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      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 
     48         public MissingTokenException() {
     49         }
     50 
     51         public MissingTokenException(string message)
     52             : base(message) {
     53         }
     54 
     55         public MissingTokenException(string message, Exception innerException)
     56             : base(message, innerException) {
     57         }
     58 
     59         public MissingTokenException(int expecting, IIntStream input, object inserted)
     60             : this(expecting, input, inserted, null) {
     61         }
     62 
     63         public MissingTokenException(int expecting, IIntStream input, object inserted, IList<string> tokenNames)
     64             : base(expecting, input, tokenNames) {
     65             this._inserted = inserted;
     66         }
     67 
     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 
     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 
     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 
     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