| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| part of js_backend; |
| |
| class JavaScriptItemCompilationContext extends ItemCompilationContext { |
| final Set<HInstruction> boundsChecked; |
| |
| JavaScriptItemCompilationContext() |
| : boundsChecked = new Set<HInstruction>(); |
| } |
| |
| class CheckedModeHelper { |
| final SourceString name; |
| |
| const CheckedModeHelper(SourceString this.name); |
| |
| Element getElement(Compiler compiler) => compiler.findHelper(name); |
| |
| jsAst.Expression generateCall(SsaCodeGenerator codegen, |
| HTypeConversion node) { |
| Element helperElement = getElement(codegen.compiler); |
| codegen.world.registerStaticUse(helperElement); |
| List<jsAst.Expression> arguments = <jsAst.Expression>[]; |
| codegen.use(node.checkedInput); |
| arguments.add(codegen.pop()); |
| generateAdditionalArguments(codegen, node, arguments); |
| String helperName = codegen.backend.namer.isolateAccess(helperElement); |
| return new jsAst.Call(new jsAst.VariableUse(helperName), arguments); |
| } |
| |
| void generateAdditionalArguments(SsaCodeGenerator codegen, |
| HTypeConversion node, |
| List<jsAst.Expression> arguments) { |
| // No additional arguments needed. |
| } |
| } |
| |
| class PropertyCheckedModeHelper extends CheckedModeHelper { |
| const PropertyCheckedModeHelper(SourceString name) : super(name); |
| |
| void generateAdditionalArguments(SsaCodeGenerator codegen, |
| HTypeConversion node, |
| List<jsAst.Expression> arguments) { |
| DartType type = node.typeExpression; |
| String additionalArgument = codegen.backend.namer.operatorIsType(type); |
| arguments.add(js.string(additionalArgument)); |
| } |
| } |
| |
| class TypeVariableCheckedModeHelper extends CheckedModeHelper { |
| const TypeVariableCheckedModeHelper(SourceString name) : super(name); |
| |
| void generateAdditionalArguments(SsaCodeGenerator codegen, |
| HTypeConversion node, |
| List<jsAst.Expression> arguments) { |
| assert(node.typeExpression.kind == TypeKind.TYPE_VARIABLE); |
| codegen.use(node.typeRepresentation); |
| arguments.add(codegen.pop()); |
| } |
| } |
| |
| class SubtypeCheckedModeHelper extends CheckedModeHelper { |
| const SubtypeCheckedModeHelper(SourceString name) : super(name); |
| |
| void generateAdditionalArguments(SsaCodeGenerator codegen, |
| HTypeConversion node, |
| List<jsAst.Expression> arguments) { |
| DartType type = node.typeExpression; |
| Element element = type.element; |
| String isField = codegen.backend.namer.operatorIs(element); |
| arguments.add(js.string(isField)); |
| codegen.use(node.typeRepresentation); |
| arguments.add(codegen.pop()); |
| String asField = codegen.backend.namer.substitutionName(element); |
| arguments.add(js.string(asField)); |
| } |
| } |
| |
| class FunctionTypeCheckedModeHelper extends CheckedModeHelper { |
| const FunctionTypeCheckedModeHelper(SourceString name) : super(name); |
| |
| void generateAdditionalArguments(SsaCodeGenerator codegen, |
| HTypeConversion node, |
| List<jsAst.Expression> arguments) { |
| DartType type = node.typeExpression; |
| String signatureName = codegen.backend.namer.getFunctionTypeName(type); |
| arguments.add(js.string(signatureName)); |
| |
| if (type.containsTypeVariables) { |
| ClassElement contextClass = Types.getClassContext(type); |
| String contextName = codegen.backend.namer.getName(contextClass); |
| arguments.add(js.string(contextName)); |
| |
| if (node.contextIsTypeArguments) { |
| arguments.add(new jsAst.LiteralNull()); |
| codegen.use(node.context); |
| arguments.add(codegen.pop()); |
| } else { |
| codegen.use(node.context); |
| arguments.add(codegen.pop()); |
| } |
| } |
| } |
| } |
| |
| /* |
| * Invariants: |
| * canInline(function) implies canInline(function, insideLoop:true) |
| * !canInline(function, insideLoop: true) implies !canInline(function) |
| */ |
| class FunctionInlineCache { |
| final Map<FunctionElement, bool> canBeInlined = |
| new Map<FunctionElement, bool>(); |
| |
| final Map<FunctionElement, bool> canBeInlinedInsideLoop = |
| new Map<FunctionElement, bool>(); |
| |
| // Returns [:true:]/[:false:] if we have a cached decision. |
| // Returns [:null:] otherwise. |
| bool canInline(FunctionElement element, {bool insideLoop}) { |
| return insideLoop ? canBeInlinedInsideLoop[element] : canBeInlined[element]; |
| } |
| |
| void markAsInlinable(FunctionElement element, {bool insideLoop}) { |
| if (insideLoop) { |
| canBeInlinedInsideLoop[element] = true; |
| } else { |
| // If we can inline a function outside a loop then we should do it inside |
| // a loop as well. |
| canBeInlined[element] = true; |
| canBeInlinedInsideLoop[element] = true; |
| } |
| } |
| |
| void markAsNonInlinable(FunctionElement element, {bool insideLoop}) { |
| if (insideLoop) { |
| // If we can't inline a function inside a loop, then we should not inline |
| // it outside a loop either. |
| canBeInlined[element] = false; |
| canBeInlinedInsideLoop[element] = false; |
| } else { |
| canBeInlined[element] = false; |
| } |
| } |
| } |
| |
| |
| class JavaScriptBackend extends Backend { |
| SsaBuilderTask builder; |
| SsaOptimizerTask optimizer; |
| SsaCodeGeneratorTask generator; |
| CodeEmitterTask emitter; |
| |
| /** |
| * The generated code as a js AST for compiled methods. |
| */ |
| Map<Element, jsAst.Expression> get generatedCode { |
| return compiler.enqueuer.codegen.generatedCode; |
| } |
| |
| /** |
| * The generated code as a js AST for compiled bailout methods. |
| */ |
| final Map<Element, jsAst.Expression> generatedBailoutCode = |
| new Map<Element, jsAst.Expression>(); |
| |
| FunctionInlineCache inlineCache = new FunctionInlineCache(); |
| |
| ClassElement jsInterceptorClass; |
| ClassElement jsStringClass; |
| ClassElement jsArrayClass; |
| ClassElement jsNumberClass; |
| ClassElement jsIntClass; |
| ClassElement jsDoubleClass; |
| ClassElement jsNullClass; |
| ClassElement jsBoolClass; |
| ClassElement jsPlainJavaScriptObjectClass; |
| ClassElement jsUnknownJavaScriptObjectClass; |
| |
| ClassElement jsIndexableClass; |
| ClassElement jsMutableIndexableClass; |
| |
| ClassElement jsMutableArrayClass; |
| ClassElement jsFixedArrayClass; |
| ClassElement jsExtendableArrayClass; |
| |
| Element jsIndexableLength; |
| Element jsArrayRemoveLast; |
| Element jsArrayAdd; |
| Element jsStringSplit; |
| Element jsStringConcat; |
| Element jsStringToString; |
| Element objectEquals; |
| |
| ClassElement typeLiteralClass; |
| ClassElement mapLiteralClass; |
| ClassElement constMapLiteralClass; |
| |
| Element getInterceptorMethod; |
| Element interceptedNames; |
| |
| /** |
| * This element is a top-level variable (in generated output) that the |
| * compiler initializes to a datastructure used to map from a Type to the |
| * interceptor. See declaration of `mapTypeToInterceptor` in |
| * `interceptors.dart`. |
| */ |
| Element mapTypeToInterceptor; |
| |
| HType stringType; |
| HType indexablePrimitiveType; |
| HType readableArrayType; |
| HType mutableArrayType; |
| HType fixedArrayType; |
| HType extendableArrayType; |
| |
| // TODO(9577): Make it so that these are not needed when there are no native |
| // classes. |
| Element dispatchPropertyName; |
| Element getNativeInterceptorMethod; |
| Element defineNativeMethodsFinishMethod; |
| Element getDispatchPropertyMethod; |
| Element setDispatchPropertyMethod; |
| Element initializeDispatchPropertyMethod; |
| bool needToInitializeDispatchProperty = false; |
| |
| bool seenAnyClass = false; |
| |
| final Namer namer; |
| |
| /** |
| * Interface used to determine if an object has the JavaScript |
| * indexing behavior. The interface is only visible to specific |
| * libraries. |
