Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/analyzer/lib/src/task/html.dart

+// Copyright (c) 2015, 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.
+
+library analyzer.src.task.html;
+
+import 'dart:collection';
+
+import 'package:analyzer/src/generated/engine.dart' hide AnalysisTask;
+import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/task/dart.dart';
+import 'package:analyzer/src/task/general.dart';
+import 'package:analyzer/task/dart.dart';
+import 'package:analyzer/task/general.dart';
+import 'package:analyzer/task/html.dart';
+import 'package:analyzer/task/model.dart';
+import 'package:html/dom.dart';
+import 'package:html/parser.dart';
+import 'package:source_span/source_span.dart';
+import 'package:analyzer/src/context/cache.dart';
+import 'package:analyzer/src/generated/java_engine.dart';
+import 'package:analyzer/src/generated/scanner.dart';
+
+/**
+ * The Dart scripts that are embedded in an HTML file.
+ */
+final ListResultDescriptor<DartScript> DART_SCRIPTS =
+    new ListResultDescriptor<DartScript>('DART_SCRIPTS', DartScript.EMPTY_LIST);
+
+/**
+ * The errors found while parsing an HTML file.
+ */
+final ListResultDescriptor<AnalysisError> HTML_DOCUMENT_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
+        'HTML_DOCUMENT_ERRORS', AnalysisError.NO_ERRORS);
+
+/**
+ * A Dart script that is embedded in an HTML file.
+ */
+class DartScript implements Source {
+  /**
+   * An empty list of scripts.
+   */
+  static final List<DartScript> EMPTY_LIST = <DartScript>[];
+
+  /**
+   * The source containing this script.
+   */
+  final Source source;
+
+  /**
+   * The fragments that comprise this content of the script.
+   */
+  final List<ScriptFragment> fragments;
+
+  /**
+   * Initialize a newly created script in the given [source] that is composed of
+   * given [fragments].
+   */
+  DartScript(this.source, this.fragments);
+
+  @override
+  TimestampedData<String> get contents =>
+      new TimestampedData(modificationStamp, fragments[0].content);
+
+  @override
+  String get encoding => source.encoding;
+
+  @override
+  String get fullName => source.fullName;
+
+  @override
+  bool get isInSystemLibrary => source.isInSystemLibrary;
+
+  @override
+  int get modificationStamp => source.modificationStamp;
+
+  @override
+  String get shortName => source.shortName;
+
+  @override
+  Uri get uri => throw new StateError('uri not supported for scripts');
+
+  @override
+  UriKind get uriKind =>
+      throw new StateError('uriKind not supported for scripts');
+
+  @override
+  bool exists() => source.exists();
+
+  @override
+  Uri resolveRelativeUri(Uri relativeUri) =>
+      throw new StateError('resolveRelativeUri not supported for scripts');
+}
+
+/**
+ * A task that looks for Dart scripts in an HTML file and computes both the Dart
+ * libraries that are referenced by those scripts and the embedded Dart scripts.
+ */
+class DartScriptsTask extends SourceBasedAnalysisTask {
+  /**
+   * The name of the [HTML_DOCUMENT] input.
+   */
+  static const String DOCUMENT_INPUT = 'DOCUMENT';
+
+  /**
+   * The task descriptor describing this kind of task.
+   */
+  static final TaskDescriptor DESCRIPTOR = new TaskDescriptor('DartScriptsTask',
+      createTask, buildInputs, <ResultDescriptor>[
+    DART_SCRIPTS,
+    REFERENCED_LIBRARIES
+  ]);
+
+  DartScriptsTask(InternalAnalysisContext context, AnalysisTarget target)
+      : super(context, target);
+
+  @override
+  TaskDescriptor get descriptor => DESCRIPTOR;
+
+  @override
+  void internalPerform() {
+    //
+    // Prepare inputs.
+    //
+    Source source = target.source;
+    Document document = getRequiredInput(DOCUMENT_INPUT);
+    //
+    // Process the script tags.
