grammar csce322a01part01;

// rules
extremePegSolitaire: validGame validMoves endOfFile EOF | validMoves validGame endOfFile EOF | error;
validGame: gameTitle sectionBeginning gameStart validBoard gameEnd sectionEnding;
validMoves: movesTitle sectionBeginning movesStart validMovelist movesEnd sectionEnding;
validBoard: nonFinalRow+ validRow;
validRow: trueGameSymbol+;
nonFinalRow: validRow rowEnd;
validMovelist: moveSymbol+;

//tokens as rules
gameTitle: GAME_TITLE{
    System.out.println("game Section");
    };
movesTitle: MOVES_TITLE{
    System.out.println("moves Section");
    };
sectionBeginning: SECTION_BEGINNING{
    System.out.println("Begin the Section");
    };
sectionEnding: SECTION_ENDING{
    System.out.println("End the Section");
    };
gameStart: GAME_START{
    System.out.println("Start the Game");
    };
gameEnd: GAME_END{
    System.out.println("End the Game");
    };
movesStart: MOVES_START{
    System.out.println("Begin the List");
    };
movesEnd: MOVES_END{
    System.out.println("End the List");
    };
moveSymbol: MOVE_SYMBOL COMMAS*{
    System.out.println("Move: " + $MOVE_SYMBOL.text);
    };
gameSymbol: GAME_SYMBOL{
    System.out.println("Space: " + $GAME_SYMBOL.text);
    };
emptySpace: EMPTY_SPACE{
    System.out.println("Space: Empty");
    };
rowEnd: ROW_END{
    System.out.println("End the Row");
    };
endOfFile:{
    System.out.println("End the File");
    };
error: ERROR{System.out.println("SYNTAX ERROR IN LINE " + $ANYTHING.line); System.exit(0);};
trueGameSymbol: emptySpace | gameSymbol;

// tokens
GAME_TITLE: '!game';
MOVES_TITLE: '!moves';
SECTION_BEGINNING: '>>';
SECTION_ENDING: '<<';
GAME_START: '{';
GAME_END: '}';
MOVES_START: '^';
MOVES_END: '$';
MOVE_SYMBOL: 'u'|'d'|'l'|'r';
GAME_SYMBOL: 'x'|[0-9]+;
EMPTY_SPACE: '-';
ROW_END: '*';
COMMAS: ',';
WHITE_SPACE: [ \t\r\n]+ -> skip;
ERROR: .;