52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
#include <string.h>
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#include "nlr.h"
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "obj.h"
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#include "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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mp_obj_t bound_meth_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_t *args) {
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mp_obj_bound_meth_t *self = self_in;
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// need to insert self->self before all other args and then call self->meth
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int n_total = n_args + 2 * n_kw;
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if (n_total <= 4) {
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// use stack to allocate temporary args array
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mp_obj_t args2[5];
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args2[0] = self->self;
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memcpy(args2 + 1, args, n_total * sizeof(mp_obj_t));
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return rt_call_function_n_kw(self->meth, n_args + 1, n_kw, &args2[0]);
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} else {
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// use heap to allocate temporary args array
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mp_obj_t *args2 = m_new(mp_obj_t, 1 + n_total);
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args2[0] = self->self;
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memcpy(args2 + 1, args, n_total * sizeof(mp_obj_t));
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mp_obj_t res = rt_call_function_n_kw(self->meth, n_args + 1, n_kw, &args2[0]);
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m_del(mp_obj_t, args2, 1 + n_total);
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return res;
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}
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}
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const mp_obj_type_t bound_meth_type = {
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{ &mp_type_type },
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.name = MP_QSTR_bound_method,
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.call = bound_meth_call,
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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 = &bound_meth_type;
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o->meth = meth;
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o->self = self;
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return o;
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}
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