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>
40      *  We were expecting a token but it's not found.  The current token
41      *  is actually what we wanted next.  Used for tree node errors too.
42      *  </summary>
43      */
44     [System.Serializable]
45     public class MissingTokenException : MismatchedTokenException {
46         private readonly object _inserted;
47 
MissingTokenException()48         public MissingTokenException() {
49         }
50 
MissingTokenException(string message)51         public MissingTokenException(string message)
52             : base(message) {
53         }
54 
MissingTokenException(string message, Exception innerException)55         public MissingTokenException(string message, Exception innerException)
56             : base(message, innerException) {
57         }
58 
MissingTokenException(int expecting, IIntStream input, object inserted)59         public MissingTokenException(int expecting, IIntStream input, object inserted)
60             : this(expecting, input, inserted, null) {
61         }
62 
MissingTokenException(int expecting, IIntStream input, object inserted, IList<string> tokenNames)63         public MissingTokenException(int expecting, IIntStream input, object inserted, IList<string> tokenNames)
64             : base(expecting, input, tokenNames) {
65             this._inserted = inserted;
66         }
67 
MissingTokenException(string message, int expecting, IIntStream input, object inserted, IList<string> tokenNames)68         public MissingTokenException(string message, int expecting, IIntStream input, object inserted, IList<string> tokenNames)
69             : base(message, expecting, input, tokenNames) {
70             this._inserted = inserted;
71         }
72 
MissingTokenException(string message, int expecting, IIntStream input, object inserted, IList<string> tokenNames, Exception innerException)73         public MissingTokenException(string message, int expecting, IIntStream input, object inserted, IList<string> tokenNames, Exception innerException)
74             : base(message, expecting, input, tokenNames, innerException) {
75             this._inserted = inserted;
76         }
77 
MissingTokenException(SerializationInfo info, StreamingContext context)78         protected MissingTokenException(SerializationInfo info, StreamingContext context)
79             : base(info, context) {
80         }
81 
82         public virtual int MissingType {
83             get {
84                 return Expecting;
85             }
86         }
87 
ToString()88         public override string ToString() {
89             if (_inserted != null && Token != null) {
90                 return "MissingTokenException(inserted " + _inserted + " at " + Token.Text + ")";
91             }
92             if (Token != null) {
93                 return "MissingTokenException(at " + Token.Text + ")";
94             }
95             return "MissingTokenException";
96         }
97     }
98 }
99