| // 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 dart2js; |
| |
| typedef ItemCompilationContext ItemCompilationContextCreator(); |
| |
| class EnqueueTask extends CompilerTask { |
| final ResolutionEnqueuer resolution; |
| final CodegenEnqueuer codegen; |
| |
| /// A reverse map from name to *all* elements with that name, not |
| /// just instance members of instantiated classes. |
| final Map<String, Link<Element>> allElementsByName |
| = new Map<String, Link<Element>>(); |
| |
| void ensureAllElementsByName() { |
| if (!allElementsByName.isEmpty) return; |
| |
| void addMemberByName(Element element) { |
| element = element.declaration; |
| String name = element.name; |
| ScopeContainerElement container = null; |
| if (element.isLibrary()) { |
| LibraryElement library = element; |
| // Don't include private implementation libraries. These |
| // libraries contain special classes that cause problems |
| // in other parts of the resolver (in particular Null and Void). |
| // TODO(ahe): Consider lifting this restriction. |
| if (!library.isInternalLibrary) { |
| container = library; |
| // TODO(ahe): Is this right? Is this necessary? |
| name = library.getLibraryOrScriptName(); |
| } |
| } else if (element.isClass()) { |
| ClassElement cls = element; |
| cls.ensureResolved(compiler); |
| container = cls; |
| for (var link = cls.computeTypeParameters(compiler); |
| !link.isEmpty; |
| link = link.tail) { |
| addMemberByName(link.head.element); |
| } |
| } |
| allElementsByName[name] = allElementsByName.putIfAbsent( |
| name, () => const Link<Element>()).prepend(element); |
| if (container != null) { |
| container.forEachLocalMember(addMemberByName); |
| } |
| } |
| |
| compiler.libraries.values.forEach(addMemberByName); |
| } |
| |
| String get name => 'Enqueue'; |
| |
| EnqueueTask(Compiler compiler) |
| : resolution = new ResolutionEnqueuer( |
| compiler, compiler.backend.createItemCompilationContext), |
| codegen = new CodegenEnqueuer( |
| compiler, compiler.backend.createItemCompilationContext), |
| super(compiler) { |
| codegen.task = this; |
| resolution.task = this; |
| |
| codegen.nativeEnqueuer = compiler.backend.nativeCodegenEnqueuer(codegen); |
| resolution.nativeEnqueuer = |
| compiler.backend.nativeResolutionEnqueuer(resolution); |
| } |
| } |
| |
| abstract class Enqueuer { |
| final String name; |
| final Compiler compiler; // TODO(ahe): Remove this dependency. |
| final ItemCompilationContextCreator itemCompilationContextCreator; |
| final Map<String, Link<Element>> instanceMembersByName |
| = new Map<String, Link<Element>>(); |
| final Map<String, Link<Element>> instanceFunctionsByName |
| = new Map<String, Link<Element>>(); |
| final Set<ClassElement> seenClasses = new Set<ClassElement>(); |
| final Universe universe = new Universe(); |
| |
| bool queueIsClosed = false; |
| EnqueueTask task; |
| native.NativeEnqueuer nativeEnqueuer; // Set by EnqueueTask |
| |
| bool hasEnqueuedEverything = false; |
| |
| Enqueuer(this.name, this.compiler, this.itemCompilationContextCreator); |
| |
| Queue<WorkItem> get queue; |
| |
| /// Returns [:true:] if this enqueuer is the resolution enqueuer. |
| bool get isResolutionQueue => false; |
| |
| /// Returns [:true:] if [member] has been processed by this enqueuer. |
| bool isProcessed(Element member); |
| |
| /** |
| * Documentation wanted -- johnniwinther |
| * |
| * Invariant: [element] must be a declaration element. |
| */ |
| void addToWorkList(Element element) { |
| assert(invariant(element, element.isDeclaration)); |
| internalAddToWorkList(element); |
| } |
| |
| /** |
| * Adds [element] to the work list if it has not already been processed. |
| */ |
| void internalAddToWorkList(Element element); |
| |
