Implement MethodMirror.metadata.

dart/tests/lib/mirrors/metadata_test.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.
 
 @fisk @symbol
 library test.metadata_test;
 
 import 'dart:mirrors';
 
 const fisk = 'a metadata string';
 
 const symbol = const Symbol('fisk');
 
 @symbol @fisk
 class MyClass {
+  @fisk @symbol @fisk
+  myMethod() => 1;
 }
 
 checkMetadata(DeclarationMirror mirror, List expectedMetadata) {
   List metadata = mirror.metadata.map((m) => m.reflectee).toList();
   if (metadata == null) {
     throw 'Null metadata on $mirror';
   }
   int expectedLength = expectedMetadata.length;
   int actualLength = metadata.length;
   if (expectedLength != actualLength) {
     throw 'Expected length = $expectedLength, but got length = $actualLength.';
   }
   for (int i = 0; i < expectedLength; i++) {
     if (metadata[i] != expectedMetadata[i]) {
       throw '${metadata[i]} is not "${expectedMetadata[i]}"'
           ' in $mirror at index $i';
     }
   }
   print(metadata);
 }
 
+@symbol @fisk @symbol
 main() {
   if (MirrorSystem.getName(symbol) != 'fisk') {
     // This happened in dart2js due to how early library metadata is
     // computed.
     throw 'Bad constant: $symbol';
   }
 
   MirrorSystem mirrors = currentMirrorSystem();
   checkMetadata(mirrors.findLibrary(const Symbol('test.metadata_test')).first,
                 [fisk, symbol]);
   checkMetadata(reflect(new MyClass()).type, [symbol, fisk]);
+  ClosureMirror closure = reflect(main);
+  checkMetadata(closure.function, [symbol, fisk, symbol]);
+  closure = reflect(new MyClass().myMethod);
+  checkMetadata(closure.function, [fisk, symbol, fisk]);
 }

[kasperl, 2013/06/03 06:12:40]

No support for local functions yet?

[ahe, 2013/06/03 09:13:54]

Don't know.  Added a TODO.