Add a "librarySource" field to CompilationUnitElementImpl.

pkg/analyzer/test/src/task/dart_test.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 test.src.task.dart_test;
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/element.dart';
@@ skipping 1150 matching lines @@
   }
 }
 
 @reflectiveTest
 class ComputeConstantDependenciesTaskTest extends _AbstractDartTaskTest {
   test_perform() {
     Source source = newSource('/test.dart', '''
 const x = y;
 const y = 1;
 ''');
-    // First compute the library element for the source.
-    _computeResult(source, LIBRARY_ELEMENT1);
-    LibraryElement libraryElement = outputs[LIBRARY_ELEMENT1];
+    // First compute the resolved unit for the source.
+    LibrarySpecificUnit librarySpecificUnit =
+        new LibrarySpecificUnit(source, source);
+    _computeResult(librarySpecificUnit, RESOLVED_UNIT1);
+    CompilationUnit unit = outputs[RESOLVED_UNIT1];
     // Find the elements for the constants x and y.
-    List<PropertyAccessorElement> accessors =
-        libraryElement.definingCompilationUnit.accessors;
+    List<PropertyAccessorElement> accessors = unit.element.accessors;
     Element x = accessors.firstWhere((PropertyAccessorElement accessor) =>
         accessor.isGetter && accessor.name == 'x').variable;
     Element y = accessors.firstWhere((PropertyAccessorElement accessor) =>
         accessor.isGetter && accessor.name == 'y').variable;
     // Now compute the dependencies for x, and check that it is the list [y].
     _computeResult(x, CONSTANT_DEPENDENCIES);
     expect(outputs[CONSTANT_DEPENDENCIES], [y]);
   }
 }
 
@@ skipping 30 matching lines @@
 const x = 1;
 ''');
     expect(evaluationResult, isNotNull);
     expect(evaluationResult.value, isNotNull);
     expect(evaluationResult.value.intValue, 1);
   }
 
   EvaluationResultImpl _computeTopLevelVariableConstValue(
       String variableName, String content) {
     Source source = newSource('/test.dart', content);
-    // First compute the library element for the source.
-    _computeResult(source, LIBRARY_ELEMENT1);
-    LibraryElement libraryElement = outputs[LIBRARY_ELEMENT1];
+    // First compute the resolved unit for the source.
+    LibrarySpecificUnit librarySpecificUnit =
+        new LibrarySpecificUnit(source, source);
+    _computeResult(librarySpecificUnit, RESOLVED_UNIT1);
+    CompilationUnit unit = outputs[RESOLVED_UNIT1];
     // Find the element for the given constant.
-    List<PropertyAccessorElement> accessors =
-        libraryElement.definingCompilationUnit.accessors;
+    List<PropertyAccessorElement> accessors = unit.element.accessors;
     Element variableElement = accessors
         .firstWhere((PropertyAccessorElement accessor) {
       return accessor.isGetter && accessor.name == variableName;
     }).variable;
     // Now compute the value of the constant.
     _computeResult(variableElement, CONSTANT_EVALUATED_ELEMENT);
     expect(outputs[CONSTANT_EVALUATED_ELEMENT], same(variableElement));
     EvaluationResultImpl evaluationResult =
         (variableElement as TopLevelVariableElementImpl).evaluationResult;
     return evaluationResult;
@@ skipping 925 matching lines @@
   /**
    * Fill [errorListener] with [result] errors in the current [task].
    */
   void _fillErrorListener(ResultDescriptor<List<AnalysisError>> result) {
     List<AnalysisError> errors = task.outputs[result];
     expect(errors, isNotNull, reason: result.name);
     errorListener = new GatheringErrorListener();
     errorListener.addAll(errors);
   }
 }