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/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain.  As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY.  NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
package gov.nist.javax.sip.parser;

import gov.nist.javax.sip.header.*;
import gov.nist.core.*;
import java.text.ParseException;

/**
 * Parser for SIP-If-Match header.
 *
 *
 * @author Jeroen van Bemmel 

 *
 *
 * @version 1.2 $Revision: 1.3 $ $Date: 2009-07-17 18:58:04 $
 *
 * @since 1.2
 */
public class SIPIfMatchParser extends HeaderParser {

    /**
     * Creates a new instance of PriorityParser
     * @param etag the header to parse
     */
    public SIPIfMatchParser(String etag) {
        super(etag);
    }

    /**
     * Constructor
     * @param lexer the lexer to use to parse the header
     */
    protected SIPIfMatchParser(Lexer lexer) {
        super(lexer);
    }

    /**
     * parse the String header
     * @return SIPHeader (Priority object)
     * @throws SIPParseException if the message does not respect the spec.
     */
    public SIPHeader parse() throws ParseException {

        if (debug)
            dbg_enter("SIPIfMatch.parse");

        SIPIfMatch sipIfMatch = new SIPIfMatch();
        try {
            headerName(TokenTypes.SIP_IF_MATCH);

            this.lexer.SPorHT();
            this.lexer.match(TokenTypes.ID);
            Token token = lexer.getNextToken();

            sipIfMatch.setETag(token.getTokenValue());

            this.lexer.SPorHT();
            this.lexer.match('\n');

            return sipIfMatch;
        } finally {
            if (debug)
                dbg_leave("SIPIfMatch.parse");
        }
    }
}
/*
 * $Log: not supported by cvs2svn $
 * Revision 1.2  2006/07/13 09:02:08  mranga
 * Issue number:
 * Obtained from:
 * Submitted by:  jeroen van bemmel
 * Reviewed by:   mranga
 * Moved some changes from jain-sip-1.2 to java.net
 *
 * CVS: ----------------------------------------------------------------------
 * CVS: Issue number:
 * CVS:   If this change addresses one or more issues,
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 *
 * Revision 1.3  2006/06/19 06:47:27  mranga
 * javadoc fixups
 *
 * Revision 1.2  2006/06/16 15:26:28  mranga
 * Added NIST disclaimer to all public domain files. Clean up some javadoc. Fixed a leak
 *
 * Revision 1.1  2005/10/27 20:49:00  jeroen
 * added support for RFC3903 PUBLISH
 *
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 */