Removed fixed dependencies

packages/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/error/error.dart';
+import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/src/context/cache.dart';
-import 'package:analyzer/src/generated/engine.dart' hide AnalysisTask;
-import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/dart/scanner/scanner.dart';
+import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
-import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/plugin/engine_plugin.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';
@@ skipping 43 matching lines @@
   @override
   String get encoding => source.encoding;
 
   @override
   String get fullName => source.fullName;
 
   @override
   bool get isInSystemLibrary => source.isInSystemLibrary;
 
   @override
+  Source get librarySource => source;
+
+  @override
   int get modificationStamp => source.modificationStamp;
 
   @override
   String get shortName => source.shortName;
 
   @override
-  Uri get uri => throw new StateError('uri not supported for scripts');
+  Uri get uri => source.uri
+      .replace(queryParameters: {'offset': fragments[0].offset.toString()});
 
   @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.
    */
@@ skipping 58 matching lines @@
         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) {
+  static Map<String, TaskInput> buildInputs(AnalysisTarget 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);
@@ skipping 50 matching lines @@
     // Record outputs.
     //
     outputs[HTML_ERRORS] = AnalysisError.mergeLists(errorLists);
   }
 
   /**
    * 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) {
+  static Map<String, TaskInput> buildInputs(AnalysisTarget target) {
     EnginePlugin enginePlugin = AnalysisEngine.instance.enginePlugin;
     Map<String, TaskInput> inputs = <String, TaskInput>{
       DART_ERRORS_INPUT: DART_SCRIPTS.of(target).toListOf(DART_ERRORS)
     };
     for (ResultDescriptor result in enginePlugin.htmlErrors) {
       String inputName = result.name + INPUT_SUFFIX;
       inputs[inputName] = result.of(target);
     }
     return inputs;
   }
@@ skipping 11 matching lines @@
 /**
  * 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 name of the input whose value is the modification time of the file.
+   */
+  static const String MODIFICATION_TIME_INPUT = 'MODIFICATION_TIME_INPUT';
+
+  /**
    * The task descriptor describing this kind of task.
    */
   static final TaskDescriptor DESCRIPTOR = new TaskDescriptor(
       'ParseHtmlTask',
       createTask,
       buildInputs,
-      <ResultDescriptor>[HTML_DOCUMENT, HTML_DOCUMENT_ERRORS, LINE_INFO]);
+      <ResultDescriptor>[HTML_DOCUMENT, HTML_DOCUMENT_ERRORS, LINE_INFO],
+      suitabilityFor: suitabilityFor);
 
   /**
    * 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) {
+    int modificationTime = getRequiredInput(MODIFICATION_TIME_INPUT);
+    if (modificationTime < 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])
       ];
       outputs[LINE_INFO] = new LineInfo(<int>[0]);
     } else {
-      HtmlParser parser = new HtmlParser(content, generateSpans: true);
+      HtmlParser parser = new HtmlParser(content,
+          generateSpans: true, lowercaseAttrName: false);
       parser.compatMode = 'quirks';
       Document document = parser.parse();
       //
       // Convert errors.
       //
-      List<ParseError> parseErrors = parser.errors;
       List<AnalysisError> errors = <AnalysisError>[];
-      for (ParseError parseError in parseErrors) {
-        if (parseError.errorCode == 'expected-doctype-but-got-start-tag') {
-          continue;
-        }
-        SourceSpan span = parseError.span;
-        errors.add(new AnalysisError(target.source, span.start.offset,
-            span.length, HtmlErrorCode.PARSE_ERROR, [parseError.message]));
-      }
+      // TODO(scheglov) https://github.com/dart-lang/sdk/issues/24643
+//      List<ParseError> parseErrors = parser.errors;
+//      for (ParseError parseError in parseErrors) {
+//        if (parseError.errorCode == 'expected-doctype-but-got-start-tag') {
+//          continue;
+//        }
+//        SourceSpan span = parseError.span;
+//        errors.add(new AnalysisError(target.source, span.start.offset,
+//            span.length, HtmlErrorCode.PARSE_ERROR, [parseError.message]));
+//      }
       //
       // Record outputs.
       //
       outputs[HTML_DOCUMENT] = document;
       outputs[HTML_DOCUMENT_ERRORS] = errors;
       outputs[LINE_INFO] = _computeLineInfo(content);
     }
   }
 
   /**
    * 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)};
+  static Map<String, TaskInput> buildInputs(AnalysisTarget source) {
+    return <String, TaskInput>{
+      CONTENT_INPUT_NAME: CONTENT.of(source),
+      MODIFICATION_TIME_INPUT: MODIFICATION_TIME.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);
   }
 
   /**
+   * Return an indication of how suitable this task is for the given [target].
+   */
+  static TaskSuitability suitabilityFor(AnalysisTarget target) {
+    if (target is Source) {
+      String name = target.shortName;
+      if (name.endsWith(AnalysisEngine.SUFFIX_HTML) ||
+          name.endsWith(AnalysisEngine.SUFFIX_HTM)) {
+        return TaskSuitability.HIGHEST;
+      }
+    }
+    return TaskSuitability.NONE;
+  }
+
+  /**
    * Compute [LineInfo] for the given [content].
    */
   static LineInfo _computeLineInfo(String content) {
-    List<int> lineStarts = <int>[0];
-    for (int index = 0; index < content.length; index++) {
-      if (content.codeUnitAt(index) == 0x0A) {
-        lineStarts.add(index + 1);
-      }
-    }
+    List<int> lineStarts = StringUtilities.computeLineStarts(content);
     return new LineInfo(lineStarts);
   }
 }
 
 /**
  * A fragment of a [DartScript].
  */
 class ScriptFragment {
   /**
    * The offset of the first character of the fragment, relative to the start of
@@ skipping 16 matching lines @@
    * 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);
 }