{"header":{"message":"use pawnMove() as a separate function, bugfixes","description":null,"timestamp":"2023-01-07T10:08:40.029310755Z","authors":[{}]},"hash":"7SQSGQOZRCHN3GGWPNFI36K2R7YZMOPXZP3FP4PYDDOZML5YIYOQC","authors":[{"login":"voroskoi","key":"Guf8VYJNUiWAqxwLxDSKxmvvtY65ht2zK2q4h6VhxrcZ"}],"deps":{"hashes":[["7SQSGQOZRCHN3GGWPNFI36K2R7YZMOPXZP3FP4PYDDOZML5YIYOQC","use pawnMove() as a separate function, bugfixes"],["AA",null],["IBUD4SUGA4IS6HUQIHVJJOFS4CMTWJMTMXS4LWGFVK4PFUFKE5LAC","Add queen attacks"],["XCZABYMDLHLHXNTHZFCXPNP6VOCNYUROAQACE5SWBL5FJK2EB7WQC","Initial generateMoves()"],["TDHJSFFSJZBEZFMDHPLRSVB6CIVJ7AWGGNIC3WUCADQLQSIQKXDAC","Add magic number generator"],["ET37VV7TCQDN6RWF46EUJB6EPNSDOX5TI25NW4P4H5HI4VOTARZQC","Add Rook attack table"],["7T5U3ARTEEAORKCSJY763X5TJRGHCEQK3OW323YO5CZIM77EH77AC","Add Game struct with initial bitboards setup"],["3MEBL2ZUY2LI5LW6MK6B32F62TSVF46QVNIDB3Y4OWLAN4NT7KTAC","Add side, enpassant and castling info to 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| DELETED","from":{"change":4,"pos":3794},"to":{"change":4,"start":3794,"end":3884},"introduced_by":4}],"inode":{"change":4,"pos":204}},"ins_contents":[{"Add":" const occupancy_idx = @as(Chess.BoardType, 1) << @intCast(Chess.SquareType, relevant_bits);"}],"del_contents":[{"Del":" const occupancy_idx = @as(Chess.BoardType, 1) << @intCast(u6, relevant_bits);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":52,"ins":{"up_context":[{"change":4,"pos":4348}],"down_context":[{"change":4,"pos":4440}],"flag":"BLOCK","start":105,"end":211,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":4348},"to":{"change":4,"start":4348,"end":4440},"introduced_by":4}],"inode":{"change":4,"pos":204}},"ins_contents":[{"Add":" @intCast(Chess.SquareType, @as(u7, 64) - bishop_relevant_bits[square.int()]);"}],"del_contents":[{"Del":" @intCast(u6, @as(u7, 64) - bishop_relevant_bits[square.int()]);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":62,"ins":{"up_context":[{"change":4,"pos":4946}],"down_context":[{"change":4,"pos":5036}],"flag":"BLOCK","start":212,"end":316,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":4946},"to":{"change":4,"start":4946,"end":5036},"introduced_by":4}],"inode":{"change":4,"pos":204}},"ins_contents":[{"Add":" @intCast(Chess.SquareType, @as(u7, 64) - rook_relevant_bits[square.int()]);"}],"del_contents":[{"Del":" @intCast(u6, @as(u7, 64) - rook_relevant_bits[square.int()]);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":79,"ins":{"up_context":[{"change":2,"pos":181}],"down_context":[{"change":4,"pos":5667}],"flag":"BLOCK","start":317,"end":421,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":2,"pos":181},"to":{"change":4,"start":5577,"end":5667},"introduced_by":2},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":5577},"to":{"change":4,"start":5577,"end":5667},"introduced_by":4}],"inode":{"change":4,"pos":204}},"ins_contents":[{"Add":" mut_occupancy >>= @intCast(Chess.SquareType, @as(u7, 64) - bishop_relevant_bits[square.int()]);"}],"del_contents":[{"Del":" mut_occupancy >>= @intCast(u6, @as(u7, 64) - bishop_relevant_bits[square.int()]);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":90,"ins":{"up_context":[{"change":2,"pos":286}],"down_context":[{"change":4,"pos":6105}],"flag":"BLOCK","start":422,"end":524,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":2,"pos":286},"to":{"change":4,"start":6017,"end":6105},"introduced_by":2},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":6017},"to":{"change":4,"start":6017,"end":6105},"introduced_by":4}],"inode":{"change":4,"pos":204}},"ins_contents":[{"Add":" mut_occupancy >>= @intCast(Chess.SquareType, @as(u7, 64) - rook_relevant_bits[square.int()]);"}],"del_contents":[{"Del":" mut_occupancy >>= @intCast(u6, @as(u7, 64) - rook_relevant_bits[square.int()]);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":376,"ins":{"up_context":[{"change":4,"pos":7262}],"down_context":[{"change":4,"pos":7320}],"flag":"BLOCK","start":525,"end":597,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":7262},"to":{"change":4,"start":7262,"end":7320},"introduced_by":4}],"inode":{"change":4,"pos":204}},"ins_contents":[{"Add":" const