+    //
+    List<Source> libraries = <Source>[];
+    List<DartScript> inlineScripts = <DartScript>[];
+    List<Element> scripts = document.getElementsByTagName('script');
+    for (Element script in scripts) {
+      LinkedHashMap<dynamic, String> attributes = script.attributes;
+      if (attributes['type'] == 'application/dart') {
+        String src = attributes['src'];
+        if (src == null) {
+          if (script.hasContent()) {
+            List<ScriptFragment> fragments = <ScriptFragment>[];
+            for (Node node in script.nodes) {
+              if (node.nodeType == Node.TEXT_NODE) {
+                FileLocation start = node.sourceSpan.start;
+                fragments.add(new ScriptFragment(start.offset, start.line,
+                    start.column, (node as Text).data));
+              }
+            }
+            inlineScripts.add(new DartScript(source, fragments));
+          }
+        } else if (AnalysisEngine.isDartFileName(src)) {
+          Source source = context.sourceFactory.resolveUri(target.source, src);
+          if (source != null) {
+            libraries.add(source);
+          }
+        }
+      }
+    }
+    //
+    // Record outputs.
+    //
+    outputs[REFERENCED_LIBRARIES] =
+        libraries.isEmpty ? Source.EMPTY_LIST : libraries;
+    outputs[DART_SCRIPTS] =
+        inlineScripts.isEmpty ? DartScript.EMPTY_LIST : inlineScripts;
+  }
+
+  /**
+   * Return a map from the names of the inputs of this kind of task to the task
+   * input descriptors describing those inputs for a task with the
+   * given [target].
+   */
+  static Map<String, TaskInput> buildInputs(Source target) {
+    return <String, TaskInput>{DOCUMENT_INPUT: HTML_DOCUMENT.of(target)};
+  }
+
+  /**
+   * Create a [DartScriptsTask] based on the given [target] in the given
+   * [context].
+   */
+  static DartScriptsTask createTask(
+      AnalysisContext context, AnalysisTarget target) {
+    return new DartScriptsTask(context, target);
+  }
+}
+
+/**
+ * A task that merges all of the errors for a single source into a single list
+ * of errors.
+ */
+class HtmlErrorsTask extends SourceBasedAnalysisTask {
+  /**
+   * The name of the input that is a list of errors from each of the embedded
+   * Dart scripts.
+   */
+  static const String DART_ERRORS_INPUT = 'DART_ERRORS';
+
+  /**
+   * The name of the [HTML_DOCUMENT_ERRORS] input.
+   */
+  static const String DOCUMENT_ERRORS_INPUT = 'DOCUMENT_ERRORS';
+
+  /**
+   * The task descriptor describing this kind of task.
+   */
+  static final TaskDescriptor DESCRIPTOR = new TaskDescriptor('HtmlErrorsTask',
+      createTask, buildInputs, <ResultDescriptor>[HTML_ERRORS]);
+
+  HtmlErrorsTask(InternalAnalysisContext context, AnalysisTarget target)
+      : super(context, target);
+
+  @override
+  TaskDescriptor get descriptor => DESCRIPTOR;
+
+  @override
+  void internalPerform() {
+    //
+    // Prepare inputs.
+    //
+    List<List<AnalysisError>> dartErrors = getRequiredInput(DART_ERRORS_INPUT);
+    List<AnalysisError> documentErrors =
+        getRequiredInput(DOCUMENT_ERRORS_INPUT);
+    //
+    // Compute the error list.
+    //
+    List<AnalysisError> errors = <AnalysisError>[];
+    errors.addAll(documentErrors);
+    for (List<AnalysisError> scriptErrors in dartErrors) {
+      errors.addAll(scriptErrors);
+    }
+    //
+    // Record outputs.
+    //
+    outputs[HTML_ERRORS] = removeDuplicateErrors(errors);
+  }
+
+  /**
+   * Return a map from the names of the inputs of this kind of task to the task
+   * input descriptors describing those inputs for a task with the
+   * given [target].
+   */
+  static Map<String, TaskInput> buildInputs(Source target) {
+    return <String, TaskInput>{
+      DOCUMENT_ERRORS_INPUT: HTML_DOCUMENT_ERRORS.of(target),
+      DART_ERRORS_INPUT: DART_SCRIPTS.of(target).toListOf(DART_ERRORS)
+    };
+  }
+
+  /**
+   * Create an [HtmlErrorsTask] based on the given [target] in the given
+   * [context].
