NoViableAltForCharException.cs :  » Inversion-of-Control-Dependency-Injection » Spring.net » Spring » Expressions » Parser » antlr » C# / CSharp Open Source

using System;
using StringBuilderSystem.Text.StringBuilder;

namespace Spring.Expressions.Parser.antlr{
  /*ANTLR Translator Generator
  * Project led by Terence Parr at http://www.jGuru.com
  * Software rights: http://www.antlr.org/license.html
  *
  * $Id:$
  */

  //
  // ANTLR C# Code Generator by Micheal Jordan
  //                            Kunle Odutola       : kunle UNDERSCORE odutola AT hotmail DOT com
  //                            Anthony Oguntimehin
  //
  // With many thanks to Eric V. Smith from the ANTLR list.
  //
  
  [Serializable]
  public class NoViableAltForCharException : RecognitionException
  {
    public char foundChar;
    
    public NoViableAltForCharException(char c, CharScanner scanner) :
          base("NoViableAlt", scanner.getFilename(), scanner.getLine(), scanner.getColumn())
    {
      foundChar = c;
    }
    
    public NoViableAltForCharException(char c, string fileName, int line, int column) : 
          base("NoViableAlt", fileName, line, column)
    {
      foundChar = c;
    }
    
    /*
    * Returns a clean error message (no line number/column information)
    */
    override public string Message
    {
      get
      {
        StringBuilder mesg = new StringBuilder("unexpected char: ");
      
        // I'm trying to mirror a change in the C++ stuff.
        // But java seems to lack something isprint-ish..
        // so we do it manually. This is probably too restrictive.
      
        if ((foundChar >= ' ') && (foundChar <= '~'))
        {
          mesg.Append('\'');
          mesg.Append(foundChar);
          mesg.Append('\'');
        }
        else
        {
          mesg.Append("0x");
          mesg.Append(((int)foundChar).ToString("X"));
        }
        return mesg.ToString();
      }
    }
  }
}