1/*
2* Conditions Of Use
3*
4* This software was developed by employees of the National Institute of
5* Standards and Technology (NIST), an agency of the Federal Government.
6* Pursuant to title 15 Untied States Code Section 105, works of NIST
7* employees are not subject to copyright protection in the United States
8* and are considered to be in the public domain.  As a result, a formal
9* license is not needed to use the software.
10*
11* This software is provided by NIST as a service and is expressly
12* provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
13* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
14* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
15* AND DATA ACCURACY.  NIST does not warrant or make any representations
16* regarding the use of the software or the results thereof, including but
17* not limited to the correctness, accuracy, reliability or usefulness of
18* the software.
19*
20* Permission to use this software is contingent upon your acceptance
21* of the terms of this agreement
22*
23* .
24*
25*/
26/*******************************************
27 * PRODUCT OF PT INOVACAO - EST DEPARTMENT *
28 *******************************************/
29
30package gov.nist.javax.sip.parser.ims;
31
32import gov.nist.javax.sip.header.SIPHeader;
33import gov.nist.javax.sip.header.ims.Path;
34import gov.nist.javax.sip.header.ims.PathList;
35import gov.nist.javax.sip.parser.AddressParametersParser;
36import gov.nist.javax.sip.parser.Lexer;
37import gov.nist.javax.sip.parser.TokenTypes;
38
39import java.text.ParseException;
40
41/**
42 * @author ALEXANDRE MIGUEL SILVA SANTOS
43 */
44
45
46public class PathParser extends AddressParametersParser implements TokenTypes {
47
48    /**
49     * Constructor
50     */
51    public PathParser(String path) {
52        super(path);
53
54    }
55
56    protected PathParser(Lexer lexer) {
57        super(lexer);
58
59    }
60
61
62
63
64    /**
65     * parse the String message and generate the RecordRoute List Object
66     * @return SIPHeader the RecordRoute List object
67     * @throws ParseException if errors occur during the parsing
68     */
69
70    public SIPHeader parse() throws ParseException {
71
72        PathList pathList = new PathList();
73
74        if (debug)
75            dbg_enter("PathParser.parse");
76
77        try {
78            this.lexer.match(TokenTypes.PATH);
79            this.lexer.SPorHT();
80            this.lexer.match(':');
81            this.lexer.SPorHT();
82            while (true) {
83                Path path = new Path();
84                super.parse(path);
85                pathList.add(path);
86                this.lexer.SPorHT();
87                char la = lexer.lookAhead(0);
88                if (la == ',') {
89                    this.lexer.match(',');
90                    this.lexer.SPorHT();
91                } else if (la == '\n')
92                    break;
93                else
94                    throw createParseException("unexpected char");
95            }
96            return pathList;
97        } finally {
98            if (debug)
99                dbg_leave("PathParser.parse");
100        }
101
102    }
103
104
105
106}
107