriptor representing the data whose state is to be set
+ * @param librarySource the source of the defining compilation unit of the library that is the
+ * context for the data
+ * @param cacheState the new state of the data represented by the given descriptor
+ */
+ void setStateInLibrary(DataDescriptor descriptor, Source librarySource, CacheState cacheState) {
+ DartEntryImpl_ResolutionState state = _getOrCreateResolutionState(librarySource);
+ if (identical(descriptor, DartEntry.RESOLUTION_ERRORS)) {
+ state._resolutionErrors = updatedValue(cacheState, state._resolutionErrors, AnalysisError.NO_ERRORS);
+ state._resolutionErrorsState = cacheState;
+ } else if (identical(descriptor, DartEntry.RESOLVED_UNIT)) {
+ state._resolvedUnit = updatedValue(cacheState, state._resolvedUnit, null);
+ state._resolvedUnitState = cacheState;
+ } else if (identical(descriptor, DartEntry.VERIFICATION_ERRORS)) {
+ state._verificationErrors = updatedValue(cacheState, state._verificationErrors, AnalysisError.NO_ERRORS);
+ state._verificationErrorsState = cacheState;
+ } else if (identical(descriptor, DartEntry.HINTS)) {
+ state._hints = updatedValue(cacheState, state._hints, AnalysisError.NO_ERRORS);
+ state._hintsState = cacheState;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+
+ @override
+ void setValue(DataDescriptor descriptor, Object value) {
+ if (identical(descriptor, DartEntry.ANGULAR_ERRORS)) {
+ _angularErrors = value == null ? AnalysisError.NO_ERRORS : (value as List<AnalysisError>);
+ } else if (identical(descriptor, DartEntry.ELEMENT)) {
+ _element = value as LibraryElement;
+ _elementState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.EXPORTED_LIBRARIES)) {
+ _exportedLibraries = value == null ? Source.EMPTY_ARRAY : (value as List<Source>);
+ _exportedLibrariesState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.IMPORTED_LIBRARIES)) {
+ _importedLibraries = value == null ? Source.EMPTY_ARRAY : (value as List<Source>);
+ _importedLibrariesState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.INCLUDED_PARTS)) {
+ _includedParts = value == null ? Source.EMPTY_ARRAY : (value as List<Source>);
+ _includedPartsState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.IS_CLIENT)) {
+ setFlag(_CLIENT_CODE_INDEX, value as bool);
+ _clientServerState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.IS_LAUNCHABLE)) {
+ setFlag(_LAUNCHABLE_INDEX, value as bool);
+ _launchableState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.PARSE_ERRORS)) {
+ _parseErrors = value == null ? AnalysisError.NO_ERRORS : (value as List<AnalysisError>);
+ _parseErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.PARSED_UNIT)) {
+ _parsedUnit = value as CompilationUnit;
+ _parsedUnitAccessed = false;
+ _parsedUnitState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.PUBLIC_NAMESPACE)) {
+ _publicNamespace = value as Namespace;
+ _publicNamespaceState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.SCAN_ERRORS)) {
+ _scanErrors = value == null ? AnalysisError.NO_ERRORS : (value as List<AnalysisError>);
+ _scanErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.SOURCE_KIND)) {
+ _sourceKind = value as SourceKind;
+ _sourceKindState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.TOKEN_STREAM)) {
+ _tokenStream = value as Token;
+ _tokenStreamState = CacheState.VALID;
+ } else {
+ super.setValue(descriptor, value);
+ }
+ }
+
+ /**
+ * Set the value of the data represented by the given descriptor in the context of the given
+ * library to the given value, and set the state of that data to [CacheState#VALID].
+ *
+ * @param descriptor the descriptor representing which data is to have its value set
+ * @param librarySource the source of the defining compilation unit of the library that is the
+ * context for the data
+ * @param value the new value of the data represented by the given descriptor and library
+ */
+ void setValueInLibrary(DataDescriptor descriptor, Source librarySource, Object value) {
+ DartEntryImpl_ResolutionState state = _getOrCreateResolutionState(librarySource);
+ if (identical(descriptor, DartEntry.RESOLUTION_ERRORS)) {
+ state._resolutionErrors = value == null ? AnalysisError.NO_ERRORS : (value as List<AnalysisError>);
+ state._resolutionErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.RESOLVED_UNIT)) {
+ state._resolvedUnit = value as CompilationUnit;
+ state._resolvedUnitState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.VERIFICATION_ERRORS)) {
+ state._verificationErrors = value == null ? AnalysisError.NO_ERRORS : (value as List<AnalysisError>);
+ state._verificationErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, DartEntry.HINTS)) {
+ state._hints = value == null ? AnalysisError.NO_ERRORS : (value as List<AnalysisError>);
+ state._hintsState = CacheState.VALID;
+ }
+ }
+
+ @override
+ void copyFrom(SourceEntryImpl entry) {
+ super.copyFrom(entry);
+ DartEntryImpl other = entry as DartEntryImpl;
+ _scanErrorsState = other._scanErrorsState;
+ _scanErrors = other._scanErrors;
+ _tokenStreamState = other._tokenStreamState;
+ _tokenStream = other._tokenStream;
+ _sourceKindState = other._sourceKindState;
+ _sourceKind = other._sourceKind;
+ _parsedUnitState = other._parsedUnitState;
+ _parsedUnit = other._parsedUnit;
+ _parsedUnitAccessed = other._parsedUnitAccessed;
+ _parseErrorsState = other._parseErrorsState;
+ _parseErrors = other._parseErrors;
+ _includedPartsState = other._includedPartsState;
+ _includedParts = other._includedParts;
+ _exportedLibrariesState = other._exportedLibrariesState;
+ _exportedLibraries = other._exportedLibraries;
+ _importedLibrariesState = other._importedLibrariesState;
+ _importedLibraries = other._importedLibraries;
+ _containingLibraries = new List<Source>.from(other._containingLibraries);
+ _resolutionState.copyFrom(other._resolutionState);
+ _elementState = other._elementState;
+ _element = other._element;
+ _publicNamespaceState = other._publicNamespaceState;
+ _publicNamespace = other._publicNamespace;
+ _clientServerState = other._clientServerState;
+ _launchableState = other._launchableState;
+ _angularErrors = other._angularErrors;
+ }
+
+ @override
+ bool get hasErrorState => super.hasErrorState || _scanErrorsState == CacheState.ERROR || _tokenStreamState == CacheState.ERROR || _sourceKindState == CacheState.ERROR || _parsedUnitState == CacheState.ERROR || _parseErrorsState == CacheState.ERROR || _importedLibrariesState == CacheState.ERROR || _exportedLibrariesState == CacheState.ERROR || _includedPartsState == CacheState.ERROR || _elementState == CacheState.ERROR || _publicNamespaceState == CacheState.ERROR || _clientServerState == CacheState.ERROR || _launchableState == CacheState.ERROR || _resolutionState.hasErrorState;
+
+ @override
+ bool writeDiffOn(JavaStringBuilder builder, SourceEntry oldEntry) {
+ bool needsSeparator = super.writeDiffOn(builder, oldEntry);
+ if (oldEntry is! DartEntryImpl) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append("entry type changed; was ${oldEntry.runtimeType.toString()}");
+ return true;
+ }
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.TOKEN_STREAM, "tokenStream");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.SCAN_ERRORS, "scanErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.SOURCE_KIND, "sourceKind");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.PARSED_UNIT, "parsedUnit");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.PARSE_ERRORS, "parseErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.IMPORTED_LIBRARIES, "importedLibraries");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.EXPORTED_LIBRARIES, "exportedLibraries");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.INCLUDED_PARTS, "includedParts");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.ELEMENT, "element");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.PUBLIC_NAMESPACE, "publicNamespace");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.IS_CLIENT, "clientServer");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.IS_LAUNCHABLE, "launchable");
+ // TODO(brianwilkerson) Add better support for containingLibraries. It would be nice to be able
+ // to report on size-preserving changes.
+ int oldLibraryCount = (oldEntry as DartEntryImpl)._containingLibraries.length;
+ int libraryCount = _containingLibraries.length;
+ if (oldLibraryCount != libraryCount) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append("containingLibraryCount = ");
+ builder.append(oldLibraryCount);
+ builder.append(" -> ");
+ builder.append(libraryCount);
+ needsSeparator = true;
+ }
+ //
+ // Report change to the per-library state.
+ //
+ HashMap<Source, DartEntryImpl_ResolutionState> oldStateMap = new HashMap<Source, DartEntryImpl_ResolutionState>();
+ DartEntryImpl_ResolutionState state = (oldEntry as DartEntryImpl)._resolutionState;
+ while (state != null) {
+ Source librarySource = state._librarySource;
+ if (librarySource != null) {
+ oldStateMap[librarySource] = state;
+ }
+ state = state._nextState;
+ }
+ state = _resolutionState;
+ while (state != null) {
+ Source librarySource = state._librarySource;
+ if (librarySource != null) {
+ DartEntryImpl_ResolutionState oldState = oldStateMap.remove(librarySource);
+ if (oldState == null) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append("added resolution for ");
+ builder.append(librarySource.fullName);
+ needsSeparator = true;
+ } else {
+ needsSeparator = oldState.writeDiffOn(builder, needsSeparator, oldEntry as DartEntry);
+ }
+ }
+ state = state._nextState;
+ }
+ for (Source librarySource in oldStateMap.keys.toSet()) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append("removed resolution for ");
+ builder.append(librarySource.fullName);
+ needsSeparator = true;
+ }
+ return needsSeparator;
+ }
+
+ @override
+ void writeOn(JavaStringBuilder builder) {
+ builder.append("Dart: ");
+ super.writeOn(builder);
+ builder.append("; tokenStream = ");
+ builder.append(_tokenStreamState);
+ builder.append("; scanErrors = ");
+ builder.append(_scanErrorsState);
+ builder.append("; sourceKind = ");
+ builder.append(_sourceKindState);
+ builder.append("; parsedUnit = ");
+ builder.append(_parsedUnitState);
+ builder.append(" (");
+ builder.append(_parsedUnitAccessed ? "T" : "F");
+ builder.append("); parseErrors = ");
+ builder.append(_parseErrorsState);
+ builder.append("; exportedLibraries = ");
+ builder.append(_exportedLibrariesState);
+ builder.append("; importedLibraries = ");
+ builder.append(_importedLibrariesState);
+ builder.append("; includedParts = ");
+ builder.append(_includedPartsState);
+ builder.append("; element = ");
+ builder.append(_elementState);
+ builder.append("; publicNamespace = ");
+ builder.append(_publicNamespaceState);
+ builder.append("; clientServer = ");
+ builder.append(_clientServerState);
+ builder.append("; launchable = ");
+ builder.append(_launchableState);
+ // builder.append("; angularElements = ");
+ _resolutionState.writeOn(builder);
+ }
+
+ /**
+ * Invalidate all of the resolution information associated with the compilation unit.
+ *
+ * @param invalidateUris true if the cached results of converting URIs to source files should also
+ * be invalidated.
+ */
+ void _discardCachedResolutionInformation(bool invalidateUris) {
+ _element = null;
+ _elementState = CacheState.INVALID;
+ clearFlags([_LAUNCHABLE_INDEX, _CLIENT_CODE_INDEX]);
+ _clientServerState = CacheState.INVALID;
+ _launchableState = CacheState.INVALID;
+ _publicNamespace = null;
+ _publicNamespaceState = CacheState.INVALID;
+ _resolutionState.invalidateAllResolutionInformation();
+ if (invalidateUris) {
+ _importedLibraries = Source.EMPTY_ARRAY;
+ _importedLibrariesState = CacheState.INVALID;
+ _exportedLibraries = Source.EMPTY_ARRAY;
+ _exportedLibrariesState = CacheState.INVALID;
+ _includedParts = Source.EMPTY_ARRAY;
+ _includedPartsState = CacheState.INVALID;
+ }
+ }
+
+ /**
+ * Return a resolution state for the specified library, creating one as necessary.
+ *
+ * @param librarySource the library source (not `null`)
+ * @return the resolution state (not `null`)
+ */
+ DartEntryImpl_ResolutionState _getOrCreateResolutionState(Source librarySource) {
+ DartEntryImpl_ResolutionState state = _resolutionState;
+ if (state._librarySource == null) {
+ state._librarySource = librarySource;
+ return state;
+ }
+ while (state._librarySource != librarySource) {
+ if (state._nextState == null) {
+ DartEntryImpl_ResolutionState newState = new DartEntryImpl_ResolutionState();
+ newState._librarySource = librarySource;
+ state._nextState = newState;
+ return newState;
+ }
+ state = state._nextState;
+ }
+ return state;
+ }
+
+ /**
+ * Given that the specified flag is being transitioned to the given state, set the value of the
+ * flag to the value that should be kept in the cache.
+ *
+ * @param index the index of the flag whose state is being set
+ * @param state the state to which the value is being transitioned
+ */
+ void _updateValueOfFlag(int index, CacheState state) {
+ if (state == CacheState.VALID) {
+ throw new IllegalArgumentException("Use setValue() to set the state to VALID");
+ } else if (state != CacheState.IN_PROCESS) {
+ //
+ // If the value is in process, we can leave the current value in the cache for any 'get'
+ // methods to access.
+ //
+ setFlag(index, false);
+ }
+ }
+}
+
+/**
+ * Instances of the class `ResolutionState` represent the information produced by resolving
+ * a compilation unit as part of a specific library.
+ */
+class DartEntryImpl_ResolutionState {
+ /**
+ * The next resolution state or `null` if none.
+ */
+ DartEntryImpl_ResolutionState _nextState;
+
+ /**
+ * The source for the defining compilation unit of the library that contains this unit. If this
+ * unit is the defining compilation unit for it's library, then this will be the source for this
+ * unit.
+ */
+ Source _librarySource;
+
+ /**
+ * The state of the cached compilation unit that contains references to the built element model.
+ */
+ CacheState _builtUnitState = CacheState.INVALID;
+
+ /**
+ * The compilation unit that contains references to the built element model, or `null` if
+ * that compilation unit is not currently cached.
+ */
+ CompilationUnit _builtUnit;
+
+ /**
+ * The state of the cached errors reported while building an element model.
+ */
+ CacheState _buildElementErrorsState = CacheState.INVALID;
+
+ /**
+ * The errors produced while building an element model, or an empty array if the errors are not
+ * currently cached.
+ */
+ List<AnalysisError> _buildElementErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached resolved compilation unit.
+ */
+ CacheState _resolvedUnitState = CacheState.INVALID;
+
+ /**
+ * The resolved compilation unit, or `null` if the resolved compilation unit is not
+ * currently cached.
+ */
+ CompilationUnit _resolvedUnit;
+
+ /**
+ * The state of the cached resolution errors.
+ */
+ CacheState _resolutionErrorsState = CacheState.INVALID;
+
+ /**
+ * The errors produced while resolving the compilation unit, or an empty array if the errors are
+ * not currently cached.
+ */
+ List<AnalysisError> _resolutionErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached verification errors.
+ */
+ CacheState _verificationErrorsState = CacheState.INVALID;
+
+ /**
+ * The errors produced while verifying the compilation unit, or an empty array if the errors are
+ * not currently cached.
+ */
+ List<AnalysisError> _verificationErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached hints.
+ */
+ CacheState _hintsState = CacheState.INVALID;
+
+ /**
+ * The hints produced while auditing the compilation unit, or an empty array if the hints are
+ * not currently cached.
+ */
+ List<AnalysisError> _hints = AnalysisError.NO_ERRORS;
+
+ /**
+ * Set this state to be exactly like the given state, recursively copying the next state as
+ * necessary.
+ *
+ * @param other the state to be copied
+ */
+ void copyFrom(DartEntryImpl_ResolutionState other) {
+ _librarySource = other._librarySource;
+ _builtUnitState = other._builtUnitState;
+ _builtUnit = other._builtUnit;
+ _buildElementErrorsState = other._buildElementErrorsState;
+ _buildElementErrors = other._buildElementErrors;
+ _resolvedUnitState = other._resolvedUnitState;
+ _resolvedUnit = other._resolvedUnit;
+ _resolutionErrorsState = other._resolutionErrorsState;
+ _resolutionErrors = other._resolutionErrors;
+ _verificationErrorsState = other._verificationErrorsState;
+ _verificationErrors = other._verificationErrors;
+ _hintsState = other._hintsState;
+ _hints = other._hints;
+ if (other._nextState != null) {
+ _nextState = new DartEntryImpl_ResolutionState();
+ _nextState.copyFrom(other._nextState);
+ }
+ }
+
+ /**
+ * Flush any AST structures being maintained by this state.
+ */
+ void flushAstStructures() {
+ if (_builtUnitState == CacheState.VALID) {
+ _builtUnitState = CacheState.FLUSHED;
+ _builtUnit = null;
+ }
+ if (_resolvedUnitState == CacheState.VALID) {
+ _resolvedUnitState = CacheState.FLUSHED;
+ _resolvedUnit = null;
+ }
+ if (_nextState != null) {
+ _nextState.flushAstStructures();
+ }
+ }
+
+ bool get hasErrorState => _builtUnitState == CacheState.ERROR || _buildElementErrorsState == CacheState.ERROR || _resolvedUnitState == CacheState.ERROR || _resolutionErrorsState == CacheState.ERROR || _verificationErrorsState == CacheState.ERROR || _hintsState == CacheState.ERROR || (_nextState != null && _nextState.hasErrorState);
+
+ /**
+ * Invalidate all of the resolution information associated with the compilation unit.
+ */
+ void invalidateAllResolutionInformation() {
+ _nextState = null;
+ _librarySource = null;
+ _builtUnitState = CacheState.INVALID;
+ _builtUnit = null;
+ _buildElementErrorsState = CacheState.INVALID;
+ _buildElementErrors = AnalysisError.NO_ERRORS;
+ _resolvedUnitState = CacheState.INVALID;
+ _resolvedUnit = null;
+ _resolutionErrorsState = CacheState.INVALID;
+ _resolutionErrors = AnalysisError.NO_ERRORS;
+ _verificationErrorsState = CacheState.INVALID;
+ _verificationErrors = AnalysisError.NO_ERRORS;
+ _hintsState = CacheState.INVALID;
+ _hints = AnalysisError.NO_ERRORS;
+ }
+
+ /**
+ * Record that an error occurred while attempting to build the element model for the source
+ * represented by this state.
+ */
+ void recordBuildElementError() {
+ _builtUnitState = CacheState.ERROR;
+ _builtUnit = null;
+ _buildElementErrorsState = CacheState.ERROR;
+ _buildElementErrors = AnalysisError.NO_ERRORS;
+ recordResolutionError();
+ }
+
+ /**
+ * Record that an error occurred while attempting to generate hints for the source represented
+ * by this entry. This will set the state of all verification information as being in error.
+ */
+ void recordHintError() {
+ _hints = AnalysisError.NO_ERRORS;
+ _hintsState = CacheState.ERROR;
+ }
+
+ /**
+ * Record that an error occurred while attempting to resolve the source represented by this
+ * state.
+ */
+ void recordResolutionError() {
+ _resolvedUnitState = CacheState.ERROR;
+ _resolvedUnit = null;
+ _resolutionErrorsState = CacheState.ERROR;
+ _resolutionErrors = AnalysisError.NO_ERRORS;
+ recordVerificationError();
+ }
+
+ /**
+ * Record that an error occurred while attempting to scan or parse the entry represented by this
+ * entry. This will set the state of all resolution-based information as being in error, but
+ * will not change the state of any parse results.
+ */
+ void recordResolutionErrorsInAllLibraries() {
+ _builtUnitState = CacheState.ERROR;
+ _builtUnit = null;
+ _buildElementErrorsState = CacheState.ERROR;
+ _buildElementErrors = AnalysisError.NO_ERRORS;
+ _resolvedUnitState = CacheState.ERROR;
+ _resolvedUnit = null;
+ _resolutionErrorsState = CacheState.ERROR;
+ _resolutionErrors = AnalysisError.NO_ERRORS;
+ recordVerificationError();
+ if (_nextState != null) {
+ _nextState.recordResolutionErrorsInAllLibraries();
+ }
+ }
+
+ /**
+ * Record that an in-process parse has stopped without recording results because the results
+ * were invalidated before they could be recorded.
+ */
+ void recordResolutionNotInProcess() {
+ if (_resolvedUnitState == CacheState.IN_PROCESS) {
+ _resolvedUnitState = CacheState.INVALID;
+ }
+ if (_resolutionErrorsState == CacheState.IN_PROCESS) {
+ _resolutionErrorsState = CacheState.INVALID;
+ }
+ if (_verificationErrorsState == CacheState.IN_PROCESS) {
+ _verificationErrorsState = CacheState.INVALID;
+ }
+ if (_hintsState == CacheState.IN_PROCESS) {
+ _hintsState = CacheState.INVALID;
+ }
+ if (_nextState != null) {
+ _nextState.recordResolutionNotInProcess();
+ }
+ }
+
+ /**
+ * Record that an error occurred while attempting to generate errors and warnings for the source
+ * represented by this entry. This will set the state of all verification information as being
+ * in error.
+ */
+ void recordVerificationError() {
+ _verificationErrors = AnalysisError.NO_ERRORS;
+ _verificationErrorsState = CacheState.ERROR;
+ recordHintError();
+ }
+
+ /**
+ * Write a textual representation of the difference between the old entry and this entry to the
+ * given string builder.
+ *
+ * @param builder the string builder to which the difference is to be written
+ * @param oldEntry the entry that was replaced by this entry
+ * @return `true` if some difference was written
+ */
+ bool writeDiffOn(JavaStringBuilder builder, bool needsSeparator, DartEntry oldEntry) {
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.RESOLVED_UNIT, _resolvedUnitState, "resolvedUnit");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.RESOLUTION_ERRORS, _resolutionErrorsState, "resolutionErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.VERIFICATION_ERRORS, _verificationErrorsState, "verificationErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, DartEntry.HINTS, _hintsState, "hints");
+ return needsSeparator;
+ }
+
+ /**
+ * Write a textual representation of this state to the given builder. The result will only be
+ * used for debugging purposes.