+   */
+  static HtmlErrorsTask createTask(
+      AnalysisContext context, AnalysisTarget target) {
+    return new HtmlErrorsTask(context, target);
+  }
+}
+
+/**
+ * A task that scans the content of a file, producing a set of Dart tokens.
+ */
+class ParseHtmlTask extends SourceBasedAnalysisTask {
+  /**
+   * The name of the input whose value is the content of the file.
+   */
+  static const String CONTENT_INPUT_NAME = 'CONTENT_INPUT_NAME';
+
+  /**
+   * The task descriptor describing this kind of task.
+   */
+  static final TaskDescriptor DESCRIPTOR = new TaskDescriptor('ParseHtmlTask',
+      createTask, buildInputs, <ResultDescriptor>[
+    HTML_DOCUMENT,
+    HTML_DOCUMENT_ERRORS
+  ]);
+
+  /**
+   * Initialize a newly created task to access the content of the source
+   * associated with the given [target] in the given [context].
+   */
+  ParseHtmlTask(InternalAnalysisContext context, AnalysisTarget target)
+      : super(context, target);
+
+  @override
+  TaskDescriptor get descriptor => DESCRIPTOR;
+
+  @override
+  void internalPerform() {
+    String content = getRequiredInput(CONTENT_INPUT_NAME);
+
+    if (context.getModificationStamp(target.source) < 0) {
+      String message = 'Content could not be read';
+      if (context is InternalAnalysisContext) {
+        CacheEntry entry = (context as InternalAnalysisContext).getCacheEntry(target);
+        CaughtException exception = entry.exception;
+        if (exception != null) {
+          message = exception.toString();
+        }
+      }
+
+      outputs[HTML_DOCUMENT] = new Document();
+      outputs[HTML_DOCUMENT_ERRORS] = <AnalysisError>[new AnalysisError(
+          target.source, 0, 0, ScannerErrorCode.UNABLE_GET_CONTENT, [message])];
+    } else {
+      HtmlParser parser = new HtmlParser(content, generateSpans: true);
+      parser.compatMode = 'quirks';
+      Document document = parser.parse();
+      List<ParseError> parseErrors = parser.errors;
+      List<AnalysisError> errors = <AnalysisError>[];
+      for (ParseError parseError in parseErrors) {
+        SourceSpan span = parseError.span;
+        errors.add(new AnalysisError(target.source, span.start.offset,
+            span.length, HtmlErrorCode.PARSE_ERROR, [parseError.message]));
+      }
+
+      outputs[HTML_DOCUMENT] = document;
+      outputs[HTML_DOCUMENT_ERRORS] = errors;
+    }
+  }
+
+  /**
+   * Return a map from the names of the inputs of this kind of task to the task
+   * input descriptors describing those inputs for a task with the given
+   * [source].
+   */
+  static Map<String, TaskInput> buildInputs(Source source) {
+    return <String, TaskInput>{CONTENT_INPUT_NAME: CONTENT.of(source)};
+  }
+
+  /**
+   * Create a [ParseHtmlTask] based on the given [target] in the given [context].
+   */
+  static ParseHtmlTask createTask(
+      AnalysisContext context, AnalysisTarget target) {
+    return new ParseHtmlTask(context, target);
+  }
+}
+
+/**
+ * A fragment of a [DartScript].
+ */
+class ScriptFragment {
+  /**
+   * The offset of the first character of the fragment, relative to the start of
+   * the containing source.
+   */
+  final int offset;
+
+  /**
+   * The line number of the line containing the first character of the fragment.
+   */
+  final int line;
+
+  /**
+   * The column number of the line containing the first character of the
+   * fragment.
+   */
+  final int column;
+
+  /**
+   * The content of the fragment.
+   */
+  final String content;
+
+  /**
+   * Initialize a newly created script fragment to have the given [offset] and
+   * [content].
+   */
+  ScriptFragment(this.offset, this.line, this.column, this.content);
+}