canMoveGap() public method

public canMoveGap ( System.Action where ) : bool
where System.Action
return bool
            public HashSet <Action> actions(Object state)
            {
                EightPuzzleBoard board = (EightPuzzleBoard)state;

                HashSet <Action> actions = new LinkedHashSet <Action>();

                if (board.canMoveGap(EightPuzzleBoard.UP))
                {
                    actions.Add(EightPuzzleBoard.UP);
                }
                if (board.canMoveGap(EightPuzzleBoard.DOWN))
                {
                    actions.Add(EightPuzzleBoard.DOWN);
                }
                if (board.canMoveGap(EightPuzzleBoard.LEFT))
                {
                    actions.Add(EightPuzzleBoard.LEFT);
                }
                if (board.canMoveGap(EightPuzzleBoard.RIGHT))
                {
                    actions.Add(EightPuzzleBoard.RIGHT);
                }

                return(actions);
            }
            public Object result(Object s, Action a)
            {
                EightPuzzleBoard board = (EightPuzzleBoard)s;

                if (EightPuzzleBoard.UP.Equals(a) &&
                    board.canMoveGap(EightPuzzleBoard.UP))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapUp();
                    return(newBoard);
                }
                else if (EightPuzzleBoard.DOWN.Equals(a) &&
                         board.canMoveGap(EightPuzzleBoard.DOWN))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapDown();
                    return(newBoard);
                }
                else if (EightPuzzleBoard.LEFT.Equals(a) &&
                         board.canMoveGap(EightPuzzleBoard.LEFT))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapLeft();
                    return(newBoard);
                }
                else if (EightPuzzleBoard.RIGHT.Equals(a) &&
                         board.canMoveGap(EightPuzzleBoard.RIGHT))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapRight();
                    return(newBoard);
                }

                // The Action is not understood or is a NoOp
                // the result will be the current state.
                return(s);
            }