| void registerInstantiatedType(InterfaceType type, TreeElements elements) { |
| task.measure(() { |
| ClassElement cls = type.element; |
| elements.registerDependency(cls); |
| cls.ensureResolved(compiler); |
| universe.instantiatedTypes.add(type); |
| if (!cls.isAbstract |
| // We can't use the closed-world assumption with native abstract |
| // classes; a native abstract class may have non-abstract subclasses |
| // not declared to the program. Instances of these classes are |
| // indistinguishable from the abstract class. |
| || cls.isNative()) { |
| universe.instantiatedClasses.add(cls); |
| } |
| onRegisterInstantiatedClass(cls); |
| }); |
| } |
| |
| void registerInstantiatedClass(ClassElement cls, TreeElements elements) { |
| cls.ensureResolved(compiler); |
| registerInstantiatedType(cls.rawType, elements); |
| } |
| |
| void registerTypeLiteral(Element element, TreeElements elements) { |
| registerInstantiatedClass(compiler.typeClass, elements); |
| compiler.backend.registerTypeLiteral(element, this, elements); |
| } |
| |
| bool checkNoEnqueuedInvokedInstanceMethods() { |
| task.measure(() { |
| // Run through the classes and see if we need to compile methods. |
| for (ClassElement classElement in universe.instantiatedClasses) { |
| for (ClassElement currentClass = classElement; |
| currentClass != null; |
| currentClass = currentClass.superclass) { |
| processInstantiatedClass(currentClass); |
| } |
| } |
| }); |
| return true; |
| } |
| |
| void processInstantiatedClass(ClassElement cls) { |
| cls.implementation.forEachMember(processInstantiatedClassMember); |
| } |
| |
| void processInstantiatedClassMember(ClassElement cls, Element member) { |
| assert(invariant(member, member.isDeclaration)); |
| if (isProcessed(member)) return; |
| if (!member.isInstanceMember()) return; |
| |
| String memberName = member.name; |
| |
| if (member.kind == ElementKind.FIELD) { |
| // The obvious thing to test here would be "member.isNative()", |
| // however, that only works after metadata has been parsed/analyzed, |
| // and that may not have happened yet. |
| // So instead we use the enclosing class, which we know have had |
| // its metadata parsed and analyzed. |
| // Note: this assumes that there are no non-native fields on native |
| // classes, which may not be the case when a native class is subclassed. |
| if (cls.isNative()) { |
| compiler.world.registerUsedElement(member); |
| nativeEnqueuer.handleFieldAnnotations(member); |
| if (universe.hasInvokedGetter(member, compiler) || |
| universe.hasInvocation(member, compiler)) { |
| nativeEnqueuer.registerFieldLoad(member); |
| // In handleUnseenSelector we can't tell if the field is loaded or |
| // stored. We need the basic algorithm to be Church-Rosser, since the |
| // resolution 'reduction' order is different to the codegen order. So |
| // register that the field is also stored. In other words: if we |
| // don't register the store here during resolution, the store could be |
| // registered during codegen on the handleUnseenSelector path, and |
| // cause the set of codegen elements to include unresolved elements. |
| nativeEnqueuer.registerFieldStore(member); |
| addToWorkList(member); |
| return; |
| } |
| if (universe.hasInvokedSetter(member, compiler)) { |
| nativeEnqueuer.registerFieldStore(member); |
| // See comment after registerFieldLoad above. |
| nativeEnqueuer.registerFieldLoad(member); |
| addToWorkList(member); |
| return; |
| } |
| // Native fields need to go into instanceMembersByName as they |
| // are virtual instantiation points and escape points. |
| } else { |
| // All field initializers must be resolved as they could |
| // have an observable side-effect (and cannot be tree-shaken |
| // away). |
| addToWorkList(member); |
| return; |
| } |
