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POC: add binary FEN support #1175

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POC: add binary FEN support #1175

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544 changes: 544 additions & 0 deletions chess/binary_fen.py
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27 changes: 27 additions & 0 deletions fuzz/binary_fen.py
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import chess.binary_fen
from chess.binary_fen import BinaryFen

from pythonfuzz.main import PythonFuzz


@PythonFuzz
def fuzz(buf):
binary_fen = BinaryFen.parse_from_bytes(buf)
try:
board, std_mode = binary_fen.to_board()
except ValueError:
pass
else:
board.status()
list(board.legal_moves)
binary_fen2 = BinaryFen.parse_from_board(board,std_mode=std_mode)
encoded = binary_fen2.to_bytes()
board2, std_mode2 = BinaryFen.decode(encoded)
assert board == board2
assert binary_fen2 == binary_fen2.to_canonical(), "from_board should be canonical"
assert binary_fen.to_canonical() == binary_fen2.to_canonical()
assert std_mode == std_mode2


if __name__ == "__main__":
fuzz()
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/000-std
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0000000000000000
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/001-std
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00000000000000000001
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/002-std
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000000000000000064df06
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/003-std
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ffff00001000efff2d844ad200000000111111113e955fe3
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/004-std
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20400006400000080ac0b1
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/005-std
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1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/006-std
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00000002180000308a1c0f030103
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/007-koth
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ffff00000000ffff2d844ad200000000111111113e955be3000004
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/008-3c
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ffff00000000ffff2d844ad200000000111111113e955be363000501
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/009-anti
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00800000000008001a000106
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/010-atom
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ffff00000000ffff2d844ad200000000111111113e955be3020407
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/011-hord
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ffff0066ffffffff000000000000000000000000000000000000111111113e955be3000008
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/012-rk
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000000000000ffff793542867b3542a6000009
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/013-zh
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ffff00000000ffff2d844ad200000000111111113e955be300e407010000000000ef0000000000002a
1 change: 1 addition & 0 deletions fuzz/corpus/binary_fen/014-z
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ffff00000000ffff2d844ad200000000111111113e955be30000010000000000
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