/*
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * The Initial Developer of this code is David Baum.
 * Portions created by David Baum are Copyright (C) 1999 David Baum.
 * All Rights Reserved.
 *
 * Portions created by John Hansen are Copyright (C) 2005 John Hansen.
 * All Rights Reserved.
 *
 */

#include "NegateExpr.h"



Expr* NegateExpr::Clone(Mapping *b) const
{
	return new NegateExpr(Get(0)->Clone(b));
}


bool NegateExpr::EmitBranch_(Bytecode &b, int label, bool condition) const
{
	return Get(0)->EmitBranch(b, label, !condition);
}


bool NegateExpr::Evaluate(int &value) const
{
	if (!Get(0)->Evaluate(value)) return false;

	value = value ? 0 : 1;

	return true;
}