Add CompilationUnitElement.lineInfo and resynthesize it.

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 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 1019 matching lines @@
 /**
  * A task that builds a compilation unit element for a single compilation unit.
  */
 class BuildCompilationUnitElementTask extends SourceBasedAnalysisTask {
   /**
    * The name of the input whose value is the AST for the compilation unit.
    */
   static const String PARSED_UNIT_INPUT_NAME = 'PARSED_UNIT_INPUT_NAME';
 
   /**
+   * The name of the input whose value is the source line info.
+   */
+  static const String LINE_INFO_INPUT_NAME = 'LINE_INFO_INPUT_NAME';
+
+  /**
    * The task descriptor describing this kind of task.
    */
   static final TaskDescriptor DESCRIPTOR = new TaskDescriptor(
       'BuildCompilationUnitElementTask',
       createTask,
       buildInputs, <ResultDescriptor>[
     COMPILATION_UNIT_CONSTANTS,
     COMPILATION_UNIT_ELEMENT,
     CREATED_RESOLVED_UNIT1,
     RESOLVED_UNIT1
@@ skipping 11 matching lines @@
   TaskDescriptor get descriptor => DESCRIPTOR;
 
   @override
   void internalPerform() {
     //
     // Prepare inputs.
     //
     LibrarySpecificUnit librarySpecificUnit = target;
     Source source = getRequiredSource();
     CompilationUnit unit = getRequiredInput(PARSED_UNIT_INPUT_NAME);
+    LineInfo lineInfo = getRequiredInput(LINE_INFO_INPUT_NAME);
     //
     // Try to get the existing CompilationUnitElement.
     //
     CompilationUnitElement element;
     {
       InternalAnalysisContext internalContext =
           context as InternalAnalysisContext;
       AnalysisCache analysisCache = internalContext.analysisCache;
       CacheEntry cacheEntry = internalContext.getCacheEntry(target);
       element = analysisCache.getValue(target, COMPILATION_UNIT_ELEMENT);
       if (element == null &&
           internalContext.aboutToComputeResult(
               cacheEntry, COMPILATION_UNIT_ELEMENT)) {
         element = analysisCache.getValue(target, COMPILATION_UNIT_ELEMENT);
       }
     }
     //
     // Build or reuse CompilationUnitElement.
     //
     if (element == null) {
       CompilationUnitBuilder builder = new CompilationUnitBuilder();
       element = builder.buildCompilationUnit(
           source, unit, librarySpecificUnit.library);
+      (element as CompilationUnitElementImpl).lineInfo = lineInfo;
     } else {
       new DeclarationResolver().resolve(unit, element);
     }
     //
     // Prepare constants.
     //
     ConstantFinder constantFinder = new ConstantFinder();
     unit.accept(constantFinder);
     List<ConstantEvaluationTarget> constants =
         constantFinder.constantsToCompute.toList();
     //
     // Record outputs.
     //
     outputs[COMPILATION_UNIT_CONSTANTS] = constants;
     outputs[COMPILATION_UNIT_ELEMENT] = element;
     outputs[RESOLVED_UNIT1] = unit;
     outputs[CREATED_RESOLVED_UNIT1] = true;
   }
 
   /**
    * 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(AnalysisTarget target) {
     LibrarySpecificUnit unit = target;
     return <String, TaskInput>{
-      PARSED_UNIT_INPUT_NAME: PARSED_UNIT.of(unit.unit, flushOnAccess: true)
+      PARSED_UNIT_INPUT_NAME: PARSED_UNIT.of(unit.unit, flushOnAccess: true),
+      LINE_INFO_INPUT_NAME: LINE_INFO.of(unit.unit)
     };
   }
 
   /**
    * Create a [BuildCompilationUnitElementTask] based on the given [target] in
    * the given [context].
    */
   static BuildCompilationUnitElementTask createTask(
       AnalysisContext context, AnalysisTarget target) {
     return new BuildCompilationUnitElementTask(context, target);
@@ skipping 5423 matching lines @@
 
   @override
   bool moveNext() {
     if (_newSources.isEmpty) {
       return false;
     }
     currentTarget = _newSources.removeLast();
     return true;
   }
 }