| // 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 test.metadata_test; |
| |
| @MirrorsUsed(targets: "test.metadata_test") |
| import 'dart:mirrors'; |
| |
| const string = 'a metadata string'; |
| |
| const symbol = const Symbol('symbol'); |
| |
| const hest = 'hest'; |
| |
| @symbol |
| @string |
| class MyClass { |
| @hest |
| @hest |
| @symbol |
| var x; |
| var y; |
| |
| @string |
| @symbol |
| @string |
| myMethod() => 1; |
| myOtherMethod() => 2; |
| } |
| |
| 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 |
| @string |
| @symbol |
| main() { |
| if (MirrorSystem.getName(symbol) != 'symbol') { |
| // This happened in dart2js due to how early library metadata is |
| // computed. |
| throw 'Bad constant: $symbol'; |
| } |
| |
| MirrorSystem mirrors = currentMirrorSystem(); |
| ClassMirror myClassMirror = reflectClass(MyClass); |
| checkMetadata(myClassMirror, [symbol, string]); |
| LibraryMirror lib = mirrors.findLibrary(#test.metadata_test); |
| MethodMirror function = lib.declarations[#main]; |
| checkMetadata(function, [symbol, string, symbol]); |
| MethodMirror method = myClassMirror.declarations[#myMethod]; |
| checkMetadata(method, [string, symbol, string]); |
| method = myClassMirror.declarations[#myOtherMethod]; |
| checkMetadata(method, []); |
| |
| VariableMirror xMirror = myClassMirror.declarations[#x]; |
| checkMetadata(xMirror, [hest, hest, symbol]); |
| |
| VariableMirror yMirror = myClassMirror.declarations[#y]; |
| checkMetadata(yMirror, []); |
| |
| // TODO(ahe): Test local functions. |
| } |