420 lines
10 KiB
Python
420 lines
10 KiB
Python
import enum
|
|
|
|
import gdb
|
|
import gdb.printing
|
|
|
|
|
|
def optional(constructor, val):
|
|
try:
|
|
return constructor(val["Some"]["__0"])
|
|
except gdb.error:
|
|
return None
|
|
|
|
|
|
def print_opt(val):
|
|
return "(None)" if val is None else str(val)
|
|
|
|
|
|
class Square(object):
|
|
"""
|
|
Python representation of a 'seer::board::square::Square' raw value.
|
|
"""
|
|
|
|
FILES = list(map(lambda n: chr(ord("A") + n), range(8)))
|
|
RANKS = list(map(lambda n: str(n + 1), range(8)))
|
|
|
|
def __init__(self, val):
|
|
if isinstance(val, Square):
|
|
val = val._val
|
|
self._val = val
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(int(val))
|
|
|
|
@classmethod
|
|
def from_file_rank(cls, file, rank):
|
|
return cls(file * 8 + rank)
|
|
|
|
def __str__(self):
|
|
return self.FILES[self.file] + self.RANKS[self.rank]
|
|
|
|
@property
|
|
def rank(self):
|
|
return int(self._val) % 8
|
|
|
|
@property
|
|
def file(self):
|
|
return int(self._val) // 8
|
|
|
|
|
|
class Bitboard(object):
|
|
"""
|
|
Python representation of a 'seer::board::bitboard::Bitboard' raw value.
|
|
"""
|
|
|
|
def __init__(self, val):
|
|
if isinstance(val, Bitboard):
|
|
val = val._val
|
|
self._val = val
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(int(val["__0"]))
|
|
|
|
def __str__(self):
|
|
return "[" + ", ".join(map(str, self.squares)) + "]"
|
|
|
|
def at(self, square):
|
|
return bool(self._val & (1 << square._val))
|
|
|
|
@property
|
|
def squares(self):
|
|
n = self._val
|
|
while n:
|
|
b = n & (~n + 1)
|
|
yield Square(b.bit_length() - 1)
|
|
n ^= b
|
|
|
|
|
|
class CastleRights(enum.IntEnum):
|
|
"""
|
|
Python representation of a 'seer::board::castle_rights::CastleRights' raw value.
|
|
"""
|
|
|
|
# Should be kept in sync with the enum in `color.rs`
|
|
NO_SIDE = 0
|
|
KING_SIDE = 1
|
|
QUEEN_SIDE = 2
|
|
BOTH_SIDES = 3
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(int(val))
|
|
|
|
def __str__(self):
|
|
return self.name.title().replace("_", "")
|
|
|
|
|
|
class Color(enum.IntEnum):
|
|
"""
|
|
Python representation of a 'seer::board::color::Color' raw value.
|
|
"""
|
|
|
|
# Should be kept in sync with the enum in `color.rs`
|
|
WHITE = 0
|
|
BLACK = 1
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(int(val))
|
|
|
|
def __str__(self):
|
|
return self.name.title()
|
|
|
|
|
|
class File(enum.IntEnum):
|
|
"""
|
|
Python representation of a 'seer::board::file::File' raw value.
|
|
"""
|
|
|
|
# Should be kept in sync with the enum in `file.rs`
|
|
A = 0
|
|
B = 1
|
|
C = 2
|
|
D = 3
|
|
E = 4
|
|
F = 5
|
|
G = 6
|
|
H = 7
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(int(val))
|
|
|
|
def __str__(self):
|
|
return self.name.title()
|
|
|
|
|
|
class Rank(enum.IntEnum):
|
|
"""
|
|
Python representation of a 'seer::board::rank::Rank' raw value.
|
|
"""
|
|
|
|
# Should be kept in sync with the enum in `rank.rs`
|
|
First = 0
|
|
Second = 1
|
|
Third = 2
|
|
Fourth = 3
|
|
Fifth = 4
|
|
Sixth = 5
|
|
Seventh = 6
|
|
Eighth = 7
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(int(val))
|
|
|
|
def __str__(self):
|
|
return self.name.title()
|
|
|
|
|
|
class Piece(enum.IntEnum):
|
|
"""
|
|
Python representation of a 'seer::board::piece::Piece' raw value.