| } else if (member.kind == ElementKind.FUNCTION) { |
| if (member.name == Compiler.NO_SUCH_METHOD) { |
| enableNoSuchMethod(member); |
| } |
| if (member.name == Compiler.CALL_OPERATOR_NAME && |
| !cls.typeVariables.isEmpty) { |
| registerGenericCallMethod(member, compiler.globalDependencies); |
| } |
| // If there is a property access with the same name as a method we |
| // need to emit the method. |
| if (universe.hasInvokedGetter(member, compiler)) { |
| registerClosurizedMember(member, compiler.globalDependencies); |
| addToWorkList(member); |
| return; |
| } |
| // Store the member in [instanceFunctionsByName] to catch |
| // getters on the function. |
| Link<Element> members = instanceFunctionsByName.putIfAbsent( |
| memberName, () => const Link<Element>()); |
| instanceFunctionsByName[memberName] = members.prepend(member); |
| if (universe.hasInvocation(member, compiler)) { |
| addToWorkList(member); |
| return; |
| } |
| } else if (member.kind == ElementKind.GETTER) { |
| if (universe.hasInvokedGetter(member, compiler)) { |
| addToWorkList(member); |
| return; |
| } |
| // We don't know what selectors the returned closure accepts. If |
| // the set contains any selector we have to assume that it matches. |
| if (universe.hasInvocation(member, compiler)) { |
| addToWorkList(member); |
| return; |
| } |
| } else if (member.kind == ElementKind.SETTER) { |
| if (universe.hasInvokedSetter(member, compiler)) { |
| addToWorkList(member); |
| return; |
| } |
| } |
| |
| // The element is not yet used. Add it to the list of instance |
| // members to still be processed. |
| Link<Element> members = instanceMembersByName.putIfAbsent( |
| memberName, () => const Link<Element>()); |
| instanceMembersByName[memberName] = members.prepend(member); |
| } |
| |
| void enableNoSuchMethod(Element element) {} |
| void enableIsolateSupport(LibraryElement element) {} |
| |
| void onRegisterInstantiatedClass(ClassElement cls) { |
| task.measure(() { |
| if (seenClasses.contains(cls)) return; |
| // The class must be resolved to compute the set of all |
| // supertypes. |
| cls.ensureResolved(compiler); |
| |
| void processClass(ClassElement cls) { |
| if (seenClasses.contains(cls)) return; |
| |
| seenClasses.add(cls); |
| cls.ensureResolved(compiler); |
| cls.implementation.forEachMember(processInstantiatedClassMember); |
| if (isResolutionQueue) { |
| compiler.resolver.checkClass(cls); |
| } |
| // We only tell the backend once that [cls] was instantiated, so |
| // any additional dependencies must be treated as global |
| // dependencies. |
| compiler.backend.registerInstantiatedClass( |
| cls, this, compiler.globalDependencies); |
| } |
| processClass(cls); |
| for (Link<DartType> supertypes = cls.allSupertypes; |
| !supertypes.isEmpty; supertypes = supertypes.tail) { |
| processClass(supertypes.head.element); |
| } |
| }); |
| } |
| |
| void registerNewSelector(Selector selector, |
| Map<String, Set<Selector>> selectorsMap) { |
| String name = selector.name; |
| Set<Selector> selectors = |
| selectorsMap.putIfAbsent(name, () => new Set<Selector>()); |
| if (!selectors.contains(selector)) { |
| selectors.add(selector); |
| handleUnseenSelector(name, selector); |
| } |
| } |
| |
| void registerInvocation(Selector selector) { |
| task.measure(() { |
| registerNewSelector(selector, universe.invokedNames); |
| }); |
| } |
| |
| void registerInvokedGetter(Selector selector) { |
| task.measure(() { |
| registerNewSelector(selector, universe.invokedGetters); |
| }); |
| } |
| |
| void registerInvokedSetter(Selector selector) { |
| task.measure(() { |
| registerNewSelector(selector, universe.invokedSetters); |
| }); |
| } |
| |
| /// Called when [:const Symbol(name):] is seen. |
| void registerConstSymbol(String name, TreeElements elements) { |
