| /******************************************************************************* |
| * Copyright (c) 2012, 2016 Wind River Systems, Inc. and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Markus Schorn - initial API and implementation |
| * Sergey Prigogin (Google) |
| *******************************************************************************/ |
| package org.eclipse.cdt.internal.core.dom.parser.cpp.semantics; |
| |
| import static org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory.PRVALUE; |
| |
| import org.eclipse.cdt.core.dom.ast.IASTBinaryTypeIdExpression.Operator; |
| import org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory; |
| import org.eclipse.cdt.core.dom.ast.IASTNode; |
| import org.eclipse.cdt.core.dom.ast.IBinding; |
| import org.eclipse.cdt.core.dom.ast.IType; |
| import org.eclipse.cdt.core.dom.ast.IValue; |
| import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameterMap; |
| import org.eclipse.cdt.internal.core.dom.parser.DependentValue; |
| import org.eclipse.cdt.internal.core.dom.parser.ITypeMarshalBuffer; |
| import org.eclipse.cdt.internal.core.dom.parser.ProblemType; |
| import org.eclipse.cdt.internal.core.dom.parser.ValueFactory; |
| import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPBasicType; |
| import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPEvaluation; |
| import org.eclipse.cdt.internal.core.dom.parser.cpp.InstantiationContext; |
| import org.eclipse.core.runtime.CoreException; |
| |
| /** |
| * Evaluation for a binary type-id expression. |
| */ |
| public class EvalBinaryTypeId extends CPPDependentEvaluation { |
| private final Operator fOperator; |
| private final IType fType1, fType2; |
| |
| private boolean fCheckedValueDependent; |
| private boolean fIsValueDependent; |
| |
| public EvalBinaryTypeId(Operator kind, IType type1, IType type2, IASTNode pointOfDefinition) { |
| this(kind, type1, type2, findEnclosingTemplate(pointOfDefinition)); |
| } |
| |
| public EvalBinaryTypeId(Operator kind, IType type1, IType type2, IBinding templateDefinition) { |
| super(templateDefinition); |
| fOperator= kind; |
| fType1= type1; |
| fType2= type2; |
| } |
| |
| public Operator getOperator() { |
| return fOperator; |
| } |
| |
| public IType getType1() { |
| return fType1; |
| } |
| |
| public IType getType2() { |
| return fType2; |
| } |
| |
| @Override |
| public boolean isInitializerList() { |
| return false; |
| } |
| |
| @Override |
| public boolean isFunctionSet() { |
| return false; |
| } |
| |
| @Override |
| public IType getType() { |
| switch (fOperator) { |
| case __is_base_of: |
| case __is_trivially_assignable: |
| return CPPBasicType.BOOLEAN; |
| } |
| return ProblemType.UNKNOWN_FOR_EXPRESSION; |
| } |
| |
| @Override |
| public IValue getValue() { |
| if (isValueDependent()) |
| return DependentValue.create(this); |
| |
| return ValueFactory.evaluateBinaryTypeIdExpression(fOperator, fType1, fType2); |
| } |
| |
| @Override |
| public boolean isTypeDependent() { |
| return false; |
| } |
| |
| @Override |
| public boolean isValueDependent() { |
| if (!fCheckedValueDependent) { |
| fIsValueDependent= CPPTemplates.isDependentType(fType1) || CPPTemplates.isDependentType(fType2); |
| fCheckedValueDependent= true; |
| } |
| return fIsValueDependent; |
| } |
| |
| @Override |
| public boolean isConstantExpression() { |
| return true; |
| } |
| |
| @Override |
| public boolean isEquivalentTo(ICPPEvaluation other) { |
| if (!(other instanceof EvalBinaryTypeId)) { |
| return false; |
| } |
| EvalBinaryTypeId o = (EvalBinaryTypeId) other; |
| return fOperator == o.fOperator |
| && fType1.isSameType(o.fType1) |
| && fType2.isSameType(o.fType2); |
| } |
| |
| @Override |
| public ValueCategory getValueCategory() { |
| return PRVALUE; |
| } |
| |
| @Override |
| public void marshal(ITypeMarshalBuffer buffer, boolean includeValue) throws CoreException { |
| buffer.putShort(ITypeMarshalBuffer.EVAL_BINARY_TYPE_ID); |
| buffer.putByte((byte) fOperator.ordinal()); |
| buffer.marshalType(fType1); |
| buffer.marshalType(fType2); |
| marshalTemplateDefinition(buffer); |
| } |
| |
| public static ICPPEvaluation unmarshal(short firstBytes, ITypeMarshalBuffer buffer) throws CoreException { |
| int op= buffer.getByte(); |
| IType arg1= buffer.unmarshalType(); |
| IType arg2= buffer.unmarshalType(); |
| IBinding templateDefinition= buffer.unmarshalBinding(); |
| return new EvalBinaryTypeId(Operator.values()[op], arg1, arg2, templateDefinition); |
| } |
| |
| @Override |
| public ICPPEvaluation instantiate(InstantiationContext context, int maxDepth) { |
| IType type1 = CPPTemplates.instantiateType(fType1, context); |
| IType type2 = CPPTemplates.instantiateType(fType2, context); |
| if (type1 == fType1 && type2 == fType2) |
| return this; |
| return new EvalBinaryTypeId(fOperator, type1, type2, getTemplateDefinition()); |
| } |
| |
| @Override |
| public ICPPEvaluation computeForFunctionCall(ActivationRecord record, ConstexprEvaluationContext context) { |
| return this; |
| } |
| |
| @Override |
| public int determinePackSize(ICPPTemplateParameterMap tpMap) { |
| return CPPTemplates.combinePackSize(CPPTemplates.determinePackSize(fType1, tpMap), |
| CPPTemplates.determinePackSize(fType2, tpMap)); |
| } |
| |
| @Override |
| public boolean referencesTemplateParameter() { |
| return isValueDependent(); |
| } |
| } |