s = @intCast(Chess.SquareType, dr * Chess.SIZE + df);"}],"del_contents":[{"Del":" const s = @intCast(u6, dr * Chess.SIZE + df);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":419,"ins":{"up_context":[{"change":4,"pos":977}],"down_context":[{"change":4,"pos":1486}],"flag":"BLOCK","start":598,"end":670,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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0;\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":477,"ins":{"up_context":[{"change":4,"pos":288}],"down_context":[{"change":4,"pos":331}],"flag":"BLOCK","start":709,"end":774,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":288},"to":{"change":4,"start":2509,"end":2560},"introduced_by":4}],"inode":{"change":4,"pos":204}},"ins_contents":[{"Add":" const square = @intCast(Chess.SquareType, @ctz(attack));"}],"del_contents":[{"Del":" const square = @intCast(u6, @ctz(attack));\n"}]}},{"Replacement":{"inode":{"change":4,"pos":204},"path":"src/attacks.zig","line":594,"ins":{"up_context":[{"change":4,"pos":3932}],"down_context":[{"change":4,"pos":4032}],"flag":"BLOCK","start":775,"end":889,"inode":{"change":4,"pos":204}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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@enumToInt(self));\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":103,"ins":{"up_context":[{"change":4,"pos":1}],"down_context":[{"change":4,"pos":42}],"flag":"BLOCK","start":1056,"end":1105,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":1},"to":{"change":4,"start":1,"end":42},"introduced_by":4}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" fn set(self: *@This(), s: SquareType) void {"}],"del_contents":[{"Del":" fn set(self: *@This(), s: u6) void {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":127,"ins":{"up_context":[{"change":4,"pos":10288}],"down_context":[{"change":4,"pos":4238}],"flag":"BLOCK","start":1106,"end":1179,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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file);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":202,"ins":{"up_context":[{"change":4,"pos":757}],"down_context":[{"change":4,"pos":809}],"flag":"BLOCK","start":1254,"end":1322,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":757},"to":{"change":4,"start":757,"end":809},"introduced_by":4}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" var rank: SquareType = 0;"},{"Add":" var file: SquareType = 0;"}],"del_contents":[{"Del":" var rank: u6 = 0;\n var file: u6 = 0;\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":217,"ins":{"up_context":[{"change":4,"pos":1226}],"down_context":[{"change":4,"pos":1313}],"flag":"BLOCK","start":1323,"end":1418,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":1226},"to":{"change":4,"start":1226,"end":1313},"introduced_by":4}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" file += try std.fmt.parseUnsigned(SquareType, in[idx .. idx + 1], 10) - 1;"}],"del_contents":[{"Del":" file += try std.fmt.parseUnsigned(u6, in[idx .. idx + 1], 10) - 1;\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":280,"ins":{"up_context":[{"change":4,"pos":3976}],"down_context":[{"change":4,"pos":4070}],"flag":"BLOCK","start":1419,"end":1521,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":3976},"to":{"change":4,"start":3976,"end":4070},"introduced_by":4}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" const r = SIZE - @intCast(SquareType, try std.fmt.parseUnsigned(u3, enpassant[1..], 10));"}],"del_contents":[{"Del":" const r = SIZE - @intCast(u6, try std.fmt.parseUnsigned(u3, enpassant[1..], 10));\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":351,"ins":{"up_context":[{"change":3,"pos":1}],"down_context":[{"change":3,"pos":200}],"flag":"BLOCK","start":1522,"end":1609,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1},"to":{"change":3,"start":1,"end":200},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" fn generateMoves(self: @This()) void {"},{"Add":" const pieces = switch (self.side) {"}],"del_contents":[{"Del":" fn generateMoves(self: @This(), color: Colors) void {\n var source_square: BoardType = undefined;\n var target_square: BoardType = undefined;\n\n const pieces = switch (color) {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":358,"ins":{"up_context":[{"change":3,"pos":355}],"down_context":[{"change":3,"pos":429}],"flag":"BLOCK","start":1610,"end":1686,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":355},"to":{"change":3,"start":355,"end":429},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" const board = @bitCast(BoardType, self.bitboards[piece.int()]);"}],"del_contents":[{"Del":" var board = @bitCast(BoardType, self.bitboards[piece.int()]);\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":362,"ins":{"up_context":[{"change":3,"pos":507}],"down_context":[{"change":3,"pos":785}],"flag":"BLOCK","start":1687,"end":2516,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":507},"to":{"change":3,"start":507,"end":785},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" .P, .p => self.pawnMoves(board),"},{"Add":" else => {},"},{"Add":" }"},{"Add":" }"},{"Add":""},{"Add":" // generate move for rest of pieces"},{"Add":" }"},{"Add":""},{"Add":" fn pawnMoves(self: @This(), board_in: BoardType) void {"},{"Add":" var source_square: SquareType = undefined;"},{"Add":" var target_square: SquareType = undefined;"},{"Add":""},{"Add":" var board = board_in;"},{"Add":" while (board != 0) {"},{"Add":" source_square = @intCast(SquareType, @ctz(board));"},{"Add":" // std.debug.print(\"pawn: {any}\\n\", .{@intToEnum(Square, source_square)});"},{"Add":""},{"Add":" // early exit on underflow/overflow"},{"Add":" switch (self.side) {"},{"Add":" .white => if (@subWithOverflow(SquareType, source_square, 8, &target_square)) continue,"},{"Add":" .black => if (@addWithOverflow(SquareType, source_square, 8, &target_square)) continue,"},{"Add":" }"}],"del_contents":[{"Del":" .P, .p => {\n while (board != 0) {\n const s = @intCast(u6, @ctz(board));\n source_square = @as(BoardType, 1) << s;\n std.debug.print(\"pawn: {any}\\n\", .{@intToEnum(Square, s)});\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":385,"ins":{"up_context":[{"change":3,"pos":786}],"down_context":[{"change":3,"pos":1184}],"flag":"BLOCK","start":2517,"end":2849,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":786},"to":{"change":3,"start":786,"end":1184},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" const promote_condition = switch (self.side) {"},{"Add":" .white => source_square >= @enumToInt(Square.a7) and"},{"Add":" source_square <= @enumToInt(Square.h7),"},{"Add":" .black => source_square >= @enumToInt(Square.a2) and"},{"Add":" source_square <= @enumToInt(Square.h2),"},{"Add":" };"}],"del_contents":[{"Del":" // early exit on underflow/overflow\n switch (piece) {\n .P => if (@subWithOverflow(BoardType, source_square, 8, &target_square)) continue,\n .p => if (@addWithOverflow(BoardType, source_square, 8, &target_square)) continue,\n else => unreachable,\n }\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":392,"ins":{"up_context":[{"change":3,"pos":1185}],"down_context":[{"change":3,"pos":2417}],"flag":"BLOCK","start":2850,"end":4146,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1185},"to":{"change":3,"start":1185,"end":2417},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" // generate quiet moves"},{"Add":" if (self.occupBoth() & (@as(BoardType, 1) << target_square) == 0) {"},{"Add":" const double_step_condition = switch (self.side) {"},{"Add":" .white => source_square >= @enumToInt(Square.a2) and"},{"Add":" source_square <= @enumToInt(Square.h2) and"},{"Add":" self.occupBoth() & (@as(BoardType, 1) << (target_square - 8)) == 0,"},{"Add":" .black => source_square >= @enumToInt(Square.a7) and"},{"Add":" source_square <= @enumToInt(Square.h7) and"},{"Add":" self.occupBoth() & (@as(BoardType, 1) << (target_square + 8)) == 0,"},{"Add":" };"},{"Add":""},{"Add":" if (promote_condition) {"},{"Add":" for ([_]u8{ 'q', 'r', 'b', 'n' }) |prom| {"},{"Add":" std.debug.print(\"pawn promotions {any}->{any}{c}\\n\", .{"},{"Add":" @intToEnum(Square, source_square),"},{"Add":" @intToEnum(Square, target_square),"},{"Add":" prom,"},{"Add":" });"},{"Add":" }"},{"Add":" } else {"},{"Add":" std.debug.print(\"pawn push: {any}->{any}\\n\", .