def _test_initialize_offsets(self, array_traits, array_values,
expected_bitsize, expected_aligned_bitsize):
array = Array(array_traits, array_values)
self.assertEqual(0 + expected_bitsize, array.initialize_offsets(0))
self.assertEqual(7 + expected_bitsize, array.initialize_offsets(7))
auto_array = Array(array_traits, array_values, is_auto=True)
self.assertEqual(
0 + bitsizeof_varuint64(len(array_values)) + expected_bitsize,
auto_array.initialize_offsets(0))
self.assertEqual(
7 + bitsizeof_varuint64(len(array_values)) + expected_bitsize,
auto_array.initialize_offsets(7))
aligned_array = Array(array_traits,
array_values,
set_offset_method=ArrayTest._set_offset_method)
self.assertEqual(0 + expected_aligned_bitsize,
aligned_array.initialize_offsets(0))
self.assertEqual(1 + 7 + expected_aligned_bitsize,
aligned_array.initialize_offsets(1))
self.assertEqual(3 + 5 + expected_aligned_bitsize,
aligned_array.initialize_offsets(3))
self.assertEqual(5 + 3 + expected_aligned_bitsize,
aligned_array.initialize_offsets(5))
self.assertEqual(7 + 1 + expected_aligned_bitsize,
aligned_array.initialize_offsets(7))
def bitsizeof(_bitposition: int, value: int) -> int:
"""
Returns length of Zserio varuint64 type stored in the bit stream in bits.
:param _bitposition: Not used.
:param value: Zserio varuint64 type value.
:returns: Length of given Zserio varuint64 type in bits.
"""
return bitsizeof_varuint64(value)
def write_varuint64(self, value: int) -> None:
"""
Writes a variable 16-bit unsigned integer value to the underlying storage.
:param value: Value to write.
:raises PythonRuntimeException: If the value is out of the range.
"""
self._write_varnum(value,
8,
bitsizeof_varuint64(value) // 8,
is_signed=False)
def _test_write(self, array_traits, array_values, expected_bitsize,
expected_aligned_bitsize):
array = Array(array_traits, array_values)
writer = BitStreamWriter()
array.write(writer)
self.assertEqual(expected_bitsize, writer.bitposition)
auto_array = Array(array_traits, array_values, is_auto=True)
writer = BitStreamWriter()
auto_array.write(writer)
self.assertEqual(
bitsizeof_varuint64(len(array_values)) + expected_bitsize,
writer.bitposition)
aligned_array = Array(
array_traits,
array_values,
check_offset_method=ArrayTest._check_offset_method)
writer = BitStreamWriter()
writer.write_bool(False)
aligned_array.write(writer)
self.assertEqual(1 + 7 + expected_aligned_bitsize, writer.bitposition)
def test_bitsizeof_varuint64(self):
self.assertEqual(1 * 8, bitsizeof_varuint64(0))
self.assertEqual(1 * 8, bitsizeof_varuint64(1 << (0)))
self.assertEqual(1 * 8, bitsizeof_varuint64((1 << (7)) - 1))
self.assertEqual(2 * 8, bitsizeof_varuint64(1 << (7)))
self.assertEqual(2 * 8, bitsizeof_varuint64((1 << (7 + 7)) - 1))
self.assertEqual(3 * 8, bitsizeof_varuint64(1 << (7 + 7)))
self.assertEqual(3 * 8, bitsizeof_varuint64((1 << (7 + 7 + 7)) - 1))
self.assertEqual(4 * 8, bitsizeof_varuint64(1 << (7 + 7 + 7)))
self.assertEqual(4 * 8,
bitsizeof_varuint64((1 << (7 + 7 + 7 + 7)) - 1))
self.assertEqual(5 * 8, bitsizeof_varuint64(1 << (7 + 7 + 7 + 7)))
self.assertEqual(5 * 8,
bitsizeof_varuint64((1 << (7 + 7 + 7 + 7 + 7)) - 1))
self.assertEqual(6 * 8, bitsizeof_varuint64(1 << (7 + 7 + 7 + 7 + 7)))
self.assertEqual(
6 * 8, bitsizeof_varuint64((1 << (7 + 7 + 7 + 7 + 7 + 7)) - 1))
self.assertEqual(7 * 8,
bitsizeof_varuint64(1 << (7 + 7 + 7 + 7 + 7 + 7)))
self.assertEqual(
7 * 8, bitsizeof_varuint64((1 << (7 + 7 + 7 + 7 + 7 + 7 + 7)) - 1))
self.assertEqual(8 * 8,
bitsizeof_varuint64(1 << (7 + 7 + 7 + 7 + 7 + 7 + 7)))
self.assertEqual(
8 * 8,
bitsizeof_varuint64((1 << (7 + 7 + 7 + 7 + 7 + 7 + 7 + 8)) - 1))
with self.assertRaises(PythonRuntimeException):
bitsizeof_varuint64(-1) # below the lower bound
with self.assertRaises(PythonRuntimeException):
bitsizeof_varuint64(
1 << (7 + 7 + 7 + 7 + 7 + 7 + 7 + 8)) # above the upper bound