| compiler.backend.registerConstSymbol(name, elements); |
| } |
| |
| void pretendElementWasUsed(Element element, TreeElements elements) { |
| if (!compiler.backend.isNeededForReflection(element)) return; |
| if (Elements.isUnresolved(element)) { |
| // Ignore. |
| } else if (element.isSynthesized |
| && element.getLibrary().isPlatformLibrary) { |
| // TODO(ahe): Work-around for http://dartbug.com/11205. |
| } else if (element.isConstructor()) { |
| ClassElement cls = element.declaration.getEnclosingClass(); |
| registerInstantiatedType(cls.rawType, elements); |
| registerStaticUse(element.declaration); |
| } else if (element.isClass()) { |
| ClassElement cls = element.declaration; |
| registerInstantiatedClass(cls, elements); |
| // Make sure that even abstract classes are considered instantiated. |
| universe.instantiatedClasses.add(cls); |
| } else if (element.impliesType()) { |
| // Don't enqueue typedefs, and type variables. |
| } else if (Elements.isStaticOrTopLevel(element)) { |
| registerStaticUse(element.declaration); |
| } else if (element.isInstanceMember()) { |
| Selector selector = new Selector.fromElement(element, compiler); |
| registerSelectorUse(selector); |
| if (element.isField()) { |
| Selector selector = |
| new Selector.setter(element.name, element.getLibrary()); |
| registerInvokedSetter(selector); |
| } |
| } |
| } |
| |
| /// Called when [:new Symbol(...):] is seen. |
| void registerNewSymbol(TreeElements elements) { |
| compiler.backend.registerNewSymbol(elements); |
| } |
| |
| void enqueueEverything() { |
| if (hasEnqueuedEverything) return; |
| compiler.log('Enqueuing everything'); |
| task.ensureAllElementsByName(); |
| for (Link link in task.allElementsByName.values) { |
| for (Element element in link) { |
| pretendElementWasUsed(element, compiler.globalDependencies); |
| } |
| } |
| hasEnqueuedEverything = true; |
| } |
| |
| processLink(Map<String, Link<Element>> map, |
| String memberName, |
| bool f(Element e)) { |
| Link<Element> members = map[memberName]; |
| if (members != null) { |
| // [f] might add elements to [: map[memberName] :] during the loop below |
| // so we create a new list for [: map[memberName] :] and prepend the |
| // [remaining] members after the loop. |
| map[memberName] = const Link<Element>(); |
| LinkBuilder<Element> remaining = new LinkBuilder<Element>(); |
| for (; !members.isEmpty; members = members.tail) { |
| if (!f(members.head)) remaining.addLast(members.head); |
| } |
| map[memberName] = remaining.toLink(map[memberName]); |
| } |
| } |
| |
| processInstanceMembers(String n, bool f(Element e)) { |
| processLink(instanceMembersByName, n, f); |
| } |
| |
| processInstanceFunctions(String n, bool f(Element e)) { |
| processLink(instanceFunctionsByName, n, f); |
| } |
| |
| void handleUnseenSelector(String methodName, Selector selector) { |
| processInstanceMembers(methodName, (Element member) { |
| if (selector.appliesUnnamed(member, compiler)) { |
| if (member.isFunction() && selector.isGetter()) { |
| registerClosurizedMember(member, compiler.globalDependencies); |
| } |
| if (member.isField() && member.getEnclosingClass().isNative()) { |
| if (selector.isGetter() || selector.isCall()) { |
| nativeEnqueuer.registerFieldLoad(member); |
| // We have to also handle storing to the field because we only get |
| // one look at each member and there might be a store we have not |
| // seen yet. |
| // TODO(sra): Process fields for storing separately. |
| nativeEnqueuer.registerFieldStore(member); |
| } else { |
| assert(selector.isSetter()); |
| nativeEnqueuer.registerFieldStore(member); |
| // We have to also handle loading from the field because we only get |
| // one look at each member and there might be a load we have not |
| // seen yet. |