+ *
+ * @param builder the builder to which the text should be written
+ */
+ void writeOn(JavaStringBuilder builder) {
+ if (_librarySource != null) {
+ builder.append("; builtUnit = ");
+ builder.append(_builtUnitState);
+ builder.append("; buildElementErrors = ");
+ builder.append(_buildElementErrorsState);
+ builder.append("; resolvedUnit = ");
+ builder.append(_resolvedUnitState);
+ builder.append("; resolutionErrors = ");
+ builder.append(_resolutionErrorsState);
+ builder.append("; verificationErrors = ");
+ builder.append(_verificationErrorsState);
+ builder.append("; hints = ");
+ builder.append(_hintsState);
+ if (_nextState != null) {
+ _nextState.writeOn(builder);
+ }
+ }
+ }
+
+ /**
+ * Write a textual representation of the difference between the state of the specified data
+ * between the old entry and this entry to the given string builder.
+ *
+ * @param builder the string builder to which the difference is to be written
+ * @param needsSeparator `true` if any data that is written
+ * @param oldEntry the entry that was replaced by this entry
+ * @param descriptor the descriptor defining the data whose state is being compared
+ * @param label the label used to describe the state
+ * @return `true` if some difference was written
+ */
+ bool writeStateDiffOn(JavaStringBuilder builder, bool needsSeparator, SourceEntry oldEntry, DataDescriptor descriptor, CacheState newState, String label) {
+ CacheState oldState = (oldEntry as DartEntryImpl).getStateInLibrary(descriptor, _librarySource);
+ if (oldState != newState) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append(label);
+ builder.append(" = ");
+ builder.append(oldState);
+ builder.append(" -> ");
+ builder.append(newState);
+ return true;
+ }
+ return needsSeparator;
+ }
+}
+
+/**
+ * Instances of the class `DataDescriptor` are immutable constants representing data that can
+ * be stored in the cache.
+ */
+class DataDescriptor<E> {
+ /**
+ * The name of the descriptor, used for debugging purposes.
+ */
+ final String _name;
+
+ /**
+ * Initialize a newly created descriptor to have the given name.
+ *
+ * @param name the name of the descriptor
+ */
+ DataDescriptor(this._name);
+
+ @override
+ String toString() => _name;
+}
+
+/**
+ * Instances of the class `DefaultRetentionPolicy` implement a retention policy that will keep
+ * AST's in the cache if there is analysis information that needs to be computed for a source, where
+ * the computation is dependent on having the AST.
+ */
+class DefaultRetentionPolicy implements CacheRetentionPolicy {
+ /**
+ * An instance of this class that can be shared.
+ */
+ static DefaultRetentionPolicy POLICY = new DefaultRetentionPolicy();
+
+ @override
+ RetentionPriority getAstPriority(Source source, SourceEntry sourceEntry) {
+ if (sourceEntry is DartEntry) {
+ DartEntry dartEntry = sourceEntry;
+ if (astIsNeeded(dartEntry)) {
+ return RetentionPriority.MEDIUM;
+ }
+ }
+ return RetentionPriority.LOW;
+ }
+
+ /**
+ * Return `true` if there is analysis information in the given entry that needs to be
+ * computed, where the computation is dependent on having the AST.
+ *
+ * @param dartEntry the entry being tested
+ * @return `true` if there is analysis information that needs to be computed from the AST
+ */
+ bool astIsNeeded(DartEntry dartEntry) => dartEntry.hasInvalidData(DartEntry.HINTS) || dartEntry.hasInvalidData(DartEntry.VERIFICATION_ERRORS) || dartEntry.hasInvalidData(DartEntry.RESOLUTION_ERRORS);
+}
+
+/**
+ * Recursively visits [HtmlUnit] and every embedded [Expression].
+ */
+abstract class ExpressionVisitor extends ht.RecursiveXmlVisitor<Object> {
+ /**
+ * Visits the given [Expression]s embedded into tag or attribute.
+ *
+ * @param expression the [Expression] to visit, not `null`
+ */
+ void visitExpression(Expression expression);
+
+ @override
+ Object visitXmlAttributeNode(ht.XmlAttributeNode node) {
+ _visitExpressions(node.expressions);
+ return super.visitXmlAttributeNode(node);
+ }
+
+ @override
+ Object visitXmlTagNode(ht.XmlTagNode node) {
+ _visitExpressions(node.expressions);
+ return super.visitXmlTagNode(node);
+ }
+
+ /**
+ * Visits [Expression]s of the given [XmlExpression]s.
+ */
+ void _visitExpressions(List<ht.XmlExpression> expressions) {
+ for (ht.XmlExpression xmlExpression in expressions) {
+ if (xmlExpression is AngularXmlExpression) {
+ AngularXmlExpression angularXmlExpression = xmlExpression;
+ List<Expression> dartExpressions = angularXmlExpression.expression.expressions;
+ for (Expression dartExpression in dartExpressions) {
+ visitExpression(dartExpression);
+ }
+ }
+ if (xmlExpression is ht.RawXmlExpression) {
+ ht.RawXmlExpression rawXmlExpression = xmlExpression;
+ visitExpression(rawXmlExpression.expression);
+ }
+ }
+ }
+}
+
+/**
+ * Instances of the class `GenerateDartErrorsTask` generate errors and warnings for a single
+ * Dart source.
+ */
+class GenerateDartErrorsTask extends AnalysisTask {
+ /**
+ * Check each directive in the given compilation unit to see if the referenced source exists and
+ * report an error if it does not.
+ *
+ * @param context the context in which the library exists
+ * @param librarySource the source representing the library containing the directives
+ * @param unit the compilation unit containing the directives to be validated
+ * @param errorListener the error listener to which errors should be reported
+ */
+ static void validateDirectives(AnalysisContext context, Source librarySource, CompilationUnit unit, AnalysisErrorListener errorListener) {
+ for (Directive directive in unit.directives) {
+ if (directive is UriBasedDirective) {
+ validateReferencedSource(context, librarySource, directive, errorListener);
+ }
+ }
+ }
+
+ /**
+ * Check the given directive to see if the referenced source exists and report an error if it does
+ * not.
+ *
+ * @param context the context in which the library exists
+ * @param librarySource the source representing the library containing the directive
+ * @param directive the directive to be verified
+ * @param errorListener the error listener to which errors should be reported
+ */
+ static void validateReferencedSource(AnalysisContext context, Source librarySource, UriBasedDirective directive, AnalysisErrorListener errorListener) {
+ Source source = directive.source;
+ if (source != null) {
+ if (context.exists(source)) {
+ return;
+ }
+ } else {
+ // Don't report errors already reported by ParseDartTask#resolveDirective
+ if (directive.validate() != null) {
+ return;
+ }
+ }
+ StringLiteral uriLiteral = directive.uri;
+ errorListener.onError(new AnalysisError.con2(librarySource, uriLiteral.offset, uriLiteral.length, CompileTimeErrorCode.URI_DOES_NOT_EXIST, [directive.uriContent]));
+ }
+
+ /**
+ * The source for which errors and warnings are to be produced.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The compilation unit used to resolve the dependencies.
+ */
+ final CompilationUnit _unit;
+
+ /**
+ * The element model for the library containing the source.
+ */
+ final LibraryElement libraryElement;
+
+ /**
+ * The errors that were generated for the source.
+ */
+ List<AnalysisError> _errors;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source for which errors and warnings are to be produced
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param unit the compilation unit used to resolve the dependencies
+ * @param libraryElement the element model for the library containing the source
+ */
+ GenerateDartErrorsTask(InternalAnalysisContext context, this.source, this.modificationTime, this._unit, this.libraryElement) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitGenerateDartErrorsTask(this);
+
+ /**
+ * Return the errors that were generated for the source.
+ *
+ * @return the errors that were generated for the source
+ */
+ List<AnalysisError> get errors => _errors;
+
+ @override
+ String get taskDescription => "generate errors and warnings for ${source.fullName}";
+
+ @override
+ void internalPerform() {
+ TimeCounter_TimeCounterHandle timeCounter = PerformanceStatistics.errors.start();
+ try {
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ ErrorReporter errorReporter = new ErrorReporter(errorListener, source);
+ TypeProvider typeProvider = context.typeProvider;
+ //
+ // Validate the directives
+ //
+ validateDirectives(context, source, _unit, errorListener);
+ //
+ // Use the ConstantVerifier to verify the use of constants. This needs to happen before using
+ // the ErrorVerifier because some error codes need the computed constant values.
+ //
+ ConstantVerifier constantVerifier = new ConstantVerifier(errorReporter, libraryElement, typeProvider);
+ _unit.accept(constantVerifier);
+ //
+ // Use the ErrorVerifier to compute the rest of the errors.
+ //
+ ErrorVerifier errorVerifier = new ErrorVerifier(errorReporter, libraryElement, typeProvider, new InheritanceManager(libraryElement));
+ _unit.accept(errorVerifier);
+ _errors = errorListener.getErrorsForSource(source);
+ } finally {
+ timeCounter.stop();
+ }
+ }
+}
+
+/**
+ * Instances of the class `GenerateDartHintsTask` generate hints for a single Dart library.
+ */
+class GenerateDartHintsTask extends AnalysisTask {
+ /**
+ * The compilation units that comprise the library, with the defining compilation unit appearing
+ * first in the array.
+ */
+ final List<TimestampedData<CompilationUnit>> _units;
+
+ /**
+ * The element model for the library being analyzed.
+ */
+ final LibraryElement libraryElement;
+
+ /**
+ * A table mapping the sources that were analyzed to the hints that were generated for the
+ * sources.
+ */
+ HashMap<Source, TimestampedData<List<AnalysisError>>> _hintMap;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param units the compilation units that comprise the library, with the defining compilation
+ * unit appearing first in the array
+ * @param libraryElement the element model for the library being analyzed
+ */
+ GenerateDartHintsTask(InternalAnalysisContext context, this._units, this.libraryElement) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitGenerateDartHintsTask(this);
+
+ /**
+ * Return a table mapping the sources that were analyzed to the hints that were generated for the
+ * sources, or `null` if the task has not been performed or if the analysis did not complete
+ * normally.
+ *
+ * @return a table mapping the sources that were analyzed to the hints that were generated for the
+ * sources
+ */
+ HashMap<Source, TimestampedData<List<AnalysisError>>> get hintMap => _hintMap;
+
+ @override
+ String get taskDescription {
+ Source librarySource = libraryElement.source;
+ if (librarySource == null) {
+ return "generate Dart hints for library without source";
+ }
+ return "generate Dart hints for ${librarySource.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ //
+ // Gather the compilation units.
+ //
+ int unitCount = _units.length;
+ List<CompilationUnit> compilationUnits = new List<CompilationUnit>(unitCount);
+ for (int i = 0; i < unitCount; i++) {
+ compilationUnits[i] = _units[i].data;
+ }
+ //
+ // Analyze all of the units.
+ //
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ HintGenerator hintGenerator = new HintGenerator(compilationUnits, context, errorListener);
+ hintGenerator.generateForLibrary();
+ //
+ // Store the results.
+ //
+ _hintMap = new HashMap<Source, TimestampedData<List<AnalysisError>>>();
+ for (int i = 0; i < unitCount; i++) {
+ int modificationTime = _units[i].modificationTime;
+ Source source = _units[i].data.element.source;
+ List<AnalysisError> errors = errorListener.getErrorsForSource(source);
+ _hintMap[source] = new TimestampedData<List<AnalysisError>>(modificationTime, errors);
+ }
+ }
+}
+
+/**
+ * Instances of the class `GetContentTask` get the contents of a source.
+ */
+class GetContentTask extends AnalysisTask {
+ /**
+ * The source to be read.
+ */
+ final Source source;
+
+ /**
+ * A flag indicating whether this task is complete.
+ */
+ bool _complete = false;
+
+ /**
+ * The contents of the source.
+ */
+ String _content;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ int _modificationTime = -1;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be parsed
+ * @param contentData the time-stamped contents of the source
+ */
+ GetContentTask(InternalAnalysisContext context, this.source) : super(context) {
+ if (source == null) {
+ throw new IllegalArgumentException("Cannot get contents of null source");
+ }
+ }
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitGetContentTask(this);
+
+ /**
+ * Return the contents of the source, or `null` if the task has not completed or if there
+ * was an exception while getting the contents.
+ *
+ * @return the contents of the source
+ */
+ String get content => _content;
+
+ /**
+ * Return the time at which the contents of the source that was parsed were last modified, or a
+ * negative value if the task has not yet been performed or if an exception occurred.
+ *
+ * @return the time at which the contents of the source that was parsed were last modified
+ */
+ int get modificationTime => _modificationTime;
+
+ /**
+ * Return `true` if this task is complete. Unlike most tasks, this task is allowed to be
+ * visited more than once in order to support asynchronous IO. If the task is not complete when it
+ * is visited synchronously as part of the [AnalysisTask#perform]
+ * method, it will be visited again, using the same visitor, when the IO operation has been
+ * performed.
+ *
+ * @return `true` if this task is complete
+ */
+ bool get isComplete => _complete;
+
+ @override
+ String get taskDescription => "get contents of ${source.fullName}";
+
+ @override
+ void internalPerform() {
+ _complete = true;
+ try {
+ TimestampedData<String> data = context.getContents(source);
+ _content = data.data;
+ _modificationTime = data.modificationTime;
+ } catch (exception, stackTrace) {
+ throw new AnalysisException("Could not get contents of ${source}", new CaughtException(exception, stackTrace));
+ }
+ }
+}
+
+/**
+ * The interface `HtmlEntry` defines the behavior of objects that maintain the information
+ * cached by an analysis context about an individual HTML file.
+ */
+abstract class HtmlEntry implements SourceEntry {
+ /**
+ * The data descriptor representing the information about an Angular application this source is
+ * used in.
+ */
+ static final DataDescriptor<AngularApplication> ANGULAR_APPLICATION = new DataDescriptor<AngularApplication>("HtmlEntry.ANGULAR_APPLICATION");
+
+ /**
+ * The data descriptor representing the information about an Angular component this source is used
+ * as template for.
+ */
+ static final DataDescriptor<AngularComponentElement> ANGULAR_COMPONENT = new DataDescriptor<AngularComponentElement>("HtmlEntry.ANGULAR_COMPONENT");
+
+ /**
+ * The data descriptor representing the information about an Angular application this source is
+ * entry point for.
+ */
+ static final DataDescriptor<AngularApplication> ANGULAR_ENTRY = new DataDescriptor<AngularApplication>("HtmlEntry.ANGULAR_ENTRY");
+
+ /**
+ * The data descriptor representing the errors reported during Angular resolution.
+ */
+ static final DataDescriptor<List<AnalysisError>> ANGULAR_ERRORS = new DataDescriptor<List<AnalysisError>>("HtmlEntry.ANGULAR_ERRORS");
+
+ /**
+ * The data descriptor representing the HTML element.
+ */
+ static final DataDescriptor<HtmlElement> ELEMENT = new DataDescriptor<HtmlElement>("HtmlEntry.ELEMENT");
+
+ /**
+ * The data descriptor representing the hints resulting from auditing the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> HINTS = new DataDescriptor<List<AnalysisError>>("HtmlEntry.HINTS");
+
+ /**
+ * The data descriptor representing the errors resulting from parsing the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> PARSE_ERRORS = new DataDescriptor<List<AnalysisError>>("HtmlEntry.PARSE_ERRORS");
+
+ /**
+ * The data descriptor representing the parsed AST structure.
+ */
+ static final DataDescriptor<ht.HtmlUnit> PARSED_UNIT = new DataDescriptor<ht.HtmlUnit>("HtmlEntry.PARSED_UNIT");
+
+ /**
+ * The data descriptor representing the resolved AST structure.
+ */
+ static final DataDescriptor<ht.HtmlUnit> RESOLVED_UNIT = new DataDescriptor<ht.HtmlUnit>("HtmlEntry.RESOLVED_UNIT");
+
+ /**
+ * The data descriptor representing the list of referenced libraries.
+ */
+ static final DataDescriptor<List<Source>> REFERENCED_LIBRARIES = new DataDescriptor<List<Source>>("HtmlEntry.REFERENCED_LIBRARIES");
+
+ /**
+ * The data descriptor representing the errors resulting from resolving the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> RESOLUTION_ERRORS = new DataDescriptor<List<AnalysisError>>("HtmlEntry.RESOLUTION_ERRORS");
+
+ /**
+ * The data descriptor representing the status of Polymer elements in the source.
+ */
+ static final DataDescriptor<List<AnalysisError>> POLYMER_BUILD_ERRORS = new DataDescriptor<List<AnalysisError>>("HtmlEntry.POLYMER_BUILD_ERRORS");
+
+ /**
+ * The data descriptor representing the errors reported during Polymer resolution.
+ */
+ static final DataDescriptor<List<AnalysisError>> POLYMER_RESOLUTION_ERRORS = new DataDescriptor<List<AnalysisError>>("HtmlEntry.POLYMER_RESOLUTION_ERRORS");
+
+ /**
+ * Return all of the errors associated with the compilation unit that are currently cached.
+ *
+ * @return all of the errors associated with the compilation unit
+ */
+ List<AnalysisError> get allErrors;
+
+ /**
+ * Return a valid parsed unit, either an unresolved AST structure or the result of resolving the
+ * AST structure, or `null` if there is no parsed unit available.
+ *
+ * @return a valid parsed unit
+ */
+ ht.HtmlUnit get anyParsedUnit;
+
+ @override
+ HtmlEntryImpl get writableCopy;
+}
+
+/**
+ * Instances of the class `HtmlEntryImpl` implement an [HtmlEntry].
+ */
+class HtmlEntryImpl extends SourceEntryImpl implements HtmlEntry {
+ /**
+ * The state of the cached parsed (but not resolved) HTML unit.
+ */
+ CacheState _parsedUnitState = CacheState.INVALID;
+
+ /**
+ * The parsed HTML unit, or `null` if the parsed HTML unit is not currently cached.
+ */
+ ht.HtmlUnit _parsedUnit;
+
+ /**
+ * The state of the cached resolved HTML unit.
+ */
+ CacheState _resolvedUnitState = CacheState.INVALID;
+
+ /**
+ * The resolved HTML unit, or `null` if the resolved HTML unit is not currently cached.
+ */
+ ht.HtmlUnit _resolvedUnit;
+
+ /**
+ * The state of the cached parse errors.
+ */
+ CacheState _parseErrorsState = CacheState.INVALID;
+
+ /**
+ * The errors produced while scanning and parsing the HTML, or `null` if the errors are not
+ * currently cached.
+ */
+ List<AnalysisError> _parseErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached resolution errors.
+ */
+ CacheState _resolutionErrorsState = CacheState.INVALID;
+
+ /**
+ * The errors produced while resolving the HTML, or `null` if the errors are not currently
+ * cached.
+ */
+ List<AnalysisError> _resolutionErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached list of referenced libraries.
+ */
+ CacheState _referencedLibrariesState = CacheState.INVALID;
+
+ /**
+ * The list of libraries referenced in the HTML, or `null` if the list is not currently
+ * cached. Note that this list does not include libraries defined directly within the HTML file.
+ */
+ List<Source> _referencedLibraries = Source.EMPTY_ARRAY;
+
+ /**
+ * The state of the cached HTML element.
+ */
+ CacheState _elementState = CacheState.INVALID;
+
+ /**
+ * The element representing the HTML file, or `null` if the element is not currently cached.
+ */
+ HtmlElement _element;
+
+ /**
+ * The state of the [angularApplication].
+ */
+ CacheState _angularApplicationState = CacheState.VALID;
+
+ /**
+ * Information about the Angular Application this unit is used in.
+ */
+ AngularApplication _angularApplication;
+
+ /**
+ * The state of the [angularEntry].
+ */
+ CacheState _angularEntryState = CacheState.INVALID;
+
+ /**
+ * Information about the Angular Application this unit is entry point for.
+ */
+ AngularApplication _angularEntry = null;
+
+ /**
+ * The state of the [angularComponent].
+ */
+ CacheState _angularComponentState = CacheState.VALID;
+
+ /**
+ * Information about the [AngularComponentElement] this unit is used as template for.
+ */
+ AngularComponentElement _angularComponent = null;
+
+ /**
+ * The state of the Angular resolution errors.
+ */
+ CacheState _angularErrorsState = CacheState.INVALID;
+
+ /**
+ * The hints produced while performing Angular resolution, or an empty array if the error are not
+ * currently cached.
+ */
+ List<AnalysisError> _angularErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the cached hints.
+ */
+ CacheState _hintsState = CacheState.INVALID;
+
+ /**
+ * The hints produced while auditing the compilation unit, or an empty array if the hints are not
+ * currently cached.
+ */
+ List<AnalysisError> _hints = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the Polymer elements.
+ */
+ CacheState _polymerBuildErrorsState = CacheState.INVALID;
+
+ /**
+ * The hints produced while performing Polymer HTML elements building, or an empty array if the
+ * error are not currently cached.
+ */
+ List<AnalysisError> _polymerBuildErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * The state of the Polymer resolution errors.
+ */
+ CacheState _polymerResolutionErrorsState = CacheState.INVALID;
+
+ /**
+ * The hints produced while performing Polymer resolution, or an empty array if the error are not
+ * currently cached.
+ */
+ List<AnalysisError> _polymerResolutionErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * Flush any AST structures being maintained by this entry.
