/*******************************************************************************
* Copyright (c) 2005, 2011 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:
* John Camelon (IBM Rational Software) - Initial API and implementation
* Yuan Zhang / Beth Tibbitts (IBM Research)
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTIfStatement;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent;
/**
* If statements for C.
*/
public class CASTIfStatement extends ASTNode implements IASTIfStatement, IASTAmbiguityParent {
private IASTExpression condition;
private IASTStatement thenClause;
private IASTStatement elseClause;
public CASTIfStatement() {
}
public CASTIfStatement(IASTExpression condition, IASTStatement thenClause) {
setConditionExpression(condition);
setThenClause(thenClause);
}
public CASTIfStatement(IASTExpression condition, IASTStatement thenClause, IASTStatement elseClause) {
this(condition, thenClause);
setElseClause(elseClause);
}
public CASTIfStatement copy() {
return copy(CopyStyle.withoutLocations);
}
public CASTIfStatement copy(CopyStyle style) {
CASTIfStatement copy = new CASTIfStatement();
copy.setConditionExpression(condition == null ? null : condition.copy(style));
copy.setThenClause(thenClause == null ? null : thenClause.copy(style));
copy.setElseClause(elseClause == null ? null : elseClause.copy(style));
copy.setOffsetAndLength(this);
if (style == CopyStyle.withLocations) {
copy.setCopyLocation(this);
}
return copy;
}
public IASTExpression getConditionExpression() {
return condition;
}
public void setConditionExpression(IASTExpression condition) {
assertNotFrozen();
this.condition = condition;
if (condition != null) {
condition.setParent(this);
condition.setPropertyInParent(CONDITION);
}
}
public IASTStatement getThenClause() {
return thenClause;
}
public void setThenClause(IASTStatement thenClause) {
assertNotFrozen();
this.thenClause = thenClause;
if (thenClause != null) {
thenClause.setParent(this);
thenClause.setPropertyInParent(THEN);
}
}
public IASTStatement getElseClause() {
return elseClause;
}
public void setElseClause(IASTStatement elseClause) {
assertNotFrozen();
this.elseClause = elseClause;
if (elseClause != null) {
elseClause.setParent(this);
elseClause.setPropertyInParent(ELSE);
}
}
private static class N {
final IASTIfStatement fIfStatement;
N fNext;
N(IASTIfStatement stmt) {
fIfStatement = stmt;
}
}
@Override
public boolean accept(ASTVisitor action) {
N stack= null;
IASTIfStatement stmt= this;
loop: for(;;) {
if (action.shouldVisitStatements) {
switch (action.visit(stmt)) {
case ASTVisitor.PROCESS_ABORT: return false;
case ASTVisitor.PROCESS_SKIP:
stmt= null;
break loop;
default: break;
}
}
IASTNode child = stmt.getConditionExpression();
if (child != null && !child.accept(action))
return false;
child= stmt.getThenClause();
if (child != null && !child.accept(action))
return false;
child= stmt.getElseClause();
if (child instanceof IASTIfStatement) {
if (action.shouldVisitStatements) {
N n= new N(stmt);
n.fNext= stack;
stack= n;
}
stmt= (IASTIfStatement) child;
} else {
if (child != null && !child.accept(action))
return false;
break loop;
}
}
if (action.shouldVisitStatements) {
if (stmt != null && action.leave(stmt) == ASTVisitor.PROCESS_ABORT)
return false;
while (stack != null) {
if (action.leave(stack.fIfStatement) == ASTVisitor.PROCESS_ABORT)
return false;
stack= stack.fNext;
}
}
return true;
}
public void replace(IASTNode child, IASTNode other) {
if( thenClause == child )
{
other.setParent( child.getParent() );
other.setPropertyInParent( child.getPropertyInParent() );
thenClause = (IASTStatement) other;
}
if( elseClause == child )
{
other.setParent( child.getParent() );
other.setPropertyInParent( child.getPropertyInParent() );
elseClause = (IASTStatement) other;
}
if( child == condition )
{
other.setPropertyInParent( child.getPropertyInParent() );
other.setParent( child.getParent() );
condition = (IASTExpression) other;
}
}
}