/*
* Portions Copyright 2000-2007 Sun Microsystems, Inc. All Rights
* Reserved. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program 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
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package gov.nist.siplite.parser;
import gov.nist.siplite.header.*;
import gov.nist.core.*;
/**
* Parser for a list of route headers.
*
* @version JAIN-SIP-1.1
*
* <a href="{@docRoot}/uncopyright.html">This code is in the public domain.</a>
*
* @version 1.0
*/
public class RouteParser extends AddressParametersParser {
/** Default constructor. */
RouteParser() {}
/**
* Constructor with initial routeheader field.
* @param route message to parse to set
*/
public RouteParser(String route) {
super(route);
}
/**
* Constructor with initial lexer engine.
* @param lexer initial lexer engine
*/
protected RouteParser(Lexer lexer) {
super(lexer);
}
/**
* Parses the String message and generate the Route List Object.
* @return Header the Route List object
* @throws ParseException if errors occur during the parsing
*/
public Header parse() throws ParseException {
RouteList routeList = new RouteList();
if (debug) dbg_enter("parse");
try {
this.lexer.match(TokenTypes.ROUTE);
this.lexer.SPorHT();
this.lexer.match(':');
this.lexer.SPorHT();
while (true) {
RouteHeader route = new RouteHeader();
super.parse(route);
routeList.add(route);
this.lexer.SPorHT();
if (lexer.lookAhead(0) == ',') {
this.lexer.match(',');
this.lexer.SPorHT();
} else if (lexer.lookAhead(0) == '\n') break;
else throw createParseException("unexpected char");
}
return routeList;
} finally {
if (debug) dbg_leave("parse");
}
}
}
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