voroskoi/pistike - Change LWF4H4TMNZYUKTCVDALXQLBE3U5AXQJ3LLNUJJ7YGTLG6T2O33JAC

Add parsePosition method

Created by voroskoi on January 18, 2023

LWF4H4TMNZYUKTCVDALXQLBE3U5AXQJ3LLNUJJ7YGTLG6T2O33JAC

Dependencies

In channels

main

Change contents

Insertion in src/Board.zig at line 277 [3.16071]

[2.141]


    fn parsePosition(self: *@This(), in: Str) !void {
        var words = std.mem.tokenize(u8, in, " ");
        if (words.next()) |position| {
            if (position[0] != 'p') {
                return error.InvalidPosition;
            }
        } else return error.InvalidPosition;

Replacement in src/Board.zig at line 286 [3.16071]

B:BD[2.142] → [2.142:202]

    fn parseMove(self: *const @This(), in: Str) !?BitMove {

[2.142]

[2.202]

        if (words.next()) |start| {
            switch (start[0]) {
                's' => {
                    // startpos
                    try self.parseFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1");
                },
                'f' => {
                    // fen
                    const end = std.mem.indexOf(u8, in, "moves");
                    if (end) |e| {
                        try self.parseFEN(in[13 .. e - 1]);
                        for ([_]u3{ 0, 1, 2, 3, 4, 5 }) |_| {
                            _ = words.next();
                        }
                    } else {
                        try self.parseFEN(in[13..]);
                        return;
                    }
                },
                else => return error.InvalidPosition,
            }
        } else return error.InvalidPosition;
        if (words.next()) |moves| {
            if (moves[0] != 'm') return error.InvalidPosition;
            while (words.next()) |move| {
                const m = try self.parseMove(move);
                _ = self.makeMove(m, .all);
            }
        }
    }
    fn parseMove(self: @This(), in: Str) !BitMove {

Replacement in src/Board.zig at line 350 [3.16071]
B:BD[2.1461] → [2.1461:1482]
```
        return null;
```
[2.1461]
[3.23130]
```
        return error.IllegalMove;
```

Replacement in src/Board.zig at line 1000 [3.16071]

B:BD[2.2254] → [2.2254:2272]

    // gs.show();

[2.2254]

[2.2272]

    {
        // gs.show();
        const got = try gs.parseMove("d7c8B");
        try std.testing.expectEqual(Square.d7, got.source);
        try std.testing.expectEqual(Square.c8, got.target);
        try std.testing.expectEqual(Chess.PE.B, got.prom);
        try std.testing.expectEqual(true, got.capture);
        try std.testing.expectEqual(Chess.PE.P, got.piece);
        // _ = gs.makeMove(got, .all);
        // gs.show();
    }
    {
        // gs.show();
        const got = gs.parseMove("d7d8");
        try std.testing.expectError(error.IllegalMove, got);
    }
}
test "UCI - parsePosition" {
    var gs = try GameState.init(null);

Replacement in src/Board.zig at line 1026 [3.16071]

B:BD[2.2273] → [2.2273:2316]

    const got = try gs.parseMove("d7c8B");

[2.2273]

[2.2316]

    {
        try gs.parsePosition("position startpos");
        // gs.show();
    }

Replacement in src/Board.zig at line 1031 [3.16071]

B:BD[2.2317] → [2.2317:2602]

    try std.testing.expectEqual(Square.d7, got.?.source);
    try std.testing.expectEqual(Square.c8, got.?.target);
    try std.testing.expectEqual(Chess.PE.B, got.?.prom);
    try std.testing.expectEqual(true, got.?.capture);
    try std.testing.expectEqual(Chess.PE.P, got.?.piece);

[2.2317]

[2.2602]

    {
        try gs.parsePosition("position startpos moves e2e4 e7e5");
        // gs.show();
    }

Replacement in src/Board.zig at line 1036 [3.16071]

B:BD[2.2603] → [2.2603:2640]

    // _ = gs.makeMove(got.?, .all);

[2.2603]

[2.2640]

    {
        try gs.parsePosition("position fen 8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - -");
        // gs.show();
    }

Replacement in src/Board.zig at line 1041 [3.16071]

B:BD[2.2641] → [2.2641:2659]

    // gs.show();

[2.2641]

[2.2659]

    {
        try gs.parsePosition("position fen 8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1 moves g2g4 c7c5");
        // gs.show();
    }