/**
* Redistribution and use of this software and associated documentation
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* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
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* products derived from this Software without prior written
* permission of Exoffice Technologies. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Exoffice Technologies. Exolab is a registered
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*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
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* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2000-2001,2003 (C) Exoffice Technologies Inc. All Rights Reserved.
*/
package org.exolab.jms.selector.parser;
import antlr.CommonAST;
import antlr.CommonToken;
import antlr.Token;
import org.exolab.jms.selector.Context;
import org.exolab.jms.selector.Type;
/**
* Selector AST node. This adds expression type and context information used
* by the tree parser to validate expressions.
*
* @version $Revision: 1.1 $ $Date: 2004/11/26 01:50:45 $
* @author <a href="mailto:tima@intalio.com">Tim Anderson</a>
* @see Context
* @see SelectorParser
* @see SelectorTreeParser
* @see Type
*/
public class SelectorAST extends CommonAST {
/**
* The return type
*/
private Type _type;
/**
* The context of the node
*/
private Context _context;
/**
* Construct a new <code>SelectorAST</code>
*/
public SelectorAST() {
_type = Type.UNDEFINED;
}
/**
* Initialise this with a token
*
* @param token the token
*/
public void initialize(final Token token) {
super.initialize(token);
_context = new Context(((CommonToken) token).getLine(),
((CommonToken) token).getColumn());
}
/**
* Sets the return type of the expression
*
* @param type the return type
*/
public void setReturnType(final Type type) {
_type = type;
}
/**
* Returns the return type of the expression
*
* @return the return type of the expression
*/
public Type getReturnType() {
return _type;
}
/**
* Returns the context of the expression
*
* @return the context of the expression
*/
public Context getContext() {
return _context;
}
} //-- SelectorAST