def getStreamValueByte(self):
"""Return byte value, encoding the special built-in value."""
# Currently the only one.
if self.value == "Ellipsis":
return to_byte(0)
elif self.value == "NotImplemented":
return to_byte(1)
else:
assert False, self.value
def _writeConstantValue(output, constant_value):
# Massively many details per value, pylint: disable=too-many-branches,too-many-statements
constant_type = type(constant_value)
if constant_type is tuple:
# TODO: Optimize for size of tuple to be < 256 with dedicated value
output.write(b"T" + struct.pack("i", len(constant_value)))
for element in constant_value:
_writeConstantValue(output, element)
elif constant_type is list:
# TODO: Optimize for size of tuple to be < 256 with dedicated value
output.write(b"L" + struct.pack("i", len(constant_value)))
for element in constant_value:
_writeConstantValue(output, element)
elif constant_type is dict:
# TODO: Optimize for size of tuple to be < 256 with dedicated value
output.write(b"D" + struct.pack("i", len(constant_value)))
for key, value in constant_value.items():
_writeConstantValue(output, key)
_writeConstantValue(output, value)
elif constant_type is set:
# TODO: Optimize for size of tuple to be < 256 with dedicated value
output.write(b"S" + struct.pack("i", len(constant_value)))
for element in constant_value:
_writeConstantValue(output, element)
elif constant_type is frozenset:
# TODO: Optimize for size of tuple to be < 256 with dedicated value
output.write(b"P" + struct.pack("i", len(constant_value)))
for element in constant_value:
_writeConstantValue(output, element)
elif constant_type is long:
if min_signed_long <= constant_value <= max_signed_long:
output.write(b"l" + struct.pack("l", constant_value))
elif min_signed_longlong <= constant_value <= max_signed_longlong:
output.write(b"q" + struct.pack("q", constant_value))
else:
output.write(b"g")
if constant_value < 0:
constant_value = abs(constant_value)
output.write(b"-")
else:
output.write(b"+")
parts = []
mod_value = 2**(sizeof_clonglong * 8)
while constant_value > 0:
parts.append(constant_value % mod_value)
constant_value >>= sizeof_clonglong * 8
output.write(struct.pack("i", len(parts)))
for part in reversed(parts):
output.write(struct.pack("Q", part))
elif constant_type is int:
# This is Python2 then. TODO: Special case smaller values.
output.write(b"i" + struct.pack("l", constant_value))
elif constant_type is float:
if constant_value == 0.0:
if math.copysign(1, constant_value) == 1:
output.write(b"Z" + to_byte(0))
else:
output.write(b"Z" + to_byte(1))
elif math.isnan(constant_value):
if math.copysign(1, constant_value) == 1:
output.write(b"Z" + to_byte(2))
else:
output.write(b"Z" + to_byte(3))
elif math.isinf(constant_value):
if math.copysign(1, constant_value) == 1:
output.write(b"Z" + to_byte(4))
else:
output.write(b"Z" + to_byte(5))
else:
output.write(b"f" + struct.pack("d", constant_value))
elif constant_type is unicode:
if str is not bytes:
encoded = constant_value.encode("utf8", "surrogatepass")
else:
encoded = constant_value.encode("utf8")
if len(encoded) == 1:
output.write(b"w" + encoded)
# Zero termination if possible.
elif b"\0" in encoded:
output.write(b"v" + struct.pack("i", len(encoded)))
output.write(encoded)
else:
if str is not bytes and _isAttributeName(constant_value):
indicator = b"a"
else:
indicator = b"u"
output.write(indicator + encoded + b"\0")
elif constant_type is bytes:
if len(constant_value) == 1:
output.write(b"d" + constant_value)
# Zero termination if possible.
elif b"\0" in constant_value:
output.write(b"b" + struct.pack("i", len(constant_value)))
output.write(constant_value)
else:
if str is bytes and _isAttributeName(constant_value):
indicator = b"a"
else:
indicator = b"c"
output.write(indicator + constant_value + b"\0")
elif constant_type is slice:
output.write(b":")
_writeConstantValue(output, constant_value.start)
_writeConstantValue(output, constant_value.stop)
_writeConstantValue(output, constant_value.step)
elif constant_type is range:
output.write(b";")
_writeConstantValue(output, constant_value.start)
_writeConstantValue(output, constant_value.stop)
_writeConstantValue(output, constant_value.step)
elif constant_type is xrange:
output.write(b";")
range_args = [
int(v) for v in str(constant_value)
[7 if str is bytes else 6:-1].split(",")
]
# Default start.
if len(range_args) == 1:
range_args.insert(0, 0)
# Default step
if len(range_args) < 3:
range_args.append(1)
output.write(struct.pack("iii", *range_args))
elif constant_value is None:
output.write(b"n")
elif constant_value is True:
output.write(b"t")
elif constant_value is False:
output.write(b"F")
elif constant_type is complex:
# Some float values do not transport well, use float streaming then.
if (constant_value.real == 0 or constant_value.imag == 0
or math.isnan(constant_value.real)
or math.isnan(constant_value.imag)
or math.isinf(constant_value.real)
or math.isinf(constant_value.imag)):
output.write(b"J")
_writeConstantValue(output, constant_value.real)
_writeConstantValue(output, constant_value.imag)
else:
output.write(b"j")
output.write(
struct.pack("dd", constant_value.real, constant_value.imag))
elif constant_type is bytearray:
output.write(b"B" + struct.pack("i", len(constant_value)))
if python_version < 0x270:
constant_value = constant_value.decode("latin1")
output.write(constant_value)
elif constant_type is BuiltinAnonValue:
output.write(b"M")
output.write(constant_value.getStreamValueByte())
elif constant_type is BuiltinSpecialValue:
output.write(b"Q")
output.write(constant_value.getStreamValueByte())
elif constant_type is BlobData:
constant_value = constant_value.getData()
output.write(b"X")
output.write(struct.pack("i", len(constant_value)))
output.write(constant_value)
elif constant_value in builtin_named_values:
output.write(b"O")
output.write(builtin_named_values[constant_value].encode("utf8"))
output.write(b"\0")
elif constant_value in builtin_exception_values_list:
output.write(b"E")
output.write(constant_value.__name__.encode("utf8"))
output.write(b"\0")
else:
assert False, constant_value
def getStreamValueByte(self):
"""Return byte value, encoding the anon built-in value."""
return to_byte(self.anon_values.index(self.anon_name))