| */ |
| ClassElement jsIndexingBehaviorInterface; |
| |
| /** |
| * A collection of selectors that must have a one shot interceptor |
| * generated. |
| */ |
| final Map<String, Selector> oneShotInterceptors; |
| |
| /** |
| * The members of instantiated interceptor classes: maps a member name to the |
| * list of members that have that name. This map is used by the codegen to |
| * know whether a send must be intercepted or not. |
| */ |
| final Map<SourceString, Set<Element>> interceptedElements; |
| // TODO(sra): Not all methods in the Set always require an interceptor. A |
| // method may be mixed into a true interceptor *and* a plain class. For the |
| // method to work on the interceptor class it needs to use the explicit |
| // receiver. This constrains the call on a known plain receiver to pass the |
| // explicit receiver. https://code.google.com/p/dart/issues/detail?id=8942 |
| |
| /** |
| * A map of specialized versions of the [getInterceptorMethod]. |
| * Since [getInterceptorMethod] is a hot method at runtime, we're |
| * always specializing it based on the incoming type. The keys in |
| * the map are the names of these specialized versions. Note that |
| * the generic version that contains all possible type checks is |
| * also stored in this map. |
| */ |
| final Map<String, Set<ClassElement>> specializedGetInterceptors; |
| |
| /** |
| * Set of classes whose methods are intercepted. |
| */ |
| final Set<ClassElement> _interceptedClasses = new Set<ClassElement>(); |
| |
| /** |
| * Set of classes used as mixins on native classes. Methods on these classes |
| * might also be mixed in to non-native classes. |
| */ |
| final Set<ClassElement> classesMixedIntoNativeClasses = |
| new Set<ClassElement>(); |
| |
| /** |
| * Set of classes whose `operator ==` methods handle `null` themselves. |
| */ |
| final Set<ClassElement> specialOperatorEqClasses = new Set<ClassElement>(); |
| |
| List<CompilerTask> get tasks { |
| return <CompilerTask>[builder, optimizer, generator, emitter]; |
| } |
| |
| final RuntimeTypes rti; |
| |
| /// Holds the method "disableTreeShaking" in js_mirrors when |
| /// dart:mirrors has been loaded. |
| FunctionElement disableTreeShakingMarker; |
| |
| /// Holds the method "preserveNames" in js_mirrors when |
| /// dart:mirrors has been loaded. |
| FunctionElement preserveNamesMarker; |
| |
| /// Holds the method "preserveMetadata" in js_mirrors when |
| /// dart:mirrors has been loaded. |
| FunctionElement preserveMetadataMarker; |
| |
| /// True if a call to preserveMetadataMarker has been seen. This means that |
| /// metadata must be retained for dart:mirrors to work correctly. |
| bool mustRetainMetadata = false; |
| |
| /// True if any metadata has been retained. This is slightly different from |
| /// [mustRetainMetadata] and tells us if any metadata was retained. For |
| /// example, if [mustRetainMetadata] is true but there is no metadata in the |
| /// program, this variable will stil be false. |
| bool hasRetainedMetadata = false; |
| |
| /// True if a call to preserveNames has been seen. |
| bool mustPreserveNames = false; |
| |
| /// True if a call to disableTreeShaking has been seen. |
| bool isTreeShakingDisabled = false; |
| |
| /// True if there isn't sufficient @MirrorsUsed data. |
| bool hasInsufficientMirrorsUsed = false; |
| |
| /// List of instantiated types from metadata. If metadata must be preserved, |
| /// these types must registered. |
| final List<Dependency> metadataInstantiatedTypes = <Dependency>[]; |
| |
| /// List of elements used from metadata. If metadata must be preserved, |
| /// these elements must be compiled. |
| final List<Element> metadataStaticUse = <Element>[]; |
| |
| /// List of tear-off functions referenced from metadata. If metadata must be |
| /// preserved, these elements must be compiled. |
| final List<FunctionElement> metadataGetOfStaticFunction = <FunctionElement>[]; |
| |
| /// List of symbols that the user has requested for reflection. |
| final Set<String> symbolsUsed = new Set<String>(); |
| |
| /// List of elements that the user has requested for reflection. |
| final Set<Element> targetsUsed = new Set<Element>(); |
| |
| /// List of annotations provided by user that indicate that the annotated |
| /// element must be retained. |
| final Set<Element> metaTargetsUsed = new Set<Element>(); |
| |
| /// List of elements that the backend may use. |
| final Set<Element> helpersUsed = new Set<Element>(); |
| |
| JavaScriptBackend(Compiler compiler, bool generateSourceMap, bool disableEval) |
| : namer = determineNamer(compiler), |
| oneShotInterceptors = new Map<String, Selector>(), |
| interceptedElements = new Map<SourceString, Set<Element>>(), |
| rti = new RuntimeTypes(compiler), |
| specializedGetInterceptors = new Map<String, Set<ClassElement>>(), |
| super(compiler, JAVA_SCRIPT_CONSTANT_SYSTEM) { |
| emitter = disableEval |
| ? new CodeEmitterNoEvalTask(compiler, namer, generateSourceMap) |
| : new CodeEmitterTask(compiler, namer, generateSourceMap); |
| builder = new SsaBuilderTask(this); |
| optimizer = new SsaOptimizerTask(this); |
| generator = new SsaCodeGeneratorTask(this); |
| } |
| |
| static Namer determineNamer(Compiler compiler) { |
| return compiler.enableMinification ? |
| new MinifyNamer(compiler) : |
| new Namer(compiler); |
| } |
| |
| bool canBeUsedForGlobalOptimizations(Element element) { |
| if (element.isParameter() |
| || element.isFieldParameter() |
| || element.isField()) { |
| element = element.enclosingElement; |
| } |
| return !helpersUsed.contains(element.declaration); |
| } |
| |
| bool isInterceptorClass(ClassElement element) { |
| if (element == null) return false; |
| if (Elements.isNativeOrExtendsNative(element)) return true; |
| if (interceptedClasses.contains(element)) return true; |
| if (classesMixedIntoNativeClasses.contains(element)) return true; |
| return false; |
| } |
| |
| String registerOneShotInterceptor(Selector selector) { |
| Set<ClassElement> classes = getInterceptedClassesOn(selector.name); |
| String name = namer.getOneShotInterceptorName(selector, classes); |
| if (!oneShotInterceptors.containsKey(name)) { |
| registerSpecializedGetInterceptor(classes); |
| oneShotInterceptors[name] = selector; |
| } |
| return name; |
| } |
| |
| bool isInterceptedMethod(Element element) { |
| return element.isInstanceMember() |
| && !element.isGenerativeConstructorBody() |
| && interceptedElements[element.name] != null; |
| } |
| |
| bool fieldHasInterceptedGetter(Element element) { |
| assert(element.isField()); |
| return interceptedElements[element.name] != null; |
| } |
| |
| bool fieldHasInterceptedSetter(Element element) { |
| assert(element.isField()); |
| return interceptedElements[element.name] != null; |
| } |
| |
| bool isInterceptedName(SourceString name) { |
| return interceptedElements[name] != null; |
| } |
| |
| bool isInterceptedSelector(Selector selector) { |
| return interceptedElements[selector.name] != null; |
| } |
| |
| final Map<SourceString, Set<ClassElement>> interceptedClassesCache = |
| new Map<SourceString, Set<ClassElement>>(); |
| |
| /** |
| * Returns a set of interceptor classes that contain a member named |
| * [name]. Returns [:null:] if there is no class. |
| */ |
| Set<ClassElement> getInterceptedClassesOn(SourceString name) { |
| Set<Element> intercepted = interceptedElements[name]; |
| if (intercepted == null) return null; |
| return interceptedClassesCache.putIfAbsent(name, () { |
| // Populate the cache by running through all the elements and |
| // determine if the given selector applies to them. |
| Set<ClassElement> result = new Set<ClassElement>(); |
