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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>An extra token while parsing a TokenStream</summary> */
     40     [System.Serializable]
     41     public class UnwantedTokenException : MismatchedTokenException {
     42         public UnwantedTokenException() {
     43         }
     44 
     45         public UnwantedTokenException(string message)
     46             : base(message) {
     47         }
     48 
     49         public UnwantedTokenException(string message, Exception innerException)
     50             : base(message, innerException) {
     51         }
     52 
     53         public UnwantedTokenException(int expecting, IIntStream input)
     54             : base(expecting, input) {
     55         }
     56 
     57         public UnwantedTokenException(int expecting, IIntStream input, IList<string> tokenNames)
     58             : base(expecting, input, tokenNames) {
     59         }
     60 
     61         public UnwantedTokenException(string message, int expecting, IIntStream input, IList<string> tokenNames)
     62             : base(message, expecting, input, tokenNames) {
     63         }
     64 
     65         public UnwantedTokenException(string message, int expecting, IIntStream input, IList<string> tokenNames, Exception innerException)
     66             : base(message, expecting, input, tokenNames, innerException) {
     67         }
     68 
     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 
     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