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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 part of ssa; | 5 part of ssa; |
6 | 6 |
7 class SsaCodeGeneratorTask extends CompilerTask { | 7 class SsaCodeGeneratorTask extends CompilerTask { |
8 | 8 |
9 final JavaScriptBackend backend; | 9 final JavaScriptBackend backend; |
10 | 10 |
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2416 } | 2416 } |
2417 if (node.hasTypeInfo()) { | 2417 if (node.hasTypeInfo()) { |
2418 InterfaceType interfaceType = type; | 2418 InterfaceType interfaceType = type; |
2419 ClassElement cls = type.element; | 2419 ClassElement cls = type.element; |
2420 Link<DartType> arguments = interfaceType.typeArguments; | 2420 Link<DartType> arguments = interfaceType.typeArguments; |
2421 js.Expression result = pop(); | 2421 js.Expression result = pop(); |
2422 for (TypeVariableType typeVariable in cls.typeVariables) { | 2422 for (TypeVariableType typeVariable in cls.typeVariables) { |
2423 use(node.typeInfoCall); | 2423 use(node.typeInfoCall); |
2424 int index = RuntimeTypeInformation.getTypeVariableIndex(typeVariable); | 2424 int index = RuntimeTypeInformation.getTypeVariableIndex(typeVariable); |
2425 js.PropertyAccess field = new js.PropertyAccess.indexed(pop(), index); | 2425 js.PropertyAccess field = new js.PropertyAccess.indexed(pop(), index); |
2426 RuntimeTypeInformation rti = backend.rti; | |
2427 String typeName = rti.getStringRepresentation(arguments.head); | |
2428 js.Expression genericName = new js.LiteralString("'$typeName'"); | |
2429 js.Binary eqTest = new js.Binary('===', field, genericName); | |
2430 // Also test for 'undefined' in case the object does not have | 2426 // Also test for 'undefined' in case the object does not have |
2431 // any type variable. | 2427 // any type variable. |
2432 js.Prefix undefinedTest = new js.Prefix('!', field); | 2428 js.Prefix undefinedTest = new js.Prefix('!', field); |
2433 result = new js.Binary( | 2429 if (arguments.head == compiler.types.dynamicType) { |
2434 '&&', result, new js.Binary('||', undefinedTest, eqTest)); | 2430 result = new js.Binary('&&', result, undefinedTest); |
| 2431 } else { |
| 2432 RuntimeTypeInformation rti = backend.rti; |
| 2433 String typeName = rti.getStringRepresentation(arguments.head); |
| 2434 js.Expression genericName = new js.LiteralString("'$typeName'"); |
| 2435 js.Binary eqTest = new js.Binary('===', field, genericName); |
| 2436 result = new js.Binary( |
| 2437 '&&', result, new js.Binary('||', undefinedTest, eqTest)); |
| 2438 } |
2435 arguments = arguments.tail; | 2439 arguments = arguments.tail; |
2436 } | 2440 } |
2437 push(result, node); | 2441 push(result, node); |
2438 } | 2442 } |
2439 if (node.nullOk) { | 2443 if (node.nullOk) { |
2440 checkNull(input); | 2444 checkNull(input); |
2441 push(new js.Binary('||', pop(), pop()), node); | 2445 push(new js.Binary('||', pop(), pop()), node); |
2442 } | 2446 } |
2443 } | 2447 } |
2444 | 2448 |
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3049 if (leftType.canBeNull() && rightType.canBeNull()) { | 3053 if (leftType.canBeNull() && rightType.canBeNull()) { |
3050 if (left.isConstantNull() || right.isConstantNull() || | 3054 if (left.isConstantNull() || right.isConstantNull() || |
3051 (leftType.isPrimitive() && leftType == rightType)) { | 3055 (leftType.isPrimitive() && leftType == rightType)) { |
3052 return '=='; | 3056 return '=='; |
3053 } | 3057 } |
3054 return null; | 3058 return null; |
3055 } else { | 3059 } else { |
3056 return '==='; | 3060 return '==='; |
3057 } | 3061 } |
3058 } | 3062 } |
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