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modffi: Add toplevel func() function to create a function by pointer.

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This commit is contained in:
Paul Sokolovsky 2015-02-11 07:20:35 +08:00
parent 891e444fec
commit 99bcaa2fb6
1 changed files with 24 additions and 12 deletions
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36
unix/modffi.c
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@ -179,24 +179,17 @@ STATIC mp_obj_t ffimod_close(mp_obj_t self_in) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(ffimod_close_obj, ffimod_close);
STATIC mp_obj_t ffimod_func(mp_uint_t n_args, const mp_obj_t *args) {
(void)n_args; // always 4
mp_obj_ffimod_t *self = args[0];
const char *rettype = mp_obj_str_get_str(args[1]);
const char *symname = mp_obj_str_get_str(args[2]);
STATIC mp_obj_t make_func(mp_obj_t rettype_in, void *func, mp_obj_t argtypes_in) {
const char *rettype = mp_obj_str_get_str(rettype_in);
void *sym = dlsym(self->handle, symname);
if (sym == NULL) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(errno)));
}
mp_int_t nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(args[3]));
mp_int_t nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(argtypes_in));
mp_obj_ffifunc_t *o = m_new_obj_var(mp_obj_ffifunc_t, ffi_type*, nparams);
o->base.type = &ffifunc_type;
o->func = sym;
o->func = func;
o->rettype = *rettype;
mp_obj_t iterable = mp_getiter(args[3]);
mp_obj_t iterable = mp_getiter(argtypes_in);
mp_obj_t item;
int i = 0;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
@ -210,8 +203,26 @@ STATIC mp_obj_t ffimod_func(mp_uint_t n_args, const mp_obj_t *args) {
return o;
}
STATIC mp_obj_t ffimod_func(mp_uint_t n_args, const mp_obj_t *args) {
(void)n_args; // always 4
mp_obj_ffimod_t *self = args[0];
const char *symname = mp_obj_str_get_str(args[2]);
void *sym = dlsym(self->handle, symname);
if (sym == NULL) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(errno)));
}
return make_func(args[1], sym, args[3]);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(ffimod_func_obj, 4, 4, ffimod_func);
STATIC mp_obj_t mod_ffi_func(mp_obj_t rettype, mp_obj_t addr_in, mp_obj_t argtypes) {
void *addr = (void*)mp_obj_int_get_truncated(addr_in);
return make_func(rettype, addr, argtypes);
}
MP_DEFINE_CONST_FUN_OBJ_3(mod_ffi_func_obj, mod_ffi_func);
STATIC void call_py_func(ffi_cif *cif, void *ret, void** args, mp_obj_t func) {
mp_obj_t pyargs[cif->nargs];
for (uint i = 0; i < cif->nargs; i++) {
@ -465,6 +476,7 @@ STATIC const mp_map_elem_t mp_module_ffi_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_ffi) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_open), (mp_obj_t)&mod_ffi_open_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_callback), (mp_obj_t)&mod_ffi_callback_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_func), (mp_obj_t)&mod_ffi_func_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_as_bytearray), (mp_obj_t)&mod_ffi_as_bytearray_obj },
};