Refactor SourceFile, SourceFileProvider and SourceLocation.

sdk/lib/_internal/pub/lib/src/barback/dart2js_transformer.dart

 // Copyright (c) 2013, 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 pub.dart2js_transformer;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:analyzer/analyzer.dart';
@@ skipping 254 matching lines @@
 
   /// A [CompilerInputProvider] for dart2js.
   Future<String> provideInput(Uri resourceUri) {
     // We only expect to get absolute "file:" URLs from dart2js.
     assert(resourceUri.isAbsolute);
     assert(resourceUri.scheme == "file");
 
     var sourcePath = path.fromUri(resourceUri);
     return _readResource(resourceUri).then((source) {
       _sourceFiles[resourceUri.toString()] =
-          new StringSourceFile(path.relative(sourcePath), source);
+          new StringSourceFile(resourceUri, path.relative(sourcePath), source);
       return source;
     });
   }
 
   /// A [CompilerOutputProvider] for dart2js.
   EventSink<String> provideOutput(String name, String extension) {
     // TODO(rnystrom): Do this more cleanly. See: #17403.
     if (!generateSourceMaps && extension.endsWith(".map")) {
       return new NullSink<String>();
     }
@@ skipping 122 matching lines @@
   }
 }
 
 /// An [EventSink] that discards all data. Provided to dart2js when we don't
 /// want an actual output.
 class NullSink<T> implements EventSink<T> {
   void add(T event) {}
   void addError(errorEvent, [StackTrace stackTrace]) {}
   void close() {}
 }