Create and test source mapping for invocations.

pkg/compiler/lib/src/compiler.dart

 // Copyright (c) 2012, 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.
 
 part of dart2js;
 
 /**
  * If true, print a warning for each method that was resolved, but not
  * compiled.
  */
@@ skipping 254 matching lines @@
   /// constants.
   BackendConstantEnvironment get constants;
 
   /// The compiler task responsible for the compilation of constants for both
   /// the frontend and the backend.
   ConstantCompilerTask get constantCompilerTask;
 
   /// Backend callback methods for the resolution phase.
   ResolutionCallbacks get resolutionCallbacks;
 
+  /// The strategy used for collecting and emitting source information.
+  SourceInformationStrategy get sourceInformationStrategy {
+    return const SourceInformationStrategy();
+  }
+
   // TODO(johnniwinther): Move this to the JavaScriptBackend.
   String get patchVersion => null;
 
   /// Set of classes that need to be considered for reflection although not
   /// otherwise visible during resolution.
   Iterable<ClassElement> classesRequiredForReflection = const [];
 
   // Given a [FunctionElement], return a buffer with the code generated for it
   // or null if no code was generated.
   CodeBuffer codeOf(Element element) => null;
@@ skipping 801 matching lines @@
 
     if (verbose) {
       progress = new Stopwatch()..start();
     }
 
     // TODO(johnniwinther): Separate the dependency tracking from the enqueuing
     // for global dependencies.
     globalDependencies =
         new CodegenRegistry(this, new TreeElementMapping(null));
 
-    SourceInformationFactory sourceInformationFactory =
-        const SourceInformationFactory();
-    if (generateSourceMap) {
-      sourceInformationFactory =
-          const bool.fromEnvironment('USE_NEW_SOURCE_INFO', defaultValue: false)
-              ? const PositionSourceInformationFactory()
-              : const StartEndSourceInformationFactory();
-    }
     if (emitJavaScript) {
-      js_backend.JavaScriptBackend jsBackend = new js_backend.JavaScriptBackend(
-      this, sourceInformationFactory, generateSourceMap: generateSourceMap);
+      js_backend.JavaScriptBackend jsBackend =
+          new js_backend.JavaScriptBackend(
+              this, generateSourceMap: generateSourceMap);
       backend = jsBackend;
     } else {
       backend = new dart_backend.DartBackend(this, strips,
                                              multiFile: dart2dartMultiFile);
       if (dumpInfo) {
         throw new ArgumentError('--dump-info is not supported for dart2dart.');
       }
     }
 
     tasks = [
       libraryLoader = new LibraryLoaderTask(this),
       scanner = new ScannerTask(this),
       dietParser = new DietParserTask(this),
       parser = new ParserTask(this),
       patchParser = new PatchParserTask(this),
       resolver = new ResolverTask(this, backend.constantCompilerTask),
       closureToClassMapper = new closureMapping.ClosureTask(this),
       checker = new TypeCheckerTask(this),
-      irBuilder = new IrBuilderTask(this, sourceInformationFactory),
+      irBuilder = new IrBuilderTask(this, backend.sourceInformationStrategy),
       typesTask = new ti.TypesTask(this),
       constants = backend.constantCompilerTask,
       deferredLoadTask = new DeferredLoadTask(this),
       mirrorUsageAnalyzerTask = new MirrorUsageAnalyzerTask(this),
       enqueuer = new EnqueueTask(this),
       dumpInfoTask = new DumpInfoTask(this),
       reuseLibraryTask = new GenericTask('Reuse library', this),
     ];
 
     tasks.addAll(backend.tasks);
@@ skipping 1371 matching lines @@
   InterfaceType streamType([DartType elementType]) {
     InterfaceType type = streamClass.computeType(compiler);
     if (elementType == null) {
       return streamClass.rawType;
     }
     return type.createInstantiation([elementType]);
   }
 }
 
 typedef void InternalErrorFunction(Spannable location, String message);