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