+ */
+ void flushAstStructures() {
+ if (_parsedUnitState == CacheState.VALID) {
+ _parsedUnitState = CacheState.FLUSHED;
+ _parsedUnit = null;
+ }
+ if (_resolvedUnitState == CacheState.VALID) {
+ _resolvedUnitState = CacheState.FLUSHED;
+ _resolvedUnit = null;
+ }
+ if (_angularEntryState == CacheState.VALID) {
+ _angularEntryState = CacheState.FLUSHED;
+ }
+ if (_angularErrorsState == CacheState.VALID) {
+ _angularErrorsState = CacheState.FLUSHED;
+ }
+ }
+
+ @override
+ List<AnalysisError> get allErrors {
+ List<AnalysisError> errors = new List<AnalysisError>();
+ if (_parseErrors != null) {
+ for (AnalysisError error in _parseErrors) {
+ errors.add(error);
+ }
+ }
+ if (_resolutionErrors != null) {
+ for (AnalysisError error in _resolutionErrors) {
+ errors.add(error);
+ }
+ }
+ if (_angularErrors != null) {
+ for (AnalysisError error in _angularErrors) {
+ errors.add(error);
+ }
+ }
+ if (_hints != null) {
+ for (AnalysisError error in _hints) {
+ errors.add(error);
+ }
+ }
+ if (_polymerBuildErrors != null) {
+ for (AnalysisError error in _polymerBuildErrors) {
+ errors.add(error);
+ }
+ }
+ if (_polymerResolutionErrors != null) {
+ for (AnalysisError error in _polymerResolutionErrors) {
+ errors.add(error);
+ }
+ }
+ if (errors.length == 0) {
+ return AnalysisError.NO_ERRORS;
+ }
+ return new List.from(errors);
+ }
+
+ @override
+ ht.HtmlUnit get anyParsedUnit {
+ if (_parsedUnitState == CacheState.VALID) {
+ // parsedUnitAccessed = true;
+ return _parsedUnit;
+ }
+ if (_resolvedUnitState == CacheState.VALID) {
+ // resovledUnitAccessed = true;
+ return _resolvedUnit;
+ }
+ return null;
+ }
+
+ @override
+ SourceKind get kind => SourceKind.HTML;
+
+ @override
+ CacheState getState(DataDescriptor descriptor) {
+ if (identical(descriptor, HtmlEntry.ANGULAR_APPLICATION)) {
+ return _angularApplicationState;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_COMPONENT)) {
+ return _angularComponentState;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ENTRY)) {
+ return _angularEntryState;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ERRORS)) {
+ return _angularErrorsState;
+ } else if (identical(descriptor, HtmlEntry.ELEMENT)) {
+ return _elementState;
+ } else if (identical(descriptor, HtmlEntry.PARSE_ERRORS)) {
+ return _parseErrorsState;
+ } else if (identical(descriptor, HtmlEntry.PARSED_UNIT)) {
+ return _parsedUnitState;
+ } else if (identical(descriptor, HtmlEntry.RESOLVED_UNIT)) {
+ return _resolvedUnitState;
+ } else if (identical(descriptor, HtmlEntry.REFERENCED_LIBRARIES)) {
+ return _referencedLibrariesState;
+ } else if (identical(descriptor, HtmlEntry.RESOLUTION_ERRORS)) {
+ return _resolutionErrorsState;
+ } else if (identical(descriptor, HtmlEntry.HINTS)) {
+ return _hintsState;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_BUILD_ERRORS)) {
+ return _polymerBuildErrorsState;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_RESOLUTION_ERRORS)) {
+ return _polymerResolutionErrorsState;
+ }
+ return super.getState(descriptor);
+ }
+
+ @override
+ Object getValue(DataDescriptor descriptor) {
+ if (identical(descriptor, HtmlEntry.ANGULAR_APPLICATION)) {
+ return _angularApplication;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_COMPONENT)) {
+ return _angularComponent;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ENTRY)) {
+ return _angularEntry;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ERRORS)) {
+ return _angularErrors;
+ } else if (identical(descriptor, HtmlEntry.ELEMENT)) {
+ return _element;
+ } else if (identical(descriptor, HtmlEntry.PARSE_ERRORS)) {
+ return _parseErrors;
+ } else if (identical(descriptor, HtmlEntry.PARSED_UNIT)) {
+ return _parsedUnit;
+ } else if (identical(descriptor, HtmlEntry.RESOLVED_UNIT)) {
+ return _resolvedUnit;
+ } else if (identical(descriptor, HtmlEntry.REFERENCED_LIBRARIES)) {
+ return _referencedLibraries;
+ } else if (identical(descriptor, HtmlEntry.RESOLUTION_ERRORS)) {
+ return _resolutionErrors;
+ } else if (identical(descriptor, HtmlEntry.HINTS)) {
+ return _hints;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_BUILD_ERRORS)) {
+ return _polymerBuildErrors;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_RESOLUTION_ERRORS)) {
+ return _polymerResolutionErrors;
+ }
+ return super.getValue(descriptor);
+ }
+
+ @override
+ HtmlEntryImpl get writableCopy {
+ HtmlEntryImpl copy = new HtmlEntryImpl();
+ copy.copyFrom(this);
+ return copy;
+ }
+
+ @override
+ void invalidateAllInformation() {
+ super.invalidateAllInformation();
+ _parseErrors = AnalysisError.NO_ERRORS;
+ _parseErrorsState = CacheState.INVALID;
+ _parsedUnit = null;
+ _parsedUnitState = CacheState.INVALID;
+ _resolvedUnit = null;
+ _resolvedUnitState = CacheState.INVALID;
+ invalidateAllResolutionInformation(true);
+ }
+
+ /**
+ * Invalidate all of the resolution information associated with the HTML file.
+ *
+ * @param invalidateUris true if the cached results of converting URIs to source files should also
+ * be invalidated.
+ */
+ void invalidateAllResolutionInformation(bool invalidateUris) {
+ _angularEntry = null;
+ _angularEntryState = CacheState.INVALID;
+ _angularErrors = AnalysisError.NO_ERRORS;
+ _angularErrorsState = CacheState.INVALID;
+ _polymerBuildErrors = AnalysisError.NO_ERRORS;
+ _polymerBuildErrorsState = CacheState.INVALID;
+ _polymerResolutionErrors = AnalysisError.NO_ERRORS;
+ _polymerResolutionErrorsState = CacheState.INVALID;
+ _element = null;
+ _elementState = CacheState.INVALID;
+ _resolutionErrors = AnalysisError.NO_ERRORS;
+ _resolutionErrorsState = CacheState.INVALID;
+ _hints = AnalysisError.NO_ERRORS;
+ _hintsState = CacheState.INVALID;
+ if (invalidateUris) {
+ _referencedLibraries = Source.EMPTY_ARRAY;
+ _referencedLibrariesState = CacheState.INVALID;
+ }
+ }
+
+ @override
+ void recordContentError(CaughtException exception) {
+ super.recordContentError(exception);
+ recordParseError(exception);
+ }
+
+ /**
+ * Record that an error was encountered while attempting to parse the source associated with this
+ * entry.
+ *
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordParseError(CaughtException exception) {
+ // If the scanning and parsing of HTML are separated, the following line can be removed.
+ recordScanError(exception);
+ _parseErrors = AnalysisError.NO_ERRORS;
+ _parseErrorsState = CacheState.ERROR;
+ _parsedUnit = null;
+ _parsedUnitState = CacheState.ERROR;
+ _referencedLibraries = Source.EMPTY_ARRAY;
+ _referencedLibrariesState = CacheState.ERROR;
+ recordResolutionError(exception);
+ }
+
+ /**
+ * Record that an error was encountered while attempting to resolve the source associated with
+ * this entry.
+ *
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordResolutionError(CaughtException exception) {
+ this.exception = exception;
+ _angularErrors = AnalysisError.NO_ERRORS;
+ _angularErrorsState = CacheState.ERROR;
+ _resolvedUnit = null;
+ _resolvedUnitState = CacheState.ERROR;
+ _element = null;
+ _elementState = CacheState.ERROR;
+ _resolutionErrors = AnalysisError.NO_ERRORS;
+ _resolutionErrorsState = CacheState.ERROR;
+ _hints = AnalysisError.NO_ERRORS;
+ _hintsState = CacheState.ERROR;
+ _polymerBuildErrors = AnalysisError.NO_ERRORS;
+ _polymerBuildErrorsState = CacheState.ERROR;
+ _polymerResolutionErrors = AnalysisError.NO_ERRORS;
+ _polymerResolutionErrorsState = CacheState.ERROR;
+ }
+
+ @override
+ void setState(DataDescriptor descriptor, CacheState state) {
+ if (identical(descriptor, HtmlEntry.ANGULAR_APPLICATION)) {
+ _angularApplication = updatedValue(state, _angularApplication, null);
+ _angularApplicationState = state;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_COMPONENT)) {
+ _angularComponent = updatedValue(state, _angularComponent, null);
+ _angularComponentState = state;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ENTRY)) {
+ _angularEntry = updatedValue(state, _angularEntry, null);
+ _angularEntryState = state;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ERRORS)) {
+ _angularErrors = updatedValue(state, _angularErrors, null);
+ _angularErrorsState = state;
+ } else if (identical(descriptor, HtmlEntry.ELEMENT)) {
+ _element = updatedValue(state, _element, null);
+ _elementState = state;
+ } else if (identical(descriptor, HtmlEntry.PARSE_ERRORS)) {
+ _parseErrors = updatedValue(state, _parseErrors, null);
+ _parseErrorsState = state;
+ } else if (identical(descriptor, HtmlEntry.PARSED_UNIT)) {
+ _parsedUnit = updatedValue(state, _parsedUnit, null);
+ _parsedUnitState = state;
+ } else if (identical(descriptor, HtmlEntry.RESOLVED_UNIT)) {
+ _resolvedUnit = updatedValue(state, _resolvedUnit, null);
+ _resolvedUnitState = state;
+ } else if (identical(descriptor, HtmlEntry.REFERENCED_LIBRARIES)) {
+ _referencedLibraries = updatedValue(state, _referencedLibraries, Source.EMPTY_ARRAY);
+ _referencedLibrariesState = state;
+ } else if (identical(descriptor, HtmlEntry.RESOLUTION_ERRORS)) {
+ _resolutionErrors = updatedValue(state, _resolutionErrors, AnalysisError.NO_ERRORS);
+ _resolutionErrorsState = state;
+ } else if (identical(descriptor, HtmlEntry.HINTS)) {
+ _hints = updatedValue(state, _hints, AnalysisError.NO_ERRORS);
+ _hintsState = state;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_BUILD_ERRORS)) {
+ _polymerBuildErrors = updatedValue(state, _polymerBuildErrors, null);
+ _polymerBuildErrorsState = state;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_RESOLUTION_ERRORS)) {
+ _polymerResolutionErrors = updatedValue(state, _polymerResolutionErrors, null);
+ _polymerResolutionErrorsState = state;
+ } else {
+ super.setState(descriptor, state);
+ }
+ }
+
+ @override
+ void setValue(DataDescriptor descriptor, Object value) {
+ if (identical(descriptor, HtmlEntry.ANGULAR_APPLICATION)) {
+ _angularApplication = value as AngularApplication;
+ _angularApplicationState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_COMPONENT)) {
+ _angularComponent = value as AngularComponentElement;
+ _angularComponentState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ENTRY)) {
+ _angularEntry = value as AngularApplication;
+ _angularEntryState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.ANGULAR_ERRORS)) {
+ _angularErrors = value as List<AnalysisError>;
+ _angularErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.ELEMENT)) {
+ _element = value as HtmlElement;
+ _elementState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.PARSE_ERRORS)) {
+ _parseErrors = value as List<AnalysisError>;
+ _parseErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.PARSED_UNIT)) {
+ _parsedUnit = value as ht.HtmlUnit;
+ _parsedUnitState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.RESOLVED_UNIT)) {
+ _resolvedUnit = value as ht.HtmlUnit;
+ _resolvedUnitState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.REFERENCED_LIBRARIES)) {
+ _referencedLibraries = value == null ? Source.EMPTY_ARRAY : (value as List<Source>);
+ _referencedLibrariesState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.RESOLUTION_ERRORS)) {
+ _resolutionErrors = value as List<AnalysisError>;
+ _resolutionErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.HINTS)) {
+ _hints = value as List<AnalysisError>;
+ _hintsState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_BUILD_ERRORS)) {
+ _polymerBuildErrors = value as List<AnalysisError>;
+ _polymerBuildErrorsState = CacheState.VALID;
+ } else if (identical(descriptor, HtmlEntry.POLYMER_RESOLUTION_ERRORS)) {
+ _polymerResolutionErrors = value as List<AnalysisError>;
+ _polymerResolutionErrorsState = CacheState.VALID;
+ } else {
+ super.setValue(descriptor, value);
+ }
+ }
+
+ @override
+ void copyFrom(SourceEntryImpl entry) {
+ super.copyFrom(entry);
+ HtmlEntryImpl other = entry as HtmlEntryImpl;
+ _angularApplicationState = other._angularApplicationState;
+ _angularApplication = other._angularApplication;
+ _angularComponentState = other._angularComponentState;
+ _angularComponent = other._angularComponent;
+ _angularEntryState = other._angularEntryState;
+ _angularEntry = other._angularEntry;
+ _angularErrorsState = other._angularErrorsState;
+ _angularErrors = other._angularErrors;
+ _parseErrorsState = other._parseErrorsState;
+ _parseErrors = other._parseErrors;
+ _parsedUnitState = other._parsedUnitState;
+ _parsedUnit = other._parsedUnit;
+ _resolvedUnitState = other._resolvedUnitState;
+ _resolvedUnit = other._resolvedUnit;
+ _referencedLibrariesState = other._referencedLibrariesState;
+ _referencedLibraries = other._referencedLibraries;
+ _resolutionErrorsState = other._resolutionErrorsState;
+ _resolutionErrors = other._resolutionErrors;
+ _elementState = other._elementState;
+ _element = other._element;
+ _hintsState = other._hintsState;
+ _hints = other._hints;
+ _polymerBuildErrorsState = other._polymerBuildErrorsState;
+ _polymerBuildErrors = other._polymerBuildErrors;
+ _polymerResolutionErrorsState = other._polymerResolutionErrorsState;
+ _polymerResolutionErrors = other._polymerResolutionErrors;
+ }
+
+ @override
+ bool get hasErrorState => super.hasErrorState || _parsedUnitState == CacheState.ERROR || _resolvedUnitState == CacheState.ERROR || _parseErrorsState == CacheState.ERROR || _resolutionErrorsState == CacheState.ERROR || _referencedLibrariesState == CacheState.ERROR || _elementState == CacheState.ERROR || _angularErrorsState == CacheState.ERROR || _hintsState == CacheState.ERROR || _polymerBuildErrorsState == CacheState.ERROR || _polymerResolutionErrorsState == CacheState.ERROR;
+
+ @override
+ bool writeDiffOn(JavaStringBuilder builder, SourceEntry oldEntry) {
+ bool needsSeparator = super.writeDiffOn(builder, oldEntry);
+ if (oldEntry is! HtmlEntryImpl) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append("entry type changed; was ${oldEntry.runtimeType.toString()}");
+ return true;
+ }
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.PARSE_ERRORS, "parseErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.PARSED_UNIT, "parsedUnit");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.RESOLVED_UNIT, "resolvedUnit");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.RESOLUTION_ERRORS, "resolutionErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.REFERENCED_LIBRARIES, "referencedLibraries");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.ELEMENT, "element");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.ANGULAR_APPLICATION, "angularApplicationState");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.ANGULAR_COMPONENT, "angularComponent");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.ANGULAR_ENTRY, "angularEntry");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.ANGULAR_ERRORS, "angularErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.POLYMER_BUILD_ERRORS, "polymerBuildErrors");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, HtmlEntry.POLYMER_RESOLUTION_ERRORS, "polymerResolutionErrors");
+ return needsSeparator;
+ }
+
+ @override
+ void writeOn(JavaStringBuilder builder) {
+ builder.append("Html: ");
+ super.writeOn(builder);
+ builder.append("; parseErrors = ");
+ builder.append(_parseErrorsState);
+ builder.append("; parsedUnit = ");
+ builder.append(_parsedUnitState);
+ builder.append("; resolvedUnit = ");
+ builder.append(_resolvedUnitState);
+ builder.append("; resolutionErrors = ");
+ builder.append(_resolutionErrorsState);
+ builder.append("; referencedLibraries = ");
+ builder.append(_referencedLibrariesState);
+ builder.append("; element = ");
+ builder.append(_elementState);
+ builder.append("; angularApplication = ");
+ builder.append(_angularApplicationState);
+ builder.append("; angularComponent = ");
+ builder.append(_angularComponentState);
+ builder.append("; angularEntry = ");
+ builder.append(_angularEntryState);
+ builder.append("; angularErrors = ");
+ builder.append(_angularErrorsState);
+ builder.append("; polymerBuildErrors = ");
+ builder.append(_polymerBuildErrorsState);
+ builder.append("; polymerResolutionErrors = ");
+ builder.append(_polymerResolutionErrorsState);
+ }
+}
+
+/**
+ * Instances of the class `IncrementalAnalysisCache` hold information used to perform
+ * incremental analysis.
+ *
+ * @see AnalysisContextImpl#setChangedContents(Source, String, int, int, int)
+ */
+class IncrementalAnalysisCache {
+ /**
+ * Determine if the incremental analysis result can be cached for the next incremental analysis.
+ *
+ * @param cache the prior incremental analysis cache
+ * @param unit the incrementally updated compilation unit
+ * @return the cache used for incremental analysis or `null` if incremental analysis results
+ * cannot be cached for the next incremental analysis
+ */
+ static IncrementalAnalysisCache cacheResult(IncrementalAnalysisCache cache, CompilationUnit unit) {
+ if (cache != null && unit != null) {
+ return new IncrementalAnalysisCache(cache.librarySource, cache.source, unit, cache._newContents, cache._newContents, 0, 0, 0);
+ }
+ return null;
+ }
+
+ /**
+ * Determine if the cache should be cleared.
+ *
+ * @param cache the prior cache or `null` if none
+ * @param source the source being updated (not `null`)
+ * @return the cache used for incremental analysis or `null` if incremental analysis cannot
+ * be performed
+ */
+ static IncrementalAnalysisCache clear(IncrementalAnalysisCache cache, Source source) {
+ if (cache == null || cache.source == source) {
+ return null;
+ }
+ return cache;
+ }
+
+ /**
+ * Determine if incremental analysis can be performed from the given information.
+ *
+ * @param cache the prior cache or `null` if none
+ * @param source the source being updated (not `null`)
+ * @param oldContents the original source contents prior to this update (may be `null`)
+ * @param newContents the new contents after this incremental change (not `null`)
+ * @param offset the offset at which the change occurred
+ * @param oldLength the length of the text being replaced
+ * @param newLength the length of the replacement text
+ * @param sourceEntry the cached entry for the given source or `null` if none
+ * @return the cache used for incremental analysis or `null` if incremental analysis cannot
+ * be performed
+ */
+ static IncrementalAnalysisCache update(IncrementalAnalysisCache cache, Source source, String oldContents, String newContents, int offset, int oldLength, int newLength, SourceEntry sourceEntry) {
+ // Determine the cache resolved unit
+ Source librarySource = null;
+ CompilationUnit unit = null;
+ if (sourceEntry is DartEntryImpl) {
+ DartEntryImpl dartEntry = sourceEntry;
+ List<Source> librarySources = dartEntry.librariesContaining;
+ if (librarySources.length == 1) {
+ librarySource = librarySources[0];
+ if (librarySource != null) {
+ unit = dartEntry.getValueInLibrary(DartEntry.RESOLVED_UNIT, librarySource);
+ }
+ }
+ }
+ // Create a new cache if there is not an existing cache or the source is different
+ // or a new resolved compilation unit is available
+ if (cache == null || cache.source != source || unit != null) {
+ if (unit == null) {
+ return null;
+ }
+ if (oldContents == null) {
+ if (oldLength != 0) {
+ return null;
+ }
+ oldContents = "${newContents.substring(0, offset)}${newContents.substring(offset + newLength)}";
+ }
+ return new IncrementalAnalysisCache(librarySource, source, unit, oldContents, newContents, offset, oldLength, newLength);
+ }
+ // Update the existing cache if the change is contiguous
+ if (cache._oldLength == 0 && cache._newLength == 0) {
+ cache._offset = offset;
+ cache._oldLength = oldLength;
+ cache._newLength = newLength;
+ } else {
+ if (cache._offset > offset || offset > cache._offset + cache._newLength) {
+ return null;
+ }
+ cache._newLength += newLength - oldLength;
+ }
+ cache._newContents = newContents;
+ return cache;
+ }
+
+ /**
+ * Verify that the incrementally parsed and resolved unit in the incremental cache is structurally
+ * equivalent to the fully parsed unit.
+ *
+ * @param cache the prior cache or `null` if none
+ * @param source the source of the compilation unit that was parsed (not `null`)
+ * @param unit the compilation unit that was just parsed
+ * @return the cache used for incremental analysis or `null` if incremental analysis results
+ * cannot be cached for the next incremental analysis
+ */
+ static IncrementalAnalysisCache verifyStructure(IncrementalAnalysisCache cache, Source source, CompilationUnit unit) {
+ if (cache != null && unit != null && cache.source == source) {
+ if (!AstComparator.equalNodes(cache.resolvedUnit, unit)) {
+ return null;
+ }
+ }
+ return cache;
+ }
+
+ final Source librarySource;
+
+ final Source source;
+
+ final String oldContents;
+
+ final CompilationUnit resolvedUnit;
+
+ String _newContents;
+
+ int _offset = 0;
+
+ int _oldLength = 0;
+
+ int _newLength = 0;
+
+ IncrementalAnalysisCache(this.librarySource, this.source, this.resolvedUnit, this.oldContents, String newContents, int offset, int oldLength, int newLength) {
+ this._newContents = newContents;
+ this._offset = offset;
+ this._oldLength = oldLength;
+ this._newLength = newLength;
+ }
+
+ /**
+ * Return the current contents for the receiver's source.
+ *
+ * @return the contents (not `null`)
+ */
+ String get newContents => _newContents;
+
+ /**
+ * Return the number of characters in the replacement text.
+ *
+ * @return the replacement length (zero or greater)
+ */
+ int get newLength => _newLength;
+
+ /**
+ * Return the character position of the first changed character.
+ *
+ * @return the offset (zero or greater)
+ */
+ int get offset => _offset;
+
+ /**
+ * Return the number of characters that were replaced.
+ *
+ * @return the replaced length (zero or greater)
+ */
+ int get oldLength => _oldLength;
+
+ /**
+ * Determine if the cache contains source changes that need to be analyzed
+ *
+ * @return `true` if the cache contains changes to be analyzed, else `false`
+ */
+ bool get hasWork => _oldLength > 0 || _newLength > 0;
+}
+
+/**
+ * Instances of the class `IncrementalAnalysisTask` incrementally update existing analysis.
+ */
+class IncrementalAnalysisTask extends AnalysisTask {
+ /**
+ * The information used to perform incremental analysis.
+ */
+ final IncrementalAnalysisCache cache;
+
+ /**
+ * The compilation unit that was produced by incrementally updating the existing unit.
+ */
+ CompilationUnit _updatedUnit;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param cache the incremental analysis cache used to perform the analysis
+ */
+ IncrementalAnalysisTask(InternalAnalysisContext context, this.cache) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitIncrementalAnalysisTask(this);
+
+ /**
+ * Return the compilation unit that was produced by incrementally updating the existing
+ * compilation unit, or `null` if the task has not yet been performed, could not be
+ * performed, or if an exception occurred.
+ *
+ * @return the compilation unit
+ */
+ CompilationUnit get compilationUnit => _updatedUnit;
+
+ /**
+ * Return the source that is to be incrementally analyzed.
