micropython/py/objboundmeth.c

89 lines
3.2 KiB
C

/*
* 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(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
(void)kind;
mp_obj_bound_meth_t *o = o_in;
print(env, "<bound_method %p ", o);
mp_obj_print_helper(print, env, o->self, PRINT_REPR);
print(env, ".");
mp_obj_print_helper(print, env, o->meth, PRINT_REPR);
print(env, ">");
}
#endif
STATIC mp_obj_t bound_meth_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
mp_obj_bound_meth_t *self = self_in;
// need to insert self->self before all other args and then call self->meth
mp_uint_t n_total = n_args + 2 * n_kw;
if (n_total <= 4) {
// use stack to allocate temporary args array
mp_obj_t args2[5];
args2[0] = self->self;
memcpy(args2 + 1, args, n_total * sizeof(mp_obj_t));
return mp_call_function_n_kw(self->meth, n_args + 1, n_kw, &args2[0]);
} else {
// use heap to allocate temporary args array
mp_obj_t *args2 = m_new(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]);
m_del(mp_obj_t, args2, 1 + n_total);
return res;
}
}
const mp_obj_type_t bound_meth_type = {
{ &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,
};
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 = &bound_meth_type;
o->meth = meth;
o->self = self;
return o;
}