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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 {
     35     using System.Collections.Generic;
     36     using Exception = System.Exception;
     37     using SerializationInfo = System.Runtime.Serialization.SerializationInfo;
     38     using StreamingContext = System.Runtime.Serialization.StreamingContext;
     39 
     40     /** <summary>
     41      *  We were expecting a token but it's not found.  The current token
     42      *  is actually what we wanted next.  Used for tree node errors too.
     43      *  </summary>
     44      */
     45     [System.Serializable]
     46     public class MissingTokenException : MismatchedTokenException
     47     {
     48         private readonly object _inserted;
     49 
     50         public MissingTokenException()
     51         {
     52         }
     53 
     54         public MissingTokenException(string message)
     55             : base(message)
     56         {
     57         }
     58 
     59         public MissingTokenException(string message, Exception innerException)
     60             : base(message, innerException)
     61         {
     62         }
     63 
     64         public MissingTokenException(int expecting, IIntStream input, object inserted)
     65             : this(expecting, input, inserted, null)
     66         {
     67         }
     68 
     69         public MissingTokenException(int expecting, IIntStream input, object inserted, IList<string> tokenNames)
     70             : base(expecting, input, tokenNames)
     71         {
     72             this._inserted = inserted;
     73         }
     74 
     75         public MissingTokenException(string message, int expecting, IIntStream input, object inserted, IList<string> tokenNames)
     76             : base(message, expecting, input, tokenNames)
     77         {
     78             this._inserted = inserted;
     79         }
     80 
     81         public MissingTokenException(string message, int expecting, IIntStream input, object inserted, IList<string> tokenNames, Exception innerException)
     82             : base(message, expecting, input, tokenNames, innerException)
     83         {
     84             this._inserted = inserted;
     85         }
     86 
     87         protected MissingTokenException(SerializationInfo info, StreamingContext context)
     88             : base(info, context)
     89         {
     90         }
     91 
     92         public virtual int MissingType
     93         {
     94             get
     95             {
     96                 return Expecting;
     97             }
     98         }
     99 
    100         public override string ToString()
    101         {
    102             if (_inserted != null && Token != null)
    103             {
    104                 return "MissingTokenException(inserted " + _inserted + " at " + Token.Text + ")";
    105             }
    106             if (Token != null)
    107             {
    108                 return "MissingTokenException(at " + Token.Text + ")";
    109             }
    110             return "MissingTokenException";
    111         }
    112     }
    113 }
    114