| for (Element element in intercepted) { |
| ClassElement classElement = element.getEnclosingClass(); |
| if (Elements.isNativeOrExtendsNative(classElement) |
| || interceptedClasses.contains(classElement)) { |
| result.add(classElement); |
| } |
| if (classesMixedIntoNativeClasses.contains(classElement)) { |
| Set<ClassElement> nativeSubclasses = |
| nativeSubclassesOfMixin(classElement); |
| if (nativeSubclasses != null) result.addAll(nativeSubclasses); |
| } |
| } |
| return result; |
| }); |
| } |
| |
| Set<ClassElement> nativeSubclassesOfMixin(ClassElement mixin) { |
| Set<MixinApplicationElement> uses = compiler.world.mixinUses[mixin]; |
| if (uses == null) return null; |
| Set<ClassElement> result = null; |
| for (MixinApplicationElement use in uses) { |
| Iterable<ClassElement> subclasses = compiler.world.subclassesOf(use); |
| if (subclasses != null) { |
| for (ClassElement subclass in subclasses) { |
| if (Elements.isNativeOrExtendsNative(subclass)) { |
| if (result == null) result = new Set<ClassElement>(); |
| result.add(subclass); |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| bool operatorEqHandlesNullArgument(FunctionElement operatorEqfunction) { |
| return specialOperatorEqClasses.contains( |
| operatorEqfunction.getEnclosingClass()); |
| } |
| |
| void initializeHelperClasses() { |
| getInterceptorMethod = |
| compiler.findInterceptor(const SourceString('getInterceptor')); |
| interceptedNames = |
| compiler.findInterceptor(const SourceString('interceptedNames')); |
| mapTypeToInterceptor = |
| compiler.findInterceptor(const SourceString('mapTypeToInterceptor')); |
| dispatchPropertyName = |
| compiler.findInterceptor(const SourceString('dispatchPropertyName')); |
| getDispatchPropertyMethod = |
| compiler.findInterceptor(const SourceString('getDispatchProperty')); |
| setDispatchPropertyMethod = |
| compiler.findInterceptor(const SourceString('setDispatchProperty')); |
| getNativeInterceptorMethod = |
| compiler.findInterceptor(const SourceString('getNativeInterceptor')); |
| initializeDispatchPropertyMethod = |
| compiler.findInterceptor( |
| new SourceString(emitter.nameOfDispatchPropertyInitializer)); |
| defineNativeMethodsFinishMethod = |
| compiler.findHelper(const SourceString('defineNativeMethodsFinish')); |
| |
| // These methods are overwritten with generated versions. |
| inlineCache.markAsNonInlinable(getInterceptorMethod, insideLoop: true); |
| inlineCache.markAsNonInlinable(getDispatchPropertyMethod, insideLoop: true); |
| inlineCache.markAsNonInlinable(setDispatchPropertyMethod, insideLoop: true); |
| |
| List<ClassElement> classes = [ |
| jsInterceptorClass = |
| compiler.findInterceptor(const SourceString('Interceptor')), |
| jsStringClass = compiler.findInterceptor(const SourceString('JSString')), |
| jsArrayClass = compiler.findInterceptor(const SourceString('JSArray')), |
| // The int class must be before the double class, because the |
| // emitter relies on this list for the order of type checks. |
| jsIntClass = compiler.findInterceptor(const SourceString('JSInt')), |
| jsDoubleClass = compiler.findInterceptor(const SourceString('JSDouble')), |
| jsNumberClass = compiler.findInterceptor(const SourceString('JSNumber')), |
| jsNullClass = compiler.findInterceptor(const SourceString('JSNull')), |
| jsBoolClass = compiler.findInterceptor(const SourceString('JSBool')), |
| jsMutableArrayClass = |
| compiler.findInterceptor(const SourceString('JSMutableArray')), |
| jsFixedArrayClass = |
| compiler.findInterceptor(const SourceString('JSFixedArray')), |
| jsExtendableArrayClass = |
| compiler.findInterceptor(const SourceString('JSExtendableArray')), |
| jsPlainJavaScriptObjectClass = |
| compiler.findInterceptor(const SourceString('PlainJavaScriptObject')), |
| jsUnknownJavaScriptObjectClass = |
| compiler.findInterceptor( |
| const SourceString('UnknownJavaScriptObject')), |
| ]; |
| |
| jsIndexableClass = |
| compiler.findInterceptor(const SourceString('JSIndexable')); |
| jsMutableIndexableClass = |
| compiler.findInterceptor(const SourceString('JSMutableIndexable')); |
| |
| // TODO(kasperl): Some tests do not define the special JSArray |
| // subclasses, so we check to see if they are defined before |
| // trying to resolve them. |
| if (jsFixedArrayClass != null) { |
| jsFixedArrayClass.ensureResolved(compiler); |
| } |
| if (jsExtendableArrayClass != null) { |
| jsExtendableArrayClass.ensureResolved(compiler); |
| } |
| |
| jsIndexableClass.ensureResolved(compiler); |
| jsIndexableLength = compiler.lookupElementIn( |
| jsIndexableClass, const SourceString('length')); |
| if (jsIndexableLength != null && jsIndexableLength.isAbstractField()) { |
| AbstractFieldElement element = jsIndexableLength; |
| jsIndexableLength = element.getter; |
| } |
| |
| jsArrayClass.ensureResolved(compiler); |
| jsArrayRemoveLast = compiler.lookupElementIn( |
| jsArrayClass, const SourceString('removeLast')); |
| jsArrayAdd = compiler.lookupElementIn( |
| jsArrayClass, const SourceString('add')); |
| |
| jsStringClass.ensureResolved(compiler); |
| jsStringSplit = compiler.lookupElementIn( |
| jsStringClass, const SourceString('split')); |
| jsStringConcat = compiler.lookupElementIn( |
| jsStringClass, const SourceString('concat')); |
| jsStringToString = compiler.lookupElementIn( |
| jsStringClass, const SourceString('toString')); |
| |
| typeLiteralClass = compiler.findHelper(const SourceString('TypeImpl')); |
| mapLiteralClass = |
| compiler.coreLibrary.find(const SourceString('LinkedHashMap')); |
| constMapLiteralClass = |
| compiler.findHelper(const SourceString('ConstantMap')); |
| |
| objectEquals = compiler.lookupElementIn( |
| compiler.objectClass, const SourceString('==')); |
| |
| specialOperatorEqClasses |
| ..add(compiler.objectClass) |
| ..add(jsInterceptorClass) |
| ..add(jsNullClass); |
| |
| validateInterceptorImplementsAllObjectMethods(jsInterceptorClass); |
| |
| stringType = new HBoundedType( |
| new TypeMask.nonNullExact(jsStringClass.rawType)); |
| indexablePrimitiveType = new HBoundedType( |
| new TypeMask.nonNullSubtype(jsIndexableClass.rawType)); |
| readableArrayType = new HBoundedType( |
| new TypeMask.nonNullSubclass(jsArrayClass.rawType)); |
| mutableArrayType = new HBoundedType( |
| new TypeMask.nonNullSubclass(jsMutableArrayClass.rawType)); |
| fixedArrayType = new HBoundedType( |
| new TypeMask.nonNullExact(jsFixedArrayClass.rawType)); |
| extendableArrayType = new HBoundedType( |
| new TypeMask.nonNullExact(jsExtendableArrayClass.rawType)); |
| } |
| |
| void validateInterceptorImplementsAllObjectMethods( |
| ClassElement interceptorClass) { |
| if (interceptorClass == null) return; |
| interceptorClass.ensureResolved(compiler); |
| compiler.objectClass.forEachMember((_, Element member) { |
| if (member.isGenerativeConstructor()) return; |
| Element interceptorMember = interceptorClass.lookupMember(member.name); |
| // Interceptors must override all Object methods due to calling convention |
| // differences. |
| assert(interceptorMember.getEnclosingClass() != compiler.objectClass); |
| }); |
| } |
| |
| void addInterceptorsForNativeClassMembers( |
| ClassElement cls, Enqueuer enqueuer) { |
| if (enqueuer.isResolutionQueue) { |
| cls.ensureResolved(compiler); |
| cls.forEachMember((ClassElement classElement, Element member) { |
| if (member.isSynthesized) return; |
| // All methods on [Object] are shadowed by [Interceptor]. |
| if (classElement == compiler.objectClass) return; |
| Set<Element> set = interceptedElements.putIfAbsent( |
| member.name, () => new Set<Element>()); |
| set.add(member); |
| if (classElement == jsInterceptorClass) return; |
