# hashing and comparability. But in PYX mode, we override _hash and
# _equals as well.
def _key(self):
raise TypeError("Cannot hash or compare capnpy structs. "
"Use the $Py.key annotation to enable it")
def __hash__(self):
return hash(self._key())
def _equals(self, other):
if isinstance(other, Struct) or isinstance(other, tuple):
# by doing this, we ensure that we compare equals to tuples
return other == self._key()
return False
# this is already defined in blob.py: however, it seems if we do not
# redeclare it here, Cython won't use it
def __richcmp__(self, other, op):
return self._richcmp(other, op)
# Attach the dump[s] methods to Struct. This is the only way I found to make
# sure that Struct.dumps is implemented in C (on CPython). The obvious
# alternative is to implement dumps directly in the class body and to declare
# it as cpdef in struct_.pxd: however, this cannot work because there are
# circular dependencies between struct_.pxd and message.pxd. This gives a ~20%
# improvement.
import capnpy.message
magic_setattr(Struct, 'dump', capnpy.message.dump)
magic_setattr(Struct, 'dumps', capnpy.message.dumps)
def fill_enum(cls):
for i, member in enumerate(cls.__members__):
value = cls(i)
magic_setattr(cls, member, value)