{"},{"Add":" @intToEnum(Square, source_square),"},{"Add":" @intToEnum(Square, target_square),"},{"Add":" });"}],"del_contents":[{"Del":" // generate quiet pawn moves\n if (self.occupBoth() & target_square == 0) {\n const promote_condition = switch (piece) {\n .P => source_square >= @enumToInt(Square.a7) and\n source_square <= @enumToInt(Square.h7),\n .p => source_square >= @enumToInt(Square.a2) and\n source_square <= @enumToInt(Square.h2),\n else => unreachable,\n };\n const double_step_condition = switch (piece) {\n .P => source_square >= @enumToInt(Square.a2) and\n source_square <= @enumToInt(Square.h2) and\n self.occupBoth() & (target_square - 8) == 0,\n .p => source_square >= @enumToInt(Square.a7) and\n source_square <= @enumToInt(Square.h7) and\n self.occupBoth() & (target_square + 8) == 0,\n else => unreachable,\n };\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":417,"ins":{"up_context":[{"change":3,"pos":2418}],"down_context":[{"change":3,"pos":2624}],"flag":"BLOCK","start":4147,"end":4772,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2418},"to":{"change":3,"start":2418,"end":2624},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" // TODO: check: if single step is no-go, double can not work"},{"Add":" if (double_step_condition) {"},{"Add":" const double_target = switch (self.side) {"},{"Add":" .white => target_square - 8,"},{"Add":" .black => target_square + 8,"},{"Add":" };"},{"Add":" std.debug.print(\"pawn push double: {any}->{any}\\n\", .{"},{"Add":" @intToEnum(Square, source_square),"},{"Add":" @intToEnum(Square, double_target),"},{"Add":" });"},{"Add":" }"},{"Add":" }"},{"Add":" }"}],"del_contents":[{"Del":" if (promote_condition) {\n // TODO: add move to move list\n } else {\n // TODO: single step\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":431,"ins":{"up_context":[{"change":3,"pos":2625}],"down_context":[{"change":3,"pos":2883}],"flag":"BLOCK","start":4773,"end":5212,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2625},"to":{"change":3,"start":2625,"end":2883},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" // generate attacks"},{"Add":" const other = switch (self.side) {"},{"Add":" .white => Colors.black,"},{"Add":" .black => Colors.white,"},{"Add":" };"},{"Add":" var attacks ="},{"Add":" self.attacks.pawn_attacks[@enumToInt(self.side)][source_square] &"},{"Add":" self.occupancies[@enumToInt(other)];"},{"Add":" while (attacks != 0) {"},{"Add":" target_square = @intCast(SquareType, @ctz(attacks));"}],"del_contents":[{"Del":" // TODO: double step\n // FIXME: if single step is no-go, double can not work\n if (double_step_condition) {}\n }\n }\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":442,"ins":{"up_context":[{"change":3,"pos":2884}],"down_context":[{"change":3,"pos":2985}],"flag":"BLOCK","start":5213,"end":5592,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2884},"to":{"change":3,"start":2884,"end":2985},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" if (promote_condition) {"},{"Add":" for ([_]u8{ 'q', 'r', 'b', 'n' }) |prom| {"},{"Add":" std.debug.print(\"pawn promotion attacks {any}->{any}{c}\\n\", .{"},{"Add":" @intToEnum(Square, source_square),"},{"Add":" @intToEnum(Square, target_square),"},{"Add":" prom,"},{"Add":" });"}],"del_contents":[{"Del":" // pop least significant bit\n board ^= source_square;\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":450,"ins":{"up_context":[{"change":3,"pos":3007}],"down_context":[{"change":3,"pos":3054}],"flag":"BLOCK","start":5593,"end":5958,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3007},"to":{"change":3,"start":3007,"end":3054},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" } else {"},{"Add":" std.debug.print(\"pawn attack: {any} -> {any}\\n\", .