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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 /// Implementation of the smoke services using mirrors. | 5 /// Implementation of the smoke services using mirrors. |
| 6 library smoke.mirrors; | 6 library smoke.mirrors; |
| 7 | 7 |
| 8 import 'dart:mirrors'; | 8 import 'dart:mirrors'; |
| 9 import 'package:smoke/smoke.dart'; | 9 import 'package:smoke/smoke.dart'; |
| 10 import 'package:logging/logging.dart'; | 10 import 'package:logging/logging.dart'; |
| 11 import 'src/common.dart'; | 11 import 'src/common.dart'; |
| 12 | 12 |
| 13 /// Set up the smoke package to use a mirror-based implementation. To tune what | 13 /// Set up the smoke package to use a mirror-based implementation. To tune what |
| 14 /// is preserved by `dart:mirrors`, use a @MirrorsUsed annotation and include | 14 /// is preserved by `dart:mirrors`, use a @MirrorsUsed annotation and include |
| 15 /// 'smoke.mirrors' in your override arguments. | 15 /// 'smoke.mirrors' in your override arguments. |
| 16 useMirrors() { | 16 useMirrors() { |
| 17 configure(new ReflectiveObjectAccessorService(), | 17 configure(new ReflectiveObjectAccessorService(), |
| 18 new ReflectiveTypeInspectorService(), | 18 new ReflectiveTypeInspectorService(), |
| 19 new ReflectiveSymbolConverterService()); | 19 new ReflectiveSymbolConverterService()); |
| 20 } | 20 } |
| 21 | 21 |
| 22 var _logger = new Logger('smoke.mirrors'); | 22 var _logger = new Logger('smoke.mirrors'); |
| 23 | 23 |
| 24 | 24 |
| 25 /// Implements [ObjectAccessorService] using mirrors. | 25 /// Implements [ObjectAccessorService] using mirrors. |
| 26 class ReflectiveObjectAccessorService implements ObjectAccessorService { | 26 class ReflectiveObjectAccessorService implements ObjectAccessorService { |
| 27 read(Object object, Symbol name) { | 27 read(Object object, Symbol name) => reflect(object).getField(name).reflectee; |
| 28 var decl = getDeclaration(object.runtimeType, name); | |
| 29 if (decl != null && decl.isMethod) { | |
| 30 // TODO(sigmund,jmesserly): remove this once dartbug.com/13002 is fixed. | |
| 31 return new _MethodClosure(object, name); | |
| 32 } else { | |
| 33 return reflect(object).getField(name).reflectee; | |
| 34 } | |
| 35 } | |
| 36 | 28 |
| 37 void write(Object object, Symbol name, value) { | 29 void write(Object object, Symbol name, value) { |
| 38 reflect(object).setField(name, value); | 30 reflect(object).setField(name, value); |
| 39 } | 31 } |
| 40 | 32 |
| 41 invoke(receiver, Symbol methodName, List args, | 33 invoke(receiver, Symbol methodName, List args, |
| 42 {Map namedArgs, bool adjust: false}) { | 34 {Map namedArgs, bool adjust: false}) { |
| 43 var receiverMirror; | 35 var receiverMirror; |
| 44 var method; | 36 var method; |
| 45 if (receiver is Type) { | 37 if (receiver is Type) { |
| (...skipping 273 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 319 String toString() => (new StringBuffer() | 311 String toString() => (new StringBuffer() |
| 320 ..write('(mirror-based-declaration ') | 312 ..write('(mirror-based-declaration ') |
| 321 ..write(name) | 313 ..write(name) |
| 322 ..write(isField ? ' (field) ' | 314 ..write(isField ? ' (field) ' |
| 323 : (isProperty ? ' (property) ' : ' (method) ')) | 315 : (isProperty ? ' (property) ' : ' (method) ')) |
| 324 ..write(isFinal ? 'final ' : '') | 316 ..write(isFinal ? 'final ' : '') |
| 325 ..write(isStatic ? 'static ' : '') | 317 ..write(isStatic ? 'static ' : '') |
| 326 ..write(annotations) | 318 ..write(annotations) |
| 327 ..write(')')).toString(); | 319 ..write(')')).toString(); |
| 328 } | 320 } |
| 329 | |
| 330 class _MethodClosure extends Function { | |
| 331 final receiver; | |
| 332 final Symbol methodName; | |
| 333 | |
| 334 _MethodClosure(this.receiver, this.methodName); | |
| 335 | |
| 336 // Technically we could just use noSuchMethod to implement [call], but we | |
| 337 // don't for 3 reasons: | |
| 338 // * noSuchMethod makes the code a lot bigger. | |
| 339 // * even with noSuchMethod, an analyzer bug requires to declare [call] (see | |
| 340 // dartbug.com/16078). | |
| 341 // * having [call] also allows `is` checks to work for functions of 0 | |
| 342 // through 3 arguments. We depend on this in | |
| 343 // `polymer_expressions/lib/eval.dart` to check whether a function is a | |
| 344 // filter (takes a single argument). (Note that it's possible to include | |
| 345 // both [call] and [noSuchMethod], which would make instance-of checks | |
| 346 // work with the signature of [call], but will allow invoking the function | |
| 347 // using [noSuchMethod]. | |
| 348 call([a, b, c]) => invoke(receiver, methodName, [a, b, c], adjust: true); | |
| 349 } | |
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