def descr_callback(self, w_cdecl, w_python_callable, w_error, w_onerror):
"""\
Return a callback object or a decorator making such a callback object.
'cdecl' must name a C function pointer type. The callback invokes the
specified 'python_callable' (which may be provided either directly or
via a decorator). Important: the callback object must be manually
kept alive for as long as the callback may be invoked from the C code."""
#
w_ctype = self.ffi_type(
w_cdecl, ACCEPT_STRING | ACCEPT_CTYPE | CONSIDER_FN_AS_FNPTR)
space = self.space
if not space.is_none(w_python_callable):
return ccallback.make_callback(space, w_ctype, w_python_callable,
w_error, w_onerror)
else:
# decorator mode: returns a single-argument function
return space.appexec([w_ctype, w_error, w_onerror],
"""(ctype, error, onerror):
import _cffi_backend
return lambda python_callable: (
_cffi_backend.callback(ctype, python_callable,
error, onerror))""")
def descr_callback(self, w_cdecl, w_python_callable, w_error, w_onerror):
"""\
Return a callback object or a decorator making such a callback object.
'cdecl' must name a C function pointer type. The callback invokes the
specified 'python_callable' (which may be provided either directly or
via a decorator). Important: the callback object must be manually
kept alive for as long as the callback may be invoked from the C code."""
#
w_ctype = self.ffi_type(w_cdecl, ACCEPT_STRING | ACCEPT_CTYPE | CONSIDER_FN_AS_FNPTR)
space = self.space
if not space.is_none(w_python_callable):
return ccallback.make_callback(space, w_ctype, w_python_callable, w_error, w_onerror)
else:
# decorator mode: returns a single-argument function
return space.appexec(
[w_ctype, w_error, w_onerror],
"""(ctype, error, onerror):
import _cffi_backend
return lambda python_callable: (
_cffi_backend.callback(ctype, python_callable,
error, onerror))""",
)
def callback(space, w_ctype, w_callable, w_error=None, w_onerror=None):
from pypy.module._cffi_backend.ccallback import make_callback
return make_callback(space, w_ctype, w_callable, w_error, w_onerror)
def callback(space, w_ctype, w_callable, w_error=None, w_onerror=None):
from pypy.module._cffi_backend.ccallback import make_callback
return make_callback(space, w_ctype, w_callable, w_error, w_onerror)
