def deserialize(self, reader: io.IOBase) -> 'ILTag':
tag_offset = reader.tell()
try:
tag_id, _ = pyilint.ilint_decode_from_stream(reader)
tag = self.create(tag_id)
if tag is None:
if self.strict or iltags_is_implicit(tag_id):
raise ILTagUnknownError(
f'Unknown tag with id {id} at {tag_offset}.')
else:
tag = ILRawTag(tag_id)
if iltags_is_implicit(tag_id):
tag_size = ILStandardTagFactory.ILTAG_IMPLICIT_SIZES[tag_id]
else:
tag_size, _ = pyilint.ilint_decode_from_stream(reader)
if tag_id == ILTAG_ILINT64_ID:
tag.deserialize_value(self, tag_size, reader)
else:
value_reader = io.BytesIO(read_bytes(tag_size, reader))
tag.deserialize_value(self, tag_size, value_reader)
left_behind = tag_size - value_reader.tell()
if left_behind != 0:
raise ILTagCorruptedError(
f'The tag at {tag_offset} with id {tag_id} and size {tag_size} could not be deserialized by the class {tag.__class__}. {left_behind} bytes were not used.'
)
return tag
except (ValueError, EOFError):
raise ILTagCorruptedError(f'Corrupted tag at {tag_offset}.')
def deserialize_value(self, tag_factory: ILTagFactory, tag_size: int,
reader: io.IOBase) -> None:
if tag_size < 1:
raise ILTagCorruptedError('Corrupted tag.')
self.clear()
count, _ = pyilint.ilint_decode_from_stream(reader)
for i in range(count):
v, _ = pyilint.ilint_decode_from_stream(reader)
self.append(v)
def deserialize_value(self, tag_factory: ILTagFactory, tag_size: int,
reader: io.IOBase) -> None:
if tag_size < 3:
raise ILTagCorruptedError('Corrupted range.')
try:
first, _ = pyilint.ilint_decode_from_stream(reader)
count = read_int(2, False, reader)
self.first = first
self.count = count
except ValueError:
raise ILTagCorruptedError('Corrupted range.')
def deserialize_value(self, tag_factory: ILTagFactory, tag_size: int,
reader: io.IOBase) -> None:
if tag_size < 1:
raise ILTagCorruptedError('Corrupted tag.')
count, _ = pyilint.ilint_decode_from_stream(reader)
self.clear()
for i in range(count):
key = tag_factory.deserialize(reader)
if not ILStringTag.is_standard_string(key):
raise ILTagCorruptedError(
'Corrupted tag. One of the keys is not a string.')
value = tag_factory.deserialize(reader)
self[key.value] = value
def deserialize_value(self, tag_factory: ILTagFactory, tag_size: int,
reader: io.IOBase) -> None:
if tag_size < 1:
raise ILTagCorruptedError('Corrupted tag.')
reader = LimitedReaderWrapper(reader, tag_size)
self.clear()
try:
count, _ = pyilint.ilint_decode_from_stream(reader)
except ValueError:
raise ILTagCorruptedError('Corrupted tag.')
for i in range(count):
t = tag_factory.deserialize(reader)
self.append(t)