Add lookupInScope to DeclarationMirror.

tests/compiler/dart2js/memory_compiler.dart

Index: tests/compiler/dart2js/memory_compiler.dart
diff --git a/tests/compiler/dart2js/memory_compiler.dart b/tests/compiler/dart2js/memory_compiler.dart
new file mode 100644
index 0000000000000000000000000000000000000000..3bf07d2d93b1e0217d2c16252e4023760849f919
--- /dev/null
+++ b/tests/compiler/dart2js/memory_compiler.dart
@@ -0,0 +1,68 @@
+// 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 dart2js.test.memory_compiler;
+
+import 'package:expect/expect.dart';

[Andrei Mouravski, 2013/07/03 17:49:49]

Nit: we've been formatting imports as:

dart:imports
\n
package:imports
\n
local/relative dir imports

+import 'memory_source_file_helper.dart';
+
+import '../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart'
+       show NullSink;
+
+import '../../../sdk/lib/_internal/compiler/compiler.dart'
+       show DiagnosticHandler;
+
+import 'dart:async';
+
+import '../../../sdk/lib/_internal/compiler/implementation/mirrors/mirrors.dart';
+import '../../../sdk/lib/_internal/compiler/implementation/mirrors/dart2js_mirror.dart';
+
+Compiler compilerFor(Map<String,String> memorySourceFiles, 

[Andrei Mouravski, 2013/07/03 17:49:49]

A brief doc comment for this would be useful.

+                     {DiagnosticHandler diagnosticHandler,
+                      List<String> options: const []}) {
+  Uri script = currentDirectory.resolve(nativeToUriPath(Platform.script));

[Andrei Mouravski, 2013/07/03 17:49:49]

I'm always bad with paths: does this require that the current directory is some
specific place?

+  Uri libraryRoot = script.resolve('../../../sdk/');
+  Uri packageRoot = script.resolve('./packages/');
+
+  MemorySourceFileProvider.MEMORY_SOURCE_FILES = memorySourceFiles;
+  var provider = new MemorySourceFileProvider();
+  if (diagnosticHandler == null) {
+    diagnosticHandler = new FormattingDiagnosticHandler(provider);
+  }
+  
+  EventSink<String> outputProvider(String name, String extension) {
+    if (name != '') throw 'Attempt to output file "$name.$extension"';
+    return new NullSink('$name.$extension');
+  }
+
+  Compiler compiler = new Compiler(provider.readStringFromUri,
+                                   outputProvider,
+                                   diagnosticHandler,
+                                   libraryRoot,
+                                   packageRoot,
+                                   options);
+  return compiler;
+}
+
+Future<MirrorSystem> mirrorSystemFor(Map<String,String> memorySourceFiles, 
+                                     {DiagnosticHandler diagnosticHandler,
+                                      List<String> options: const []}) {
+  Uri script = currentDirectory.resolve(nativeToUriPath(Platform.script));
+  Uri libraryRoot = script.resolve('../../../sdk/');
+  Uri packageRoot = script.resolve('./packages/');
+
+  MemorySourceFileProvider.MEMORY_SOURCE_FILES = memorySourceFiles;
+  var provider = new MemorySourceFileProvider();
+  if (diagnosticHandler == null) {
+    diagnosticHandler = new FormattingDiagnosticHandler(provider);
+  }
+  
+  List<Uri> libraries = <Uri>[];
+  memorySourceFiles.forEach((String path, _) {
+    libraries.add(new Uri(scheme: 'memory', path: path));
+  });
+  
+  return analyze(libraries, libraryRoot, packageRoot, 
+                 provider, diagnosticHandler, options);
+}