| // TODO(sra): Process fields for storing separately. |
| nativeEnqueuer.registerFieldLoad(member); |
| } |
| } |
| addToWorkList(member); |
| return true; |
| } |
| return false; |
| }); |
| if (selector.isGetter()) { |
| processInstanceFunctions(methodName, (Element member) { |
| if (selector.appliesUnnamed(member, compiler)) { |
| registerClosurizedMember(member, compiler.globalDependencies); |
| return true; |
| } |
| return false; |
| }); |
| } |
| } |
| |
| /** |
| * Documentation wanted -- johnniwinther |
| * |
| * Invariant: [element] must be a declaration element. |
| */ |
| void registerStaticUse(Element element) { |
| if (element == null) return; |
| assert(invariant(element, element.isDeclaration)); |
| addToWorkList(element); |
| compiler.backend.registerStaticUse(element, this); |
| } |
| |
| void registerGetOfStaticFunction(FunctionElement element) { |
| registerStaticUse(element); |
| registerInstantiatedClass(compiler.closureClass, |
| compiler.globalDependencies); |
| universe.staticFunctionsNeedingGetter.add(element); |
| } |
| |
| void registerDynamicInvocation(Selector selector) { |
| assert(selector != null); |
| registerInvocation(selector); |
| } |
| |
| void registerSelectorUse(Selector selector) { |
| if (selector.isGetter()) { |
| registerInvokedGetter(selector); |
| } else if (selector.isSetter()) { |
| registerInvokedSetter(selector); |
| } else { |
| registerInvocation(selector); |
| } |
| } |
| |
| void registerDynamicGetter(Selector selector) { |
| registerInvokedGetter(selector); |
| } |
| |
| void registerDynamicSetter(Selector selector) { |
| registerInvokedSetter(selector); |
| } |
| |
| void registerFieldGetter(Element element) { |
| universe.fieldGetters.add(element); |
| } |
| |
| void registerFieldSetter(Element element) { |
| universe.fieldSetters.add(element); |
| } |
| |
| void registerIsCheck(DartType type, TreeElements elements) { |
| type = universe.registerIsCheck(type, compiler); |
| // Even in checked mode, type annotations for return type and argument |
| // types do not imply type checks, so there should never be a check |
| // against the type variable of a typedef. |
| assert(type.kind != TypeKind.TYPE_VARIABLE || |
| !type.element.enclosingElement.isTypedef()); |
| compiler.backend.registerIsCheck(type, this, elements); |
| } |
| |
| /** |
| * If a factory constructor is used with type arguments, we lose track |
| * which arguments could be used to create instances of classes that use their |
| * type variables as expressions, so we have to remember if we saw such a use. |
| */ |
| void registerFactoryWithTypeArguments(TreeElements elements) { |
| universe.usingFactoryWithTypeArguments = true; |
| } |
| |
| void registerAsCheck(DartType type, TreeElements elements) { |
| registerIsCheck(type, elements); |
| compiler.backend.registerAsCheck(type, this, elements); |
| } |
| |
| void registerGenericCallMethod(Element element, TreeElements elements) { |
| compiler.backend.registerGenericCallMethod(element, this, elements); |
| universe.genericCallMethods.add(element); |
| } |
| |
| void registerBoundClosure() { |
| registerInstantiatedClass(compiler.boundClosureClass, |
| // Precise dependency is not important here. |
| compiler.globalDependencies); |
| } |
| |
| void registerClosurizedMember(Element element, TreeElements elements) { |
| assert(element.isInstanceMember()); |
| registerIfGeneric(element, elements); |
| registerBoundClosure(); |
| universe.closurizedMembers.add(element); |
| } |
| |
| |
| void registerIfGeneric(Element element, TreeElements elements) { |
| if (element.computeType(compiler).containsTypeVariables) { |
| compiler.backend.registerGenericClosure(element, this, elements); |
| universe.genericClosures.add(element); |
| } |
| } |
