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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 js_backend; | 5 part of js_backend; |
6 | 6 |
7 class ConstantEmitter { | 7 class ConstantEmitter { |
8 ConstantReferenceEmitter _referenceEmitter; | 8 ConstantReferenceEmitter _referenceEmitter; |
9 ConstantInitializerEmitter _initializerEmitter; | 9 ConstantInitializerEmitter _initializerEmitter; |
10 | 10 |
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137 return emitCanonicalVersion(constant); | 137 return emitCanonicalVersion(constant); |
138 } | 138 } |
139 | 139 |
140 jsAst.Expression visitConstructed(ConstructedConstant constant) { | 140 jsAst.Expression visitConstructed(ConstructedConstant constant) { |
141 return emitCanonicalVersion(constant); | 141 return emitCanonicalVersion(constant); |
142 } | 142 } |
143 | 143 |
144 jsAst.Expression visitInterceptor(InterceptorConstant constant) { | 144 jsAst.Expression visitInterceptor(InterceptorConstant constant) { |
145 return emitCanonicalVersion(constant); | 145 return emitCanonicalVersion(constant); |
146 } | 146 } |
147 | |
148 jsAst.Expression visitDummyReceiver(DummyReceiverConstant constant) { | |
149 return new jsAst.LiteralNumber('0'); | |
150 } | |
151 } | 147 } |
152 | 148 |
153 /** | 149 /** |
154 * Visitor for generating JavaScript expressions to initialize [Constant]s. | 150 * Visitor for generating JavaScript expressions to initialize [Constant]s. |
155 * Do not use directly; use methods from [ConstantEmitter]. | 151 * Do not use directly; use methods from [ConstantEmitter]. |
156 */ | 152 */ |
157 class ConstantInitializerEmitter implements ConstantVisitor<jsAst.Expression> { | 153 class ConstantInitializerEmitter implements ConstantVisitor<jsAst.Expression> { |
158 final Compiler compiler; | 154 final Compiler compiler; |
159 final Namer namer; | 155 final Namer namer; |
160 final ConstantReferenceEmitter referenceEmitter; | 156 final ConstantReferenceEmitter referenceEmitter; |
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310 [typeName]); | 306 [typeName]); |
311 } | 307 } |
312 | 308 |
313 jsAst.Expression visitInterceptor(InterceptorConstant constant) { | 309 jsAst.Expression visitInterceptor(InterceptorConstant constant) { |
314 return new jsAst.PropertyAccess.field( | 310 return new jsAst.PropertyAccess.field( |
315 new jsAst.VariableUse( | 311 new jsAst.VariableUse( |
316 getJsConstructor(constant.dispatchedType.element)), | 312 getJsConstructor(constant.dispatchedType.element)), |
317 'prototype'); | 313 'prototype'); |
318 } | 314 } |
319 | 315 |
320 jsAst.Expression visitDummyReceiver(DummyReceiverConstant constant) { | |
321 return _reference(constant); | |
322 } | |
323 | |
324 jsAst.Expression visitConstructed(ConstructedConstant constant) { | 316 jsAst.Expression visitConstructed(ConstructedConstant constant) { |
325 Element element = constant.type.element; | 317 Element element = constant.type.element; |
326 if (element.isForeign(compiler) | 318 if (element.isForeign(compiler) |
327 && element.name == 'JS_CONST') { | 319 && element.name == 'JS_CONST') { |
328 StringConstant str = constant.fields[0]; | 320 StringConstant str = constant.fields[0]; |
329 String value = str.value.slowToString(); | 321 String value = str.value.slowToString(); |
330 return new jsAst.LiteralExpression(stripComments(value)); | 322 return new jsAst.LiteralExpression(stripComments(value)); |
331 } | 323 } |
332 jsAst.New instantiation = new jsAst.New( | 324 jsAst.New instantiation = new jsAst.New( |
333 new jsAst.VariableUse(getJsConstructor(constant.type.element)), | 325 new jsAst.VariableUse(getJsConstructor(constant.type.element)), |
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359 .map((DartType type) => | 351 .map((DartType type) => |
360 rti.getTypeRepresentationWithHashes(type, (_){})); | 352 rti.getTypeRepresentationWithHashes(type, (_){})); |
361 jsAst.Expression argumentList = | 353 jsAst.Expression argumentList = |
362 new jsAst.LiteralString('[${arguments.join(', ')}]'); | 354 new jsAst.LiteralString('[${arguments.join(', ')}]'); |
363 return new jsAst.Call(getHelperProperty(backend.getSetRuntimeTypeInfo()), | 355 return new jsAst.Call(getHelperProperty(backend.getSetRuntimeTypeInfo()), |
364 [value, argumentList]); | 356 [value, argumentList]); |
365 } | 357 } |
366 return value; | 358 return value; |
367 } | 359 } |
368 } | 360 } |
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