def testReadVarSize(self):
# overflow, 2^32 - 1 is too much (b'\x83\xFF\xFF\xFF\xFF') is the maximum)
reader = BitStreamReader(b'\x87\xFF\xFF\xFF\xFF')
with self.assertRaises(PythonRuntimeException):
reader.readVarSize()
# overflow, 2^36 - 1 is too much (b'\x83\xFF\xFF\xFF\xFF') is the maximum)
reader = BitStreamReader(b'\xFF\xFF\xFF\xFF\xFF')
with self.assertRaises(PythonRuntimeException):
reader.readVarSize()
def read(self, reader: BitStreamReader, size: int = 0) -> None:
"""
Reads array from the bit stream.
:param reader: Bit stream from which to read.
:param size: Number of elements to read or None in case of implicit or auto arrays.
:raises PythonRuntimeException: If the array does not have elements with constant bit size.
"""
self._rawArray.clear()
if self._isImplicit:
if not self._arrayTraits.HAS_BITSIZEOF_CONSTANT:
raise PythonRuntimeException("Array: Implicit array elements must have constant bit size!")
elementSize = self._arrayTraits.bitSizeOf()
remainingBits = reader.getBufferBitSize() - reader.getBitPosition()
readSize = remainingBits // elementSize
for index in range(readSize):
self._rawArray.append(self._arrayTraits.read(reader, index))
else:
if self._isAuto:
readSize = reader.readVarSize()
else:
readSize = size
for index in range(readSize):
if self._checkOffsetMethod is not None:
reader.alignTo(8)
self._checkOffsetMethod(index, reader.getBitPosition())
self._rawArray.append(self._arrayTraits.read(reader, index))
def read(reader: BitStreamReader, _index: int) -> int:
"""
Reads Zserio varsize type from the bit stream.
:param reader: Bit stream from which to read.
:param _index: Not used.
"""
return reader.readVarSize()
