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from rpython.rlib.objectmodel import import_from_mixin, specialize
from rpython.rtyper.lltypesystem import lltype, rffi
from pypy.interpreter.error import oefmt
from pypy.interpreter.baseobjspace import W_Root
from pypy.interpreter.function import descr_function_get
from pypy.interpreter.typedef import TypeDef, interp_attrproperty
from pypy.interpreter.gateway import (
interp2app, interpindirect2app, unwrap_spec)
from pypy.objspace.std.typeobject import W_TypeObject
from pypy.module._hpy_universal import llapi
from pypy.module._hpy_universal.state import State
SUPPORTED_SIGNATURES = (
llapi.HPyFunc_VARARGS,
llapi.HPyFunc_KEYWORDS,
llapi.HPyFunc_NOARGS,
llapi.HPyFunc_O
)
class W_AbstractExtensionFunction(W_Root):
# XXX: should we have separate classes for each sig?
def descr_call(self, space, __args__):
raise NotImplementedError
class W_ExtensionFunctionMixin(object):
_immutable_fields_ = ["sig", "name"]
@specialize.arg(2)
def __init__(self, space, handles, name, sig, doc, cfuncptr, w_self):
self.handles = handles
self.w_self = w_self
self.name = name
self.sig = sig
if self.sig not in SUPPORTED_SIGNATURES:
raise oefmt(space.w_ValueError, "Unsupported HPyMeth signature")
#raise oefmt(space.w_ValueError, "Unsupported HPyMeth.signature: %d", self.sig)
self.doc = doc
self.cfuncptr = cfuncptr
def call_noargs(self, space, h_self):
func = llapi.cts.cast('HPyFunc_noargs', self.cfuncptr)
h_result = func(self.handles.ctx, h_self)
if not h_result:
space.fromcache(State).raise_current_exception()
return self.handles.consume(h_result)
def call_o(self, space, h_self, w_arg):
with self.handles.using(w_arg) as h_arg:
func = llapi.cts.cast('HPyFunc_o', self.cfuncptr)
h_result = func(self.handles.ctx, h_self, h_arg)
if not h_result:
space.fromcache(State).raise_current_exception()
return self.handles.consume(h_result)
def call_varargs_kw(self, space, h_self, __args__, skip_args, has_keywords):
# this function is more or less the equivalent of
# ctx_CallRealFunctionFromTrampoline in cpython-universal
n = len(__args__.arguments_w) - skip_args
# XXX this looks inefficient: ideally, we would like the equivalent of
# alloca(): do we have it in RPython? The alternative is to wrap
# arguments_w in a tuple, convert to handle and pass it to a C
# function whichs calls alloca() and the forwards everything to the
# functpr
with lltype.scoped_alloc(rffi.CArray(llapi.HPy), n) as args_h:
i = 0
while i < n:
args_h[i] = self.handles.new(__args__.arguments_w[i + skip_args])
i += 1
try:
if has_keywords:
h_result = self.call_keywords(space, h_self, args_h, n, __args__)
else:
h_result = self.call_varargs(space, h_self, args_h, n)
finally:
for i in range(n):
self.handles.close(args_h[i])
if not h_result:
space.fromcache(State).raise_current_exception()
return self.handles.consume(h_result)
def call_varargs(self, space, h_self, args_h, n):
fptr = llapi.cts.cast('HPyFunc_varargs', self.cfuncptr)
return fptr(self.handles.ctx, h_self, args_h, n)
def call_keywords(self, space, h_self, args_h, n, __args__):
