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# Types conforming to `_UniffiConverterPrimitive` pass themselves directly over the FFI.
class _UniffiConverterPrimitive:
@classmethod
def lift(cls, value):
return value
@classmethod
def lower(cls, value):
return value
class _UniffiConverterPrimitiveInt(_UniffiConverterPrimitive):
@classmethod
def check_lower(cls, value):
try:
value = value.__index__()
except Exception:
raise TypeError("'{}' object cannot be interpreted as an integer".format(type(value).__name__))
if not isinstance(value, int):
raise TypeError("__index__ returned non-int (type {})".format(type(value).__name__))
if not cls.VALUE_MIN <= value < cls.VALUE_MAX:
raise ValueError("{} requires {} <= value < {}".format(cls.CLASS_NAME, cls.VALUE_MIN, cls.VALUE_MAX))
class _UniffiConverterPrimitiveFloat(_UniffiConverterPrimitive):
@classmethod
def check_lower(cls, value):
try:
value = value.__float__()
except Exception:
raise TypeError("must be real number, not {}".format(type(value).__name__))
if not isinstance(value, float):
raise TypeError("__float__ returned non-float (type {})".format(type(value).__name__))
# Helper class for wrapper types that will always go through a _UniffiRustBuffer.
# Classes should inherit from this and implement the `read` and `write` static methods.
class _UniffiConverterRustBuffer:
@classmethod
def lift(cls, rbuf):
with rbuf.consume_with_stream() as stream:
return cls.read(stream)
@classmethod
def lower(cls, value):
with _UniffiRustBuffer.alloc_with_builder() as builder:
cls.write(value, builder)
return builder.finalize()
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