| /******************************************************************************* |
| * Copyright (c) 2009, 2015 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 |
| * Natan Ridge |
| * Sergey Prigogin (Google) |
| *******************************************************************************/ |
| package org.eclipse.cdt.internal.core.dom.parser.cpp; |
| |
| import org.eclipse.cdt.core.dom.ast.ASTVisitor; |
| import org.eclipse.cdt.core.dom.ast.IASTExpression; |
| import org.eclipse.cdt.core.dom.ast.IASTImplicitDestructorName; |
| import org.eclipse.cdt.core.dom.ast.IASTNode; |
| import org.eclipse.cdt.core.dom.ast.IType; |
| import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTExpression; |
| import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTPackExpansionExpression; |
| import org.eclipse.cdt.internal.core.dom.parser.ASTNode; |
| import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent; |
| import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPEvaluation; |
| import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalPackExpansion; |
| |
| /** |
| * Implementation of pack expansion expression. |
| */ |
| public class CPPASTPackExpansionExpression extends ASTNode implements ICPPASTPackExpansionExpression, IASTAmbiguityParent { |
| private IASTExpression fPattern; |
| private ICPPEvaluation fEvaluation; |
| |
| public CPPASTPackExpansionExpression(IASTExpression pattern) { |
| setPattern(pattern); |
| } |
| |
| @Override |
| public void setPattern(IASTExpression pattern) { |
| assertNotFrozen(); |
| |
| fPattern= pattern; |
| if (pattern != null) { |
| pattern.setParent(this); |
| pattern.setPropertyInParent(ICPPASTPackExpansionExpression.PATTERN); |
| } |
| } |
| |
| @Override |
| public IASTExpression getPattern() { |
| return fPattern; |
| } |
| |
| @Override |
| public CPPASTPackExpansionExpression copy() { |
| return copy(CopyStyle.withoutLocations); |
| } |
| |
| @Override |
| public CPPASTPackExpansionExpression copy(CopyStyle style) { |
| CPPASTPackExpansionExpression copy = new CPPASTPackExpansionExpression(fPattern.copy(style)); |
| return copy(copy, style); |
| } |
| |
| @Override |
| public ICPPEvaluation getEvaluation() { |
| if (fEvaluation == null) { |
| fEvaluation = new EvalPackExpansion(((ICPPASTExpression) fPattern).getEvaluation(), this); |
| } |
| return fEvaluation; |
| } |
| |
| @Override |
| public IType getExpressionType() { |
| return CPPEvaluation.getType(this); |
| } |
| |
| @Override |
| public boolean isLValue() { |
| return fPattern.isLValue(); |
| } |
| |
| @Override |
| public ValueCategory getValueCategory() { |
| return fPattern.getValueCategory(); |
| } |
| |
| @Override |
| public IASTImplicitDestructorName[] getImplicitDestructorNames() { |
| return IASTImplicitDestructorName.EMPTY_NAME_ARRAY; // Pack expression is never a full-expression. |
| } |
| |
| @Override |
| public boolean accept(ASTVisitor visitor) { |
| if (visitor.shouldVisitExpressions) { |
| switch (visitor.visit(this)) { |
| case ASTVisitor.PROCESS_ABORT: return false; |
| case ASTVisitor.PROCESS_SKIP: return true; |
| default : break; |
| } |
| } |
| if (!fPattern.accept(visitor)) { |
| return false; |
| } |
| if (visitor.shouldVisitExpressions && visitor.leave(this) == ASTVisitor.PROCESS_ABORT) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public void replace(IASTNode child, IASTNode other) { |
| if (child == fPattern) { |
| other.setPropertyInParent(child.getPropertyInParent()); |
| other.setParent(child.getParent()); |
| fPattern = (IASTExpression) other; |
| } |
| } |
| } |