1 /*
2  * [The "BSD licence"]
3  * Copyright (c) 2005-2008 Terence Parr
4  * All rights reserved.
5  *
6  * Conversion to C#:
7  * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. The name of the author may not be used to endorse or promote products
19  *    derived from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 namespace Antlr.Runtime {
34     using System.Collections.Generic;
35     using Exception = System.Exception;
36     using SerializationInfo = System.Runtime.Serialization.SerializationInfo;
37     using StreamingContext = System.Runtime.Serialization.StreamingContext;
38 
39     /** <summary>An extra token while parsing a TokenStream</summary> */
40     [System.Serializable]
41     public class UnwantedTokenException : MismatchedTokenException {
UnwantedTokenException()42         public UnwantedTokenException() {
43         }
44 
UnwantedTokenException(string message)45         public UnwantedTokenException(string message)
46             : base(message) {
47         }
48 
UnwantedTokenException(string message, Exception innerException)49         public UnwantedTokenException(string message, Exception innerException)
50             : base(message, innerException) {
51         }
52 
UnwantedTokenException(int expecting, IIntStream input)53         public UnwantedTokenException(int expecting, IIntStream input)
54             : base(expecting, input) {
55         }
56 
UnwantedTokenException(int expecting, IIntStream input, IList<string> tokenNames)57         public UnwantedTokenException(int expecting, IIntStream input, IList<string> tokenNames)
58             : base(expecting, input, tokenNames) {
59         }
60 
UnwantedTokenException(string message, int expecting, IIntStream input, IList<string> tokenNames)61         public UnwantedTokenException(string message, int expecting, IIntStream input, IList<string> tokenNames)
62             : base(message, expecting, input, tokenNames) {
63         }
64 
UnwantedTokenException(string message, int expecting, IIntStream input, IList<string> tokenNames, Exception innerException)65         public UnwantedTokenException(string message, int expecting, IIntStream input, IList<string> tokenNames, Exception innerException)
66             : base(message, expecting, input, tokenNames, innerException) {
67         }
68 
UnwantedTokenException(SerializationInfo info, StreamingContext context)69         protected UnwantedTokenException(SerializationInfo info, StreamingContext context)
70             : base(info, context) {
71         }
72 
73         public virtual IToken UnexpectedToken {
74             get {
75                 return Token;
76             }
77         }
78 
ToString()79         public override string ToString() {
80             //int unexpectedType = getUnexpectedType();
81             //string unexpected = ( tokenNames != null && unexpectedType >= 0 && unexpectedType < tokenNames.Length ) ? tokenNames[unexpectedType] : unexpectedType.ToString();
82             string expected = (TokenNames != null && Expecting >= 0 && Expecting < TokenNames.Count) ? TokenNames[Expecting] : Expecting.ToString();
83 
84             string exp = ", expected " + expected;
85             if (Expecting == TokenTypes.Invalid) {
86                 exp = "";
87             }
88             if (Token == null) {
89                 return "UnwantedTokenException(found=" + null + exp + ")";
90             }
91             return "UnwantedTokenException(found=" + Token.Text + exp + ")";
92         }
93     }
94 }
95