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/*******************************************************************************
* Copyright (c) 2004, 2009 IBM Corporation 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:
* IBM - 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.IASTConditionalExpression;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IPointerType;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent;
/**
* @author jcamelon
*/
public class CPPASTConditionalExpression extends ASTNode implements
IASTConditionalExpression, IASTAmbiguityParent {
private IASTExpression condition;
private IASTExpression negative;
private IASTExpression positive;
public CPPASTConditionalExpression() {
}
public CPPASTConditionalExpression(IASTExpression condition, IASTExpression postive, IASTExpression negative) {
setLogicalConditionExpression(condition);
setPositiveResultExpression(postive);
setNegativeResultExpression(negative);
}
public CPPASTConditionalExpression copy() {
CPPASTConditionalExpression copy = new CPPASTConditionalExpression();
copy.setLogicalConditionExpression(condition == null ? null : condition.copy());
copy.setPositiveResultExpression(positive == null ? null : positive.copy());
copy.setNegativeResultExpression(negative == null ? null : negative.copy());
copy.setOffsetAndLength(this);
return copy;
}
public IASTExpression getLogicalConditionExpression() {
return condition;
}
public void setLogicalConditionExpression(IASTExpression expression) {
assertNotFrozen();
condition = expression;
if (expression != null) {
expression.setParent(this);
expression.setPropertyInParent(LOGICAL_CONDITION);
}
}
public IASTExpression getPositiveResultExpression() {
return positive;
}
public void setPositiveResultExpression(IASTExpression expression) {
assertNotFrozen();
this.positive = expression;
if (expression != null) {
expression.setParent(this);
expression.setPropertyInParent(POSITIVE_RESULT);
}
}
public IASTExpression getNegativeResultExpression() {
return negative;
}
public void setNegativeResultExpression(IASTExpression expression) {
assertNotFrozen();
this.negative = expression;
if (expression != null) {
expression.setParent(this);
expression.setPropertyInParent(NEGATIVE_RESULT);
}
}
@Override
public boolean accept( ASTVisitor action ){
if( action.shouldVisitExpressions ){
switch( action.visit( this ) ){
case ASTVisitor.PROCESS_ABORT : return false;
case ASTVisitor.PROCESS_SKIP : return true;
default : break;
}
}
if( condition != null ) if( !condition.accept( action ) ) return false;
if( positive != null ) if( !positive.accept( action ) ) return false;
if( negative != null ) if( !negative.accept( action ) ) return false;
if( action.shouldVisitExpressions ){
switch( action.leave( this ) ){
case ASTVisitor.PROCESS_ABORT : return false;
case ASTVisitor.PROCESS_SKIP : return true;
default : break;
}
}
return true;
}
public void replace(IASTNode child, IASTNode other) {
if( child == condition )
{
other.setPropertyInParent( child.getPropertyInParent() );
other.setParent( child.getParent() );
condition = (IASTExpression) other;
}
if( child == positive )
{
other.setPropertyInParent( child.getPropertyInParent() );
other.setParent( child.getParent() );
positive = (IASTExpression) other;
}
if( child == negative )
{
other.setPropertyInParent( child.getPropertyInParent() );
other.setParent( child.getParent() );
negative = (IASTExpression) other;
}
}
public IType getExpressionType() {
IASTExpression positiveExpression = getPositiveResultExpression();
if (positiveExpression == null) {
positiveExpression= getLogicalConditionExpression();
}
IType t2 = positiveExpression.getExpressionType();
IType t3 = getNegativeResultExpression().getExpressionType();
if (t3 instanceof IPointerType || t2 == null)
return t3;
return t2;
}
}
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