+ *
+ * @return the source
+ */
+ Source get source => cache != null ? cache.source : null;
+
+ @override
+ String get taskDescription => "incremental analysis ${(cache != null ? cache.source : "null")}";
+
+ @override
+ void internalPerform() {
+ if (cache == null) {
+ return;
+ }
+ // Only handle small changes
+ if (cache.oldLength > 0 || cache.newLength > 30) {
+ return;
+ }
+ // Produce an updated token stream
+ CharacterReader reader = new CharSequenceReader(cache.newContents);
+ BooleanErrorListener errorListener = new BooleanErrorListener();
+ IncrementalScanner scanner = new IncrementalScanner(cache.source, reader, errorListener);
+ scanner.rescan(cache.resolvedUnit.beginToken, cache.offset, cache.oldLength, cache.newLength);
+ if (errorListener.errorReported) {
+ return;
+ }
+ // Produce an updated AST
+ IncrementalParser parser = new IncrementalParser(cache.source, scanner.tokenMap, AnalysisErrorListener.NULL_LISTENER);
+ _updatedUnit = parser.reparse(cache.resolvedUnit, scanner.leftToken, scanner.rightToken, cache.offset, cache.offset + cache.oldLength);
+ // Update the resolution
+ TypeProvider typeProvider = this.typeProvider;
+ if (_updatedUnit != null && typeProvider != null) {
+ CompilationUnitElement element = _updatedUnit.element;
+ if (element != null) {
+ LibraryElement library = element.library;
+ if (library != null) {
+ IncrementalResolver resolver = new IncrementalResolver(library, cache.source, typeProvider, errorListener);
+ resolver.resolve(parser.updatedNode);
+ }
+ }
+ }
+ }
+
+ /**
+ * Return the type provider used for incremental resolution.
+ *
+ * @return the type provider (or `null` if an exception occurs)
+ */
+ TypeProvider get typeProvider {
+ try {
+ return context.typeProvider;
+ } on AnalysisException catch (exception) {
+ return null;
+ }
+ }
+}
+
+/**
+ * Instances of the class `InstrumentedAnalysisContextImpl` implement an
+ * [AnalysisContext] by recording instrumentation data and delegating to
+ * another analysis context to do the non-instrumentation work.
+ */
+class InstrumentedAnalysisContextImpl implements InternalAnalysisContext {
+ /**
+ * If the current thread is the UI thread, then note this in the specified instrumentation and
+ * append this information to the log.
+ *
+ * @param instrumentation the instrumentation, not `null`
+ */
+ static void _checkThread(InstrumentationBuilder instrumentation) {
+ }
+
+ /**
+ * Record an exception that was thrown during analysis.
+ *
+ * @param instrumentation the instrumentation builder being used to record the exception
+ * @param exception the exception being reported
+ */
+ static void _recordAnalysisException(InstrumentationBuilder instrumentation, CaughtException exception) {
+ instrumentation.record(exception);
+ }
+
+ /**
+ * The unique identifier used to identify this analysis context in the instrumentation data.
+ */
+ String _contextId = UUID.randomUUID().toString();
+
+ /**
+ * The analysis context to which all of the non-instrumentation work is delegated.
+ */
+ InternalAnalysisContext _basis;
+
+ /**
+ * Create a new [InstrumentedAnalysisContextImpl] which wraps a new
+ * [AnalysisContextImpl] as the basis context.
+ */
+ InstrumentedAnalysisContextImpl() : this.con1(new AnalysisContextImpl());
+
+ /**
+ * Create a new [InstrumentedAnalysisContextImpl] with a specified basis context, aka the
+ * context to wrap and instrument.
+ *
+ * @param context some [InstrumentedAnalysisContext] to wrap and instrument
+ */
+ InstrumentedAnalysisContextImpl.con1(InternalAnalysisContext context) {
+ _basis = context;
+ }
+
+ @override
+ void addListener(AnalysisListener listener) {
+ _basis.addListener(listener);
+ }
+
+ @override
+ void addSourceInfo(Source source, SourceEntry info) {
+ _basis.addSourceInfo(source, info);
+ }
+
+ @override
+ void applyAnalysisDelta(AnalysisDelta delta) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-updateAnalysis");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.applyAnalysisDelta(delta);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ void applyChanges(ChangeSet changeSet) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-applyChanges");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.applyChanges(changeSet);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ String computeDocumentationComment(Element element) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-computeDocumentationComment");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.computeDocumentationComment(element);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<AnalysisError> computeErrors(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-computeErrors");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<AnalysisError> errors = _basis.computeErrors(source);
+ instrumentation.metric2("Errors-count", errors.length);
+ return errors;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> computeExportedLibraries(Source source) => _basis.computeExportedLibraries(source);
+
+ @override
+ HtmlElement computeHtmlElement(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-computeHtmlElement");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.computeHtmlElement(source);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> computeImportedLibraries(Source source) => _basis.computeImportedLibraries(source);
+
+ @override
+ SourceKind computeKindOf(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-computeKindOf");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.computeKindOf(source);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ LibraryElement computeLibraryElement(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-computeLibraryElement");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.computeLibraryElement(source);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ LineInfo computeLineInfo(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-computeLineInfo");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.computeLineInfo(source);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ ResolvableCompilationUnit computeResolvableCompilationUnit(Source source) => _basis.computeResolvableCompilationUnit(source);
+
+ @override
+ void dispose() {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-dispose");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.dispose();
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ bool exists(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-exists");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.exists(source);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ AnalysisContext extractContext(SourceContainer container) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-extractContext");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ InstrumentedAnalysisContextImpl newContext = new InstrumentedAnalysisContextImpl();
+ _basis.extractContextInto(container, newContext._basis);
+ return newContext;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ InternalAnalysisContext extractContextInto(SourceContainer container, InternalAnalysisContext newContext) => _basis.extractContextInto(container, newContext);
+
+ @override
+ AnalysisOptions get analysisOptions {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getAnalysisOptions");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.analysisOptions;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ AngularApplication getAngularApplicationWithHtml(Source htmlSource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getAngularApplication");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getAngularApplicationWithHtml(htmlSource);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ /**
+ * @return the underlying [AnalysisContext].
+ */
+ AnalysisContext get basis => _basis;
+
+ @override
+ CompilationUnitElement getCompilationUnitElement(Source unitSource, Source librarySource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getCompilationUnitElement");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getCompilationUnitElement(unitSource, librarySource);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ TimestampedData<String> getContents(Source source) => _basis.getContents(source);
+
+ @override
+ DeclaredVariables get declaredVariables => _basis.declaredVariables;
+
+ @override
+ Element getElement(ElementLocation location) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getElement");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getElement(location);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ AnalysisErrorInfo getErrors(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getErrors");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ AnalysisErrorInfo ret = _basis.getErrors(source);
+ if (ret != null) {
+ instrumentation.metric2("Errors-count", ret.errors.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ HtmlElement getHtmlElement(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getHtmlElement");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getHtmlElement(source);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> getHtmlFilesReferencing(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getHtmlFilesReferencing");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<Source> ret = _basis.getHtmlFilesReferencing(source);
+ if (ret != null) {
+ instrumentation.metric2("Source-count", ret.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> get htmlSources {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getHtmlSources");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<Source> ret = _basis.htmlSources;
+ if (ret != null) {
+ instrumentation.metric2("Source-count", ret.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ SourceKind getKindOf(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getKindOf");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getKindOf(source);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> get launchableClientLibrarySources {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLaunchableClientLibrarySources");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<Source> ret = _basis.launchableClientLibrarySources;
+ if (ret != null) {
+ instrumentation.metric2("Source-count", ret.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> get launchableServerLibrarySources {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLaunchableServerLibrarySources");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<Source> ret = _basis.launchableServerLibrarySources;
+ if (ret != null) {
+ instrumentation.metric2("Source-count", ret.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> getLibrariesContaining(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLibrariesContaining");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<Source> ret = _basis.getLibrariesContaining(source);
+ if (ret != null) {
+ instrumentation.metric2("Source-count", ret.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log2(2);
+ }
+ }
+
+ @override
+ List<Source> getLibrariesDependingOn(Source librarySource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLibrariesDependingOn");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<Source> ret = _basis.getLibrariesDependingOn(librarySource);
+ if (ret != null) {
+ instrumentation.metric2("Source-count", ret.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> getLibrariesReferencedFromHtml(Source htmlSource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLibrariesReferencedFromHtml");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getLibrariesReferencedFromHtml(htmlSource);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ LibraryElement getLibraryElement(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLibraryElement");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getLibraryElement(source);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> get librarySources {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLibrarySources");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ List<Source> ret = _basis.librarySources;
+ if (ret != null) {
+ instrumentation.metric2("Source-count", ret.length);
+ }
+ return ret;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ LineInfo getLineInfo(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getLineInfo");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getLineInfo(source);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ int getModificationStamp(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getModificationStamp");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getModificationStamp(source);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ List<Source> get prioritySources {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getPrioritySources");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.prioritySources;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ Namespace getPublicNamespace(LibraryElement library) => _basis.getPublicNamespace(library);
+
+ @override
+ List<Source> get refactoringUnsafeSources {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getRefactoringUnsafeSources");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.refactoringUnsafeSources;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ CompilationUnit getResolvedCompilationUnit(Source unitSource, LibraryElement library) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getResolvedCompilationUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getResolvedCompilationUnit(unitSource, library);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ CompilationUnit getResolvedCompilationUnit2(Source unitSource, Source librarySource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getResolvedCompilationUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getResolvedCompilationUnit2(unitSource, librarySource);
+ } finally {
+ instrumentation.log2(2);
+ }
+ }
+
+ @override
+ ht.HtmlUnit getResolvedHtmlUnit(Source htmlSource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getResolvedHtmlUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.getResolvedHtmlUnit(htmlSource);
+ } finally {
+ instrumentation.log2(2);
+ }
+ }
+
+ @override
+ SourceFactory get sourceFactory {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-getSourceFactory");
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.sourceFactory;
+ } finally {
+ instrumentation.log2(2);
+ }
+ }
+
+ @override
+ AnalysisContextStatistics get statistics => _basis.statistics;
+
+ @override
+ TypeProvider get typeProvider => _basis.typeProvider;
+
+ @override
+ bool isClientLibrary(Source librarySource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-isClientLibrary");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.isClientLibrary(librarySource);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ bool get isDisposed {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-isDisposed");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.isDisposed;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ bool isServerLibrary(Source librarySource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-isServerLibrary");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.isServerLibrary(librarySource);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ void mergeContext(AnalysisContext context) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-mergeContext");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ if (context is InstrumentedAnalysisContextImpl) {
+ context = (context as InstrumentedAnalysisContextImpl)._basis;
+ }
+ _basis.mergeContext(context);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ CompilationUnit parseCompilationUnit(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-parseCompilationUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.parseCompilationUnit(source);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ ht.HtmlUnit parseHtmlUnit(Source source) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-parseHtmlUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.parseHtmlUnit(source);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ AnalysisResult performAnalysisTask() {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-performAnalysisTask");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ AnalysisResult result = _basis.performAnalysisTask();
+ if (result.changeNotices != null) {
+ instrumentation.metric2("ChangeNotice-count", result.changeNotices.length);
+ }
+ return result;
+ } finally {
+ instrumentation.log2(2);
+ }
+ }
+
+ @override
+ void recordLibraryElements(Map<Source, LibraryElement> elementMap) {
+ _basis.recordLibraryElements(elementMap);
+ }
+
+ @override
+ void removeListener(AnalysisListener listener) {
+ _basis.removeListener(listener);
+ }
+
+ @override
+ CompilationUnit resolveCompilationUnit(Source unitSource, LibraryElement library) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-resolveCompilationUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.resolveCompilationUnit(unitSource, library);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ CompilationUnit resolveCompilationUnit2(Source unitSource, Source librarySource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-resolveCompilationUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.resolveCompilationUnit2(unitSource, librarySource);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ ht.HtmlUnit resolveHtmlUnit(Source htmlSource) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-resolveHtmlUnit");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ return _basis.resolveHtmlUnit(htmlSource);
+ } on AnalysisException catch (e, stackTrace) {
+ _recordAnalysisException(instrumentation, new CaughtException(e, stackTrace));
+ throw e;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ void set analysisOptions(AnalysisOptions options) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-setAnalysisOptions");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.analysisOptions = options;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ void set analysisPriorityOrder(List<Source> sources) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-setAnalysisPriorityOrder");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.analysisPriorityOrder = sources;
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ void setChangedContents(Source source, String contents, int offset, int oldLength, int newLength) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-setChangedContents");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.setChangedContents(source, contents, offset, oldLength, newLength);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ void setContents(Source source, String contents) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-setContents");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.setContents(source, contents);
+ } finally {
+ instrumentation.log();
+ }
+ }
+
+ @override
+ void set sourceFactory(SourceFactory factory) {
+ InstrumentationBuilder instrumentation = Instrumentation.builder2("Analysis-setSourceFactory");
+ _checkThread(instrumentation);
+ try {
+ instrumentation.metric3("contextId", _contextId);
+ _basis.sourceFactory = factory;
+ } finally {
+ instrumentation.log();
+ }
+ }
+}
+
+/**
+ * The interface `InternalAnalysisContext` defines additional behavior for an analysis context
+ * that is required by internal users of the context.
+ */
+abstract class InternalAnalysisContext implements AnalysisContext {
+ /**
+ * Add the given source with the given information to this context.
+ *
+ * @param source the source to be added
+ * @param info the information about the source
+ */
+ void addSourceInfo(Source source, SourceEntry info);
+
+ /**
+ * Return an array containing the sources of the libraries that are exported by the library with
+ * the given source. The array will be empty if the given source is invalid, if the given source
+ * does not represent a library, or if the library does not export any other libraries.
+ *
+ * @param source the source representing the library whose exports are to be returned
+ * @return the sources of the libraries that are exported by the given library
+ * @throws AnalysisException if the exported libraries could not be computed
+ */
+ List<Source> computeExportedLibraries(Source source);
+
+ /**
+ * Return an array containing the sources of the libraries that are imported by the library with
+ * the given source. The array will be empty if the given source is invalid, if the given source
+ * does not represent a library, or if the library does not import any other libraries.
+ *
+ * @param source the source representing the library whose imports are to be returned
+ * @return the sources of the libraries that are imported by the given library
+ * @throws AnalysisException if the imported libraries could not be computed
+ */
+ List<Source> computeImportedLibraries(Source source);
+
+ /**
+ * Return an AST structure corresponding to the given source, but ensure that the structure has
+ * not already been resolved and will not be resolved by any other threads or in any other
+ * library.
+ *
+ * <b>Note:</b> This method cannot be used in an async environment
+ *
+ * @param source the compilation unit for which an AST structure should be returned
+ * @return the AST structure representing the content of the source
+ * @throws AnalysisException if the analysis could not be performed
+ */
+ ResolvableCompilationUnit computeResolvableCompilationUnit(Source source);
+
+ /**
+ * Initialize the specified context by removing the specified sources from the receiver and adding
+ * them to the specified context.
+ *
+ * @param container the container containing sources that should be removed from this context and
+ * added to the returned context
+ * @param newContext the context to be initialized
+ * @return the analysis context that was initialized
+ */
+ InternalAnalysisContext extractContextInto(SourceContainer container, InternalAnalysisContext newContext);
+
+ /**
+ * Return an array containing all of the sources that have been marked as priority sources.
+ * Clients must not modify the returned array.
+ *
+ * @return the sources that have been marked as priority sources
+ */
+ List<Source> get prioritySources;
+
+ /**
+ * Return a namespace containing mappings for all of the public names defined by the given
+ * library.
+ *
+ * @param library the library whose public namespace is to be returned
+ * @return the public namespace of the given library
+ */
+ Namespace getPublicNamespace(LibraryElement library);
+
+ /**
+ * Returns a statistics about this context.
+ */
+ AnalysisContextStatistics get statistics;
+
+ /**
+ * Returns a type provider for this context or throws an exception if dart:core cannot be
+ * resolved.
+ *
+ * @return the type provider (not `null`)
+ * @throws AnalysisException if dart:core cannot be resolved
+ */
+ TypeProvider get typeProvider;
+
+ /**
+ * Given a table mapping the source for the libraries represented by the corresponding elements to
+ * the elements representing the libraries, record those mappings.
+ *
+ * @param elementMap a table mapping the source for the libraries represented by the elements to
+ * the elements representing the libraries
+ */
+ void recordLibraryElements(Map<Source, LibraryElement> elementMap);
+}
+
+/**
+ * The interface `Logger` defines the behavior of objects that can be used to receive
+ * information about errors within the analysis engine. Implementations usually write this
+ * information to a file, but can also record the information for later use (such as during testing)
+ * or even ignore the information.
+ */
+abstract class Logger {
+ static final Logger NULL = new Logger_NullLogger();
+
+ /**
+ * Log the given message as an error.
+ *
+ * @param message an explanation of why the error occurred or what it means
+ */
+ void logError(String message);
+
+ /**
+ * Log the given exception as one representing an error.
+ *
+ * @param message an explanation of why the error occurred or what it means
+ * @param exception the exception being logged
+ */
+ void logError2(String message, Exception exception);
+
+ /**
+ * Log the given informational message.
+ *
+ * @param message an explanation of why the error occurred or what it means
+ * @param exception the exception being logged
+ */
+ void logInformation(String message);
+
+ /**
+ * Log the given exception as one representing an informational message.
+ *
+ * @param message an explanation of why the error occurred or what it means
+ * @param exception the exception being logged
+ */
+ void logInformation2(String message, Exception exception);
+}
+
+/**
+ * Implementation of [Logger] that does nothing.
+ */
+class Logger_NullLogger implements Logger {
+ @override
+ void logError(String message) {
+ }
+
+ @override
+ void logError2(String message, Exception exception) {
+ }
+
+ @override
+ void logInformation(String message) {
+ }
+
+ @override
+ void logInformation2(String message, Exception exception) {
+ }
+}
+
+/**
+ * [NgComponentElementProcessor] applies [AngularComponentElement] by parsing mapped
+ * attributes as expressions.
+ */
+class NgComponentElementProcessor extends NgDirectiveProcessor {
+ final AngularComponentElement _element;
+
+ NgComponentElementProcessor(this._element);
+
+ @override
+ void apply(AngularHtmlUnitResolver resolver, ht.XmlTagNode node) {
+ node.element = _element.selector;
+ for (AngularPropertyElement property in _element.properties) {
+ String name = property.name;
+ ht.XmlAttributeNode attribute = node.getAttribute(name);
+ if (attribute != null) {
+ attribute.element = property;
+ // resolve if binding
+ if (property.propertyKind != AngularPropertyKind.ATTR) {
+ AngularExpression expression = parseAngularExpression(resolver, attribute);
+ resolver._resolveExpression(expression);
+ setAngularExpression(attribute, expression);
+ }
+ }
+ }
+ }
+
+ @override
+ bool canApply(ht.XmlTagNode node) => _element.selector.apply(node);
+}
+
+/**
+ * [NgControllerElementProcessor] applies [AngularControllerElement].
+ */
+class NgControllerElementProcessor extends NgProcessor {
+ final AngularControllerElement _element;
+
+ NgControllerElementProcessor(this._element);
+
+ @override
+ void apply(AngularHtmlUnitResolver resolver, ht.XmlTagNode node) {
+ InterfaceType type = (_element.enclosingElement as ClassElement).type;
+ String name = _element.name;
+ LocalVariableElementImpl variable = resolver._createLocalVariableWithName(type, name);
+ resolver._defineVariable(variable);
+ variable.toolkitObjects = <AngularElement> [_element];
+ }
+
+ @override
+ bool canApply(ht.XmlTagNode node) => _element.selector.apply(node);
+}
+
+/**
+ * [NgDecoratorElementProcessor] applies [AngularDecoratorElement] by parsing mapped
+ * attributes as expressions.
+ */
+class NgDecoratorElementProcessor extends NgDirectiveProcessor {
+ final AngularDecoratorElement _element;
+
+ NgDecoratorElementProcessor(this._element);
+
+ @override
+ void apply(AngularHtmlUnitResolver resolver, ht.XmlTagNode node) {
+ String selectorAttributeName = null;
+ {
+ AngularSelectorElement selector = _element.selector;
+ if (selector is HasAttributeSelectorElementImpl) {
+ selectorAttributeName = selector.name;
+ // resolve attribute expression
+ ht.XmlAttributeNode attribute = node.getAttribute(selectorAttributeName);
+ if (attribute != null) {
+ attribute.element = selector;
+ }
+ }
+ }
+ //
+ for (AngularPropertyElement property in _element.properties) {
+ // prepare attribute name
+ String name = property.name;
+ if (name == ".") {
+ name = selectorAttributeName;
+ }
+ // prepare attribute
+ ht.XmlAttributeNode attribute = node.getAttribute(name);
+ if (attribute == null) {
+ continue;
+ }
+ // if not resolved as the selector, resolve as a property
+ if (name != selectorAttributeName) {
+ attribute.element = property;
+ }
+ // skip if attribute has no value
+ if (!NgDirectiveProcessor.hasValue(attribute)) {
+ continue;
+ }
+ // resolve if binding
+ if (property.propertyKind != AngularPropertyKind.ATTR) {
+ resolver._pushNameScope();
+ try {
+ _onNgEventDirective(resolver);
+ AngularExpression expression = parseAngularExpression(resolver, attribute);
+ resolver._resolveExpression(expression);
+ setAngularExpression(attribute, expression);
+ } finally {
+ resolver._popNameScope();
+ }
+ }
+ }
+ }
+
+ @override
+ bool canApply(ht.XmlTagNode node) => _element.selector.apply(node);
+
+ /**
+ * Support for <code>$event</code> variable in <code>NgEventDirective</code>.
+ */
+ void _onNgEventDirective(AngularHtmlUnitResolver resolver) {
+ if (_element.isClass("NgEventDirective")) {
+ DartType dynamicType = resolver.typeProvider.dynamicType;
+ resolver._defineVariable(resolver._createLocalVariableWithName(dynamicType, "\$event"));
+ }
+ }
+}
+
+/**
+ * [NgDirectiveProcessor] describes any <code>Directive</code> annotation instance.
