Linter Demo

Errors: 1

Warnings: 11

File: /home/fstrocco/Dart/dart/benchmark/compiler/lib/src/resolution/send_resolver.dart

// Copyright (c) 2015, 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.semantics_visitor; enum SendStructureKind { GET, SET, INVOKE, UNARY, NOT, BINARY, EQ, NOT_EQ, COMPOUND, INDEX, INDEX_SET, COMPOUND_INDEX_SET, PREFIX, POSTFIX, INDEX_PREFIX, INDEX_POSTFIX, } abstract class SendResolverMixin { TreeElements get elements; internalError(Spannable spannable, String message); AccessSemantics handleStaticallyResolvedAccess(Send node, Element element, Element getter) { if (element.isErroneous) { return new StaticAccess.unresolved(element); } else if (element.isParameter) { return new StaticAccess.parameter(element); } else if (element.isLocal) { if (element.isFunction) { return new StaticAccess.localFunction(element); } else { return new StaticAccess.localVariable(element); } } else if (element.isStatic) { if (element.isField) { return new StaticAccess.staticField(element); } else if (element.isGetter) { return new StaticAccess.staticGetter(element); } else if (element.isSetter) { if (getter != null) { CompoundAccessKind accessKind; if (getter.isGetter) { accessKind = CompoundAccessKind.STATIC_GETTER_SETTER; } else { accessKind = CompoundAccessKind.STATIC_METHOD_SETTER; } return new CompoundAccessSemantics( accessKind, getter, element); } else { return new StaticAccess.staticSetter(element); } } else { return new StaticAccess.staticMethod(element); } } else if (element.isTopLevel) { if (element.isField) { return new StaticAccess.topLevelField(element); } else if (element.isGetter) { return new StaticAccess.topLevelGetter(element); } else if (element.isSetter) { if (getter != null) { CompoundAccessKind accessKind; if (getter.isGetter) { accessKind = CompoundAccessKind.TOPLEVEL_GETTER_SETTER; } else { accessKind = CompoundAccessKind.TOPLEVEL_METHOD_SETTER; } return new CompoundAccessSemantics( accessKind, getter, element); } else { return new StaticAccess.topLevelSetter(element); } } else { return new StaticAccess.topLevelMethod(element); } } else { return internalError( node, "Unhandled resolved property access: $element"); } } SendStructure computeSendStructure(Send node) { if (elements.isAssert(node)) { if (!node.arguments.isEmpty && node.arguments.tail.isEmpty) { return const AssertStructure(); } else { return const InvalidAssertStructure(); } } AssignmentOperator assignmentOperator; UnaryOperator unaryOperator; BinaryOperator binaryOperator; IncDecOperator incDecOperator; if (node.isOperator) { String operatorText = node.selector.asOperator().source; if (operatorText == 'is') { if (node.isIsNotCheck) { return new IsNotStructure( elements.getType(node.arguments.single.asSend().receiver)); } else { return new IsStructure(elements.getType(node.arguments.single)); } } else if (operatorText == 'as') { return new AsStructure(elements.getType(node.arguments.single)); } else if (operatorText == '&&') { return const LogicalAndStructure(); } else if (operatorText == '||') { return const LogicalOrStructure(); } } SendStructureKind kind; if (node.asSendSet() != null) { SendSet sendSet = node.asSendSet(); String operatorText = sendSet.assignmentOperator.source; if (sendSet.isPrefix || sendSet.isPostfix) { kind = sendSet.isPrefix ? SendStructureKind.PREFIX : SendStructureKind.POSTFIX; incDecOperator = IncDecOperator.parse(operatorText); if (incDecOperator == null) { return internalError( node, "No inc/dec operator for '$operatorText'."); } } else { assignmentOperator = AssignmentOperator.parse(operatorText); if (assignmentOperator != null) { switch (assignmentOperator.kind) { case AssignmentOperatorKind.ASSIGN: kind = SendStructureKind.SET; break; default: kind = SendStructureKind.COMPOUND; } } else { return internalError( node, "No assignment operator for '$operatorText'."); } } } else if (!node.isPropertyAccess) { kind = SendStructureKind.INVOKE; } else { kind = SendStructureKind.GET; } if (node.isOperator) { String operatorText = node.selector.asOperator().source; if (node.arguments.isEmpty) { unaryOperator = UnaryOperator.parse(operatorText); if (unaryOperator != null) { switch (unaryOperator.kind) { case UnaryOperatorKind.NOT: kind = SendStructureKind.NOT; break; default: kind = SendStructureKind.UNARY; break; } } else { return const InvalidUnaryStructure(); } } else { binaryOperator = BinaryOperator.parse(operatorText); if (binaryOperator != null) { switch (binaryOperator.kind) { case BinaryOperatorKind.EQ: kind = SendStructureKind.EQ; break; case BinaryOperatorKind.NOT_EQ: if (node.isSuperCall) { // `super != foo` is a compile-time error. return const InvalidBinaryStructure(); } kind = SendStructureKind.NOT_EQ; break; case BinaryOperatorKind.INDEX: if (node.isPrefix) { kind = SendStructureKind.INDEX_PREFIX; } else if (node.isPostfix) { kind = SendStructureKind.INDEX_POSTFIX; } else if (node.arguments.tail.isEmpty) { // a[b] kind = SendStructureKind.INDEX; } else { if (kind == SendStructureKind.COMPOUND) { // a[b] += c kind = SendStructureKind.COMPOUND_INDEX_SET; } else { // a[b] = c kind = SendStructureKind.INDEX_SET; } } break; default: kind = SendStructureKind.BINARY; break; } } else { return const InvalidBinaryStructure(); } } } AccessSemantics semantics = computeAccessSemantics( node, isGetOrSet: kind == SendStructureKind.GET || kind == SendStructureKind.SET, isInvoke: kind == SendStructureKind.INVOKE, isCompound: kind == SendStructureKind.COMPOUND || kind == SendStructureKind.COMPOUND_INDEX_SET || kind == SendStructureKind.PREFIX || kind == SendStructureKind.POSTFIX || kind == SendStructureKind.INDEX_PREFIX || kind == SendStructureKind.INDEX_POSTFIX); if (semantics == null) { return internalError(node, 'No semantics for $node'); } Selector selector = elements.getSelector(node); switch (kind) { case SendStructureKind.GET: return new GetStructure(semantics, selector); case SendStructureKind.SET: return new SetStructure(semantics, selector); case SendStructureKind.INVOKE: return new InvokeStructure(semantics, selector); case SendStructureKind.UNARY: return new UnaryStructure(semantics, unaryOperator, selector); case SendStructureKind.NOT: assert(selector == null); return new NotStructure(semantics, selector); case SendStructureKind.BINARY: return new BinaryStructure(semantics, binaryOperator, selector); case SendStructureKind.INDEX: return new IndexStructure(semantics, selector); case SendStructureKind.EQ: return new EqualsStructure(semantics, selector); case SendStructureKind.NOT_EQ: return new NotEqualsStructure(semantics, selector); case SendStructureKind.COMPOUND: Selector getterSelector = elements.getGetterSelectorInComplexSendSet(node); return new CompoundStructure( semantics, assignmentOperator, getterSelector, selector); case SendStructureKind.INDEX_SET: return new IndexSetStructure(semantics, selector); case SendStructureKind.COMPOUND_INDEX_SET: Selector getterSelector = elements.getGetterSelectorInComplexSendSet(node); return new CompoundIndexSetStructure( semantics, assignmentOperator, getterSelector, selector); case SendStructureKind.INDEX_PREFIX: Selector getterSelector = elements.getGetterSelectorInComplexSendSet(node); return new IndexPrefixStructure( semantics, incDecOperator, getterSelector, selector); case SendStructureKind.INDEX_POSTFIX: Selector getterSelector = elements.getGetterSelectorInComplexSendSet(node); return new IndexPostfixStructure( semantics, incDecOperator, getterSelector, selector); case SendStructureKind.PREFIX: Selector getterSelector = elements.getGetterSelectorInComplexSendSet(node); return new PrefixStructure( semantics, incDecOperator, getterSelector, selector); case SendStructureKind.POSTFIX: Selector getterSelector = elements.getGetterSelectorInComplexSendSet(node); return new PostfixStructure( semantics, incDecOperator, getterSelector, selector); } } AccessSemantics computeAccessSemantics(Send node, {bool isGetOrSet: false, bool isInvoke: false, bool isCompound: false}) { Element element = elements[node]; Element getter = isCompound ? elements[node.selector] : null; if (elements.isTypeLiteral(node)) { DartType dartType = elements.getTypeLiteralType(node); // TODO(johnniwinther): Handle deferred constants. There are runtime // but not compile-time constants and should have their own // [DeferredConstantExpression] class. ConstantExpression constant = elements.getConstant( isInvoke ? node.selector : node); switch (dartType.kind) { case TypeKind.INTERFACE: return new ConstantAccess.classTypeLiteral(constant); case TypeKind.TYPEDEF: return new ConstantAccess.typedefTypeLiteral(constant); case TypeKind.TYPE_VARIABLE: return new StaticAccess.typeParameterTypeLiteral(dartType.element); case TypeKind.DYNAMIC: return new ConstantAccess.dynamicTypeLiteral(constant); default: return internalError(node, "Unexpected type literal type: $dartType"); } } else if (node.isSuperCall) { if (Elements.isUnresolved(element)) { return new StaticAccess.unresolved(element); } else if (isCompound && Elements.isUnresolved(getter)) { // TODO(johnniwinther): Ensure that [getter] is not null. This happens // in the case of missing super getter. return new StaticAccess.unresolved(getter); } else if (element.isField) { if (getter != null && getter != element) { CompoundAccessKind accessKind; if (getter.isField) { accessKind = CompoundAccessKind.SUPER_FIELD_FIELD; } else if (getter.isGetter) { accessKind = CompoundAccessKind.SUPER_GETTER_FIELD; } else { return internalError(node, "Unsupported super call: $node : $element/$getter."); } return new CompoundAccessSemantics(accessKind, getter, element); } return new StaticAccess.superField(element); } else if (element.isGetter) { return new StaticAccess.superGetter(element); } else if (element.isSetter) { if (getter != null) { CompoundAccessKind accessKind; if (getter.isField) { accessKind = CompoundAccessKind.SUPER_FIELD_SETTER; } else if (getter.isGetter) { accessKind = CompoundAccessKind.SUPER_GETTER_SETTER; } else { accessKind = CompoundAccessKind.SUPER_METHOD_SETTER; } return new CompoundAccessSemantics(accessKind, getter, element); } return new StaticAccess.superSetter(element); } else if (isCompound) { return new CompoundAccessSemantics( CompoundAccessKind.SUPER_GETTER_SETTER, getter, element); } else { return new StaticAccess.superMethod(element); } } else if (node.isOperator) { return new DynamicAccess.dynamicProperty(node.receiver); } else if (Elements.isClosureSend(node, element)) { if (element == null) { if (node.selector.isThis()) { return new AccessSemantics.thisAccess(); } else { return new AccessSemantics.expression(); } } else if (Elements.isErroneous(element)) { return new StaticAccess.unresolved(element); } else { return handleStaticallyResolvedAccess(node, element, getter); } } else { if (Elements.isErroneous(element)) { return new StaticAccess.unresolved(element); } else if (element == null || element.isInstanceMember) { if (node.receiver == null || node.receiver.isThis()) { return new AccessSemantics.thisProperty(); } else { return new DynamicAccess.dynamicProperty(node.receiver); } } else if (element.impliesType) { // TODO(johnniwinther): Provide an [ErroneousElement]. // This happens for code like `C.this`. return new StaticAccess.unresolved(null); } else { return handleStaticallyResolvedAccess(node, element, getter); } } } ConstructorAccessSemantics computeConstructorAccessSemantics( ConstructorElement constructor, DartType type) { if (constructor.isErroneous) { return new ConstructorAccessSemantics( ConstructorAccessKind.ERRONEOUS, constructor, type); } else if (constructor.isRedirectingFactory) { ConstructorElement effectiveTarget = constructor.effectiveTarget; if (effectiveTarget == constructor || effectiveTarget.isErroneous) { return new ConstructorAccessSemantics( ConstructorAccessKind.ERRONEOUS_REDIRECTING_FACTORY, constructor, type); } ConstructorAccessSemantics effectiveTargetSemantics = computeConstructorAccessSemantics( effectiveTarget, constructor.computeEffectiveTargetType(type)); if (effectiveTargetSemantics.isErroneous) { return new RedirectingFactoryConstructorAccessSemantics( ConstructorAccessKind.ERRONEOUS_REDIRECTING_FACTORY, constructor, type, effectiveTargetSemantics); } return new RedirectingFactoryConstructorAccessSemantics( ConstructorAccessKind.REDIRECTING_FACTORY, constructor, type, effectiveTargetSemantics); } else if (constructor.isFactoryConstructor) { return new ConstructorAccessSemantics( ConstructorAccessKind.FACTORY, constructor, type); } else if (constructor.isRedirectingGenerative) { if (constructor.enclosingClass.isAbstract) { return new ConstructorAccessSemantics( ConstructorAccessKind.ABSTRACT, constructor, type); } return new ConstructorAccessSemantics( ConstructorAccessKind.REDIRECTING_GENERATIVE, constructor, type); } else if (constructor.enclosingClass.isAbstract) { return new ConstructorAccessSemantics( ConstructorAccessKind.ABSTRACT, constructor, type); } else { return new ConstructorAccessSemantics( ConstructorAccessKind.GENERATIVE, constructor, type); } } NewStructure computeNewStructure(NewExpression node) { if (node.isConst) { return new ConstInvokeStructure(elements.getConstant(node)); } Element element = elements[node.send]; Selector selector = elements.getSelector(node.send); DartType type = elements.getType(node); ConstructorAccessSemantics constructorAccessSemantics = computeConstructorAccessSemantics(element, type); return new NewInvokeStructure(constructorAccessSemantics, selector); } }