grammar Mpf;

options {
  k = 1;
}

tokens {
    FILEEXISTSP = 'FileExistsP' ;
    FILECREATEDTODAYP = 'FileCreatedTodayP';
}

@members {

public static void main(String[] args) throws Exception {
    MpfLexer lex = new MpfLexer(new ANTLRFileStream(args[0]));
    CommonTokenStream tokens = new CommonTokenStream(lex);

       MpfParser parser = new MpfParser(tokens);

       try {
        parser.program ();
    } catch (RecognitionException e)  {
        e.printStackTrace();
    }
}
}

/*------------------------------------------------------------------
 * PARSER RULES
 *------------------------------------------------------------------*/

program	: (command)*
;

command	: FILEEXISTSP 'filename=' param {System.out.println("FileExistsP gefunden. param ist " + $param.text );}
	| FILECREATEDTODAYP 'filename=' param {System.out.println("FileCreatedTodayP gefunden. param ist " + $param.text );}
;

param	: STRING
;

/*------------------------------------------------------------------
 * LEXER RULES
 *------------------------------------------------------------------*/
 
NUMBER  : (DIGIT)+ ;
 
WHITESPACE : ( '\t' | ' ' | '\r' | '\n'| '\u000C' )+    { $channel = HIDDEN; } ;
 
fragment DIGIT  : '0'..'9' ;

COMMENT
    :   '//' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;}
    |   '/*' ( options {greedy=false;} : . )* '*/' {$channel=HIDDEN;}
    ;

STRING
    :  '"' ( ESC_SEQ | ~('\\'|'"') )* '"'
    ;

fragment
HEX_DIGIT : ('0'..'9'|'a'..'f'|'A'..'F') ;

fragment
ESC_SEQ
    :   '\\' ('b'|'t'|'n'|'f'|'r'|'\"'|'\''|'\\')
    |   UNICODE_ESC
    |   OCTAL_ESC
    ;

fragment
OCTAL_ESC
    :   '\\' ('0'..'3') ('0'..'7') ('0'..'7')
    |   '\\' ('0'..'7') ('0'..'7')
    |   '\\' ('0'..'7')
    ;

fragment
UNICODE_ESC
    :   '\\' 'u' HEX_DIGIT HEX_DIGIT HEX_DIGIT HEX_DIGIT
    ;