package org.jacorb.notification.filter.etcl;
/*
* JacORB - a free Java ORB
*
* Copyright (C) 1999-2014 Gerald Brose / The JacORB Team.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
import org.jacorb.notification.filter.EvaluationContext;
import org.jacorb.notification.filter.EvaluationException;
import org.jacorb.notification.filter.EvaluationResult;
import antlr.Token;
/**
* A simple node to represent PLUS operation
*/
public class PlusOperator extends UnaryOperator
{
private boolean isUnaryOperator_;
public PlusOperator(Token tok)
{
super(tok);
setName("PlusOperator");
}
public void setType(int type)
{
isUnaryOperator_ = (type == UNARY_PLUS);
}
public String toString()
{
return " +";
}
public EvaluationResult evaluate(EvaluationContext context, EvaluationResult left)
throws EvaluationException
{
if (isUnaryOperator_)
{
return left;
}
return EvaluationResult.plus(left, right().evaluate(context));
}
public boolean isStatic()
{
return (left().isStatic() && right().isStatic());
}
public void acceptInOrder(AbstractTCLVisitor visitor) throws VisitorException
{
left().acceptInOrder(visitor);
visitor.visitPlus(this);
if (!isUnaryOperator_)
{
right().acceptInOrder(visitor);
}
}
public void acceptPostOrder(AbstractTCLVisitor visitor) throws VisitorException
{
left().acceptPostOrder(visitor);
if (!isUnaryOperator_)
{
right().acceptPostOrder(visitor);
}
visitor.visitPlus(this);
}
public void acceptPreOrder(AbstractTCLVisitor visitor) throws VisitorException
{
visitor.visitPlus(this);
left().acceptPreOrder(visitor);
if (!isUnaryOperator_)
{
right().acceptPreOrder(visitor);
}
}
}