/*******************************************************************************
* Copyright (c) 2009, 2011 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
*******************************************************************************/
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.IASTNode;
import org.eclipse.cdt.core.dom.ast.IProblemBinding;
import org.eclipse.cdt.core.dom.ast.IType;
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.ProblemBinding;
/**
* Implementation of pack expansion expression.
*/
public class CPPASTPackExpansionExpression extends ASTNode implements ICPPASTPackExpansionExpression, IASTAmbiguityParent {
private IASTExpression fPattern;
public CPPASTPackExpansionExpression(IASTExpression pattern) {
setPattern(pattern);
}
public void setPattern(IASTExpression pattern) {
assertNotFrozen();
fPattern= pattern;
if (pattern != null) {
pattern.setParent(this);
pattern.setPropertyInParent(ICPPASTPackExpansionExpression.PATTERN);
}
}
public IASTExpression getPattern() {
return fPattern;
}
public CPPASTPackExpansionExpression copy() {
return copy(CopyStyle.withoutLocations);
}
public CPPASTPackExpansionExpression copy(CopyStyle style) {
CPPASTPackExpansionExpression copy = new CPPASTPackExpansionExpression(fPattern.copy(style));
copy.setOffsetAndLength(this);
if (style == CopyStyle.withLocations) {
copy.setCopyLocation(this);
}
return copy;
}
public IType getExpressionType() {
final IType type = fPattern.getExpressionType();
if (type == null)
return new ProblemBinding(this, IProblemBinding.SEMANTIC_INVALID_TYPE, getRawSignatureChars());
return new CPPParameterPackType(type);
}
public boolean isLValue() {
return fPattern.isLValue();
}
public ValueCategory getValueCategory() {
return fPattern.getValueCategory();
}
@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;
}
public void replace(IASTNode child, IASTNode other) {
if (child == fPattern) {
other.setPropertyInParent(child.getPropertyInParent());
other.setParent(child.getParent());
fPattern = (IASTExpression) other;
}
}
}