| |
| void registerClosure(Element element, TreeElements elements) { |
| registerIfGeneric(element, elements); |
| } |
| |
| void forEach(f(WorkItem work)) { |
| do { |
| while (!queue.isEmpty) { |
| // TODO(johnniwinther): Find an optimal process order. |
| f(queue.removeLast()); |
| } |
| onQueueEmpty(); |
| } while (!queue.isEmpty); |
| } |
| |
| void onQueueEmpty() { |
| compiler.backend.onQueueEmpty(this); |
| } |
| |
| void logSummary(log(message)) { |
| _logSpecificSummary(log); |
| nativeEnqueuer.logSummary(log); |
| } |
| |
| /// Log summary specific to the concrete enqueuer. |
| void _logSpecificSummary(log(message)); |
| |
| String toString() => 'Enqueuer($name)'; |
| } |
| |
| /// [Enqueuer] which is specific to resolution. |
| class ResolutionEnqueuer extends Enqueuer { |
| /** |
| * Map from declaration elements to the [TreeElements] object holding the |
| * resolution mapping for the element implementation. |
| * |
| * Invariant: Key elements are declaration elements. |
| */ |
| final Map<Element, TreeElements> resolvedElements; |
| |
| final Queue<ResolutionWorkItem> queue; |
| |
| /** |
| * A deferred task queue for the resolution phase which is processed |
| * when the resolution queue has been emptied. |
| */ |
| final Queue<DeferredTask> deferredTaskQueue; |
| |
| ResolutionEnqueuer(Compiler compiler, |
| ItemCompilationContext itemCompilationContextCreator()) |
| : super('resolution enqueuer', compiler, itemCompilationContextCreator), |
| resolvedElements = new Map<Element, TreeElements>(), |
| queue = new Queue<ResolutionWorkItem>(), |
| deferredTaskQueue = new Queue<DeferredTask>(); |
| |
| bool get isResolutionQueue => true; |
| |
| bool isProcessed(Element member) => resolvedElements.containsKey(member); |
| |
| /// Returns [:true:] if [element] has actually been used. |
| bool isLive(Element element) { |
| if (seenClasses.contains(element)) return true; |
| if (getCachedElements(element) != null) return true; |
| return false; |
| } |
| |
| TreeElements getCachedElements(Element element) { |
| // TODO(ngeoffray): Get rid of this check. |
| if (element.enclosingElement.isClosure()) { |
| closureMapping.ClosureClassElement cls = element.enclosingElement; |
| element = cls.methodElement; |
| } else if (element.isGenerativeConstructorBody()) { |
| ConstructorBodyElement body = element; |
| element = body.constructor; |
| } |
| Element owner = element.getOutermostEnclosingMemberOrTopLevel(); |
| if (owner == null) { |
| owner = element; |
| } |
| return resolvedElements[owner.declaration]; |
| } |
| |
| void internalAddToWorkList(Element element) { |
| if (getCachedElements(element) != null) return; |
| if (queueIsClosed) { |
| throw new SpannableAssertionFailure(element, |
| "Resolution work list is closed. Trying to add $element."); |
| } |
| compiler.world.registerUsedElement(element); |
| |
| queue.add(new ResolutionWorkItem(element, itemCompilationContextCreator())); |
| |
| // Enable isolate support if we start using something from the |
| // isolate library, or timers for the async library. |
| LibraryElement library = element.getLibrary(); |
| if (!compiler.hasIsolateSupport()) { |
| String uri = library.canonicalUri.toString(); |
| if (uri == 'dart:isolate') { |
| enableIsolateSupport(library); |
| } else if (uri == 'dart:async') { |
| if (element.name == '_createTimer' || |
| element.name == '_createPeriodicTimer') { |
| // The [:Timer:] class uses the event queue of the isolate |
| // library, so we make sure that event queue is generated. |
| enableIsolateSupport(library); |
| } |
| } |
| } |
| |
| if (element.isGetter() && element.name == Compiler.RUNTIME_TYPE) { |
| // Enable runtime type support if we discover a getter called runtimeType. |
