Add GDB pretty-printers

This commit is contained in:
Bruno BELANYI 2022-07-15 23:52:16 +02:00
parent 41903be143
commit fdfc1fcf63
2 changed files with 80 additions and 0 deletions

2
.gdbinit Normal file
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# Register pretty-printers
source utils/gdb/seer_pretty_printers.py

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import gdb.printing
class Square(object):
"""
Wrapper around GDB's representation of a 'seer::board::square::Square' in
memory.
"""
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):
self._val = val
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):
"""
Wrapper around GDB's representation of a 'seer::board::bitboard::Bitboard'
in memory.
"""
def __init__(self, val):
self._val = val
def __str__(self):
return "[" + ", ".join(map(str, self.squares)) + "]"
@property
def squares(self):
n = int(self._val["__0"])
while n:
b = n & (~n+1)
yield Square(b.bit_length() - 1)
n ^= b
class SquarePrinter(object):
"Print a seer::board::square::Square"
def __init__(self, val):
self._val = Square(val)
def to_string(self):
return str(self._val)
def display_hint(self):
return 'string'
class BitboardPrinter(object):
"Print a seer::board::bitboard::Bitboard"
def __init__(self, val):
self._val = Bitboard(val)
def to_string(self):
return "Bitboard{" + str(self._val)[1:-1] + "}"
def display_hint(self):
return 'string'
def build_pretty_printer():
pp = gdb.printing.RegexpCollectionPrettyPrinter('seer')
pp.add_printer('BigNum', '^seer::board::square::Square$', SquarePrinter)
pp.add_printer('BigNum', '^seer::board::bitboard::Bitboard$', BitboardPrinter)
return pp
gdb.printing.register_pretty_printer(gdb.current_objfile(), build_pretty_printer(), True)