|
|
"""
|
|
|
|
# Should be kept in sync with the enum in `piece.rs`
|
|
KING = 0
|
|
QUEEN = 1
|
|
ROOK = 2
|
|
BISHOP = 3
|
|
KNIGHT = 4
|
|
PAWN = 5
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(int(val))
|
|
|
|
def __str__(self):
|
|
return self.name.title()
|
|
|
|
|
|
class Move(object):
|
|
"""
|
|
Wrapper around GDB's representation of a 'seer::board::move::Move'
|
|
in memory.
|
|
"""
|
|
|
|
def __init__(self, start, destination, promotion):
|
|
self._start = Square(start)
|
|
self._destination = Square(destination)
|
|
self._promotion = Piece(promotion)
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
start = Square(int(val["start"]))
|
|
destination = Square(int(val["destination"]))
|
|
promotion = optional(Piece.from_gdb, val["promotion"])
|
|
cls(start, destination, promotion)
|
|
|
|
@property
|
|
def start(self):
|
|
return self._start
|
|
|
|
@property
|
|
def destination(self):
|
|
return self._destination
|
|
|
|
@property
|
|
def promotion(self):
|
|
return self._promotion
|
|
|
|
def __str__(self):
|
|
KEYS = [
|
|
"start",
|
|
"destination",
|
|
"promotion",
|
|
]
|
|
indent = lambda s: " " + s
|
|
|
|
values = [key + ": " + print_opt(getattr(self, key)) + ",\n" for key in KEYS]
|
|
return "Move{\n" + "".join(map(indent, values)) + "}"
|
|
|
|
|
|
class ChessBoard(object):
|
|
"""
|
|
Wrapper around GDB's representation of a 'seer::board::chess_board::ChessBoard'
|
|
in memory.
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
piece_occupancy,
|
|
color_occupancy,
|
|
castle_rights,
|
|
half_move_clock,
|
|
total_plies,
|
|
side,
|
|
en_passant,
|
|
):
|
|
self._piece_occupancy = list(map(Bitboard, piece_occupancy))
|
|
self._color_occupancy = list(map(Bitboard, color_occupancy))
|
|
self._castle_rights = list(map(CastleRights, castle_rights))
|
|
self._half_move_clock = int(half_move_clock)
|
|
self._total_plies = int(total_plies)
|
|
self._side = Color(side)
|
|
self._en_passant = None if en_passant is None else Square(en_passant)
|
|
|
|
@classmethod
|
|
def from_gdb(cls, val):
|
|
return cls(
|
|
[Bitboard.from_gdb(val["piece_occupancy"][p]) for p in Piece],
|
|
[Bitboard.from_gdb(val["color_occupancy"][c]) for c in Color],
|
|
[CastleRights.from_gdb(val["castle_rights"][c]) for c in Color],
|
|
int(val["half_move_clock"]),
|
|
int(val["total_plies"]),
|
|
Color.from_gdb(val["side"]),
|
|
optional(Square.from_gdb, val["en_passant"]),
|
|
)
|
|
|
|
def at(self, square):
|
|
for piece in Piece:
|
|
if not self._piece_occupancy[piece].at(square):
|
|
continue
|
|
for color in Color:
|
|
if not self._color_occupancy[color].at(square):
|
|
continue
|
|
return (piece, color)
|
|
return None
|
|
|
|
def pretty_str(self):
|
|
def pretty_piece(piece, color):
|
|
return [
|
|
("♚", "♔"),
|
|
("♛", "♕"),
|
|
("♜", "♖"),
|
|
("♝", "♗"),
|
|
("♞", "♘"),
|
|
("♟", "♙"),
|
|
][piece][color]
|
|
|
|
board = [
|
|
[self.at(Square.from_file_rank(file, rank)) for file in File]
|
|
for rank in Rank
|
|
]
|
|
|
|
res = []
|
|
res.append(" A B C D E F G H ")
|
|
for n, line in reversed(list(enumerate(board, start=1))):
|
|
strings = [str(n) + " "]
|
|
strings.extend(" " if p is None else pretty_piece(*p) for p in line)
|
|
strings.append(" " + str(n))
|
|
res.append("|".join(strings))
|
|
res.append(" A B C D E F G H ")