+ */
+abstract class NgDirectiveProcessor extends NgProcessor {
+ static bool hasValue(ht.XmlAttributeNode attribute) {
+ ht.Token valueToken = attribute.valueToken;
+ return valueToken != null && !valueToken.isSynthetic;
+ }
+
+ static AngularRawXmlExpression newAngularRawXmlExpression(AngularExpression e) => new AngularRawXmlExpression(e);
+
+ static ht.RawXmlExpression newRawXmlExpression(Expression e) => new ht.RawXmlExpression(e);
+
+ AngularExpression parseAngularExpression(AngularHtmlUnitResolver resolver, ht.XmlAttributeNode attribute) {
+ Token token = _scanAttribute(resolver, attribute);
+ return resolver._parseAngularExpressionInToken(token);
+ }
+
+ Expression parseDartExpression(AngularHtmlUnitResolver resolver, ht.XmlAttributeNode attribute) {
+ Token token = _scanAttribute(resolver, attribute);
+ return resolver._parseDartExpressionInToken(token);
+ }
+
+ /**
+ * Sets single [AngularExpression] for [XmlAttributeNode].
+ */
+ void setAngularExpression(ht.XmlAttributeNode attribute, AngularExpression expression) {
+ _setExpression(attribute, newAngularRawXmlExpression(expression));
+ }
+
+ /**
+ * Sets single [Expression] for [XmlAttributeNode].
+ */
+ void setExpression(ht.XmlAttributeNode attribute, Expression expression) {
+ _setExpression(attribute, newRawXmlExpression(expression));
+ }
+
+ void setExpressions(ht.XmlAttributeNode attribute, List<ht.XmlExpression> xmlExpressions) {
+ attribute.expressions = new List.from(xmlExpressions);
+ }
+
+ Token _scanAttribute(AngularHtmlUnitResolver resolver, ht.XmlAttributeNode attribute) {
+ int offset = attribute.valueToken.offset + 1;
+ String value = attribute.text;
+ return resolver._scanDart(value, 0, value.length, offset);
+ }
+
+ void _setExpression(ht.XmlAttributeNode attribute, ht.XmlExpression xmlExpression) {
+ attribute.expressions = <ht.XmlExpression> [xmlExpression];
+ }
+}
+
+/**
+ * [NgModelProcessor] describes built-in <code>NgModel</code> directive.
+ */
+class NgModelProcessor extends NgDirectiveProcessor {
+ static String _NG_MODEL = "ng-model";
+
+ static NgModelProcessor INSTANCE = new NgModelProcessor();
+
+ @override
+ void apply(AngularHtmlUnitResolver resolver, ht.XmlTagNode node) {
+ ht.XmlAttributeNode attribute = node.getAttribute(_NG_MODEL);
+ Expression expression = parseDartExpression(resolver, attribute);
+ // identifiers have been already handled by "apply top"
+ if (expression is SimpleIdentifier) {
+ return;
+ }
+ // resolve
+ resolver._resolveNode(expression);
+ // remember expression
+ setExpression(attribute, expression);
+ }
+
+ @override
+ bool canApply(ht.XmlTagNode node) => node.getAttribute(_NG_MODEL) != null;
+
+ /**
+ * This method is used to define top-level [VariableElement]s for each "ng-model" with
+ * simple identifier model.
+ */
+ void _applyTopDeclarations(AngularHtmlUnitResolver resolver, ht.XmlTagNode node) {
+ ht.XmlAttributeNode attribute = node.getAttribute(_NG_MODEL);
+ Expression expression = parseDartExpression(resolver, attribute);
+ // if not identifier, then not a top-level model, delay until "apply"
+ if (expression is! SimpleIdentifier) {
+ return;
+ }
+ SimpleIdentifier identifier = expression as SimpleIdentifier;
+ // define variable Element
+ InterfaceType type = resolver.typeProvider.stringType;
+ LocalVariableElementImpl element = resolver._createLocalVariableFromIdentifier(type, identifier);
+ resolver._defineTopVariable(element);
+ // remember expression
+ identifier.staticElement = element;
+ identifier.staticType = type;
+ setExpression(attribute, identifier);
+ }
+}
+
+/**
+ * [NgProcessor] is used to apply an Angular feature.
+ */
+abstract class NgProcessor {
+ /**
+ * Applies this [NgProcessor] to the resolver.
+ *
+ * @param resolver the [AngularHtmlUnitResolver] to apply to, not `null`
+ * @param node the [XmlTagNode] to apply within, not `null`
+ */
+ void apply(AngularHtmlUnitResolver resolver, ht.XmlTagNode node);
+
+ /**
+ * Checks if this processor can be applied to the given [XmlTagNode].
+ *
+ * @param node the [XmlTagNode] to check
+ * @return `true` if this processor can be applied, or `false` otherwise
+ */
+ bool canApply(ht.XmlTagNode node);
+}
+
+/**
+ * Instances of the class `ObsoleteSourceAnalysisException` represent an analysis attempt that
+ * failed because a source was deleted between the time the analysis started and the time the
+ * results of the analysis were ready to be recorded.
+ */
+class ObsoleteSourceAnalysisException extends AnalysisException {
+ /**
+ * The source that was removed while it was being analyzed.
+ */
+ Source _source;
+
+ /**
+ * Initialize a newly created exception to represent the removal of the given source.
+ *
+ * @param source the source that was removed while it was being analyzed
+ */
+ ObsoleteSourceAnalysisException(Source source) : super("The source '${source.fullName}' was removed while it was being analyzed") {
+ this._source = source;
+ }
+
+ /**
+ * Return the source that was removed while it was being analyzed.
+ *
+ * @return the source that was removed
+ */
+ Source get source => _source;
+}
+
+/**
+ * Instances of the class `ParseDartTask` parse a specific source as a Dart file.
+ */
+class ParseDartTask extends AnalysisTask {
+ /**
+ * Return the result of resolving the URI of the given URI-based directive against the URI of the
+ * given library, or `null` if the URI is not valid.
+ *
+ * @param context the context in which the resolution is to be performed
+ * @param librarySource the source representing the library containing the directive
+ * @param directive the directive which URI should be resolved
+ * @param errorListener the error listener to which errors should be reported
+ * @return the result of resolving the URI against the URI of the library
+ */
+ static Source resolveDirective(AnalysisContext context, Source librarySource, UriBasedDirective directive, AnalysisErrorListener errorListener) {
+ StringLiteral uriLiteral = directive.uri;
+ String uriContent = uriLiteral.stringValue;
+ if (uriContent != null) {
+ uriContent = uriContent.trim();
+ directive.uriContent = uriContent;
+ }
+ UriValidationCode code = directive.validate();
+ if (code == null) {
+ String encodedUriContent = Uri.encodeFull(uriContent);
+ Source source = context.sourceFactory.resolveUri(librarySource, encodedUriContent);
+ directive.source = source;
+ return source;
+ }
+ if (code == UriValidationCode.URI_WITH_DART_EXT_SCHEME) {
+ return null;
+ }
+ if (code == UriValidationCode.URI_WITH_INTERPOLATION) {
+ errorListener.onError(new AnalysisError.con2(librarySource, uriLiteral.offset, uriLiteral.length, CompileTimeErrorCode.URI_WITH_INTERPOLATION, []));
+ return null;
+ }
+ if (code == UriValidationCode.INVALID_URI) {
+ errorListener.onError(new AnalysisError.con2(librarySource, uriLiteral.offset, uriLiteral.length, CompileTimeErrorCode.INVALID_URI, [uriContent]));
+ return null;
+ }
+ throw new RuntimeException(message: "Failed to handle validation code: ${code}");
+ }
+
+ /**
+ * The source to be parsed.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The head of the token stream used for parsing.
+ */
+ final Token _tokenStream;
+
+ /**
+ * The line information associated with the source.
+ */
+ final LineInfo lineInfo;
+
+ /**
+ * The compilation unit that was produced by parsing the source.
+ */
+ CompilationUnit _unit;
+
+ /**
+ * A flag indicating whether the source contains a 'part of' directive.
+ */
+ bool _containsPartOfDirective = false;
+
+ /**
+ * A flag indicating whether the source contains any directive other than a 'part of' directive.
+ */
+ bool _containsNonPartOfDirective = false;
+
+ /**
+ * A set containing the sources referenced by 'export' directives.
+ */
+ HashSet<Source> _exportedSources = new HashSet<Source>();
+
+ /**
+ * A set containing the sources referenced by 'import' directives.
+ */
+ HashSet<Source> _importedSources = new HashSet<Source>();
+
+ /**
+ * A set containing the sources referenced by 'part' directives.
+ */
+ HashSet<Source> _includedSources = new HashSet<Source>();
+
+ /**
+ * The errors that were produced by scanning and parsing the source.
+ */
+ List<AnalysisError> _errors = AnalysisError.NO_ERRORS;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be parsed
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param tokenStream the head of the token stream used for parsing
+ * @param lineInfo the line information associated with the source
+ */
+ ParseDartTask(InternalAnalysisContext context, this.source, this.modificationTime, this._tokenStream, this.lineInfo) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitParseDartTask(this);
+
+ /**
+ * Return the compilation unit that was produced by parsing the source, or `null` if the
+ * task has not yet been performed or if an exception occurred.
+ *
+ * @return the compilation unit that was produced by parsing the source
+ */
+ CompilationUnit get compilationUnit => _unit;
+
+ /**
+ * Return the errors that were produced by scanning and parsing the source, or an empty array if
+ * the task has not yet been performed or if an exception occurred.
+ *
+ * @return the errors that were produced by scanning and parsing the source
+ */
+ List<AnalysisError> get errors => _errors;
+
+ /**
+ * Return an array containing the sources referenced by 'export' directives, or an empty array if
+ * the task has not yet been performed or if an exception occurred.
+ *
+ * @return an array containing the sources referenced by 'export' directives
+ */
+ List<Source> get exportedSources => _toArray(_exportedSources);
+
+ /**
+ * Return an array containing the sources referenced by 'import' directives, or an empty array if
+ * the task has not yet been performed or if an exception occurred.
+ *
+ * @return an array containing the sources referenced by 'import' directives
+ */
+ List<Source> get importedSources => _toArray(_importedSources);
+
+ /**
+ * Return an array containing the sources referenced by 'part' directives, or an empty array if
+ * the task has not yet been performed or if an exception occurred.
+ *
+ * @return an array containing the sources referenced by 'part' directives
+ */
+ List<Source> get includedSources => _toArray(_includedSources);
+
+ /**
+ * Return `true` if the source contains any directive other than a 'part of' directive, or
+ * `false` if the task has not yet been performed or if an exception occurred.
+ *
+ * @return `true` if the source contains any directive other than a 'part of' directive
+ */
+ bool get hasNonPartOfDirective => _containsNonPartOfDirective;
+
+ /**
+ * Return `true` if the source contains a 'part of' directive, or `false` if the task
+ * has not yet been performed or if an exception occurred.
+ *
+ * @return `true` if the source contains a 'part of' directive
+ */
+ bool get hasPartOfDirective => _containsPartOfDirective;
+
+ @override
+ String get taskDescription {
+ if (source == null) {
+ return "parse as dart null source";
+ }
+ return "parse as dart ${source.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ //
+ // Then parse the token stream.
+ //
+ TimeCounter_TimeCounterHandle timeCounterParse = PerformanceStatistics.parse.start();
+ try {
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ Parser parser = new Parser(source, errorListener);
+ AnalysisOptions options = context.analysisOptions;
+ parser.parseFunctionBodies = options.analyzeFunctionBodies;
+ parser.parseAsync = options.enableAsync;
+ parser.parseDeferredLibraries = options.enableDeferredLoading;
+ parser.parseEnum = options.enableEnum;
+ _unit = parser.parseCompilationUnit(_tokenStream);
+ _unit.lineInfo = lineInfo;
+ AnalysisContext analysisContext = context;
+ for (Directive directive in _unit.directives) {
+ if (directive is PartOfDirective) {
+ _containsPartOfDirective = true;
+ } else {
+ _containsNonPartOfDirective = true;
+ if (directive is UriBasedDirective) {
+ Source referencedSource = resolveDirective(analysisContext, source, directive, errorListener);
+ if (referencedSource != null) {
+ if (directive is ExportDirective) {
+ _exportedSources.add(referencedSource);
+ } else if (directive is ImportDirective) {
+ _importedSources.add(referencedSource);
+ } else if (directive is PartDirective) {
+ if (referencedSource != source) {
+ _includedSources.add(referencedSource);
+ }
+ } else {
+ throw new AnalysisException("${runtimeType.toString()} failed to handle a ${directive.runtimeType.toString()}");
+ }
+ }
+ }
+ }
+ }
+ _errors = errorListener.getErrorsForSource(source);
+ } finally {
+ timeCounterParse.stop();
+ }
+ }
+
+ /**
+ * Efficiently convert the given set of sources to an array.
+ *
+ * @param sources the set to be converted
+ * @return an array containing all of the sources in the given set
+ */
+ List<Source> _toArray(HashSet<Source> sources) {
+ int size = sources.length;
+ if (size == 0) {
+ return Source.EMPTY_ARRAY;
+ }
+ return new List.from(sources);
+ }
+}
+
+/**
+ * Instances of the class `ParseHtmlTask` parse a specific source as an HTML file.
+ */
+class ParseHtmlTask extends AnalysisTask {
+ /**
+ * The source to be parsed.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The contents of the source.
+ */
+ final String _content;
+
+ /**
+ * The line information that was produced.
+ */
+ LineInfo _lineInfo;
+
+ /**
+ * The HTML unit that was produced by parsing the source.
+ */
+ ht.HtmlUnit _unit;
+
+ /**
+ * The errors that were produced by scanning and parsing the source.
+ */
+ List<AnalysisError> _errors = AnalysisError.NO_ERRORS;
+
+ /**
+ * An array containing the sources of the libraries that are referenced within the HTML.
+ */
+ List<Source> _referencedLibraries = Source.EMPTY_ARRAY;
+
+ /**
+ * The name of the 'src' attribute in a HTML tag.
+ */
+ static String _ATTRIBUTE_SRC = "src";
+
+ /**
+ * The name of the 'script' tag in an HTML file.
+ */
+ static String _TAG_SCRIPT = "script";
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be parsed
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param content the contents of the source
+ */
+ ParseHtmlTask(InternalAnalysisContext context, this.source, this.modificationTime, this._content) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitParseHtmlTask(this);
+
+ /**
+ * Return the errors that were produced by scanning and parsing the source, or `null` if the
+ * task has not yet been performed or if an exception occurred.
+ *
+ * @return the errors that were produced by scanning and parsing the source
+ */
+ List<AnalysisError> get errors => _errors;
+
+ /**
+ * Return the HTML unit that was produced by parsing the source.
+ *
+ * @return the HTML unit that was produced by parsing the source
+ */
+ ht.HtmlUnit get htmlUnit => _unit;
+
+ /**
+ * Return the line information that was produced, or `null` if the task has not yet been
+ * performed or if an exception occurred.
+ *
+ * @return the line information that was produced
+ */
+ LineInfo get lineInfo => _lineInfo;
+
+ /**
+ * Return an array containing the sources of the libraries that are referenced within the HTML.
+ *
+ * @return the sources of the libraries that are referenced within the HTML
+ */
+ List<Source> get referencedLibraries => _referencedLibraries;
+
+ @override
+ String get taskDescription {
+ if (source == null) {
+ return "parse as html null source";
+ }
+ return "parse as html ${source.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ try {
+ ht.AbstractScanner scanner = new ht.StringScanner(source, _content);
+ scanner.passThroughElements = <String> [_TAG_SCRIPT];
+ ht.Token token = scanner.tokenize();
+ _lineInfo = new LineInfo(scanner.lineStarts);
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ _unit = new ht.HtmlParser(source, errorListener).parse(token, _lineInfo);
+ _unit.accept(new RecursiveXmlVisitor_ParseHtmlTask_internalPerform(this, errorListener));
+ _errors = errorListener.getErrorsForSource(source);
+ _referencedLibraries = librarySources;
+ } catch (exception, stackTrace) {
+ throw new AnalysisException("Exception", new CaughtException(exception, stackTrace));
+ }
+ }
+
+ /**
+ * Return the sources of libraries that are referenced in the specified HTML file.
+ *
+ * @return the sources of libraries that are referenced in the HTML file
+ */
+ List<Source> get librarySources {
+ List<Source> libraries = new List<Source>();
+ _unit.accept(new RecursiveXmlVisitor_ParseHtmlTask_getLibrarySources(this, libraries));
+ if (libraries.isEmpty) {
+ return Source.EMPTY_ARRAY;
+ }
+ return new List.from(libraries);
+ }
+
+ /**
+ * Resolves directives in the given [CompilationUnit].
+ */
+ void _resolveScriptDirectives(CompilationUnit script, AnalysisErrorListener errorListener) {
+ if (script == null) {
+ return;
+ }
+ AnalysisContext analysisContext = context;
+ for (Directive directive in script.directives) {
+ if (directive is UriBasedDirective) {
+ ParseDartTask.resolveDirective(analysisContext, source, directive, errorListener);
+ }
+ }
+ }
+}
+
+/**
+ * Instances of the class `PartitionManager` manage the partitions that can be shared between
+ * analysis contexts.
+ */
+class PartitionManager {
+ /**
+ * A table mapping SDK's to the partitions used for those SDK's.
+ */
+ HashMap<DartSdk, SdkCachePartition> _sdkPartitions = new HashMap<DartSdk, SdkCachePartition>();
+
+ /**
+ * The default cache size for a Dart SDK partition.
+ */
+ static int _DEFAULT_SDK_CACHE_SIZE = 256;
+
+ /**
+ * Return the partition being used for the given SDK, creating the partition if necessary.
+ *
+ * @param sdk the SDK for which a partition is being requested
+ * @return the partition being used for the given SDK
+ */
+ SdkCachePartition forSdk(DartSdk sdk) {
+ SdkCachePartition partition = _sdkPartitions[sdk];
+ if (partition == null) {
+ partition = new SdkCachePartition(_DEFAULT_SDK_CACHE_SIZE);
+ _sdkPartitions[sdk] = partition;
+ }
+ return partition;
+ }
+}
+
+/**
+ * Container with global [AnalysisContext] performance statistics.
+ */
+class PerformanceStatistics {
+ /**
+ * The [TimeCounter] for time spent in reading files.
+ */
+ static TimeCounter io = new TimeCounter();
+
+ /**
+ * The [TimeCounter] for time spent in scanning.
+ */
+ static TimeCounter scan = new TimeCounter();
+
+ /**
+ * The [TimeCounter] for time spent in parsing.
+ */
+ static TimeCounter parse = new TimeCounter();
+
+ /**
+ * The [TimeCounter] for time spent in resolving.
+ */
+ static TimeCounter resolve = new TimeCounter();
+
+ /**
+ * The [TimeCounter] for time spent in Angular analysis.
+ */
+ static TimeCounter angular = new TimeCounter();
+
+ /**
+ * The [TimeCounter] for time spent in Polymer analysis.
+ */
+ static TimeCounter polymer = new TimeCounter();
+
+ /**
+ * The [TimeCounter] for time spent in error verifier.
+ */
+ static TimeCounter errors = new TimeCounter();
+
+ /**
+ * The [TimeCounter] for time spent in hints generator.
+ */
+ static TimeCounter hints = new TimeCounter();
+
+ /**
+ * Reset all of the time counters to zero.
+ */
+ static void reset() {
+ io = new TimeCounter();
+ scan = new TimeCounter();
+ parse = new TimeCounter();
+ resolve = new TimeCounter();
+ angular = new TimeCounter();
+ polymer = new TimeCounter();
+ errors = new TimeCounter();
+ hints = new TimeCounter();
+ }
+}
+
+/**
+ * Instances of the class `PolymerBuildHtmlTask` build Polymer specific elements.
+ */
+class PolymerBuildHtmlTask extends AnalysisTask {
+ /**
+ * The source to build which Polymer HTML elements for.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The line information associated with the source.
+ */
+ final LineInfo _lineInfo;
+
+ /**
+ * The HTML unit to be resolved.
+ */
+ final ht.HtmlUnit _unit;
+
+ /**
+ * The resolution errors that were discovered while building elements.
+ */
+ List<AnalysisError> _errors = AnalysisError.NO_ERRORS;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be resolved
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param lineInfo the line information associated with the source
+ * @param unit the HTML unit to build Polymer elements for
+ */
+ PolymerBuildHtmlTask(InternalAnalysisContext context, this.source, this.modificationTime, this._lineInfo, this._unit) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitPolymerBuildHtmlTask(this);
+
+ List<AnalysisError> get errors => _errors;
+
+ @override
+ String get taskDescription => "build Polymer elements ${source.fullName}";
+
+ @override
+ void internalPerform() {
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ PolymerHtmlUnitBuilder resolver = new PolymerHtmlUnitBuilder(context, errorListener, source, _lineInfo, _unit);
+ resolver.build();
+ _errors = errorListener.getErrorsForSource(source);
+ }
+}
+
+/**
+ * Instances of the class [PolymerHtmlUnitBuilder] build Polymer specific elements.
+ */
+class PolymerHtmlUnitBuilder extends ht.RecursiveXmlVisitor<Object> {
+ /**
+ * These names are forbidden to use as a custom tag name.
+ *
+ * http://w3c.github.io/webcomponents/spec/custom/#concepts
+ */
+ static Set<String> _FORBIDDEN_TAG_NAMES = new Set();
+
+ static bool isValidAttributeName(String name) {
+ // cannot be empty
+ if (name.isEmpty) {
+ return false;
+ }
+ // check characters
+ int length = name.length;
+ for (int i = 0; i < length; i++) {
+ int c = name.codeUnitAt(i);
+ if (i == 0) {
+ if (!Character.isLetter(c)) {
+ return false;
+ }
+ } else {
+ if (!(Character.isLetterOrDigit(c) || c == 0x5F)) {
+ return false;
+ }
+ }
+ }
+ return true;
+ }
+
+ static bool isValidTagName(String name) {
+ // cannot be empty
+ if (name.isEmpty) {
+ return false;
+ }
+ // check for forbidden name
+ if (_FORBIDDEN_TAG_NAMES.contains(name)) {
+ return false;
+ }
+ // check characters
+ int length = name.length;
+ bool hasDash = false;
+ for (int i = 0; i < length; i++) {
+ int c = name.codeUnitAt(i);
+ // check for '-'
+ if (c == 0x2D) {
+ hasDash = true;
+ }
+ // check character
+ if (i == 0) {
+ if (hasDash) {
+ return false;
+ }
+ if (!Character.isLetter(c)) {
+ return false;
+ }
+ } else {
+ if (!(Character.isLetterOrDigit(c) || c == 0x2D || c == 0x5F)) {
+ return false;
+ }
+ }
+ }
+ if (!hasDash) {
+ return false;
+ }
+ return true;
+ }
+
+ final InternalAnalysisContext _context;
+
+ TypeProvider _typeProvider;
+
+ final AnalysisErrorListener _errorListener;
+
+ final Source _source;
+
+ final LineInfo _lineInfo;
+
+ final ht.HtmlUnit _unit;
+
+ List<PolymerTagHtmlElement> _tagHtmlElements = [];
+
+ ht.XmlTagNode _elementNode;
+
+ String _elementName;
+
+ PolymerTagHtmlElementImpl _htmlElement;
+
+ PolymerTagDartElementImpl _dartElement;
+
+ PolymerHtmlUnitBuilder(this._context, this._errorListener, this._source, this._lineInfo, this._unit) {
+ this._typeProvider = _context.typeProvider;
+ }
+
+ /**
+ * Builds Polymer specific HTML elements.