{"},{"Add":" @intToEnum(Square, source_square),"},{"Add":" @intToEnum(Square, target_square),"},{"Add":" });"},{"Add":" }"},{"Add":""},{"Add":" // pop processed attack bit"},{"Add":" attacks ^= @as(BoardType, 1) << target_square;"}],"del_contents":[{"Del":" },\n else => {},\n"}]}},{"Edit":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":460,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3068},"to":{"change":3,"start":3068,"end":3078},"introduced_by":3}],"inode":{"change":4,"pos":7502}}},"contents":[{"Del":" }\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":461,"ins":{"up_context":[{"change":3,"pos":3079}],"down_context":[{"change":4,"pos":4161}],"flag":"BLOCK","start":5959,"end":6217,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3079},"to":{"change":3,"start":3079,"end":3129},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":4,"pos":2917},"to":{"change":4,"start":3555,"end":3558},"introduced_by":4},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3129},"to":{"change":4,"start":3555,"end":3558},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":3555},"to":{"change":4,"start":3555,"end":3558},"introduced_by":4}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" // generate enpassant captures"},{"Add":" if (self.enpassant != null) {"},{"Add":" const enpassant_attacks = self.attacks.pawn_attacks[@enumToInt(self.side)][source_square] &"},{"Add":" @as(BoardType, 1) << self.enpassant.?.int();"}],"del_contents":[{"Del":" // generate move for rest of pieces\n }\n"},{"Del":"};\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":466,"ins":{"up_context":[{"change":4,"pos":4162}],"down_context":[{"change":4,"pos":3558}],"flag":"BLOCK","start":6218,"end":6618,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":4162},"to":{"change":4,"start":4162,"end":4612},"introduced_by":4}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" if (enpassant_attacks != 0) {"},{"Add":" const target_enpassant: SquareType = @intCast(u6, @ctz(enpassant_attacks));"},{"Add":" std.debug.print(\"pawn enpassant capture: {any}->{any}\\n\", .{"},{"Add":" @intToEnum(Square, source_square),"},{"Add":" @intToEnum(Square, target_enpassant),"},{"Add":" });"},{"Add":" }"},{"Add":" }"}],"del_contents":[{"Del":"test \"parseFEN\" {\n const empty_board = \"8/8/8/8/8/8/8/8 w - -\";\n const start_position = \"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\";\n const tricky_position = \"r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 1\";\n const killer_position = \"rnbqkb1r/pp1p1pPp/8/2p1pP2/1P1P4/3P3P/P1P1P3/RNBQKBNR w KQkq e6 0 1\";\n const cmk_position = \"r2q1rk1/ppp2ppp/2n1bn2/2b1p3/3pP3/3P1NPP/PPP1NPB1/R1BQ1RK1 b - - 0 9\";\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":475,"ins":{"up_context":[{"change":4,"pos":3559}],"down_context":[{"change":4,"pos":4857}],"flag":"BLOCK","start":6619,"end":6734,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":3559},"to":{"change":4,"start":4613,"end":4857},"introduced_by":4}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" // pop processed board bit"},{"Add":" board ^= @as(BoardType, 1) << source_square;"},{"Add":" }"},{"Add":" }"},{"Add":"};"}],"del_contents":[{"Del":" var game = Game{ .attacks = Attacks.init() };\n try game.parseFEN(empty_board);\n try game.parseFEN(start_position);\n try game.parseFEN(tricky_position);\n try game.parseFEN(killer_position);\n try game.parseFEN(cmk_position);\n}\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":495,"ins":{"up_context":[{"change":3,"pos":3204}],"down_context":[{"change":3,"pos":3299}],"flag":"BLOCK","start":6735,"end":6832,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3204},"to":{"change":3,"start":3204,"end":3299},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" try game.parseFEN(\"r3k2r/p11pqpbp/bn2pnp1/2pPN3/1p2P3/2N2Q1p/PPPBBPpP/R3K2R b KQkq c6 0 1\");"}],"del_contents":[{"Del":" try game.parseFEN(\"r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 1\");\n"}]}},{"Replacement":{"inode":{"change":4,"pos":7502},"path":"src/Chess.zig","line":499,"ins":{"up_context":[{"change":3,"pos":3318}],"down_context":[{"change":3,"pos":3353}],"flag":"BLOCK","start":6833,"end":6859,"inode":{"change":4,"pos":7502}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3318},"to":{"change":3,"start":3318,"end":3353},"introduced_by":3}],"inode":{"change":4,"pos":7502}},"ins_contents":[{"Add":" game.generateMoves();"}],"del_contents":[{"Del":" game.generateMoves(game.side);\n"}]}}],"owner":"voroskoi","repo":"pistike","token":"U1K3M2zBJOPawaTTK5r/vgAot74Tcxjrcbi/797f3wA=","login":null}

…

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