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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 dart2js.js_emitter; | 5 part of dart2js.js_emitter; |
6 | 6 |
7 class ClassEmitter extends CodeEmitterHelper { | 7 class ClassEmitter extends CodeEmitterHelper { |
8 | 8 |
9 ClassStubGenerator get _stubGenerator => | 9 ClassStubGenerator get _stubGenerator => |
10 new ClassStubGenerator(compiler, namer, backend); | 10 new ClassStubGenerator(compiler, namer, backend); |
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41 emitInstanceMembers(cls, builder); | 41 emitInstanceMembers(cls, builder); |
42 emitStubs(cls.callStubs, builder); | 42 emitStubs(cls.callStubs, builder); |
43 emitStubs(cls.typeVariableReaderStubs, builder); | 43 emitStubs(cls.typeVariableReaderStubs, builder); |
44 emitRuntimeTypeInformation(cls, builder); | 44 emitRuntimeTypeInformation(cls, builder); |
45 emitNativeInfo(cls, builder); | 45 emitNativeInfo(cls, builder); |
46 | 46 |
47 if (classElement == backend.closureClass) { | 47 if (classElement == backend.closureClass) { |
48 // We add a special getter here to allow for tearing off a closure from | 48 // We add a special getter here to allow for tearing off a closure from |
49 // itself. | 49 // itself. |
50 jsAst.Fun function = js('function() { return this; }'); | 50 jsAst.Fun function = js('function() { return this; }'); |
51 String name = namer.getterForPublicMember(Compiler.CALL_OPERATOR_NAME); | 51 String name = namer.getterForMember(Selector.CALL_NAME); |
52 builder.addProperty(name, function); | 52 builder.addProperty(name, function); |
53 } | 53 } |
54 | 54 |
55 emitClassBuilderWithReflectionData(cls, builder, enclosingBuilder); | 55 emitClassBuilderWithReflectionData(cls, builder, enclosingBuilder); |
56 } | 56 } |
57 /** | 57 /** |
58 * Emits the precompiled constructor when in CSP mode. | 58 * Emits the precompiled constructor when in CSP mode. |
59 */ | 59 */ |
60 void emitConstructorsForCSP(Class cls) { | 60 void emitConstructorsForCSP(Class cls) { |
61 List<String> fieldNames = <String>[]; | 61 List<String> fieldNames = <String>[]; |
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96 assert(container is Library); | 96 assert(container is Library); |
97 assert(emitStatics); | 97 assert(emitStatics); |
98 fields = container.staticFieldsForReflection; | 98 fields = container.staticFieldsForReflection; |
99 } | 99 } |
100 | 100 |
101 var fieldMetadata = []; | 101 var fieldMetadata = []; |
102 bool hasMetadata = false; | 102 bool hasMetadata = false; |
103 bool fieldsAdded = false; | 103 bool fieldsAdded = false; |
104 | 104 |
105 for (Field field in fields) { | 105 for (Field field in fields) { |
106 VariableElement fieldElement = field.element; | 106 FieldElement fieldElement = field.element; |
107 String name = field.name; | 107 String name = field.name; |
108 String accessorName = field.accessorName; | 108 String accessorName = field.accessorName; |
109 bool needsGetter = field.needsGetter; | 109 bool needsGetter = field.needsGetter; |
110 bool needsSetter = field.needsUncheckedSetter; | 110 bool needsSetter = field.needsUncheckedSetter; |
111 | 111 |
112 // Ignore needsCheckedSetter - that is handled below. | 112 // Ignore needsCheckedSetter - that is handled below. |
113 bool needsAccessor = (needsGetter || needsSetter); | 113 bool needsAccessor = (needsGetter || needsSetter); |
114 // We need to output the fields for non-native classes so we can auto- | 114 // We need to output the fields for non-native classes so we can auto- |
115 // generate the constructor. For native classes there are no | 115 // generate the constructor. For native classes there are no |
116 // constructors, so we don't need the fields unless we are generating | 116 // constructors, so we don't need the fields unless we are generating |
117 // accessors at runtime. | 117 // accessors at runtime. |
118 bool needsFieldsForConstructor = !emitStatics && !classIsNative; | 118 bool needsFieldsForConstructor = !emitStatics && !classIsNative; |
119 if (needsFieldsForConstructor || needsAccessor) { | 119 if (needsFieldsForConstructor || needsAccessor) { |
