Record SourceKind.UNKNOWN for not existing sources.

pkg/analyzer/lib/src/task/dart.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.dart;
 
 import 'dart:collection';
 import 'dart:math' as math;
 
 import 'package:analyzer/src/context/cache.dart';
@@ skipping 2561 matching lines @@
  * A task that parses the content of a Dart file, producing an AST structure.
  */
 class ParseDartTask extends SourceBasedAnalysisTask {
   /**
    * The name of the input whose value is the line information produced for the
    * file.
    */
   static const String LINE_INFO_INPUT_NAME = 'LINE_INFO_INPUT_NAME';
 
   /**
+   * The name of the input whose value is the modification time of the file.
+   */
+  static const String MODIFICATION_TIME_INPUT_NAME =
+      'MODIFICATION_TIME_INPUT_NAME';
+
+  /**
    * The name of the input whose value is the token stream produced for the file.
    */
   static const String TOKEN_STREAM_INPUT_NAME = 'TOKEN_STREAM_INPUT_NAME';
 
   /**
    * The task descriptor describing this kind of task.
    */
   static final TaskDescriptor DESCRIPTOR = new TaskDescriptor('ParseDartTask',
       createTask, buildInputs, <ResultDescriptor>[
     EXPLICITLY_IMPORTED_LIBRARIES,
@@ skipping 13 matching lines @@
   ParseDartTask(InternalAnalysisContext context, AnalysisTarget target)
       : super(context, target);
 
   @override
   TaskDescriptor get descriptor => DESCRIPTOR;
 
   @override
   void internalPerform() {
     Source source = getRequiredSource();
     LineInfo lineInfo = getRequiredInput(LINE_INFO_INPUT_NAME);
+    int modificationTime = getRequiredInput(MODIFICATION_TIME_INPUT_NAME);
     Token tokenStream = getRequiredInput(TOKEN_STREAM_INPUT_NAME);
 
     RecordingErrorListener errorListener = new RecordingErrorListener();
     Parser parser = new Parser(source, errorListener);
     AnalysisOptions options = context.analysisOptions;
     parser.parseFunctionBodies = options.analyzeFunctionBodiesPredicate(source);
     CompilationUnit unit = parser.parseCompilationUnit(tokenStream);
     unit.lineInfo = lineInfo;
 
     bool hasNonPartOfDirective = false;
@@ skipping 30 matching lines @@
     // Always include "dart:core" source.
     //
     HashSet<Source> importedSourceSet =
         new HashSet.from(explicitlyImportedSourceSet);
     Source coreLibrarySource = context.sourceFactory.forUri(DartSdk.DART_CORE);
     importedSourceSet.add(coreLibrarySource);
     //
     // Compute kind.
     //
     SourceKind sourceKind = SourceKind.LIBRARY;
-    if (!hasNonPartOfDirective && hasPartOfDirective) {
+    if (modificationTime == -1) {
+      sourceKind = SourceKind.UNKNOWN;
+    } else if (!hasNonPartOfDirective && hasPartOfDirective) {
       sourceKind = SourceKind.PART;
     }
     //
     // Record outputs.
     //
     List<Source> explicitlyImportedSources =
         explicitlyImportedSourceSet.toList();
     List<Source> exportedSources = exportedSourceSet.toList();
     List<Source> importedSources = importedSourceSet.toList();
     List<Source> includedSources = includedSourceSet.toList();
@@ skipping 10 matching lines @@
   }
 
   /**
    * 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>{
       LINE_INFO_INPUT_NAME: LINE_INFO.of(source),
+      MODIFICATION_TIME_INPUT_NAME: MODIFICATION_TIME.of(source),
       TOKEN_STREAM_INPUT_NAME: TOKEN_STREAM.of(source)
     };
   }
 
   /**
    * Create a [ParseDartTask] based on the given [target] in the given
    * [context].
    */
   static ParseDartTask createTask(
       AnalysisContext context, AnalysisTarget target) {
@@ skipping 658 matching lines @@
   @override
   bool moveNext() {
     if (_newSources.isEmpty) {
       return false;
     }
     currentTarget = _newSources.first;
     _newSources.remove(currentTarget);
     return true;
   }
 }