| if (classElement.isMixinApplication) { |
| MixinApplicationElement mixinApplication = classElement; |
| assert(member.getEnclosingClass() == mixinApplication.mixin); |
| classesMixedIntoNativeClasses.add(mixinApplication.mixin); |
| } |
| }, |
| includeSuperAndInjectedMembers: true); |
| } |
| } |
| |
| void addInterceptors(ClassElement cls, |
| Enqueuer enqueuer, |
| TreeElements elements) { |
| if (enqueuer.isResolutionQueue) { |
| _interceptedClasses.add(jsInterceptorClass); |
| _interceptedClasses.add(cls); |
| cls.ensureResolved(compiler); |
| cls.forEachMember((ClassElement classElement, Element member) { |
| // All methods on [Object] are shadowed by [Interceptor]. |
| if (classElement == compiler.objectClass) return; |
| Set<Element> set = interceptedElements.putIfAbsent( |
| member.name, () => new Set<Element>()); |
| set.add(member); |
| }, |
| includeSuperAndInjectedMembers: true); |
| } |
| enqueueClass(enqueuer, cls, elements); |
| } |
| |
| Set<ClassElement> get interceptedClasses { |
| assert(compiler.enqueuer.resolution.queueIsClosed); |
| return _interceptedClasses; |
| } |
| |
| void registerSpecializedGetInterceptor(Set<ClassElement> classes) { |
| String name = namer.getInterceptorName(getInterceptorMethod, classes); |
| if (classes.contains(jsInterceptorClass)) { |
| // We can't use a specialized [getInterceptorMethod], so we make |
| // sure we emit the one with all checks. |
| specializedGetInterceptors[name] = interceptedClasses; |
| } else { |
| specializedGetInterceptors[name] = classes; |
| } |
| } |
| |
| void registerInstantiatedClass(ClassElement cls, |
| Enqueuer enqueuer, |
| TreeElements elements) { |
| if (!seenAnyClass) { |
| seenAnyClass = true; |
| if (enqueuer.isResolutionQueue) { |
| // TODO(9577): Make it so that these are not needed when there are no |
| // native classes. |
| enqueue(enqueuer, getNativeInterceptorMethod, elements); |
| enqueue(enqueuer, defineNativeMethodsFinishMethod, elements); |
| enqueue(enqueuer, initializeDispatchPropertyMethod, elements); |
| enqueueClass(enqueuer, jsInterceptorClass, compiler.globalDependencies); |
| } |
| } |
| |
| // Register any helper that will be needed by the backend. |
| if (enqueuer.isResolutionQueue) { |
| if (cls == compiler.intClass |
| || cls == compiler.doubleClass |
| || cls == compiler.numClass) { |
| // The backend will try to optimize number operations and use the |
| // `iae` helper directly. |
| enqueue(enqueuer, |
| compiler.findHelper(const SourceString('iae')), |
| elements); |
| } else if (cls == compiler.listClass |
| || cls == compiler.stringClass) { |
| // The backend will try to optimize array and string access and use the |
| // `ioore` and `iae` helpers directly. |
| enqueue(enqueuer, |
| compiler.findHelper(const SourceString('ioore')), |
| elements); |
| enqueue(enqueuer, |
| compiler.findHelper(const SourceString('iae')), |
| elements); |
| } else if (cls == compiler.functionClass) { |
| enqueueClass(enqueuer, compiler.closureClass, elements); |
| } else if (cls == compiler.mapClass) { |
| // The backend will use a literal list to initialize the entries |
| // of the map. |
| enqueueClass(enqueuer, compiler.listClass, elements); |
| enqueueClass(enqueuer, mapLiteralClass, elements); |
| enqueueInResolution(getMapMaker(), elements); |
| } else if (cls == compiler.boundClosureClass) { |
| // TODO(ngeoffray): Move the bound closure class in the |
| // backend. |
| enqueueClass(enqueuer, compiler.boundClosureClass, elements); |
| } |
| } |
| ClassElement result = null; |
| if (cls == compiler.stringClass || cls == jsStringClass) { |
| addInterceptors(jsStringClass, enqueuer, elements); |
| } else if (cls == compiler.listClass |
| || cls == jsArrayClass |
| || cls == jsFixedArrayClass |
| || cls == jsExtendableArrayClass) { |
| addInterceptors(jsArrayClass, enqueuer, elements); |
| addInterceptors(jsMutableArrayClass, enqueuer, elements); |
| addInterceptors(jsFixedArrayClass, enqueuer, elements); |
| addInterceptors(jsExtendableArrayClass, enqueuer, elements); |
| } else if (cls == compiler.intClass || cls == jsIntClass) { |
| addInterceptors(jsIntClass, enqueuer, elements); |
| addInterceptors(jsNumberClass, enqueuer, elements); |
| } else if (cls == compiler.doubleClass || cls == jsDoubleClass) { |
| addInterceptors(jsDoubleClass, enqueuer, elements); |
| addInterceptors(jsNumberClass, enqueuer, elements); |
| } else if (cls == compiler.boolClass || cls == jsBoolClass) { |
| addInterceptors(jsBoolClass, enqueuer, elements); |
| } else if (cls == compiler.nullClass || cls == jsNullClass) { |
| addInterceptors(jsNullClass, enqueuer, elements); |
| } else if (cls == compiler.numClass || cls == jsNumberClass) { |
| addInterceptors(jsIntClass, enqueuer, elements); |
| addInterceptors(jsDoubleClass, enqueuer, elements); |
| addInterceptors(jsNumberClass, enqueuer, elements); |
| } else if (cls == jsPlainJavaScriptObjectClass) { |
| addInterceptors(jsPlainJavaScriptObjectClass, enqueuer, elements); |
| } else if (cls == jsUnknownJavaScriptObjectClass) { |
| addInterceptors(jsUnknownJavaScriptObjectClass, enqueuer, elements); |
| } else if (Elements.isNativeOrExtendsNative(cls)) { |
| addInterceptorsForNativeClassMembers(cls, enqueuer); |
| } |
| } |
| |
| void registerUseInterceptor(Enqueuer enqueuer) { |
| assert(!enqueuer.isResolutionQueue); |
| if (!enqueuer.nativeEnqueuer.hasInstantiatedNativeClasses()) return; |
| TreeElements elements = compiler.globalDependencies; |
| enqueue(enqueuer, getNativeInterceptorMethod, elements); |
| enqueue(enqueuer, defineNativeMethodsFinishMethod, elements); |
| enqueue(enqueuer, initializeDispatchPropertyMethod, elements); |
| enqueueClass(enqueuer, jsPlainJavaScriptObjectClass, elements); |
| needToInitializeDispatchProperty = true; |
| } |
| |
| JavaScriptItemCompilationContext createItemCompilationContext() { |
| return new JavaScriptItemCompilationContext(); |
| } |
| |
| void enqueueHelpers(ResolutionEnqueuer world, TreeElements elements) { |
| jsIndexingBehaviorInterface = |
| compiler.findHelper(const SourceString('JavaScriptIndexingBehavior')); |
| if (jsIndexingBehaviorInterface != null) { |
| world.registerIsCheck(jsIndexingBehaviorInterface.computeType(compiler), |
| elements); |
| enqueue( |
| world, |
| compiler.findHelper(const SourceString('isJsIndexable')), |
| elements); |
| enqueue( |
| world, |
| compiler.findInterceptor(const SourceString('dispatchPropertyName')), |
| elements); |
| } |
| |
| if (compiler.enableTypeAssertions) { |
| // Unconditionally register the helper that checks if the |
| // expression in an if/while/for is a boolean. |
| // TODO(ngeoffray): Should we have the resolver register those instead? |
| Element e = |
| compiler.findHelper(const SourceString('boolConversionCheck')); |
| if (e != null) enqueue(world, e, elements); |
| } |
| } |
| |
| onResolutionComplete() => rti.computeClassesNeedingRti(); |
| |
| void registerStringInterpolation(TreeElements elements) { |
| enqueueInResolution(getStringInterpolationHelper(), elements); |
| } |
| |
| void registerCatchStatement(Enqueuer enqueuer, TreeElements elements) { |
| void ensure(ClassElement classElement) { |
| if (classElement != null) { |
| enqueueClass(enqueuer, classElement, elements); |
| } |
| } |
| enqueueInResolution(getExceptionUnwrapper(), elements); |
| ensure(jsPlainJavaScriptObjectClass); |
| ensure(jsUnknownJavaScriptObjectClass); |
| } |
| |
| void registerThrowExpression(TreeElements elements) { |
| // We don't know ahead of time whether we will need the throw in a |
| // statement context or an expression context, so we register both |
| // here, even though we may not need the throwExpression helper. |