+ */
+ void build() {
+ _unit.accept(this);
+ // set Polymer tags
+ HtmlElementImpl unitElement = _unit.element as HtmlElementImpl;
+ unitElement.polymerTags = new List.from(_tagHtmlElements);
+ }
+
+ @override
+ Object visitXmlTagNode(ht.XmlTagNode node) {
+ if (node.tag == "polymer-element") {
+ _createTagHtmlElement(node);
+ }
+ // visit children
+ return super.visitXmlTagNode(node);
+ }
+
+ void _createAttributeElements() {
+ // prepare "attributes" attribute
+ ht.XmlAttributeNode attributesAttribute = _elementNode.getAttribute("attributes");
+ if (attributesAttribute == null) {
+ return;
+ }
+ // check if there is a Dart part to resolve against it
+ if (_dartElement == null) {
+ // TODO(scheglov) maybe report error (if it is allowed at all to have element without Dart part)
+ return;
+ }
+ // prepare value of the "attributes" attribute
+ String attributesText = attributesAttribute.text;
+ if (attributesText.trim().isEmpty) {
+ _reportErrorForAttribute(attributesAttribute, PolymerCode.EMPTY_ATTRIBUTES, []);
+ return;
+ }
+ // prepare attribute name tokens
+ List<PolymerHtmlUnitBuilder_NameToken> nameTokens = [];
+ {
+ int index = 0;
+ int textOffset = attributesAttribute.textOffset;
+ int nameOffset = -1;
+ JavaStringBuilder nameBuilder = new JavaStringBuilder();
+ while (index < attributesText.length) {
+ int c = attributesText.codeUnitAt(index++);
+ if (Character.isWhitespace(c)) {
+ if (nameOffset != -1) {
+ nameTokens.add(new PolymerHtmlUnitBuilder_NameToken(nameOffset, nameBuilder.toString()));
+ nameBuilder = new JavaStringBuilder();
+ nameOffset = -1;
+ }
+ continue;
+ }
+ if (nameOffset == -1) {
+ nameOffset = textOffset + index - 1;
+ }
+ nameBuilder.appendChar(c);
+ }
+ if (nameOffset != -1) {
+ nameTokens.add(new PolymerHtmlUnitBuilder_NameToken(nameOffset, nameBuilder.toString()));
+ nameBuilder = new JavaStringBuilder();
+ }
+ }
+ // create attributes for name tokens
+ List<PolymerAttributeElement> attributes = [];
+ Set<String> definedNames = new Set();
+ ClassElement classElement = _dartElement.classElement;
+ for (PolymerHtmlUnitBuilder_NameToken nameToken in nameTokens) {
+ int offset = nameToken._offset;
+ // prepare name
+ String name = nameToken._value;
+ if (!isValidAttributeName(name)) {
+ _reportErrorForNameToken(nameToken, PolymerCode.INVALID_ATTRIBUTE_NAME, [name]);
+ continue;
+ }
+ if (!definedNames.add(name)) {
+ _reportErrorForNameToken(nameToken, PolymerCode.DUPLICATE_ATTRIBUTE_DEFINITION, [name]);
+ continue;
+ }
+ // create attribute
+ PolymerAttributeElementImpl attribute = new PolymerAttributeElementImpl(name, offset);
+ attributes.add(attribute);
+ // resolve field
+ FieldElement field = classElement.getField(name);
+ if (field == null) {
+ _reportErrorForNameToken(nameToken, PolymerCode.UNDEFINED_ATTRIBUTE_FIELD, [name, classElement.displayName]);
+ continue;
+ }
+ if (!_isPublishedField(field)) {
+ _reportErrorForNameToken(nameToken, PolymerCode.ATTRIBUTE_FIELD_NOT_PUBLISHED, [name, classElement.displayName]);
+ }
+ attribute.field = field;
+ }
+ _htmlElement.attributes = new List.from(attributes);
+ }
+
+ void _createTagHtmlElement(ht.XmlTagNode node) {
+ this._elementNode = node;
+ this._elementName = null;
+ this._htmlElement = null;
+ this._dartElement = null;
+ // prepare 'name' attribute
+ ht.XmlAttributeNode nameAttribute = node.getAttribute("name");
+ if (nameAttribute == null) {
+ _reportErrorForToken(node.tagToken, PolymerCode.MISSING_TAG_NAME, []);
+ return;
+ }
+ // prepare name
+ _elementName = nameAttribute.text;
+ if (!isValidTagName(_elementName)) {
+ _reportErrorForAttributeValue(nameAttribute, PolymerCode.INVALID_TAG_NAME, [_elementName]);
+ return;
+ }
+ // TODO(scheglov) Maybe check that at least one of "template" or "script" children.
+ // TODO(scheglov) Maybe check if more than one top-level "template".
+ // create HTML element
+ int nameOffset = nameAttribute.textOffset;
+ _htmlElement = new PolymerTagHtmlElementImpl(_elementName, nameOffset);
+ // bind to the corresponding Dart element
+ _dartElement = _findTagDartElement();
+ if (_dartElement != null) {
+ _htmlElement.dartElement = _dartElement;
+ _dartElement.htmlElement = _htmlElement;
+ }
+ // TODO(scheglov) create attributes
+ _createAttributeElements();
+ // done
+ _tagHtmlElements.add(_htmlElement);
+ }
+
+ /**
+ * Returns the [PolymerTagDartElement] that corresponds to the Polymer custom tag declared
+ * by the given [XmlTagNode].
+ */
+ PolymerTagDartElementImpl _findTagDartElement() {
+ LibraryElement dartLibraryElement = dartUnitElement;
+ if (dartLibraryElement == null) {
+ return null;
+ }
+ return _findTagDartElement_inLibrary(dartLibraryElement);
+ }
+
+ /**
+ * Returns the [PolymerTagDartElementImpl] declared in the given [LibraryElement] with
+ * the [elementName]. Maybe `null`.
+ */
+ PolymerTagDartElementImpl _findTagDartElement_inLibrary(LibraryElement library) {
+ try {
+ library.accept(new RecursiveElementVisitor_PolymerHtmlUnitBuilder_findTagDartElement_inLibrary(this));
+ } on PolymerHtmlUnitBuilder_FoundTagDartElementError catch (e) {
+ return e._result;
+ }
+ return null;
+ }
+
+ /**
+ * Returns the only [LibraryElement] referenced by a direct `script` child. Maybe
+ * `null` if none.
+ */
+ LibraryElement get dartUnitElement {
+ // TODO(scheglov) Maybe check if more than one "script".
+ for (ht.XmlTagNode child in _elementNode.tagNodes) {
+ if (child is ht.HtmlScriptTagNode) {
+ HtmlScriptElement scriptElement = child.scriptElement;
+ if (scriptElement is ExternalHtmlScriptElement) {
+ Source scriptSource = scriptElement.scriptSource;
+ if (scriptSource != null) {
+ return _context.getLibraryElement(scriptSource);
+ }
+ }
+ }
+ }
+ return null;
+ }
+
+ bool _isPublishedAnnotation(ElementAnnotation annotation) {
+ Element element = annotation.element;
+ if (element != null && element.name == "published") {
+ return true;
+ }
+ return false;
+ }
+
+ bool _isPublishedField(FieldElement field) {
+ List<ElementAnnotation> annotations = field.metadata;
+ for (ElementAnnotation annotation in annotations) {
+ if (_isPublishedAnnotation(annotation)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Reports an error on the attribute's value, or (if absent) on the attribute's name.
+ */
+ void _reportErrorForAttribute(ht.XmlAttributeNode node, ErrorCode errorCode, List<Object> arguments) {
+ _reportErrorForOffset(node.offset, node.length, errorCode, arguments);
+ }
+
+ /**
+ * Reports an error on the attribute's value, or (if absent) on the attribute's name.
+ */
+ void _reportErrorForAttributeValue(ht.XmlAttributeNode node, ErrorCode errorCode, List<Object> arguments) {
+ ht.Token valueToken = node.valueToken;
+ if (valueToken == null || valueToken.isSynthetic) {
+ _reportErrorForAttribute(node, errorCode, arguments);
+ } else {
+ _reportErrorForToken(valueToken, errorCode, arguments);
+ }
+ }
+
+ void _reportErrorForNameToken(PolymerHtmlUnitBuilder_NameToken token, ErrorCode errorCode, List<Object> arguments) {
+ int offset = token._offset;
+ int length = token._value.length;
+ _reportErrorForOffset(offset, length, errorCode, arguments);
+ }
+
+ void _reportErrorForOffset(int offset, int length, ErrorCode errorCode, List<Object> arguments) {
+ _errorListener.onError(new AnalysisError.con2(_source, offset, length, errorCode, arguments));
+ }
+
+ void _reportErrorForToken(ht.Token token, ErrorCode errorCode, List<Object> arguments) {
+ int offset = token.offset;
+ int length = token.length;
+ _reportErrorForOffset(offset, length, errorCode, arguments);
+ }
+}
+
+class PolymerHtmlUnitBuilder_FoundTagDartElementError extends Error {
+ final PolymerTagDartElementImpl _result;
+
+ PolymerHtmlUnitBuilder_FoundTagDartElementError(this._result);
+}
+
+class PolymerHtmlUnitBuilder_NameToken {
+ final int _offset;
+
+ final String _value;
+
+ PolymerHtmlUnitBuilder_NameToken(this._offset, this._value);
+}
+
+/**
+ * Instances of the class [PolymerHtmlUnitResolver] resolve Polymer specific
+ * [XmlTagNode]s and expressions.
+ *
+ * TODO(scheglov) implement it
+ */
+class PolymerHtmlUnitResolver extends ht.RecursiveXmlVisitor<Object> {
+ final InternalAnalysisContext _context;
+
+ TypeProvider _typeProvider;
+
+ final AnalysisErrorListener _errorListener;
+
+ final Source _source;
+
+ final LineInfo _lineInfo;
+
+ final ht.HtmlUnit _unit;
+
+ PolymerHtmlUnitResolver(this._context, this._errorListener, this._source, this._lineInfo, this._unit) {
+ this._typeProvider = _context.typeProvider;
+ }
+
+ /**
+ * Resolves Polymer specific features.
+ */
+ void resolveUnit() {
+ }
+
+ @override
+ Object visitXmlAttributeNode(ht.XmlAttributeNode node) => super.visitXmlAttributeNode(node);
+
+ @override
+ Object visitXmlTagNode(ht.XmlTagNode node) => super.visitXmlTagNode(node);
+}
+
+/**
+ * Instances of the class `PolymerResolveHtmlTask` performs Polymer specific HTML file
+ * resolution.
+ *
+ * TODO(scheglov) implement it
+ */
+class PolymerResolveHtmlTask extends AnalysisTask {
+ /**
+ * The source to be resolved.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The line information associated with the source.
+ */
+ final LineInfo _lineInfo;
+
+ /**
+ * The HTML unit to be resolved.
+ */
+ final ht.HtmlUnit _unit;
+
+ /**
+ * The resolution errors that were discovered while resolving the source.
+ */
+ List<AnalysisError> _errors = AnalysisError.NO_ERRORS;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be resolved
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param unit the HTML unit to be resolved
+ */
+ PolymerResolveHtmlTask(InternalAnalysisContext context, this.source, this.modificationTime, this._lineInfo, this._unit) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitPolymerResolveHtmlTask(this);
+
+ List<AnalysisError> get errors => _errors;
+
+ @override
+ String get taskDescription => "resolve as Polymer ${source.fullName}";
+
+ @override
+ void internalPerform() {
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ PolymerHtmlUnitResolver resolver = new PolymerHtmlUnitResolver(context, errorListener, source, _lineInfo, _unit);
+ resolver.resolveUnit();
+ _errors = errorListener.getErrorsForSource(source);
+ }
+}
+
+/**
+ * Instances of the class `RecordingErrorListener` implement an error listener that will
+ * record the errors that are reported to it in a way that is appropriate for caching those errors
+ * within an analysis context.
+ */
+class RecordingErrorListener implements AnalysisErrorListener {
+ /**
+ * A HashMap of lists containing the errors that were collected, keyed by each [Source].
+ */
+ Map<Source, HashSet<AnalysisError>> _errors = new HashMap<Source, HashSet<AnalysisError>>();
+
+ /**
+ * Add all of the errors recorded by the given listener to this listener.
+ *
+ * @param listener the listener that has recorded the errors to be added
+ */
+ void addAll(RecordingErrorListener listener) {
+ for (AnalysisError error in listener.errors) {
+ onError(error);
+ }
+ }
+
+ /**
+ * Answer the errors collected by the listener.
+ *
+ * @return an array of errors (not `null`, contains no `null`s)
+ */
+ List<AnalysisError> get errors {
+ Iterable<MapEntry<Source, HashSet<AnalysisError>>> entrySet = getMapEntrySet(_errors);
+ int numEntries = entrySet.length;
+ if (numEntries == 0) {
+ return AnalysisError.NO_ERRORS;
+ }
+ List<AnalysisError> resultList = new List<AnalysisError>();
+ for (MapEntry<Source, HashSet<AnalysisError>> entry in entrySet) {
+ resultList.addAll(entry.getValue());
+ }
+ return new List.from(resultList);
+ }
+
+ /**
+ * Answer the errors collected by the listener for some passed [Source].
+ *
+ * @param source some [Source] for which the caller wants the set of [AnalysisError]s
+ * collected by this listener
+ * @return the errors collected by the listener for the passed [Source]
+ */
+ List<AnalysisError> getErrorsForSource(Source source) {
+ HashSet<AnalysisError> errorsForSource = _errors[source];
+ if (errorsForSource == null) {
+ return AnalysisError.NO_ERRORS;
+ } else {
+ return new List.from(errorsForSource);
+ }
+ }
+
+ @override
+ void onError(AnalysisError error) {
+ Source source = error.source;
+ HashSet<AnalysisError> errorsForSource = _errors[source];
+ if (_errors[source] == null) {
+ errorsForSource = new HashSet<AnalysisError>();
+ _errors[source] = errorsForSource;
+ }
+ errorsForSource.add(error);
+ }
+}
+
+class RecursiveElementVisitor_PolymerHtmlUnitBuilder_findTagDartElement_inLibrary extends RecursiveElementVisitor<Object> {
+ final PolymerHtmlUnitBuilder PolymerHtmlUnitBuilder_this;
+
+ RecursiveElementVisitor_PolymerHtmlUnitBuilder_findTagDartElement_inLibrary(this.PolymerHtmlUnitBuilder_this) : super();
+
+ @override
+ Object visitPolymerTagDartElement(PolymerTagDartElement element) {
+ if (element.name == PolymerHtmlUnitBuilder_this._elementName) {
+ throw new PolymerHtmlUnitBuilder_FoundTagDartElementError(element as PolymerTagDartElementImpl);
+ }
+ return null;
+ }
+}
+
+class RecursiveXmlVisitor_AngularHtmlUnitResolver_hasAngularAnnotation extends ht.RecursiveXmlVisitor<Object> {
+ @override
+ Object visitXmlTagNode(ht.XmlTagNode node) {
+ if (node.getAttribute(AngularHtmlUnitResolver._NG_APP) != null) {
+ throw new AngularHtmlUnitResolver_FoundAppError();
+ }
+ return super.visitXmlTagNode(node);
+ }
+}
+
+class RecursiveXmlVisitor_AngularHtmlUnitResolver_visitModelDirectives extends ht.RecursiveXmlVisitor<Object> {
+ final AngularHtmlUnitResolver AngularHtmlUnitResolver_this;
+
+ RecursiveXmlVisitor_AngularHtmlUnitResolver_visitModelDirectives(this.AngularHtmlUnitResolver_this) : super();
+
+ @override
+ Object visitXmlTagNode(ht.XmlTagNode node) {
+ NgModelProcessor directive = NgModelProcessor.INSTANCE;
+ if (directive.canApply(node)) {
+ directive._applyTopDeclarations(AngularHtmlUnitResolver_this, node);
+ }
+ return super.visitXmlTagNode(node);
+ }
+}
+
+class RecursiveXmlVisitor_ParseHtmlTask_getLibrarySources extends ht.RecursiveXmlVisitor<Object> {
+ final ParseHtmlTask ParseHtmlTask_this;
+
+ List<Source> libraries;
+
+ RecursiveXmlVisitor_ParseHtmlTask_getLibrarySources(this.ParseHtmlTask_this, this.libraries) : super();
+
+ @override
+ Object visitHtmlScriptTagNode(ht.HtmlScriptTagNode node) {
+ ht.XmlAttributeNode scriptAttribute = null;
+ for (ht.XmlAttributeNode attribute in node.attributes) {
+ if (javaStringEqualsIgnoreCase(attribute.name, ParseHtmlTask._ATTRIBUTE_SRC)) {
+ scriptAttribute = attribute;
+ }
+ }
+ if (scriptAttribute != null) {
+ try {
+ Uri uri = new Uri(path: scriptAttribute.text);
+ String fileName = uri.path;
+ Source librarySource = ParseHtmlTask_this.context.sourceFactory.resolveUri(ParseHtmlTask_this.source, fileName);
+ if (ParseHtmlTask_this.context.exists(librarySource)) {
+ libraries.add(librarySource);
+ }
+ } on URISyntaxException catch (e) {
+ }
+ }
+ return super.visitHtmlScriptTagNode(node);
+ }
+}
+
+class RecursiveXmlVisitor_ParseHtmlTask_internalPerform extends ht.RecursiveXmlVisitor<Object> {
+ final ParseHtmlTask ParseHtmlTask_this;
+
+ RecordingErrorListener errorListener;
+
+ RecursiveXmlVisitor_ParseHtmlTask_internalPerform(this.ParseHtmlTask_this, this.errorListener) : super();
+
+ @override
+ Object visitHtmlScriptTagNode(ht.HtmlScriptTagNode node) {
+ ParseHtmlTask_this._resolveScriptDirectives(node.script, errorListener);
+ return null;
+ }
+}
+
+class RecursiveXmlVisitor_ResolveHtmlTask_internalPerform extends ht.RecursiveXmlVisitor<Object> {
+ final ResolveHtmlTask ResolveHtmlTask_this;
+
+ RecordingErrorListener errorListener;
+
+ RecursiveXmlVisitor_ResolveHtmlTask_internalPerform(this.ResolveHtmlTask_this, this.errorListener) : super();
+
+ @override
+ Object visitHtmlScriptTagNode(ht.HtmlScriptTagNode node) {
+ CompilationUnit script = node.script;
+ if (script != null) {
+ GenerateDartErrorsTask.validateDirectives(ResolveHtmlTask_this.context, ResolveHtmlTask_this.source, script, errorListener);
+ }
+ return null;
+ }
+}
+
+/**
+ * Instances of the class `ResolutionEraser` remove any resolution information from an AST
+ * structure when used to visit that structure.
+ */
+class ResolutionEraser extends GeneralizingAstVisitor<Object> {
+ @override
+ Object visitAssignmentExpression(AssignmentExpression node) {
+ node.staticElement = null;
+ node.propagatedElement = null;
+ return super.visitAssignmentExpression(node);
+ }
+
+ @override
+ Object visitBinaryExpression(BinaryExpression node) {
+ node.staticElement = null;
+ node.propagatedElement = null;
+ return super.visitBinaryExpression(node);
+ }
+
+ @override
+ Object visitCompilationUnit(CompilationUnit node) {
+ node.element = null;
+ return super.visitCompilationUnit(node);
+ }
+
+ @override
+ Object visitConstructorDeclaration(ConstructorDeclaration node) {
+ node.element = null;
+ return super.visitConstructorDeclaration(node);
+ }
+
+ @override
+ Object visitConstructorName(ConstructorName node) {
+ node.staticElement = null;
+ return super.visitConstructorName(node);
+ }
+
+ @override
+ Object visitDirective(Directive node) {
+ node.element = null;
+ return super.visitDirective(node);
+ }
+
+ @override
+ Object visitExpression(Expression node) {
+ node.staticType = null;
+ node.propagatedType = null;
+ return super.visitExpression(node);
+ }
+
+ @override
+ Object visitFunctionExpression(FunctionExpression node) {
+ node.element = null;
+ return super.visitFunctionExpression(node);
+ }
+
+ @override
+ Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+ node.staticElement = null;
+ node.propagatedElement = null;
+ return super.visitFunctionExpressionInvocation(node);
+ }
+
+ @override
+ Object visitIndexExpression(IndexExpression node) {
+ node.staticElement = null;
+ node.propagatedElement = null;
+ return super.visitIndexExpression(node);
+ }
+
+ @override
+ Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+ node.staticElement = null;
+ return super.visitInstanceCreationExpression(node);
+ }
+
+ @override
+ Object visitPostfixExpression(PostfixExpression node) {
+ node.staticElement = null;
+ node.propagatedElement = null;
+ return super.visitPostfixExpression(node);
+ }
+
+ @override
+ Object visitPrefixExpression(PrefixExpression node) {
+ node.staticElement = null;
+ node.propagatedElement = null;
+ return super.visitPrefixExpression(node);
+ }
+
+ @override
+ Object visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) {
+ node.staticElement = null;
+ return super.visitRedirectingConstructorInvocation(node);
+ }
+
+ @override
+ Object visitSimpleIdentifier(SimpleIdentifier node) {
+ node.staticElement = null;
+ node.propagatedElement = null;
+ return super.visitSimpleIdentifier(node);
+ }
+
+ @override
+ Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+ node.staticElement = null;
+ return super.visitSuperConstructorInvocation(node);
+ }
+}
+
+/**
+ * Instances of the class `ResolvableCompilationUnit` represent a compilation unit that is not
+ * referenced by any other objects and for which we have modification stamp information. It is used
+ * by the [LibraryResolver] to resolve a library.
