commandparser.jj

Chord package into p2psim

/***************************************************************************
 *                                                                         *
 *                              CommandParser.jj                           *
 *                            -------------------                          *
 *   date                 : 17. Mai 2004, 15:11                            *
 *   copyright            : (C) 2004 Distributed and Mobile Systems Group  *
 *                              Lehrstuhl fuer Praktische Informatik       *
 *                              Universitaet Bamberg                       *
 *                              http://www.uni-bamberg.de/pi               *
 *   email                : [e-mail]                   *
 *                                                                         *
 *                                                                         *
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   A copy of the license can be found in the license.txt file supplied   *
 *   with this software or at: http://www.gnu.org/copyleft/gpl.html        *
 *                                                                         *
 ***************************************************************************/

options {
  LOOKAHEAD = 3;
  CHOICE_AMBIGUITY_CHECK = 2;
  OTHER_AMBIGUITY_CHECK = 1;
  STATIC = false;
  DEBUG_PARSER = false;
  DEBUG_LOOKAHEAD = false;
  DEBUG_TOKEN_MANAGER = false;
  ERROR_REPORTING = true;
  JAVA_UNICODE_ESCAPE = false;
  UNICODE_INPUT = false;
  IGNORE_CASE = false;
  USER_TOKEN_MANAGER = false;
  USER_CHAR_STREAM = false;
  BUILD_PARSER = true;
  BUILD_TOKEN_MANAGER = true;
  SANITY_CHECK = true;
  FORCE_LA_CHECK = false;
}

PARSER_BEGIN(CommandParser)

package de.uniba.wiai.lspi.util.console.parser;

import java.io.*;

public class CommandParser {
	 
        
        public static String parse(String toParse) throws ParseException{
            StringReader reader = new StringReader(toParse);
            CommandParser parser = new CommandParser(reader);
            String command = parser.command();
	    return command;
        }
	
	public static java.util.Hashtable parseParams(String toParse) throws ParseException{
		StringReader reader = new StringReader(toParse);
		CommandParser parser = new CommandParser(reader);
		return parser.parameters();
	}
        
}

PARSER_END(CommandParser)

SKIP :
{
" "
| "\t"
| "\n"
| "\r"

}

TOKEN :
{	
	< PARAMSTART: "-" >
|       < WORD: (<LETTER>)+ >
|	< #LETTER: ["_", "@", ".", "a"-"z", "A"-"Z", "0"-"9", ":", "/"] >
}

String command():
{	
	String commandName = "";
	Token token;
}
{
	token = <WORD> (<PARAMSTART> <WORD> <WORD> | <PARAMSTART> <WORD>)+
	{
		commandName = token.image;
		return commandName;
	}
      | token = <WORD>
      	{
		commandName = token.image;
		return commandName;
	}
}

java.util.Hashtable parameters():
{
	java.util.Hashtable p = new java.util.Hashtable();
	int index = 0;
	String ps[][] = new String[100][2];
	Token t;
}
{
	t=<WORD>  
	( <PARAMSTART>
	  t = <WORD>
	  	{ ps[index][0]=t.image; }
	  t = <WORD>
	  	{ ps[index++][1]=t.image; }
	 
	 | <PARAMSTART>
	   t= <WORD>
	 	{ps[index++][0]=t.image;} 
	 )+
	 
	 	{for (int i = 0; i < index; i++){
			String pn = ps[i][0];
			String pv = "";
			if (ps[i][1] != null){
				pv = ps[i][1];
			}
			p.put(pn, pv);
		}
		return p;
		}
	| t = <WORD>
		{return p;}
}