def convert_argument_from_object(self, cdata, w_ob):
from pypy.module._cffi_backend.ctypefunc import set_mustfree_flag
result = (not isinstance(w_ob, cdataobj.W_CData) and
self._prepare_pointer_call_argument(w_ob, cdata))
if result == 0:
self.convert_from_object(cdata, w_ob)
set_mustfree_flag(cdata, result)
return result
def convert_argument_from_object(self, cdata, w_ob, keepalives, i):
# writes the pointer to cdata[0], writes the must-free flag in
# the byte just before cdata[0], and returns True if something
# must be done later to free.
from pypy.module._cffi_backend.ctypefunc import set_mustfree_flag
if isinstance(w_ob, cdataobj.W_CData):
result = 0
else:
space = self.space
if self.accept_str and space.isinstance_w(w_ob, space.w_bytes):
# special case to optimize strings passed to a "char *" argument
value = space.bytes_w(w_ob)
if isinstance(self.ctitem, ctypeprim.W_CTypePrimitiveBool):
self._must_be_string_of_zero_or_one(value)
keepalives[i] = misc.write_string_as_charp(cdata, value)
return True
result = self._prepare_pointer_call_argument(w_ob, cdata)
if result == 0:
self.convert_from_object(cdata, w_ob)
set_mustfree_flag(cdata, result)
return result == 1 # 0 or 2 => False, nothing to do later
def write_string_as_charp(target, string):
from pypy.module._cffi_backend.ctypefunc import set_mustfree_flag
buf, llobj, buf_flag = rffi.get_nonmovingbuffer_ll_final_null(string)
set_mustfree_flag(target, ord(buf_flag)) # 4, 5 or 6
rffi.cast(rffi.CCHARPP, target)[0] = buf
return llobj