| enqueueInResolution(getWrapExceptionHelper(), elements); |
| enqueueInResolution(getThrowExpressionHelper(), elements); |
| } |
| |
| void registerLazyField(TreeElements elements) { |
| enqueueInResolution(getCyclicThrowHelper(), elements); |
| } |
| |
| void registerTypeLiteral(Element element, TreeElements elements) { |
| enqueueInResolution(getCreateRuntimeType(), elements); |
| // TODO(ahe): Might want to register [element] as an instantiated class |
| // when reflection is used. However, as long as we disable tree-shaking |
| // eagerly it doesn't matter. |
| } |
| |
| void registerStackTraceInCatch(TreeElements elements) { |
| enqueueInResolution(getTraceFromException(), elements); |
| } |
| |
| void registerSetRuntimeType(TreeElements elements) { |
| enqueueInResolution(getSetRuntimeTypeInfo(), elements); |
| } |
| |
| void registerGetRuntimeTypeArgument(TreeElements elements) { |
| enqueueInResolution(getGetRuntimeTypeArgument(), elements); |
| } |
| |
| void registerGenericCallMethod(Element callMethod, |
| Enqueuer enqueuer, TreeElements elements) { |
| if (enqueuer.isResolutionQueue || methodNeedsRti(callMethod)) { |
| registerComputeSignature(enqueuer, elements); |
| } |
| } |
| |
| void registerGenericClosure(Element closure, |
| Enqueuer enqueuer, TreeElements elements) { |
| if (enqueuer.isResolutionQueue || methodNeedsRti(closure)) { |
| registerComputeSignature(enqueuer, elements); |
| } |
| } |
| |
| void registerComputeSignature(Enqueuer enqueuer, TreeElements elements) { |
| // Calls to [:computeSignature:] are generated by the emitter and we |
| // therefore need to enqueue the used elements in the codegen enqueuer as |
| // well as in the resolution enqueuer. |
| enqueue(enqueuer, getSetRuntimeTypeInfo(), elements); |
| enqueue(enqueuer, getGetRuntimeTypeInfo(), elements); |
| enqueue(enqueuer, getComputeSignature(), elements); |
| enqueue(enqueuer, getGetRuntimeTypeArguments(), elements); |
| enqueueClass(enqueuer, compiler.listClass, elements); |
| } |
| |
| void registerRuntimeType(Enqueuer enqueuer, TreeElements elements) { |
| registerComputeSignature(enqueuer, elements); |
| enqueueInResolution(getSetRuntimeTypeInfo(), elements); |
| enqueueInResolution(getGetRuntimeTypeInfo(), elements); |
| registerGetRuntimeTypeArgument(elements); |
| enqueueClass(enqueuer, compiler.listClass, elements); |
| } |
| |
| void registerTypeVariableExpression(TreeElements elements) { |
| enqueueInResolution(getSetRuntimeTypeInfo(), elements); |
| enqueueInResolution(getGetRuntimeTypeInfo(), elements); |
| registerGetRuntimeTypeArgument(elements); |
| enqueueClass(compiler.enqueuer.resolution, compiler.listClass, elements); |
| enqueueInResolution(getRuntimeTypeToString(), elements); |
| enqueueInResolution(getCreateRuntimeType(), elements); |
| } |
| |
| void registerIsCheck(DartType type, Enqueuer world, TreeElements elements) { |
| type = type.unalias(compiler); |
| enqueueClass(world, compiler.boolClass, elements); |
| bool inCheckedMode = compiler.enableTypeAssertions; |
| // [registerIsCheck] is also called for checked mode checks, so we |
| // need to register checked mode helpers. |
| if (inCheckedMode) { |
| CheckedModeHelper helper = getCheckedModeHelper(type, typeCast: false); |
| if (helper != null) enqueue(world, helper.getElement(compiler), elements); |
| // We also need the native variant of the check (for DOM types). |
| helper = getNativeCheckedModeHelper(type, typeCast: false); |
| if (helper != null) enqueue(world, helper.getElement(compiler), elements); |
| } |
| bool isTypeVariable = type.kind == TypeKind.TYPE_VARIABLE; |
| if (!type.isRaw || type.containsTypeVariables) { |
| enqueueInResolution(getSetRuntimeTypeInfo(), elements); |
| enqueueInResolution(getGetRuntimeTypeInfo(), elements); |
| enqueueInResolution(getGetRuntimeTypeArgument(), elements); |
| if (inCheckedMode) { |
| enqueueInResolution(getAssertSubtype(), elements); |
| } |
| enqueueInResolution(getCheckSubtype(), elements); |
| if (isTypeVariable) { |
| enqueueInResolution(getCheckSubtypeOfRuntimeType(), elements); |
| if (inCheckedMode) { |
| enqueueInResolution(getAssertSubtypeOfRuntimeType(), elements); |
| } |
| } |
| enqueueClass(world, compiler.listClass, elements); |
| } |
| if (type is FunctionType) { |
| enqueueInResolution(getCheckFunctionSubtype(), elements); |
| } |
| if (type.element.isNative()) { |
| // We will neeed to add the "$is" and "$as" properties on the |
| // JavaScript object prototype, so we make sure |
| // [:defineProperty:] is compiled. |
| enqueue(world, |
| compiler.findHelper(const SourceString('defineProperty')), |
| elements); |
| } |
| } |
| |
| void registerAsCheck(DartType type, TreeElements elements) { |
| type = type.unalias(compiler); |
| CheckedModeHelper helper = getCheckedModeHelper(type, typeCast: true); |
| enqueueInResolution(helper.getElement(compiler), elements); |
| // We also need the native variant of the check (for DOM types). |
| helper = getNativeCheckedModeHelper(type, typeCast: true); |
| if (helper != null) { |
| enqueueInResolution(helper.getElement(compiler), elements); |
| } |
| } |
| |
| void registerThrowNoSuchMethod(TreeElements elements) { |
| enqueueInResolution(getThrowNoSuchMethod(), elements); |
| // Also register the types of the arguments passed to this method. |
| enqueueClass(compiler.enqueuer.resolution, compiler.listClass, elements); |
| enqueueClass(compiler.enqueuer.resolution, compiler.stringClass, elements); |
| } |
| |
| void registerThrowRuntimeError(TreeElements elements) { |
| enqueueInResolution(getThrowRuntimeError(), elements); |
| // Also register the types of the arguments passed to this method. |
| enqueueClass(compiler.enqueuer.resolution, compiler.stringClass, elements); |
| } |
| |
| void registerAbstractClassInstantiation(TreeElements elements) { |
| enqueueInResolution(getThrowAbstractClassInstantiationError(), elements); |
| // Also register the types of the arguments passed to this method. |
| enqueueClass(compiler.enqueuer.resolution, compiler.stringClass, elements); |
| } |
| |
| void registerFallThroughError(TreeElements elements) { |
| enqueueInResolution(getFallThroughError(), elements); |
| } |
| |
| void registerSuperNoSuchMethod(TreeElements elements) { |
| enqueueInResolution(getCreateInvocationMirror(), elements); |
| enqueueInResolution( |
| compiler.objectClass.lookupLocalMember(Compiler.NO_SUCH_METHOD), |
| elements); |
| enqueueClass(compiler.enqueuer.resolution, compiler.listClass, elements); |
| } |
| |
| void registerRequiredType(DartType type, Element enclosingElement) { |
| /** |
| * If [argument] has type variables or is a type variable, this |
| * method registers a RTI dependency between the class where the |
| * type variable is defined (that is the enclosing class of the |
| * current element being resolved) and the class of [annotation]. |
| * If the class of [annotation] requires RTI, then the class of |
| * the type variable does too. |
| */ |
| void analyzeTypeArgument(DartType annotation, DartType argument) { |
| if (argument == null) return; |
| if (argument.element.isTypeVariable()) { |
| ClassElement enclosing = argument.element.getEnclosingClass(); |
| assert(enclosing == enclosingElement.getEnclosingClass().declaration); |
| rti.registerRtiDependency(annotation.element, enclosing); |
| } else if (argument is InterfaceType) { |
| InterfaceType type = argument; |
| type.typeArguments.forEach((DartType argument) { |
| analyzeTypeArgument(annotation, argument); |
| }); |
| } |
| } |
| |
| if (type is InterfaceType) { |
| InterfaceType itf = type; |
| itf.typeArguments.forEach((DartType argument) { |