# XXX: if there are no keywords, should we pass HPy_NULL or an empty
# dict?
h_kw = 0
if __args__.keyword_names_w:
w_kw = space.newdict()
for i in range(len(__args__.keyword_names_w)):
w_key = __args__.keyword_names_w[i]
w_value = __args__.keywords_w[i]
space.setitem(w_kw, w_key, w_value)
h_kw = self.handles.new(w_kw)
fptr = llapi.cts.cast('HPyFunc_keywords', self.cfuncptr)
try:
return fptr(self.handles.ctx, h_self, args_h, n, h_kw)
finally:
if h_kw:
self.handles.consume(h_kw)
def descr_call(self, space, __args__):
with self.handles.using(self.w_self) as h_self:
return self.call(space, h_self, __args__)
def call(self, space, h_self, __args__, skip_args=0):
sig = self.sig
length = len(__args__.arguments_w) - skip_args
if sig == llapi.HPyFunc_KEYWORDS:
return self.call_varargs_kw(space, h_self, __args__, skip_args, has_keywords=True)
if __args__.keyword_names_w:
raise oefmt(space.w_TypeError,
"%s() takes no keyword arguments", self.name)
if sig == llapi.HPyFunc_NOARGS:
if length == 0:
return self.call_noargs(space, h_self)
raise oefmt(space.w_TypeError,
"%s() takes no arguments", self.name)
if sig == llapi.HPyFunc_O:
if length != 1:
raise oefmt(space.w_TypeError,
"%s() takes exactly one argument (%d given)",
self.name, length)
return self.call_o(space, h_self, __args__.arguments_w[skip_args])
if sig == llapi.HPyFunc_VARARGS:
return self.call_varargs_kw(space, h_self, __args__, skip_args, has_keywords=False)
else: # shouldn't happen!
raise oefmt(space.w_RuntimeError, "unknown calling convention")
class W_ExtensionFunction_u(W_AbstractExtensionFunction):
import_from_mixin(W_ExtensionFunctionMixin)
class W_ExtensionFunction_d(W_AbstractExtensionFunction):
import_from_mixin(W_ExtensionFunctionMixin)
W_AbstractExtensionFunction.typedef = TypeDef(
'extension_function',
__call__ = interpindirect2app(W_AbstractExtensionFunction.descr_call),
__doc__ = interp_attrproperty('doc', cls=W_AbstractExtensionFunction,
wrapfn="newtext_or_none"),
)
W_AbstractExtensionFunction.typedef.acceptable_as_base_class = False
class W_AbstractExtensionMethod(W_Root):
def descr_call(self, space, __args__):
raise NotImplementedError
class W_ExtensionMethodMixin(object):
import_from_mixin(W_ExtensionFunctionMixin)
def __init__(self, space, handles, name, sig, doc, cfuncptr, w_objclass):
W_ExtensionFunctionMixin.__init__.__func__(self, space, handles, name, sig, doc,
cfuncptr, space.w_None)
self.w_objclass = w_objclass
def descr_call(self, space, __args__):
# XXX: basically a copy of cpyext's W_PyCMethodObject.descr_call()
if len(__args__.arguments_w) == 0:
w_objclass = self.w_objclass
assert isinstance(w_objclass, W_TypeObject)
raise oefmt(space.w_TypeError,
"descriptor '%8' of '%s' object needs an argument",
self.name, self.w_objclass.getname(space))
w_instance = __args__.arguments_w[0]
# XXX: needs a stricter test
if not space.isinstance_w(w_instance, self.w_objclass):
w_objclass = self.w_objclass
assert isinstance(w_objclass, W_TypeObject)
raise oefmt(space.w_TypeError,
"descriptor '%8' requires a '%s' object but received a '%T'",
self.name, w_objclass.name, w_instance)
#
with self.handles.using(w_instance) as h_instance:
return self.call(space, h_instance, __args__, skip_args=1)
class W_ExtensionMethod_u(W_AbstractExtensionMethod):
import_from_mixin(W_ExtensionMethodMixin)
class W_ExtensionMethod_d(W_AbstractExtensionMethod):
import_from_mixin(W_ExtensionMethodMixin)
W_AbstractExtensionMethod.typedef = TypeDef(
'method_descriptor_',
__get__ = interp2app(descr_function_get),
__call__ = interpindirect2app(W_AbstractExtensionMethod.descr_call),
__doc__ = interp_attrproperty('doc', cls=W_AbstractExtensionMethod,
wrapfn="newtext_or_none"),
)
W_AbstractExtensionMethod.typedef.acceptable_as_base_class = False
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