53 lines
1.6 KiB
C
53 lines
1.6 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_closure_t {
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mp_obj_base_t base;
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mp_obj_t fun;
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uint n_closed;
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mp_obj_t *closed;
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} mp_obj_closure_t;
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mp_obj_t closure_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_t *args) {
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mp_obj_closure_t *self = self_in;
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// need to concatenate closed-over-vars and args
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int n_total = self->n_closed + n_args + 2 * n_kw;
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if (n_total <= 5) {
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// use stack to allocate temporary args array
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mp_obj_t args2[5];
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memcpy(args2, self->closed, self->n_closed * sizeof(mp_obj_t));
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memcpy(args2 + self->n_closed, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
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return rt_call_function_n_kw(self->fun, self->n_closed + n_args, n_kw, args2);
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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, n_total);
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memcpy(args2, self->closed, self->n_closed * sizeof(mp_obj_t));
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memcpy(args2 + self->n_closed, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
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mp_obj_t res = rt_call_function_n_kw(self->fun, self->n_closed + n_args, n_kw, args2);
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m_del(mp_obj_t, args2, 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 closure_type = {
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{ &mp_type_type },
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.name = MP_QSTR_closure,
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.call = closure_call,
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};
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mp_obj_t mp_obj_new_closure(mp_obj_t fun, mp_obj_t closure_tuple) {
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mp_obj_closure_t *o = m_new_obj(mp_obj_closure_t);
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o->base.type = &closure_type;
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o->fun = fun;
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mp_obj_tuple_get(closure_tuple, &o->n_closed, &o->closed);
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return o;
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}
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