+ */
+class ResolvableCompilationUnit extends TimestampedData<CompilationUnit> {
+ /**
+ * The source of the compilation unit.
+ */
+ final Source source;
+
+ /**
+ * Initialize a newly created holder to hold the given values.
+ *
+ * @param modificationTime the modification time of the source from which the AST was created
+ * @param unit the AST that was created from the source
+ */
+ ResolvableCompilationUnit.con1(int modificationTime, CompilationUnit unit) : this.con2(modificationTime, unit, null);
+
+ /**
+ * Initialize a newly created holder to hold the given values.
+ *
+ * @param modificationTime the modification time of the source from which the AST was created
+ * @param unit the AST that was created from the source
+ * @param source the source of the compilation unit
+ */
+ ResolvableCompilationUnit.con2(int modificationTime, CompilationUnit unit, this.source) : super(modificationTime, unit);
+
+ /**
+ * Return the AST that was created from the source.
+ *
+ * @return the AST that was created from the source
+ */
+ CompilationUnit get compilationUnit => data;
+}
+
+/**
+ * Instances of the class `ResolvableHtmlUnit` represent an HTML unit that is not referenced
+ * by any other objects and for which we have modification stamp information. It is used by the
+ * [ResolveHtmlTask] to resolve an HTML source.
+ */
+class ResolvableHtmlUnit extends TimestampedData<ht.HtmlUnit> {
+ /**
+ * Initialize a newly created holder to hold the given values.
+ *
+ * @param modificationTime the modification time of the source from which the AST was created
+ * @param unit the AST that was created from the source
+ */
+ ResolvableHtmlUnit(int modificationTime, ht.HtmlUnit unit) : super(modificationTime, unit);
+
+ /**
+ * Return the AST that was created from the source.
+ *
+ * @return the AST that was created from the source
+ */
+ ht.HtmlUnit get compilationUnit => data;
+}
+
+/**
+ * Instances of the class `ResolveAngularComponentTemplateTask` resolve HTML template
+ * referenced by [AngularComponentElement].
+ */
+class ResolveAngularComponentTemplateTask extends AnalysisTask {
+ /**
+ * The source to be resolved.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The HTML unit to be resolved.
+ */
+ final ht.HtmlUnit _unit;
+
+ /**
+ * The [AngularComponentElement] to resolve template for.
+ */
+ final AngularComponentElement _component;
+
+ /**
+ * The Angular application to resolve in context of.
+ */
+ final AngularApplication _application;
+
+ /**
+ * The [HtmlUnit] that was resolved by this task.
+ */
+ ht.HtmlUnit _resolvedUnit;
+
+ /**
+ * The resolution errors that were discovered while resolving the source.
+ */
+ List<AnalysisError> _resolutionErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be resolved
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param unit the HTML unit to be resolved
+ * @param component the component that uses this HTML template, not `null`
+ * @param application the Angular application to resolve in context of
+ */
+ ResolveAngularComponentTemplateTask(InternalAnalysisContext context, this.source, this.modificationTime, this._unit, this._component, this._application) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitResolveAngularComponentTemplateTask(this);
+
+ List<AnalysisError> get resolutionErrors => _resolutionErrors;
+
+ /**
+ * Return the [HtmlUnit] that was resolved by this task.
+ *
+ * @return the [HtmlUnit] that was resolved by this task
+ */
+ ht.HtmlUnit get resolvedUnit => _resolvedUnit;
+
+ @override
+ String get taskDescription => "resolve as Angular template ${source}";
+
+ @override
+ void internalPerform() {
+ //
+ // Prepare for resolution.
+ //
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ LineInfo lineInfo = context.getLineInfo(source);
+ //
+ // Perform resolution.
+ //
+ if (_application != null) {
+ AngularHtmlUnitResolver resolver = new AngularHtmlUnitResolver(context, errorListener, source, lineInfo, _unit);
+ resolver.resolveComponentTemplate(_application, _component);
+ _resolvedUnit = _unit;
+ }
+ //
+ // Remember the errors.
+ //
+ _resolutionErrors = errorListener.getErrorsForSource(source);
+ }
+}
+
+/**
+ * Instances of the class `ResolveAngularEntryHtmlTask` resolve a specific HTML file as an
+ * Angular entry point.
+ */
+class ResolveAngularEntryHtmlTask extends AnalysisTask {
+ /**
+ * The source to be resolved.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The HTML unit to be resolved.
+ */
+ final ht.HtmlUnit _unit;
+
+ /**
+ * The listener to record errors.
+ */
+ RecordingErrorListener _errorListener = new RecordingErrorListener();
+
+ /**
+ * The [HtmlUnit] that was resolved by this task.
+ */
+ ht.HtmlUnit _resolvedUnit;
+
+ /**
+ * The element produced by resolving the source.
+ */
+ HtmlElement _element = null;
+
+ /**
+ * The Angular application to resolve in context of.
+ */
+ AngularApplication _application;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be resolved
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param unit the HTML unit to be resolved
+ */
+ ResolveAngularEntryHtmlTask(InternalAnalysisContext context, this.source, this.modificationTime, this._unit) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitResolveAngularEntryHtmlTask(this);
+
+ /**
+ * Returns the [AngularApplication] for the Web application with this Angular entry point,
+ * maybe `null` if not an Angular entry point.
+ */
+ AngularApplication get application => _application;
+
+ HtmlElement get element => _element;
+
+ /**
+ * The resolution errors that were discovered while resolving the source.
+ */
+ List<AnalysisError> get entryErrors => _errorListener.getErrorsForSource(source);
+
+ /**
+ * Returns [AnalysisError]s recorded for the given [Source].
+ */
+ List<AnalysisError> getErrors(Source source) => _errorListener.getErrorsForSource(source);
+
+ /**
+ * Return the [HtmlUnit] that was resolved by this task.
+ *
+ * @return the [HtmlUnit] that was resolved by this task
+ */
+ ht.HtmlUnit get resolvedUnit => _resolvedUnit;
+
+ @override
+ String get taskDescription {
+ if (source == null) {
+ return "resolve as Angular entry point null source";
+ }
+ return "resolve as Angular entry point ${source.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ //
+ // Prepare for resolution.
+ //
+ LineInfo lineInfo = context.getLineInfo(source);
+ //
+ // Try to resolve as an Angular entry point.
+ //
+ _application = new AngularHtmlUnitResolver(context, _errorListener, source, lineInfo, _unit).calculateAngularApplication();
+ //
+ // Perform resolution.
+ //
+ if (_application != null) {
+ new AngularHtmlUnitResolver(context, _errorListener, source, lineInfo, _unit).resolveEntryPoint(_application);
+ }
+ //
+ // Remember the resolved unit.
+ //
+ _resolvedUnit = _unit;
+ }
+}
+
+/**
+ * Instances of the class `ResolveDartLibraryTask` resolve a specific Dart library.
+ */
+class ResolveDartLibraryCycleTask extends AnalysisTask {
+ /**
+ * The source representing the file whose compilation unit is to be returned. TODO(brianwilkerson)
+ * This should probably be removed, but is being left in for now to ease the transition.
+ */
+ final Source unitSource;
+
+ /**
+ * The source representing the library to be resolved.
+ */
+ final Source librarySource;
+
+ /**
+ * The libraries that are part of the cycle containing the library to be resolved.
+ */
+ final List<ResolvableLibrary> _librariesInCycle;
+
+ /**
+ * The library resolver holding information about the libraries that were resolved.
+ */
+ LibraryResolver2 _resolver;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param unitSource the source representing the file whose compilation unit is to be returned
+ * @param librarySource the source representing the library to be resolved
+ * @param librariesInCycle the libraries that are part of the cycle containing the library to be
+ * resolved
+ */
+ ResolveDartLibraryCycleTask(InternalAnalysisContext context, this.unitSource, this.librarySource, this._librariesInCycle) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitResolveDartLibraryCycleTask(this);
+
+ /**
+ * Return the library resolver holding information about the libraries that were resolved.
+ *
+ * @return the library resolver holding information about the libraries that were resolved
+ */
+ LibraryResolver2 get libraryResolver => _resolver;
+
+ @override
+ String get taskDescription {
+ if (librarySource == null) {
+ return "resolve library null source";
+ }
+ return "resolve library ${librarySource.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ _resolver = new LibraryResolver2(context);
+ _resolver.resolveLibrary(librarySource, _librariesInCycle);
+ }
+}
+
+/**
+ * Instances of the class `ResolveDartLibraryTask` resolve a specific Dart library.
+ */
+class ResolveDartLibraryTask extends AnalysisTask {
+ /**
+ * The source representing the file whose compilation unit is to be returned.
+ */
+ final Source unitSource;
+
+ /**
+ * The source representing the library to be resolved.
+ */
+ final Source librarySource;
+
+ /**
+ * The library resolver holding information about the libraries that were resolved.
+ */
+ LibraryResolver _resolver;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param unitSource the source representing the file whose compilation unit is to be returned
+ * @param librarySource the source representing the library to be resolved
+ */
+ ResolveDartLibraryTask(InternalAnalysisContext context, this.unitSource, this.librarySource) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitResolveDartLibraryTask(this);
+
+ /**
+ * Return the library resolver holding information about the libraries that were resolved.
+ *
+ * @return the library resolver holding information about the libraries that were resolved
+ */
+ LibraryResolver get libraryResolver => _resolver;
+
+ @override
+ String get taskDescription {
+ if (librarySource == null) {
+ return "resolve library null source";
+ }
+ return "resolve library ${librarySource.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ _resolver = new LibraryResolver(context);
+ _resolver.resolveLibrary(librarySource, true);
+ }
+}
+
+/**
+ * Instances of the class `ResolveDartUnitTask` resolve a single Dart file based on a existing
+ * element model.
+ */
+class ResolveDartUnitTask extends AnalysisTask {
+ /**
+ * The source that is to be resolved.
+ */
+ final Source source;
+
+ /**
+ * The element model for the library containing the source.
+ */
+ final LibraryElement _libraryElement;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ int _modificationTime = -1;
+
+ /**
+ * The compilation unit that was resolved by this task.
+ */
+ CompilationUnit _resolvedUnit;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be parsed
+ * @param libraryElement the element model for the library containing the source
+ */
+ ResolveDartUnitTask(InternalAnalysisContext context, this.source, this._libraryElement) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitResolveDartUnitTask(this);
+
+ /**
+ * Return the source for the library containing the source that is to be resolved.
+ *
+ * @return the source for the library containing the source that is to be resolved
+ */
+ Source get librarySource => _libraryElement.source;
+
+ /**
+ * Return the time at which the contents of the source that was parsed were last modified, or a
+ * negative value if the task has not yet been performed or if an exception occurred.
+ *
+ * @return the time at which the contents of the source that was parsed were last modified
+ */
+ int get modificationTime => _modificationTime;
+
+ /**
+ * Return the compilation unit that was resolved by this task.
+ *
+ * @return the compilation unit that was resolved by this task
+ */
+ CompilationUnit get resolvedUnit => _resolvedUnit;
+
+ @override
+ String get taskDescription {
+ Source librarySource = _libraryElement.source;
+ if (librarySource == null) {
+ return "resolve unit null source";
+ }
+ return "resolve unit ${librarySource.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ TypeProvider typeProvider = (_libraryElement.context as InternalAnalysisContext).typeProvider;
+ ResolvableCompilationUnit resolvableUnit = context.computeResolvableCompilationUnit(source);
+ _modificationTime = resolvableUnit.modificationTime;
+ CompilationUnit unit = resolvableUnit.compilationUnit;
+ if (unit == null) {
+ throw new AnalysisException("Internal error: computeResolvableCompilationUnit returned a value without a parsed Dart unit");
+ }
+ //
+ // Resolve names in declarations.
+ //
+ new DeclarationResolver().resolve(unit, _find(_libraryElement, source));
+ //
+ // Resolve the type names.
+ //
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ TypeResolverVisitor typeResolverVisitor = new TypeResolverVisitor.con2(_libraryElement, source, typeProvider, errorListener);
+ unit.accept(typeResolverVisitor);
+ //
+ // Resolve the rest of the structure
+ //
+ InheritanceManager inheritanceManager = new InheritanceManager(_libraryElement);
+ ResolverVisitor resolverVisitor = new ResolverVisitor.con2(_libraryElement, source, typeProvider, inheritanceManager, errorListener);
+ unit.accept(resolverVisitor);
+ //
+ // Perform additional error checking.
+ //
+ TimeCounter_TimeCounterHandle counterHandleErrors = PerformanceStatistics.errors.start();
+ try {
+ ErrorReporter errorReporter = new ErrorReporter(errorListener, source);
+ ErrorVerifier errorVerifier = new ErrorVerifier(errorReporter, _libraryElement, typeProvider, inheritanceManager);
+ unit.accept(errorVerifier);
+ ConstantVerifier constantVerifier = new ConstantVerifier(errorReporter, _libraryElement, typeProvider);
+ unit.accept(constantVerifier);
+ } finally {
+ counterHandleErrors.stop();
+ }
+ //
+ // Capture the results.
+ //
+ _resolvedUnit = unit;
+ }
+
+ /**
+ * Search the compilation units that are part of the given library and return the element
+ * representing the compilation unit with the given source. Return `null` if there is no
+ * such compilation unit.
+ *
+ * @param libraryElement the element representing the library being searched through
+ * @param unitSource the source for the compilation unit whose element is to be returned
+ * @return the element representing the compilation unit
+ */
+ CompilationUnitElement _find(LibraryElement libraryElement, Source unitSource) {
+ CompilationUnitElement element = libraryElement.definingCompilationUnit;
+ if (element.source == unitSource) {
+ return element;
+ }
+ for (CompilationUnitElement partElement in libraryElement.parts) {
+ if (partElement.source == unitSource) {
+ return partElement;
+ }
+ }
+ return null;
+ }
+}
+
+/**
+ * Instances of the class `ResolveHtmlTask` resolve a specific source as an HTML file.
+ */
+class ResolveHtmlTask extends AnalysisTask {
+ /**
+ * The source to be resolved.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The HTML unit to be resolved.
+ */
+ final ht.HtmlUnit _unit;
+
+ /**
+ * The [HtmlUnit] that was resolved by this task.
+ */
+ ht.HtmlUnit _resolvedUnit;
+
+ /**
+ * The element produced by resolving the source.
+ */
+ HtmlElement _element = null;
+
+ /**
+ * The resolution errors that were discovered while resolving the source.
+ */
+ List<AnalysisError> _resolutionErrors = AnalysisError.NO_ERRORS;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be resolved
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param unit the HTML unit to be resolved
+ */
+ ResolveHtmlTask(InternalAnalysisContext context, this.source, this.modificationTime, this._unit) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitResolveHtmlTask(this);
+
+ HtmlElement get element => _element;
+
+ List<AnalysisError> get resolutionErrors => _resolutionErrors;
+
+ /**
+ * Return the [HtmlUnit] that was resolved by this task.
+ *
+ * @return the [HtmlUnit] that was resolved by this task
+ */
+ ht.HtmlUnit get resolvedUnit => _resolvedUnit;
+
+ @override
+ String get taskDescription {
+ if (source == null) {
+ return "resolve as html null source";
+ }
+ return "resolve as html ${source.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ //
+ // Build the standard HTML element.
+ //
+ HtmlUnitBuilder builder = new HtmlUnitBuilder(context);
+ _element = builder.buildHtmlElement(source, modificationTime, _unit);
+ RecordingErrorListener errorListener = builder.errorListener;
+ //
+ // Validate the directives
+ //
+ _unit.accept(new RecursiveXmlVisitor_ResolveHtmlTask_internalPerform(this, errorListener));
+ //
+ // Record all resolution errors.
+ //
+ _resolutionErrors = errorListener.getErrorsForSource(source);
+ //
+ // Remember the resolved unit.
+ //
+ _resolvedUnit = _unit;
+ }
+}
+
+/**
+ * The enumerated type `RetentionPriority` represents the priority of data in the cache in
+ * terms of the desirability of retaining some specified data about a specified source.
+ */
+class RetentionPriority extends Enum<RetentionPriority> {
+ /**
+ * A priority indicating that a given piece of data can be removed from the cache without
+ * reservation.
+ */
+ static const RetentionPriority LOW = const RetentionPriority('LOW', 0);
+
+ /**
+ * A priority indicating that a given piece of data should not be removed from the cache unless
+ * there are no sources for which the corresponding data has a lower priority. Currently used for
+ * data that is needed in order to finish some outstanding analysis task.
+ */
+ static const RetentionPriority MEDIUM = const RetentionPriority('MEDIUM', 1);
+
+ /**
+ * A priority indicating that a given piece of data should not be removed from the cache.
+ * Currently used for data related to a priority source.
+ */
+ static const RetentionPriority HIGH = const RetentionPriority('HIGH', 2);
+
+ static const List<RetentionPriority> values = const [LOW, MEDIUM, HIGH];
+
+ const RetentionPriority(String name, int ordinal) : super(name, ordinal);
+}
+
+/**
+ * Instances of the class `ScanDartTask` scan a specific source as a Dart file.
+ */
+class ScanDartTask extends AnalysisTask {
+ /**
+ * The source to be scanned.
+ */
+ final Source source;
+
+ /**
+ * The time at which the contents of the source were last modified.
+ */
+ final int modificationTime;
+
+ /**
+ * The contents of the source.
+ */
+ final String _content;
+
+ /**
+ * The token stream that was produced by scanning the source.
+ */
+ Token _tokenStream;
+
+ /**
+ * The line information that was produced.
+ */
+ LineInfo _lineInfo;
+
+ /**
+ * The errors that were produced by scanning the source.
+ */
+ List<AnalysisError> _errors = AnalysisError.NO_ERRORS;
+
+ /**
+ * Initialize a newly created task to perform analysis within the given context.
+ *
+ * @param context the context in which the task is to be performed
+ * @param source the source to be parsed
+ * @param modificationTime the time at which the contents of the source were last modified
+ * @param content the contents of the source
+ */
+ ScanDartTask(InternalAnalysisContext context, this.source, this.modificationTime, this._content) : super(context);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => visitor.visitScanDartTask(this);
+
+ /**
+ * Return the errors that were produced by scanning the source, or `null` if the task has
+ * not yet been performed or if an exception occurred.
+ *
+ * @return the errors that were produced by scanning the source
+ */
+ List<AnalysisError> get errors => _errors;
+
+ /**
+ * Return the line information that was produced, or `null` if the task has not yet been
+ * performed or if an exception occurred.
+ *
+ * @return the line information that was produced
+ */
+ LineInfo get lineInfo => _lineInfo;
+
+ /**
+ * Return the token stream that was produced by scanning the source, or `null` if the task
+ * has not yet been performed or if an exception occurred.
+ *
+ * @return the token stream that was produced by scanning the source
+ */
+ Token get tokenStream => _tokenStream;
+
+ @override
+ String get taskDescription {
+ if (source == null) {
+ return "scan as dart null source";
+ }
+ return "scan as dart ${source.fullName}";
+ }
+
+ @override
+ void internalPerform() {
+ RecordingErrorListener errorListener = new RecordingErrorListener();
+ TimeCounter_TimeCounterHandle timeCounterScan = PerformanceStatistics.scan.start();
+ try {
+ Scanner scanner = new Scanner(source, new CharSequenceReader(_content), errorListener);
+ scanner.preserveComments = context.analysisOptions.preserveComments;
+ _tokenStream = scanner.tokenize();
+ _lineInfo = new LineInfo(scanner.lineStarts);
+ _errors = errorListener.getErrorsForSource(source);
+ } catch (exception, stackTrace) {
+ throw new AnalysisException("Exception", new CaughtException(exception, stackTrace));
+ } finally {
+ timeCounterScan.stop();
+ }
+ }
+}
+
+/**
+ * Instances of the class `SdkAnalysisContext` implement an [AnalysisContext] that only
+ * contains sources for a Dart SDK.
+ */
+class SdkAnalysisContext extends AnalysisContextImpl {
+ @override
+ AnalysisCache createCacheFromSourceFactory(SourceFactory factory) {
+ if (factory == null) {
+ return super.createCacheFromSourceFactory(factory);
+ }
+ DartSdk sdk = factory.dartSdk;
+ if (sdk == null) {
+ throw new IllegalArgumentException("The source factory for an SDK analysis context must have a DartUriResolver");
+ }
+ return new AnalysisCache(<CachePartition> [AnalysisEngine.instance.partitionManager.forSdk(sdk)]);
+ }
+}
+
+/**
+ * Instances of the class `SdkCachePartition` implement a cache partition that contains all of
+ * the sources in the SDK.
+ */
+class SdkCachePartition extends CachePartition {
+ /**
+ * Initialize a newly created partition.
+ *
+ * @param maxCacheSize the maximum number of sources for which AST structures should be kept in
+ * the cache
+ */
+ SdkCachePartition(int maxCacheSize) : super(maxCacheSize, DefaultRetentionPolicy.POLICY);
+
+ @override
+ bool contains(Source source) => source.isInSystemLibrary;
+}
+
+/**
+ * The interface `SourceEntry` defines the behavior of objects that maintain the information
+ * cached by an analysis context about an individual source, no matter what kind of source it is.
+ *
+ * Source entries should be treated as if they were immutable unless a writable copy of the entry
+ * has been obtained and has not yet been made visible to other threads.
+ */
+abstract class SourceEntry {
+ /**
+ * The data descriptor representing the contents of the source.
+ */
+ static final DataDescriptor<String> CONTENT = new DataDescriptor<String>("DartEntry.CONTENT");
+
+ /**
+ * The data descriptor representing the line information.
+ */
+ static final DataDescriptor<LineInfo> LINE_INFO = new DataDescriptor<LineInfo>("SourceEntry.LINE_INFO");
+
+ /**
+ * Return the exception that caused one or more values to have a state of [CacheState#ERROR]
+ * .
+ *
+ * @return the exception that caused one or more values to be uncomputable
+ */
+ CaughtException get exception;
+
+ /**
+ * Return `true` if the source was explicitly added to the context or `false` if the
+ * source was implicitly added because it was referenced by another source.
+ *
+ * @return `true` if the source was explicitly added to the context
+ */
+ bool get explicitlyAdded;
+
+ /**
+ * Return the kind of the source, or `null` if the kind is not currently cached.
