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Copy pathobjboundmeth.c
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107 lines (97 loc) · 3.63 KB
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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include "py/obj.h"
#include "py/runtime.h"
typedef struct _mp_obj_bound_meth_t {
mp_obj_base_t base;
mp_obj_t meth;
mp_obj_t self;
} mp_obj_bound_meth_t;
#if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
STATIC void bound_meth_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
(void)kind;
mp_obj_bound_meth_t *o = MP_OBJ_TO_PTR(o_in);
mp_printf(print, "<bound_method %p ", o);
mp_obj_print_helper(print, o->self, PRINT_REPR);
mp_print_str(print, ".");
mp_obj_print_helper(print, o->meth, PRINT_REPR);
mp_print_str(print, ">");
}
#endif
STATIC mp_obj_t bound_meth_call(mp_obj_t self_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_obj_bound_meth_t *self = MP_OBJ_TO_PTR(self_in);
// need to insert self->self before all other args and then call self->meth
size_t n_total = n_args + 2 * n_kw;
mp_obj_t *args2 = NULL;
mp_obj_t *free_args2 = NULL;
if (n_total > 4) {
// try to use heap to allocate temporary args array
args2 = m_new_maybe(mp_obj_t, 1 + n_total);
free_args2 = args2;
}
if (args2 == NULL) {
// (fallback to) use stack to allocate temporary args array
args2 = alloca(sizeof(mp_obj_t) * (1 + n_total));
}
args2[0] = self->self;
memcpy(args2 + 1, args, n_total * sizeof(mp_obj_t));
mp_obj_t res = mp_call_function_n_kw(self->meth, n_args + 1, n_kw, &args2[0]);
if (free_args2 != NULL) {
m_del(mp_obj_t, free_args2, 1 + n_total);
}
return res;
}
#if MICROPY_PY_FUNCTION_ATTRS
STATIC void bound_meth_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
if (dest[0] != MP_OBJ_NULL) {
// not load attribute
return;
}
if (attr == MP_QSTR___name__) {
mp_obj_bound_meth_t *o = MP_OBJ_TO_PTR(self_in);
dest[0] = MP_OBJ_NEW_QSTR(mp_obj_fun_get_name(o->meth));
}
}
#endif
STATIC const mp_obj_type_t mp_type_bound_meth = {
{ &mp_type_type },
.name = MP_QSTR_bound_method,
#if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
.print = bound_meth_print,
#endif
.call = bound_meth_call,
#if MICROPY_PY_FUNCTION_ATTRS
.attr = bound_meth_attr,
#endif
};
mp_obj_t mp_obj_new_bound_meth(mp_obj_t meth, mp_obj_t self) {
mp_obj_bound_meth_t *o = m_new_obj(mp_obj_bound_meth_t);
o->base.type = &mp_type_bound_meth;
o->meth = meth;
o->self = self;
return MP_OBJ_FROM_PTR(o);
}