def writeVarInt64(self, value: int) -> None:
"""
Writes a variable 16-bit signed integer value to the underlying storage.
:param value: Value to write.
:raises PythonRuntimeException: If the value is out of the range.
"""
self._writeVarNum(value, 8, getBitSizeOfVarInt64(value) // 8, isSigned=True)
def bitSizeOf(_bitPosition, value):
"""
Returns length of Zserio varint64 type stored in the bit stream in bits.
:param _bitPosition: Not used.
:param value: Zserio varint64 type value.
:returns: Length of given Zserio varint64 type in bits.
"""
return getBitSizeOfVarInt64(value)
def writeVarInt64(self, value):
"""
Writes a variable 16-bit signed integer value to the underlying storage.
:param value: Value to write.
:raises PythonRuntimeException: If the value is out of the range.
"""
numBytes = getBitSizeOfVarInt64(value) // 8
self._writeVarNum(abs(value), numBytes, VARINT64_NUM_BITS, sign=(value < 0))
def testGetBitSizeOfVarInt64(self):
self.assertEqual(1 * 8, getBitSizeOfVarInt64(0))
self.assertEqual(1 * 8, getBitSizeOfVarInt64(1 << (0)))
self.assertEqual(1 * 8, getBitSizeOfVarInt64(-(1 << (0))))
self.assertEqual(1 * 8, getBitSizeOfVarInt64((1 << (6)) - 1))
self.assertEqual(1 * 8, getBitSizeOfVarInt64(-((1 << (6)) - 1)))
self.assertEqual(2 * 8, getBitSizeOfVarInt64(1 << (6)))
self.assertEqual(2 * 8, getBitSizeOfVarInt64(-(1 << (6))))
self.assertEqual(2 * 8, getBitSizeOfVarInt64((1 << (6 + 7)) - 1))
self.assertEqual(2 * 8, getBitSizeOfVarInt64(-((1 << (6 + 7)) - 1)))
self.assertEqual(3 * 8, getBitSizeOfVarInt64(1 << (6 + 7)))
self.assertEqual(3 * 8, getBitSizeOfVarInt64(-(1 << (6 + 7))))
self.assertEqual(3 * 8, getBitSizeOfVarInt64((1 << (6 + 7 + 7)) - 1))
self.assertEqual(3 * 8,
getBitSizeOfVarInt64(-((1 << (6 + 7 + 7)) - 1)))
self.assertEqual(4 * 8, getBitSizeOfVarInt64(1 << (6 + 7 + 7)))
self.assertEqual(4 * 8, getBitSizeOfVarInt64(-(1 << (6 + 7 + 7))))
self.assertEqual(4 * 8,
getBitSizeOfVarInt64((1 << (6 + 7 + 7 + 7)) - 1))
self.assertEqual(4 * 8,
getBitSizeOfVarInt64(-((1 << (6 + 7 + 7 + 7)) - 1)))
self.assertEqual(5 * 8, getBitSizeOfVarInt64(1 << (6 + 7 + 7 + 7)))
self.assertEqual(5 * 8, getBitSizeOfVarInt64(-(1 << (6 + 7 + 7 + 7))))
self.assertEqual(5 * 8,
getBitSizeOfVarInt64((1 << (6 + 7 + 7 + 7 + 7)) - 1))
self.assertEqual(
5 * 8, getBitSizeOfVarInt64(-((1 << (6 + 7 + 7 + 7 + 7)) - 1)))
self.assertEqual(6 * 8, getBitSizeOfVarInt64(1 << (6 + 7 + 7 + 7 + 7)))
self.assertEqual(6 * 8,
getBitSizeOfVarInt64(-(1 << (6 + 7 + 7 + 7 + 7))))
self.assertEqual(
6 * 8, getBitSizeOfVarInt64((1 << (6 + 7 + 7 + 7 + 7 + 7)) - 1))
self.assertEqual(
6 * 8, getBitSizeOfVarInt64(-((1 << (6 + 7 + 7 + 7 + 7 + 7)) - 1)))
self.assertEqual(7 * 8,
getBitSizeOfVarInt64(1 << (6 + 7 + 7 + 7 + 7 + 7)))
self.assertEqual(7 * 8,
getBitSizeOfVarInt64(-(1 << (6 + 7 + 7 + 7 + 7 + 7))))
self.assertEqual(
7 * 8,
getBitSizeOfVarInt64((1 << (6 + 7 + 7 + 7 + 7 + 7 + 7)) - 1))
self.assertEqual(
7 * 8,
getBitSizeOfVarInt64(-((1 << (6 + 7 + 7 + 7 + 7 + 7 + 7)) - 1)))
self.assertEqual(
8 * 8, getBitSizeOfVarInt64(1 << (6 + 7 + 7 + 7 + 7 + 7 + 7)))
self.assertEqual(
8 * 8, getBitSizeOfVarInt64(-(1 << (6 + 7 + 7 + 7 + 7 + 7 + 7))))
self.assertEqual(
8 * 8,
getBitSizeOfVarInt64((1 << (6 + 7 + 7 + 7 + 7 + 7 + 7 + 8)) - 1))
self.assertEqual(
8 * 8,
getBitSizeOfVarInt64(-(
(1 << (6 + 7 + 7 + 7 + 7 + 7 + 7 + 8)) - 1)))
with self.assertRaises(PythonRuntimeException):
getBitSizeOfVarInt64(
-(1 <<
(6 + 7 + 7 + 7 + 7 + 7 + 7 + 8))) # below the lower bound
with self.assertRaises(PythonRuntimeException):
getBitSizeOfVarInt64(
1 << (6 + 7 + 7 + 7 + 7 + 7 + 7 + 8)) # above the upper bound