+ *
+ * @return the kind of the source
+ */
+ SourceKind get kind;
+
+ /**
+ * Return the most recent time at which the state of the source matched the state represented by
+ * this entry.
+ *
+ * @return the modification time of this entry
+ */
+ int get modificationTime;
+
+ /**
+ * Return the state of the data represented by the given descriptor.
+ *
+ * @param descriptor the descriptor representing the data whose state is to be returned
+ * @return the state of the data represented by the given descriptor
+ */
+ CacheState getState(DataDescriptor descriptor);
+
+ /**
+ * Return the value of the data represented by the given descriptor, or `null` if the data
+ * represented by the descriptor is not in the cache.
+ *
+ * @param descriptor the descriptor representing which data is to be returned
+ * @return the value of the data represented by the given descriptor
+ */
+ Object getValue(DataDescriptor descriptor);
+
+ /**
+ * Return a new entry that is initialized to the same state as this entry but that can be
+ * modified.
+ *
+ * @return a writable copy of this entry
+ */
+ SourceEntryImpl get writableCopy;
+}
+
+/**
+ * Instances of the abstract class `SourceEntryImpl` implement the behavior common to all
+ * [SourceEntry].
+ */
+abstract class SourceEntryImpl implements SourceEntry {
+ /**
+ * The most recent time at which the state of the source matched the state represented by this
+ * entry.
+ */
+ int _modificationTime = 0;
+
+ /**
+ * A bit-encoding of boolean flags associated with this element.
+ */
+ int _flags = 0;
+
+ /**
+ * The exception that caused one or more values to have a state of [CacheState#ERROR].
+ */
+ CaughtException _exception;
+
+ /**
+ * The state of the cached content.
+ */
+ CacheState _contentState = CacheState.INVALID;
+
+ /**
+ * The content of the source, or `null` if the content is not currently cached.
+ */
+ String _content;
+
+ /**
+ * The state of the cached line information.
+ */
+ CacheState _lineInfoState = CacheState.INVALID;
+
+ /**
+ * The line information computed for the source, or `null` if the line information is not
+ * currently cached.
+ */
+ LineInfo _lineInfo;
+
+ /**
+ * The index of the flag indicating whether the source was explicitly added to the context or
+ * whether the source was implicitly added because it was referenced by another source.
+ */
+ static int _EXPLICITLY_ADDED_FLAG = 0;
+
+ /**
+ * Fix the state of the [exception] to match the current state of the entry.
+ */
+ void fixExceptionState() {
+ if (hasErrorState) {
+ if (_exception == null) {
+ //
+ // This code should never be reached, but is a fail-safe in case an exception is not
+ // recorded when it should be.
+ //
+ _exception = new CaughtException(new AnalysisException("State set to ERROR without setting an exception"), null);
+ }
+ } else {
+ _exception = null;
+ }
+ }
+
+ /**
+ * Return a textual representation of the difference between the old entry and this entry. The
+ * difference is represented as a sequence of fields whose value would change if the old entry
+ * were converted into the new entry.
+ *
+ * @param oldEntry the entry being diff'd with this entry
+ * @return a textual representation of the difference
+ */
+ String getDiff(SourceEntry oldEntry) {
+ JavaStringBuilder builder = new JavaStringBuilder();
+ writeDiffOn(builder, oldEntry);
+ return builder.toString();
+ }
+
+ /**
+ * Return the exception that caused one or more values to have a state of [CacheState#ERROR]
+ * .
+ *
+ * @return the exception that caused one or more values to be uncomputable
+ */
+ @override
+ CaughtException get exception => _exception;
+
+ /**
+ * Return `true` if the source was explicitly added to the context or `false` if the
+ * source was implicitly added because it was referenced by another source.
+ *
+ * @return `true` if the source was explicitly added to the context
+ */
+ @override
+ bool get explicitlyAdded => getFlag(_EXPLICITLY_ADDED_FLAG);
+
+ @override
+ int get modificationTime => _modificationTime;
+
+ @override
+ CacheState getState(DataDescriptor descriptor) {
+ if (identical(descriptor, SourceEntry.CONTENT)) {
+ return _contentState;
+ } else if (identical(descriptor, SourceEntry.LINE_INFO)) {
+ return _lineInfoState;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+
+ @override
+ Object getValue(DataDescriptor descriptor) {
+ if (identical(descriptor, SourceEntry.CONTENT)) {
+ return _content;
+ } else if (identical(descriptor, SourceEntry.LINE_INFO)) {
+ return _lineInfo;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+
+ /**
+ * Invalidate all of the information associated with this source.
+ */
+ void invalidateAllInformation() {
+ _content = null;
+ _contentState = _checkContentState(CacheState.INVALID);
+ _lineInfo = null;
+ _lineInfoState = CacheState.INVALID;
+ }
+
+ /**
+ * Record that an error occurred while attempting to get the contents of the source represented by
+ * this entry. This will set the state of all information, including any resolution-based
+ * information, as being in error.
+ *
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordContentError(CaughtException exception) {
+ _content = null;
+ _contentState = CacheState.ERROR;
+ recordScanError(exception);
+ }
+
+ /**
+ * Record that an error occurred while attempting to scan or parse the entry represented by this
+ * entry. This will set the state of all information, including any resolution-based information,
+ * as being in error.
+ *
+ * @param exception the exception that shows where the error occurred
+ */
+ void recordScanError(CaughtException exception) {
+ this.exception = exception;
+ _lineInfo = null;
+ _lineInfoState = CacheState.ERROR;
+ }
+
+ /**
+ * Set whether the source was explicitly added to the context to match the given value.
+ *
+ * @param explicitlyAdded `true` if the source was explicitly added to the context
+ */
+ void set explicitlyAdded(bool explicitlyAdded) {
+ setFlag(_EXPLICITLY_ADDED_FLAG, explicitlyAdded);
+ }
+
+ /**
+ * Set the most recent time at which the state of the source matched the state represented by this
+ * entry to the given time.
+ *
+ * @param time the new modification time of this entry
+ */
+ void set modificationTime(int time) {
+ _modificationTime = time;
+ }
+
+ /**
+ * Set the state of the data represented by the given descriptor to the given state.
+ *
+ * @param descriptor the descriptor representing the data whose state is to be set
+ * @param the new state of the data represented by the given descriptor
+ */
+ void setState(DataDescriptor descriptor, CacheState state) {
+ if (identical(descriptor, SourceEntry.CONTENT)) {
+ _content = updatedValue(state, _content, null);
+ _contentState = _checkContentState(state);
+ } else if (identical(descriptor, SourceEntry.LINE_INFO)) {
+ _lineInfo = updatedValue(state, _lineInfo, null);
+ _lineInfoState = state;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+
+ /**
+ * Set the value of the data represented by the given descriptor to the given value.
+ *
+ * @param descriptor the descriptor representing the data whose value is to be set
+ * @param value the new value of the data represented by the given descriptor
+ */
+ void setValue(DataDescriptor descriptor, Object value) {
+ if (identical(descriptor, SourceEntry.CONTENT)) {
+ _content = value as String;
+ _contentState = _checkContentState(CacheState.VALID);
+ } else if (identical(descriptor, SourceEntry.LINE_INFO)) {
+ _lineInfo = value as LineInfo;
+ _lineInfoState = CacheState.VALID;
+ } else {
+ throw new IllegalArgumentException("Invalid descriptor: ${descriptor}");
+ }
+ }
+
+ @override
+ String toString() {
+ JavaStringBuilder builder = new JavaStringBuilder();
+ writeOn(builder);
+ return builder.toString();
+ }
+
+ /**
+ * Set the value of all of the flags with the given indexes to false.
+ *
+ * @param indexes the indexes of the flags whose value is to be set to false
+ */
+ void clearFlags(List<int> indexes) {
+ for (int i = 0; i < indexes.length; i++) {
+ _flags = BooleanArray.set(_flags, indexes[i], false);
+ }
+ }
+
+ /**
+ * Copy the information from the given cache entry.
+ *
+ * @param entry the cache entry from which information will be copied
+ */
+ void copyFrom(SourceEntryImpl entry) {
+ _modificationTime = entry._modificationTime;
+ _flags = entry._flags;
+ _exception = entry._exception;
+ _contentState = entry._contentState;
+ _content = entry._content;
+ _lineInfoState = entry._lineInfoState;
+ _lineInfo = entry._lineInfo;
+ }
+
+ /**
+ * Return the value of the flag with the given index.
+ *
+ * @param index the index of the flag whose value is to be returned
+ * @return the value of the flag with the given index
+ */
+ bool getFlag(int index) => BooleanArray.get(_flags, index);
+
+ /**
+ * Return `true` if the state of any data value is [CacheState#ERROR].
+ *
+ * @return `true` if the state of any data value is [CacheState#ERROR]
+ */
+ bool get hasErrorState => _contentState == CacheState.ERROR || _lineInfoState == CacheState.ERROR;
+
+ /**
+ * Set the exception that caused one or more values to have a state of [CacheState#ERROR] to
+ * the given exception.
+ *
+ * @param exception the exception that caused one or more values to be uncomputable
+ */
+ void set exception(CaughtException exception) {
+ if (exception == null) {
+ throw new IllegalArgumentException("exception cannot be null");
+ }
+ this._exception = exception;
+ }
+
+ /**
+ * Set the value of the flag with the given index to the given value.
+ *
+ * @param index the index of the flag whose value is to be returned
+ * @param value the value of the flag with the given index
+ */
+ void setFlag(int index, bool value) {
+ _flags = BooleanArray.set(_flags, index, value);
+ }
+
+ /**
+ * Given that some data is being transitioned to the given state, return the value that should be
+ * kept in the cache.
+ *
+ * @param state the state to which the data is being transitioned
+ * @param currentValue the value of the data before the transition
+ * @param defaultValue the value to be used if the current value is to be removed from the cache
+ * @return the value of the data that should be kept in the cache
+ */
+ Object updatedValue(CacheState state, Object currentValue, Object defaultValue) {
+ if (state == CacheState.VALID) {
+ throw new IllegalArgumentException("Use setValue() to set the state to VALID");
+ } else if (state == CacheState.IN_PROCESS) {
+ //
+ // We can leave the current value in the cache for any 'get' methods to access.
+ //
+ return currentValue;
+ }
+ return defaultValue;
+ }
+
+ /**
+ * Write a textual representation of the difference between the old entry and this entry to the
+ * given string builder.
+ *
+ * @param builder the string builder to which the difference is to be written
+ * @param oldEntry the entry that was replaced by this entry
+ * @return `true` if some difference was written
+ */
+ bool writeDiffOn(JavaStringBuilder builder, SourceEntry oldEntry) {
+ bool needsSeparator = false;
+ CaughtException oldException = oldEntry.exception;
+ if (!identical(oldException, _exception)) {
+ builder.append("exception = ");
+ builder.append(oldException.runtimeType);
+ builder.append(" -> ");
+ builder.append(_exception.runtimeType);
+ needsSeparator = true;
+ }
+ int oldModificationTime = oldEntry.modificationTime;
+ if (oldModificationTime != _modificationTime) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append("time = ");
+ builder.append(oldModificationTime);
+ builder.append(" -> ");
+ builder.append(_modificationTime);
+ needsSeparator = true;
+ }
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, SourceEntry.CONTENT, "content");
+ needsSeparator = writeStateDiffOn(builder, needsSeparator, oldEntry, SourceEntry.LINE_INFO, "lineInfo");
+ return needsSeparator;
+ }
+
+ /**
+ * Write a textual representation of this entry to the given builder. The result will only be used
+ * for debugging purposes.
+ *
+ * @param builder the builder to which the text should be written
+ */
+ void writeOn(JavaStringBuilder builder) {
+ builder.append("time = ");
+ builder.append(_modificationTime);
+ builder.append("; content = ");
+ builder.append(_contentState);
+ builder.append("; lineInfo = ");
+ builder.append(_lineInfoState);
+ }
+
+ /**
+ * Write a textual representation of the difference between the state of the specified data
+ * between the old entry and this entry to the given string builder.
+ *
+ * @param builder the string builder to which the difference is to be written
+ * @param needsSeparator `true` if any data that is written
+ * @param oldEntry the entry that was replaced by this entry
+ * @param descriptor the descriptor defining the data whose state is being compared
+ * @param label the label used to describe the state
+ * @return `true` if some difference was written
+ */
+ bool writeStateDiffOn(JavaStringBuilder builder, bool needsSeparator, SourceEntry oldEntry, DataDescriptor descriptor, String label) {
+ CacheState oldState = oldEntry.getState(descriptor);
+ CacheState newState = getState(descriptor);
+ if (oldState != newState) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append(label);
+ builder.append(" = ");
+ builder.append(oldState);
+ builder.append(" -> ");
+ builder.append(newState);
+ return true;
+ }
+ return needsSeparator;
+ }
+
+ /**
+ * If the state is changing from ERROR to anything else, capture the information. This is an
+ * attempt to discover the underlying cause of a long-standing bug.
+ *
+ * @param newState the new state of the content
+ * @return the new state of the content
+ */
+ CacheState _checkContentState(CacheState newState) {
+ if (_contentState == CacheState.ERROR) {
+ InstrumentationBuilder builder = Instrumentation.builder2("SourceEntryImpl-checkContentState");
+ builder.data3("message", "contentState changing from ${_contentState} to ${newState}");
+ //builder.data("source", source.getFullName());
+ builder.record(new CaughtException(new AnalysisException(), null));
+ builder.log();
+ }
+ return newState;
+ }
+}
+
+/**
+ * The enumerated type `Priority` defines the priority levels used to return sources in an
+ * optimal order. A smaller ordinal value equates to a higher priority.
+ */
+class SourcePriority extends Enum<SourcePriority> {
+ /**
+ * Used for a Dart source that is known to be a part contained in a library that was recently
+ * resolved. These parts are given a higher priority because there is a high probability that
+ * their AST structure is still in the cache and therefore would not need to be re-created.
+ */
+ static const SourcePriority PRIORITY_PART = const SourcePriority('PRIORITY_PART', 0);
+
+ /**
+ * Used for a Dart source that is known to be a library.
+ */
+ static const SourcePriority LIBRARY = const SourcePriority('LIBRARY', 1);
+
+ /**
+ * Used for a Dart source whose kind is unknown.
+ */
+ static const SourcePriority UNKNOWN = const SourcePriority('UNKNOWN', 2);
+
+ /**
+ * Used for a Dart source that is known to be a part but whose library has not yet been resolved.
+ */
+ static const SourcePriority NORMAL_PART = const SourcePriority('NORMAL_PART', 3);
+
+ /**
+ * Used for an HTML source.
+ */
+ static const SourcePriority HTML = const SourcePriority('HTML', 4);
+
+ static const List<SourcePriority> values = const [PRIORITY_PART, LIBRARY, UNKNOWN, NORMAL_PART, HTML];
+
+ const SourcePriority(String name, int ordinal) : super(name, ordinal);
+}
+
+/**
+ * Instances of the class `TimestampedData` represent analysis data for which we have a
+ * modification time.
+ */
+class TimestampedData<E> {
+ /**
+ * The modification time of the source from which the data was created.
+ */
+ final int modificationTime;
+
+ /**
+ * The data that was created from the source.
+ */
+ final E data;
+
+ /**
+ * Initialize a newly created holder to hold the given values.
+ *
+ * @param modificationTime the modification time of the source from which the data was created
+ * @param unit the data that was created from the source
+ */
+ TimestampedData(this.modificationTime, this.data);
+}
+
+/**
+ * Instances of the class `UniversalCachePartition` implement a cache partition that contains
+ * all sources not contained in other partitions.
+ */
+class UniversalCachePartition extends CachePartition {
+ /**
+ * Initialize a newly created partition.
+ *
+ * @param maxCacheSize the maximum number of sources for which AST structures should be kept in
+ * the cache
+ * @param retentionPolicy the policy used to determine which pieces of data to remove from the
+ * cache
+ */
+ UniversalCachePartition(int maxCacheSize, CacheRetentionPolicy retentionPolicy) : super(maxCacheSize, retentionPolicy);
+
+ @override
+ bool contains(Source source) => true;
+}
+
+/**
+ * The unique instances of the class `WaitForAsyncTask` represents a state in which there is
+ * no analysis work that can be done until some asynchronous task (such as IO) has completed, but
+ * where analysis is not yet complete.
+ */
+class WaitForAsyncTask extends AnalysisTask {
+ /**
+ * The unique instance of this class.
+ */
+ static WaitForAsyncTask _UniqueInstance = new WaitForAsyncTask();
+
+ /**
+ * Return the unique instance of this class.
+ *
+ * @return the unique instance of this class
+ */
+ static WaitForAsyncTask get instance => _UniqueInstance;
+
+ /**
+ * Prevent the creation of instances of this class.
+ */
+ WaitForAsyncTask() : super(null);
+
+ @override
+ accept(AnalysisTaskVisitor visitor) => null;
+
+ @override
+ String get taskDescription => "Waiting for async analysis";
+
+ @override
+ void internalPerform() {
+ }
+}
+
+/**
+ * Instances of the class `WorkManager` manage a list of sources that need to have analysis
+ * work performed on them.
+ */
+class WorkManager {
+ /**
+ * An array containing the various queues is priority order.
+ */
+ List<List<Source>> _workQueues;
+
+ /**
+ * Initialize a newly created manager to have no work queued up.
+ */
+ WorkManager() {
+ int queueCount = SourcePriority.values.length;
+ _workQueues = new List<List>(queueCount);
+ for (int i = 0; i < queueCount; i++) {
+ _workQueues[i] = new List<Source>();
+ }
+ }
+
+ /**
+ * Record that the given source needs to be analyzed. The priority level is used to control when
+ * the source will be analyzed with respect to other sources. If the source was previously added
+ * then it's priority is updated. If it was previously added with the same priority then it's
+ * position in the queue is unchanged.
+ *
+ * @param source the source that needs to be analyzed
+ * @param priority the priority level of the source
+ */
+ void add(Source source, SourcePriority priority) {
+ int queueCount = _workQueues.length;
+ int ordinal = priority.ordinal;
+ for (int i = 0; i < queueCount; i++) {
+ List<Source> queue = _workQueues[i];
+ if (i == ordinal) {
+ if (!queue.contains(source)) {
+ queue.add(source);
+ }
+ } else {
+ queue.remove(source);
+ }
+ }
+ }
+
+ /**
+ * Record that the given source needs to be analyzed. The priority level is used to control when
+ * the source will be analyzed with respect to other sources. If the source was previously added
+ * then it's priority is updated. In either case, it will be analyzed before other sources of the
+ * same priority.
+ *
+ * @param source the source that needs to be analyzed
+ * @param priority the priority level of the source
+ */
+ void addFirst(Source source, SourcePriority priority) {
+ int queueCount = _workQueues.length;
+ int ordinal = priority.ordinal;
+ for (int i = 0; i < queueCount; i++) {
+ List<Source> queue = _workQueues[i];
+ if (i == ordinal) {
+ queue.remove(source);
+ queue.insert(0, source);
+ } else {
+ queue.remove(source);
+ }
+ }
+ }
+
+ /**
+ * Return an iterator that can be used to access the sources to be analyzed in the order in which
+ * they should be analyzed.
+ *
+ * <b>Note:</b> As with other iterators, no sources can be added or removed from this work manager
+ * while the iterator is being used. Unlike some implementations, however, the iterator will not
+ * detect when this requirement has been violated; it might work correctly, it might return the
+ * wrong source, or it might throw an exception.
+ *
+ * @return an iterator that can be used to access the next source to be analyzed
+ */
+ WorkManager_WorkIterator iterator() => new WorkManager_WorkIterator(this);
+
+ /**
+ * Record that the given source is fully analyzed.
+ *
+ * @param source the source that is fully analyzed
+ */
+ void remove(Source source) {
+ int queueCount = _workQueues.length;
+ for (int i = 0; i < queueCount; i++) {
+ _workQueues[i].remove(source);
+ }
+ }
+
+ @override
+ String toString() {
+ JavaStringBuilder builder = new JavaStringBuilder();
+ List<SourcePriority> priorities = SourcePriority.values;
+ bool needsSeparator = false;
+ int queueCount = _workQueues.length;
+ for (int i = 0; i < queueCount; i++) {
+ List<Source> queue = _workQueues[i];
+ if (!queue.isEmpty) {
+ if (needsSeparator) {
+ builder.append("; ");
+ }
+ builder.append(priorities[i]);
+ builder.append(": ");
+ int queueSize = queue.length;
+ for (int j = 0; j < queueSize; j++) {
+ if (j > 0) {
+ builder.append(", ");
+ }
+ builder.append(queue[j].fullName);
+ }
+ needsSeparator = true;
+ }
+ }
+ return builder.toString();
+ }
+}
+
+/**
+ * Instances of the class `WorkIterator` implement an iterator that returns the sources in a
+ * work manager in the order in which they are to be analyzed.
+ */
+class WorkManager_WorkIterator {
+ final WorkManager WorkManager_this;
+
+ /**
+ * The index of the work queue through which we are currently iterating.
+ */
+ int _queueIndex = 0;
+
+ /**
+ * The index of the next element of the work queue to be returned.
+ */
+ int _index = -1;
+
+ /**
+ * Initialize a newly created iterator to be ready to return the first element in the iteration.
+ */
+ WorkManager_WorkIterator(this.WorkManager_this) {
+ _advance();
+ }
+
+ /**
+ * Return `true` if there is another [Source] available for processing.
+ *
+ * @return `true` if there is another [Source] available for processing
+ */
+ bool get hasNext => _queueIndex < WorkManager_this._workQueues.length;
+
+ /**
+ * Return the next [Source] available for processing and advance so that the returned
+ * source will not be returned again.
+ *
+ * @return the next [Source] available for processing
+ */
+ Source next() {
+ if (!hasNext) {
+ throw new NoSuchElementException();
+ }
+ Source source = WorkManager_this._workQueues[_queueIndex][_index];
+ _advance();
+ return source;
+ }
+
+ /**
+ * Increment the [index] and [queueIndex] so that they are either indicating the
+ * next source to be returned or are indicating that there are no more sources to be returned.
+ */
+ void _advance() {
+ _index++;
+ if (_index >= WorkManager_this._workQueues[_queueIndex].length) {
+ _index = 0;
+ _queueIndex++;
+ while (_queueIndex < WorkManager_this._workQueues.length && WorkManager_this._workQueues[_queueIndex].isEmpty) {
+ _queueIndex++;
+ }
+ }
+ }
+}

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