|
|
res += [
|
|
"Half-move clock: " + str(self._half_move_clock),
|
|
"Total plies: " + str(self._total_plies),
|
|
"Side to play: " + str(self._side),
|
|
"En passant: " + print_opt(self._en_passant),
|
|
]
|
|
return "\n".join(res)
|
|
|
|
|
|
class SquarePrinter(object):
|
|
"Print a seer::board::square::Square"
|
|
|
|
def __init__(self, val):
|
|
self._val = Square.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return str(self._val)
|
|
|
|
|
|
class BitboardPrinter(object):
|
|
"Print a seer::board::bitboard::Bitboard"
|
|
|
|
def __init__(self, val):
|
|
self._val = Bitboard.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return "Bitboard{" + str(self._val)[1:-1] + "}"
|
|
|
|
|
|
class CastleRightsPrinter(object):
|
|
"Print a seer::board::castle_rights::CastleRights"
|
|
|
|
def __init__(self, val):
|
|
self._val = CastleRights.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return str(self._val)
|
|
|
|
|
|
class ColorPrinter(object):
|
|
"Print a seer::board::color::Color"
|
|
|
|
def __init__(self, val):
|
|
self._val = Color.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return str(self._val)
|
|
|
|
|
|
class FilePrinter(object):
|
|
"Print a seer::board::file::File"
|
|
|
|
def __init__(self, val):
|
|
self._val = File.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return str(self._val)
|
|
|
|
|
|
class RankPrinter(object):
|
|
"Print a seer::board::rank::Rank"
|
|
|
|
def __init__(self, val):
|
|
self._val = Rank.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return str(self._val)
|
|
|
|
|
|
class PiecePrinter(object):
|
|
"Print a seer::board::piece::Piece"
|
|
|
|
def __init__(self, val):
|
|
self._val = Piece.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return str(self._val)
|
|
|
|
|
|
class MovePrinter(object):
|
|
"Print a seer::board::move::Move"
|
|
|
|
def __init__(self, val):
|
|
self._val = Move.from_gdb(val)
|
|
|
|
def to_string(self):
|
|
return str(self._val)
|
|
|
|
|
|
class PrintBoard(gdb.Command):
|
|
"""
|
|
Pretty-print a 'seer::board::chess_board::ChessBoard' as a 2D textual chess board.
|
|
"""
|
|
|
|
def __init__(self):
|
|
super(PrintBoard, self).__init__(
|
|
"print-board", gdb.COMMAND_USER, gdb.COMPLETE_EXPRESSION
|
|
)
|
|
|
|
def invoke(self, arg, from_tty):
|
|
board = ChessBoard.from_gdb(gdb.parse_and_eval(arg))
|
|
print(board.pretty_str())
|
|
|
|
|
|
def build_pretty_printer():
|
|
pp = gdb.printing.RegexpCollectionPrettyPrinter('seer')
|
|
|
|
pp.add_printer('Square', '^seer::board::square::Square$', SquarePrinter)
|
|
pp.add_printer('Bitboard', '^seer::board::bitboard::Bitboard$', BitboardPrinter)
|
|
pp.add_printer('CastleRights', '^seer::board::castle_rights::CastleRights$', CastleRightsPrinter)
|
|
pp.add_printer('Color', '^seer::board::color::Color$', ColorPrinter)
|
|
pp.add_printer('File', '^seer::board::file::File$', FilePrinter)
|
|
pp.add_printer('Rank', '^seer::board::rank::Rank$', RankPrinter)
|
|
pp.add_printer('Piece', '^seer::board::piece::Piece$', ColorPrinter)
|
|
pp.add_printer('Move', '^seer::board::move::Move$', MovePrinter)
|
|
|
|
return pp
|
|
|
|
|
|
def register_commands():
|
|
PrintBoard()
|
|
|
|
|
|
gdb.printing.register_pretty_printer(gdb.current_objfile(), build_pretty_printer(), True)
|
|
register_commands()
|