| analyzeTypeArgument(type, argument); |
| }); |
| } |
| // TODO(ngeoffray): Also handle T a (in checked mode). |
| } |
| |
| void registerClassUsingVariableExpression(ClassElement cls) { |
| rti.classesUsingTypeVariableExpression.add(cls); |
| } |
| |
| bool classNeedsRti(ClassElement cls) { |
| return rti.classesNeedingRti.contains(cls.declaration) || |
| compiler.enabledRuntimeType; |
| } |
| |
| bool isDefaultNoSuchMethodImplementation(Element element) { |
| assert(element.name == Compiler.NO_SUCH_METHOD); |
| ClassElement classElement = element.getEnclosingClass(); |
| return classElement == compiler.objectClass |
| || classElement == jsInterceptorClass; |
| } |
| |
| bool isDefaultEqualityImplementation(Element element) { |
| assert(element.name == const SourceString('==')); |
| ClassElement classElement = element.getEnclosingClass(); |
| return classElement == compiler.objectClass |
| || classElement == jsInterceptorClass |
| || classElement == jsNullClass; |
| } |
| |
| bool methodNeedsRti(FunctionElement function) { |
| return rti.methodsNeedingRti.contains(function) || |
| compiler.enabledRuntimeType; |
| } |
| |
| // Enqueue [e] in [enqueuer]. |
| // |
| // The backend must *always* call this method when enqueuing an |
| // element. Calls done by the backend are not seen by global |
| // optimizations, so they would make these optimizations unsound. |
| // Therefore we need to collect the list of helpers the backend may |
| // use. |
| void enqueue(Enqueuer enqueuer, Element e, TreeElements elements) { |
| if (e == null) return; |
| helpersUsed.add(e.declaration); |
| enqueuer.addToWorkList(e); |
| elements.registerDependency(e); |
| } |
| |
| void enqueueInResolution(Element e, TreeElements elements) { |
| if (e == null) return; |
| ResolutionEnqueuer enqueuer = compiler.enqueuer.resolution; |
| enqueue(enqueuer, e, elements); |
| } |
| |
| void enqueueClass(Enqueuer enqueuer, Element cls, TreeElements elements) { |
| if (cls == null) return; |
| helpersUsed.add(cls.declaration); |
| // Both declaration and implementation may declare fields, so we |
| // add both to the list of helpers. |
| if (cls.declaration != cls.implementation) { |
| helpersUsed.add(cls.implementation); |
| } |
| enqueuer.registerInstantiatedClass(cls, elements); |
| } |
| |
| void registerConstantMap(TreeElements elements) { |
| Element e = compiler.findHelper(const SourceString('ConstantMap')); |
| if (e != null) { |
| enqueueClass(compiler.enqueuer.resolution, e, elements); |
| } |
| e = compiler.findHelper(const SourceString('ConstantProtoMap')); |
| if (e != null) { |
| enqueueClass(compiler.enqueuer.resolution, e, elements); |
| } |
| } |
| |
| void codegen(CodegenWorkItem work) { |
| Element element = work.element; |
| var kind = element.kind; |
| if (kind == ElementKind.TYPEDEF) return; |
| if (element.isConstructor() && element.getEnclosingClass() == jsNullClass) { |
| // Work around a problem compiling JSNull's constructor. |
| return; |
| } |
| if (kind.category == ElementCategory.VARIABLE) { |
| Constant initialValue = compiler.constantHandler.compileWorkItem(work); |
| if (initialValue != null) { |
| return; |
| } else { |
| // If the constant-handler was not able to produce a result we have to |
| // go through the builder (below) to generate the lazy initializer for |
| // the static variable. |
| // We also need to register the use of the cyclic-error helper. |
| compiler.enqueuer.codegen.registerStaticUse(getCyclicThrowHelper()); |
| } |
| } |
| |
| HGraph graph = builder.build(work); |
| optimizer.optimize(work, graph, false); |
| if (work.allowSpeculativeOptimization |
| && optimizer.trySpeculativeOptimizations(work, graph)) { |
| jsAst.Expression code = generator.generateBailoutMethod(work, graph); |
| generatedBailoutCode[element] = code; |
| optimizer.prepareForSpeculativeOptimizations(work, graph); |
| optimizer.optimize(work, graph, true); |
| } |
| jsAst.Expression code = generator.generateCode(work, graph); |
| generatedCode[element] = code; |
| } |
| |
| native.NativeEnqueuer nativeResolutionEnqueuer(Enqueuer world) { |
| return new native.NativeResolutionEnqueuer(world, compiler); |
| } |
| |
| native.NativeEnqueuer nativeCodegenEnqueuer(Enqueuer world) { |
| return new native.NativeCodegenEnqueuer(world, compiler, emitter); |
| } |
| |
| ClassElement defaultSuperclass(ClassElement element) { |
| // Native classes inherit from Interceptor. |
| return element.isNative() ? jsInterceptorClass : compiler.objectClass; |
| } |
| |
| /** |
| * Unit test hook that returns code of an element as a String. |
| * |
| * Invariant: [element] must be a declaration element. |
| */ |
| String assembleCode(Element element) { |
| assert(invariant(element, element.isDeclaration)); |
| return jsAst.prettyPrint(generatedCode[element], compiler).getText(); |
| } |
| |
| void assembleProgram() { |
| emitter.assembleProgram(); |
| } |
| |
| Element getImplementationClass(Element element) { |
| if (element == compiler.intClass) { |
| return jsIntClass; |
| } else if (element == compiler.boolClass) { |
| return jsBoolClass; |
| } else if (element == compiler.numClass) { |
| return jsNumberClass; |
| } else if (element == compiler.doubleClass) { |
| return jsDoubleClass; |
| } else if (element == compiler.stringClass) { |
| return jsStringClass; |
| } else if (element == compiler.listClass) { |
| return jsArrayClass; |
| } else { |
| return element; |
| } |
| } |
| |
| /** |
| * Returns the checked mode helper that will be needed to do a type check/type |
| * cast on [type] at runtime. Note that this method is being called both by |
| * the resolver with interface types (int, String, ...), and by the SSA |
| * backend with implementation types (JSInt, JSString, ...). |
| */ |
| CheckedModeHelper getCheckedModeHelper(DartType type, {bool typeCast}) { |
| return getCheckedModeHelperInternal( |
| type, typeCast: typeCast, nativeCheckOnly: false); |
| } |
| |
| /** |
| * Returns the native checked mode helper that will be needed to do a type |
| * check/type cast on [type] at runtime. If no native helper exists for |
| * [type], [:null:] is returned. |
| */ |
| CheckedModeHelper getNativeCheckedModeHelper(DartType type, {bool typeCast}) { |
| return getCheckedModeHelperInternal( |
| type, typeCast: typeCast, nativeCheckOnly: true); |
| } |
| |
| /** |
| * Returns the checked mode helper for the type check/type cast for [type]. If |
| * [nativeCheckOnly] is [:true:], only names for native helpers are returned. |
| */ |
| CheckedModeHelper getCheckedModeHelperInternal(DartType type, |
| {bool typeCast, |
| bool nativeCheckOnly}) { |
| assert(type.kind != TypeKind.TYPEDEF); |
| Element element = type.element; |
| bool nativeCheck = nativeCheckOnly || |
| emitter.nativeEmitter.requiresNativeIsCheck(element); |
| if (type == compiler.types.voidType) { |
| assert(!typeCast); // Cannot cast to void. |
| if (nativeCheckOnly) return null; |
| return const CheckedModeHelper(const SourceString('voidTypeCheck')); |
| } else if (element == jsStringClass || element == compiler.stringClass) { |
| if (nativeCheckOnly) return null; |
| return typeCast |
| ? const CheckedModeHelper(const SourceString("stringTypeCast")) |
| : const CheckedModeHelper(const SourceString('stringTypeCheck')); |
| } else if (element == jsDoubleClass || element == compiler.doubleClass) { |
| if (nativeCheckOnly) return null; |
| return typeCast |
| ? const CheckedModeHelper(const SourceString("doubleTypeCast")) |
| : const CheckedModeHelper(const SourceString('doubleTypeCheck')); |
| } else if (element == jsNumberClass || element == compiler.numClass) { |
| if (nativeCheckOnly) return null; |
