/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.expr;
import com.caucho.quercus.statement.StatementHandle;
/**
* A handle to a top expression
*/
public class ExprHandle {
public static final ExprHandle NULL = new ExprHandle();
private final StatementHandle _statement;
private Expr _expr;
public ExprHandle(StatementHandle statement)
{
_statement = statement;
}
private ExprHandle()
{
_statement = StatementHandle.NULL;
}
/**
* Sets the expression
*/
public void setExpr(Expr expr)
{
_expr = expr;
}
/**
* Gets the expression
*/
public Expr getExpr()
{
return _expr;
}
/**
* Returns the owning statement handle.
*/
public StatementHandle getStatement()
{
return _statement;
}
}