def parse_signed_leb128(self, width):
value, count = leb128.read_signed(self.view, width)
self._advance(count)
return value
def parse_value_type(data):
value, count = leb128.read_signed(data, 7)
assert value in LanguageType.value_types
return value, count
else:
return '1' + '0' * len(bitstr)
def leb128_sint_encode(num):
enc = []
is_negative = num < 0
size = num.bit_length()
more = True
while more:
byte = num & 0b0111_1111
num >>= 7
# if is_negative:
# num |= (0x0111_1111) << (size - 7)
done = (num == 0) and (not bool(byte & 0b0100_0000))
done = done or ((num == -1) and (bool(byte & 0b0100_0000)))
if done:
more = False
else:
byte |= 0b1000_0000
enc.append(byte)
return bytes(bytearray(enc))
for i in tqdm(range(-100_000_000, 0)):
enc = leb128_sint_encode(i)
dec = leb128.read_signed(enc, 32)[0]
if i != dec:
print(i, dec)
assert False
def parse_block_type(data):
value, count = leb128.read_signed(data, 7)
assert (not (value in LanguageType.value_types)) or (
value == LanguageType.block)
return value, count