| return typeCast |
| ? const CheckedModeHelper(const SourceString("numTypeCast")) |
| : const CheckedModeHelper(const SourceString('numTypeCheck')); |
| } else if (element == jsBoolClass || element == compiler.boolClass) { |
| if (nativeCheckOnly) return null; |
| return typeCast |
| ? const CheckedModeHelper(const SourceString("boolTypeCast")) |
| : const CheckedModeHelper(const SourceString('boolTypeCheck')); |
| } else if (element == jsIntClass || element == compiler.intClass) { |
| if (nativeCheckOnly) return null; |
| return typeCast |
| ? const CheckedModeHelper(const SourceString("intTypeCast")) |
| : const CheckedModeHelper(const SourceString('intTypeCheck')); |
| } else if (Elements.isNumberOrStringSupertype(element, compiler)) { |
| if (nativeCheck) { |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString("numberOrStringSuperNativeTypeCast")) |
| : const PropertyCheckedModeHelper( |
| const SourceString('numberOrStringSuperNativeTypeCheck')); |
| } else { |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString("numberOrStringSuperTypeCast")) |
| : const PropertyCheckedModeHelper( |
| const SourceString('numberOrStringSuperTypeCheck')); |
| } |
| } else if (Elements.isStringOnlySupertype(element, compiler)) { |
| if (nativeCheck) { |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString("stringSuperNativeTypeCast")) |
| : const PropertyCheckedModeHelper( |
| const SourceString('stringSuperNativeTypeCheck')); |
| } else { |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString("stringSuperTypeCast")) |
| : const PropertyCheckedModeHelper( |
| const SourceString('stringSuperTypeCheck')); |
| } |
| } else if ((element == compiler.listClass || element == jsArrayClass) && |
| type.isRaw) { |
| if (nativeCheckOnly) return null; |
| return typeCast |
| ? const CheckedModeHelper(const SourceString("listTypeCast")) |
| : const CheckedModeHelper(const SourceString('listTypeCheck')); |
| } else { |
| if (Elements.isListSupertype(element, compiler)) { |
| if (nativeCheck) { |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString("listSuperNativeTypeCast")) |
| : const PropertyCheckedModeHelper( |
| const SourceString('listSuperNativeTypeCheck')); |
| } else { |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString("listSuperTypeCast")) |
| : const PropertyCheckedModeHelper( |
| const SourceString('listSuperTypeCheck')); |
| } |
| } else { |
| if (nativeCheck) { |
| // TODO(karlklose): can we get rid of this branch when we use |
| // interceptors? |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString("interceptedTypeCast")) |
| : const PropertyCheckedModeHelper( |
| const SourceString('interceptedTypeCheck')); |
| } else { |
| if (type.kind == TypeKind.INTERFACE && !type.isRaw) { |
| return typeCast |
| ? const SubtypeCheckedModeHelper( |
| const SourceString('subtypeCast')) |
| : const SubtypeCheckedModeHelper( |
| const SourceString('assertSubtype')); |
| } else if (type.kind == TypeKind.TYPE_VARIABLE) { |
| return typeCast |
| ? const TypeVariableCheckedModeHelper( |
| const SourceString('subtypeOfRuntimeTypeCast')) |
| : const TypeVariableCheckedModeHelper( |
| const SourceString('assertSubtypeOfRuntimeType')); |
| } else if (type.kind == TypeKind.FUNCTION) { |
| return typeCast |
| ? const FunctionTypeCheckedModeHelper( |
| const SourceString('functionSubtypeCast')) |
| : const FunctionTypeCheckedModeHelper( |
| const SourceString('assertFunctionSubtype')); |
| } else { |
| return typeCast |
| ? const PropertyCheckedModeHelper( |
| const SourceString('propertyTypeCast')) |
| : const PropertyCheckedModeHelper( |
| const SourceString('propertyTypeCheck')); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Returns [:true:] if the checking of [type] is performed directly on the |
| * object and not on an interceptor. |
| */ |
| bool hasDirectCheckFor(DartType type) { |
| Element element = type.element; |
| return element == compiler.stringClass || |
| element == compiler.boolClass || |
| element == compiler.numClass || |
| element == compiler.intClass || |
| element == compiler.doubleClass || |
| element == jsArrayClass || |
| element == jsMutableArrayClass || |
| element == jsExtendableArrayClass || |
| element == jsFixedArrayClass; |
| } |
| |
| Element getExceptionUnwrapper() { |
| return compiler.findHelper(const SourceString('unwrapException')); |
| } |
| |
| Element getThrowRuntimeError() { |
| return compiler.findHelper(const SourceString('throwRuntimeError')); |
| } |
| |
| Element getThrowAbstractClassInstantiationError() { |
| return compiler.findHelper( |
| const SourceString('throwAbstractClassInstantiationError')); |
| } |
| |
| Element getStringInterpolationHelper() { |
| return compiler.findHelper(const SourceString('S')); |
| } |
| |
| Element getWrapExceptionHelper() { |
| return compiler.findHelper(const SourceString(r'wrapException')); |
| } |
| |
| Element getThrowExpressionHelper() { |
| return compiler.findHelper(const SourceString('throwExpression')); |
| } |
| |
| Element getClosureConverter() { |
| return compiler.findHelper(const SourceString('convertDartClosureToJS')); |
| } |
| |
| Element getTraceFromException() { |
| return compiler.findHelper(const SourceString('getTraceFromException')); |
| } |
| |
| Element getMapMaker() { |
| return compiler.findHelper(const SourceString('makeLiteralMap')); |
| } |
| |
| Element getSetRuntimeTypeInfo() { |
| return compiler.findHelper(const SourceString('setRuntimeTypeInfo')); |
| } |
| |
| Element getGetRuntimeTypeInfo() { |
| return compiler.findHelper(const SourceString('getRuntimeTypeInfo')); |
| } |
| |
| Element getComputeSignature() { |
| return compiler.findHelper(const SourceString('computeSignature')); |
| } |
| |
| Element getGetRuntimeTypeArguments() { |
| return compiler.findHelper(const SourceString('getRuntimeTypeArguments')); |
| } |
| |
| Element getGetRuntimeTypeArgument() { |
| return compiler.findHelper(const SourceString('getRuntimeTypeArgument')); |
| } |
| |
| Element getRuntimeTypeToString() { |
| return compiler.findHelper(const SourceString('runtimeTypeToString')); |
| } |
| |
| Element getCheckSubtype() { |
| return compiler.findHelper(const SourceString('checkSubtype')); |
| } |
| |
| Element getAssertSubtype() { |
| return compiler.findHelper(const SourceString('assertSubtype')); |
| } |
| |
| Element getCheckSubtypeOfRuntimeType() { |
| return compiler.findHelper(const SourceString('checkSubtypeOfRuntimeType')); |
| } |
| |
| Element getAssertSubtypeOfRuntimeType() { |
| return compiler.findHelper( |
| const SourceString('assertSubtypeOfRuntimeType')); |
| } |
| |
| Element getCheckFunctionSubtype() { |
| return compiler.findHelper(const SourceString('checkFunctionSubtype')); |
| } |
| |
| Element getThrowNoSuchMethod() { |
| return compiler.findHelper(const SourceString('throwNoSuchMethod')); |
| } |
| |
| Element getCreateRuntimeType() { |
| return compiler.findHelper(const SourceString('createRuntimeType')); |
| } |
| |
| Element getFallThroughError() { |
| return compiler.findHelper(const SourceString("getFallThroughError")); |
| } |
| |
| Element getCreateInvocationMirror() { |
| return compiler.findHelper(Compiler.CREATE_INVOCATION_MIRROR); |
| } |
| |
| Element getCyclicThrowHelper() { |
| return compiler.findHelper(const SourceString("throwCyclicInit")); |
| } |
| |
| bool isNullImplementation(ClassElement cls) { |
| return cls == jsNullClass; |
| } |
| |
| ClassElement get intImplementation => jsIntClass; |
| ClassElement get doubleImplementation => jsDoubleClass; |
| ClassElement get numImplementation => jsNumberClass; |
| ClassElement get stringImplementation => jsStringClass; |
