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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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