/*
 * L9Script.g - ANTLR grammar for Level9.net script files.
 * 
 * Copyright (C) 2004 - 2011 Andreas Scherrer
 *
 * This 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.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
 * USA.
 */
 
lexer grammar L9Script;

options {
    language = CSharp2;
}

@header {
using System.Text;
using Level9;
}

@members {
string format(string text)
{
    StringBuilder builder = new StringBuilder(text);
    builder.Replace("\t",   " ");
    builder.Replace("\r\n", " ");
    builder.Replace("\n",   " ");
    return builder.ToString().Trim();
}

public override void ReportError(RecognitionException e) 
{
	Script.Instance.Errors.Add(new LexerError(
		this.GetErrorMessage(e, this.TokenNames),
		e.Line, e.CharPositionInLine));
}
}

TITLE
    : '#' WS* ('title'|'Title'|'TITLE') WS* ':' t = HEADER_TEXT ';' {
        if (t != null) {   
            Script.Instance.Title = format(t.Text);
        }
    }
    ;
    
COMMENT
    : '#' WS* ('comment'|'Comment'|'COMMENT') WS* ':' t = HEADER_TEXT ';' {
        if (t != null) {   
            Script.Instance.Comment = format(t.Text);
        }
    }
    ;

COMMAND
    : t = COMMAND_TEXT ('[' n = NOTE_TEXT ']')? WS* ';' {
        if (t != null) {
            Script.Instance.AddEntry(new ScriptEntry(format(t.Text), 
                (n != null ? format(n.Text) : null)));
        }
    }
    ; 

fragment HEADER_TEXT
    : (~';')*
    ;   
   
fragment COMMAND_TEXT
    : (~( WS |'['|';')) (~('['|';'))*
    ;

fragment NOTE_TEXT
    : (~']')*
    ;

WS  
    : ('\r'|'\t'|'\u000C'|'\n'|' ')
    ;