Roll Observatory packages and add a roll script

analyzer/lib/src/task/html.dart

Index: analyzer/lib/src/task/html.dart
diff --git a/analyzer/lib/src/task/html.dart b/analyzer/lib/src/task/html.dart
deleted file mode 100644
index 0722ed4288a8c845cd874b535a91a83a8f8d3012..0000000000000000000000000000000000000000
--- a/analyzer/lib/src/task/html.dart
+++ /dev/null
@@ -1,370 +0,0 @@
-// 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);
-}