| ClassElement get listImplementation => jsArrayClass; |
| ClassElement get constListImplementation => jsArrayClass; |
| ClassElement get fixedListImplementation => jsFixedArrayClass; |
| ClassElement get growableListImplementation => jsExtendableArrayClass; |
| ClassElement get mapImplementation => mapLiteralClass; |
| ClassElement get constMapImplementation => constMapLiteralClass; |
| ClassElement get typeImplementation => typeLiteralClass; |
| ClassElement get boolImplementation => jsBoolClass; |
| ClassElement get nullImplementation => jsNullClass; |
| |
| void registerStaticUse(Element element, Enqueuer enqueuer) { |
| if (element == disableTreeShakingMarker) { |
| compiler.disableTypeInferenceForMirrors = true; |
| isTreeShakingDisabled = true; |
| enqueuer.enqueueEverything(); |
| } else if (element == preserveNamesMarker) { |
| if (mustPreserveNames) return; |
| mustPreserveNames = true; |
| compiler.log('Preserving names.'); |
| } else if (element == preserveMetadataMarker) { |
| if (mustRetainMetadata) return; |
| compiler.log('Retaining metadata.'); |
| mustRetainMetadata = true; |
| for (LibraryElement library in compiler.libraries.values) { |
| if (retainMetadataOf(library)) { |
| for (Link link = library.metadata; !link.isEmpty; link = link.tail) { |
| link.head.ensureResolved(compiler); |
| } |
| } |
| } |
| for (Dependency dependency in metadataInstantiatedTypes) { |
| registerMetadataInstantiatedType(dependency.type, dependency.user); |
| } |
| metadataInstantiatedTypes.clear(); |
| for (Element e in metadataStaticUse) { |
| registerMetadataStaticUse(e); |
| } |
| metadataStaticUse.clear(); |
| for (Element e in metadataGetOfStaticFunction) { |
| registerMetadataGetOfStaticFunction(e); |
| } |
| metadataGetOfStaticFunction.clear(); |
| } |
| } |
| |
| /// Called when [:const Symbol(name):] is seen. |
| void registerConstSymbol(String name, TreeElements elements) { |
| symbolsUsed.add(name); |
| } |
| |
| /// Called when [:new Symbol(...):] is seen. |
| void registerNewSymbol(TreeElements elements) { |
| } |
| |
| /// Should [element] (a getter) be retained for reflection? |
| bool shouldRetainGetter(Element element) => isNeededForReflection(element); |
| |
| /// Should [element] (a setter) be retained for reflection? |
| bool shouldRetainSetter(Element element) => isNeededForReflection(element); |
| |
| /// Should [name] be retained for reflection? |
| bool shouldRetainName(SourceString name) { |
| if (hasInsufficientMirrorsUsed) return mustPreserveNames; |
| if (name == const SourceString('')) return false; |
| return symbolsUsed.contains(name.slowToString()); |
| } |
| |
| bool get rememberLazies => isTreeShakingDisabled; |
| |
| bool retainMetadataOf(Element element) { |
| if (mustRetainMetadata) hasRetainedMetadata = true; |
| if (mustRetainMetadata && isNeededForReflection(element)) { |
| for (MetadataAnnotation metadata in element.metadata) { |
| metadata.value.accept(new ConstantCopier(compiler.constantHandler)); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| void onLibraryLoaded(LibraryElement library, Uri uri) { |
| if (uri == Uri.parse('dart:_js_mirrors')) { |
| disableTreeShakingMarker = |
| library.find(const SourceString('disableTreeShaking')); |
| preserveMetadataMarker = |
| library.find(const SourceString('preserveMetadata')); |
| } else if (uri == Uri.parse('dart:_js_names')) { |
| preserveNamesMarker = |
| library.find(const SourceString('preserveNames')); |
| } |
| } |
| |
| void registerMetadataInstantiatedType(DartType type, TreeElements elements) { |
| if (mustRetainMetadata) { |
| compiler.constantHandler.registerInstantiatedType(type, elements); |
| } else { |
| metadataInstantiatedTypes.add(new Dependency(type, elements)); |
| } |
| } |
| |
| void registerMetadataStaticUse(Element element) { |
| if (mustRetainMetadata) { |
| compiler.constantHandler.registerStaticUse(element); |
| } else { |
| metadataStaticUse.add(element); |
| } |
| } |
| |
| void registerMetadataGetOfStaticFunction(FunctionElement element) { |
| if (mustRetainMetadata) { |
| compiler.constantHandler.registerGetOfStaticFunction(element); |
| } else { |
| metadataGetOfStaticFunction.add(element); |
| } |
| } |
| |
| void registerMirrorUsage(Set<String> symbols, |
| Set<Element> targets, |
| Set<Element> metaTargets) { |
| if (symbols == null && targets == null && metaTargets == null) { |
| // The user didn't specify anything, or there are imports of |
| // 'dart:mirrors' without @MirrorsUsed. |
| hasInsufficientMirrorsUsed = true; |
| return; |
| } |
| if (symbols != null) symbolsUsed.addAll(symbols); |
| if (targets != null) { |
| for (Element target in targets) { |
| if (target.isAbstractField()) { |
| AbstractFieldElement field = target; |
| targetsUsed.add(field.getter); |
| targetsUsed.add(field.setter); |
| } else { |
| targetsUsed.add(target); |
| } |
| } |
| } |
| if (metaTargets != null) metaTargetsUsed.addAll(metaTargets); |
| } |
| |
| bool isNeededForReflection(Element element) { |
| if (hasInsufficientMirrorsUsed) return isTreeShakingDisabled; |
| /// Record the name of [element] in [symbolsUsed]. Return true for |
| /// convenience. |
| bool registerNameOf(Element element) { |
| symbolsUsed.add(element.name.slowToString()); |
| if (element.isConstructor()) { |
| symbolsUsed.add(element.getEnclosingClass().name.slowToString()); |
| } |
| return true; |
| } |
| |
| if (!metaTargetsUsed.isEmpty) { |
| // TODO(ahe): Implement this. |
| return registerNameOf(element); |
| } |
| |
| if (!targetsUsed.isEmpty) { |
| if (targetsUsed.contains(element)) return registerNameOf(element); |
| Element enclosing = element.enclosingElement; |
| if (enclosing != null && isNeededForReflection(enclosing)) { |
| return registerNameOf(element); |
| } |
| } |
| |
| if (element is ClosureClassElement) { |
| // TODO(ahe): Try to fix the enclosing element of ClosureClassElement |
| // instead. |
| ClosureClassElement closureClass = element; |
| if (isNeededForReflection(closureClass.methodElement)) { |
| return registerNameOf(element); |
| } |
| } |
| |
| return false; |
| } |
| } |
| |
| /// Records that [type] is used by [user.element]. |
| class Dependency { |
| final DartType type; |
| final TreeElements user; |
| |
| const Dependency(this.type, this.user); |
| } |
| |
| /// Used to copy metadata to the the actual constant handler. |
| class ConstantCopier implements ConstantVisitor { |
| final ConstantHandler target; |
| |
| ConstantCopier(this.target); |
| |
| void copy(/* Constant or List<Constant> */ value) { |
| if (value is Constant) { |
| target.compiledConstants.add(value); |
| } else { |
| target.compiledConstants.addAll(value); |
| } |
| } |
| |
| void visitFunction(FunctionConstant constant) => copy(constant); |
| |
| void visitNull(NullConstant constant) => copy(constant); |
| |
| void visitInt(IntConstant constant) => copy(constant); |
| |
| void visitDouble(DoubleConstant constant) => copy(constant); |
| |
| void visitTrue(TrueConstant constant) => copy(constant); |
| |
| void visitFalse(FalseConstant constant) => copy(constant); |
| |
| void visitString(StringConstant constant) => copy(constant); |
| |
| void visitType(TypeConstant constant) => copy(constant); |
| |
| void visitInterceptor(InterceptorConstant constant) => copy(constant); |
| |
| void visitList(ListConstant constant) { |
| copy(constant.entries); |
| copy(constant); |
| } |
| void visitMap(MapConstant constant) { |
| copy(constant.keys); |
| copy(constant.values); |
| copy(constant.protoValue); |
| copy(constant); |
| } |
| |
| void visitConstructed(ConstructedConstant constant) { |
| copy(constant.fields); |
| copy(constant); |
| } |
| } |