120 var metadata = | 120 var metadata = |
121 task.metadataCollector.buildMetadataFunction(fieldElement); | 121 task.metadataCollector.buildMetadataFunction(fieldElement); |
122 if (metadata != null) { | 122 if (metadata != null) { |
123 hasMetadata = true; | 123 hasMetadata = true; |
124 } else { | 124 } else { |
125 metadata = new jsAst.LiteralNull(); | 125 metadata = new jsAst.LiteralNull(); |
126 } | 126 } |
127 fieldMetadata.add(metadata); | 127 fieldMetadata.add(metadata); |
128 recordMangledField(fieldElement, accessorName, | 128 recordMangledField(fieldElement, accessorName, |
129 namer.privateName(fieldElement.library, fieldElement.name)); | 129 namer.privateName(fieldElement.memberName)); |
130 String fieldName = name; | 130 String fieldName = name; |
131 String fieldCode = ''; | 131 String fieldCode = ''; |
132 String reflectionMarker = ''; | 132 String reflectionMarker = ''; |
133 if (!needsAccessor) { | 133 if (!needsAccessor) { |
134 // Emit field for constructor generation. | 134 // Emit field for constructor generation. |
135 assert(!classIsNative); | 135 assert(!classIsNative); |
136 } else { | 136 } else { |
137 // Emit (possibly renaming) field name so we can add accessors at | 137 // Emit (possibly renaming) field name so we can add accessors at |
138 // runtime. | 138 // runtime. |
139 if (name != accessorName) { | 139 if (name != accessorName) { |
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369 } else { | 369 } else { |
370 throw new SpannableAssertionFailure( | 370 throw new SpannableAssertionFailure( |
371 element, 'Expected a ClassElement or a LibraryElement.'); | 371 element, 'Expected a ClassElement or a LibraryElement.'); |
372 } | 372 } |
373 | 373 |
374 // If the class is never instantiated we still need to set it up for | 374 // If the class is never instantiated we still need to set it up for |
375 // inheritance purposes, but we can simplify its JavaScript constructor. | 375 // inheritance purposes, but we can simplify its JavaScript constructor. |
376 bool isInstantiated = | 376 bool isInstantiated = |
377 compiler.codegenWorld.directlyInstantiatedClasses.contains(element); | 377 compiler.codegenWorld.directlyInstantiatedClasses.contains(element); |
378 | 378 |
379 void visitField(Element holder, VariableElement field) { | 379 void visitField(Element holder, FieldElement field) { |
380 assert(invariant(element, field.isDeclaration)); | 380 assert(invariant(element, field.isDeclaration)); |
381 String name = field.name; | 381 String name = field.name; |
382 | 382 |
383 // Keep track of whether or not we're dealing with a field mixin | 383 // Keep track of whether or not we're dealing with a field mixin |
384 // into a native class. | 384 // into a native class. |
385 bool isMixinNativeField = | 385 bool isMixinNativeField = |
386 isClass && element.isNative && holder.isMixinApplication; | 386 isClass && element.isNative && holder.isMixinApplication; |
387 | 387 |
388 // See if we can dynamically create getters and setters. | 388 // See if we can dynamically create getters and setters. |
389 // We can only generate getters and setters for [element] since | 389 // We can only generate getters and setters for [element] since |
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544 ? new Selector.getter(member.name, member.library) | 544 ? new Selector.getter(member.name, member.library) |
545 : new Selector.setter(member.name, member.library); | 545 : new Selector.setter(member.name, member.library); |
546 String reflectionName = emitter.getReflectionName(selector, name); | 546 String reflectionName = emitter.getReflectionName(selector, name); |
547 if (reflectionName != null) { | 547 if (reflectionName != null) { |
548 var reflectable = | 548 var reflectable = |
549 js(backend.isAccessibleByReflection(member) ? '1' : '0'); | 549 js(backend.isAccessibleByReflection(member) ? '1' : '0'); |
550 builder.addProperty('+$reflectionName', reflectable); | 550 builder.addProperty('+$reflectionName', reflectable); |
551 } | 551 } |
552 } | 552 } |
553 } | 553 } |
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