| // We have to enable runtime type before hitting the codegen, so |
| // that constructors know whether they need to generate code for |
| // runtime type. |
| compiler.enabledRuntimeType = true; |
| // TODO(ahe): Record precise dependency here. |
| compiler.backend.registerRuntimeType(this, compiler.globalDependencies); |
| } else if (element == compiler.functionApplyMethod) { |
| compiler.enabledFunctionApply = true; |
| } else if (element == compiler.invokeOnMethod) { |
| compiler.enabledInvokeOn = true; |
| } |
| |
| nativeEnqueuer.registerElement(element); |
| } |
| |
| void enableIsolateSupport(LibraryElement element) { |
| compiler.isolateLibrary = element.patch; |
| var startRootIsolate = |
| compiler.isolateHelperLibrary.find(Compiler.START_ROOT_ISOLATE); |
| addToWorkList(startRootIsolate); |
| compiler.globalDependencies.registerDependency(startRootIsolate); |
| addToWorkList(compiler.isolateHelperLibrary.find('_currentIsolate')); |
| addToWorkList(compiler.isolateHelperLibrary.find('_callInIsolate')); |
| } |
| |
| void enableNoSuchMethod(Element element) { |
| if (compiler.enabledNoSuchMethod) return; |
| if (compiler.backend.isDefaultNoSuchMethodImplementation(element)) return; |
| |
| Selector selector = compiler.noSuchMethodSelector; |
| compiler.enabledNoSuchMethod = true; |
| compiler.backend.enableNoSuchMethod(this); |
| } |
| |
| /** |
| * Adds an action to the deferred task queue. |
| * |
| * The action is performed the next time the resolution queue has been |
| * emptied. |
| * |
| * The queue is processed in FIFO order. |
| */ |
| void addDeferredAction(Element element, DeferredAction action) { |
| if (queueIsClosed) { |
| throw new SpannableAssertionFailure(element, |
| "Resolution work list is closed. " |
| "Trying to add deferred action for $element"); |
| } |
| deferredTaskQueue.add(new DeferredTask(element, action)); |
| } |
| |
| void onQueueEmpty() { |
| emptyDeferredTaskQueue(); |
| super.onQueueEmpty(); |
| } |
| |
| void emptyDeferredTaskQueue() { |
| while (!deferredTaskQueue.isEmpty) { |
| DeferredTask task = deferredTaskQueue.removeFirst(); |
| compiler.withCurrentElement(task.element, task.action); |
| } |
| } |
| |
| void registerJsCall(Send node, ResolverVisitor resolver) { |
| nativeEnqueuer.registerJsCall(node, resolver); |
| } |
| |
| void _logSpecificSummary(log(message)) { |
| log('Resolved ${resolvedElements.length} elements.'); |
| } |
| } |
| |
| /// [Enqueuer] which is specific to code generation. |
| class CodegenEnqueuer extends Enqueuer { |
| final Queue<CodegenWorkItem> queue; |
| final Map<Element, js.Expression> generatedCode = |
| new Map<Element, js.Expression>(); |
| |
| CodegenEnqueuer(Compiler compiler, |
| ItemCompilationContext itemCompilationContextCreator()) |
| : super('codegen enqueuer', compiler, itemCompilationContextCreator), |
| queue = new Queue<CodegenWorkItem>(); |
| |
| bool isProcessed(Element member) => |
| member.isAbstract || generatedCode.containsKey(member); |
| |
| void internalAddToWorkList(Element element) { |
| // Don't generate code for foreign elements. |
| if (element.isForeign(compiler)) return; |
| |
| // Codegen inlines field initializers. It only needs to generate |
| // code for checked setters. |
| if (element.isField() && element.isInstanceMember()) { |
| if (!compiler.enableTypeAssertions |
| || element.enclosingElement.isClosure()) { |
| return; |
| } |
| } |
| |
| if (queueIsClosed) { |
| throw new SpannableAssertionFailure(element, |
| "Codegen work list is closed. Trying to add $element"); |
| } |
| CodegenWorkItem workItem = new CodegenWorkItem( |
| element, itemCompilationContextCreator()); |
| queue.add(workItem); |
| } |
| |
| void _logSpecificSummary(log(message)) { |
| log('Compiled ${generatedCode.length} methods.'); |
| } |
| } |
