""" simple non-constant constant. Ie constant which does not get annotated as constant

"""

from rpython.rtyper.extregistry import ExtRegistryEntry

from rpython.flowspace.model import Constant

from rpython.annotator.model import not_const

class NonConstant(object):

def __init__(self, _constant):

self.__dict__['constant'] = _constant

def __getattr__(self, attr):

return getattr(self.__dict__['constant'], attr)

def __setattr__(self, attr, value):

setattr(self.__dict__['constant'], attr, value)

def __nonzero__(self):

return bool(self.__dict__['constant'])

def __eq__(self, other):

return self.__dict__['constant'] == other

def __add__(self, other):

return self.__dict__['constant'] + other

def __radd__(self, other):

return other + self.__dict__['constant']

def __mul__(self, other):

return self.__dict__['constant'] * other

class EntryNonConstant(ExtRegistryEntry):

_about_ = NonConstant

def compute_result_annotation(self, s_arg):

return not_const(s_arg)

def specialize_call(self, hop):

hop.exception_cannot_occur()

return hop.inputarg(hop.r_result, arg=0)