Get more tests passing using the new task model

pkg/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.
  */
@@ skipping 247 matching lines @@
   ParseHtmlTask(InternalAnalysisContext context, AnalysisTarget target)
       : super(context, target);
 
   @override
   TaskDescriptor get descriptor => DESCRIPTOR;
 
   @override
   void internalPerform() {
     String content = getRequiredInput(CONTENT_INPUT_NAME);
 
-    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]));
+    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;
     }
-
-    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)};
   }
@@ skipping 32 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);
 }