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#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "obj.h"
#include "runtime.h"
typedef struct _mp_obj_closure_t {
mp_obj_base_t base;
mp_obj_t fun;
uint n_closed;
mp_obj_t *closed;
} mp_obj_closure_t;
mp_obj_t closure_call(mp_obj_t self_in, uint n_args, uint n_kw, const mp_obj_t *args) {
mp_obj_closure_t *self = self_in;
// need to concatenate closed-over-vars and args
int n_total = self->n_closed + n_args + 2 * n_kw;
if (n_total <= 5) {
// use stack to allocate temporary args array
mp_obj_t args2[5];
memcpy(args2, self->closed, self->n_closed * sizeof(mp_obj_t));
memcpy(args2 + self->n_closed, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
return rt_call_function_n_kw(self->fun, self->n_closed + n_args, n_kw, args2);
} else {
// use heap to allocate temporary args array
mp_obj_t *args2 = m_new(mp_obj_t, n_total);
memcpy(args2, self->closed, self->n_closed * sizeof(mp_obj_t));
memcpy(args2 + self->n_closed, args, (n_args + 2 * n_kw) * sizeof(mp_obj_t));
mp_obj_t res = rt_call_function_n_kw(self->fun, self->n_closed + n_args, n_kw, args2);
m_del(mp_obj_t, args2, n_total);
return res;
}
}
const mp_obj_type_t closure_type = {
{ &mp_const_type },
"closure",
.call = closure_call,
};
mp_obj_t mp_obj_new_closure(mp_obj_t fun, mp_obj_t closure_tuple) {
mp_obj_closure_t *o = m_new_obj(mp_obj_closure_t);
o->base.type = &closure_type;
o->fun = fun;
mp_obj_tuple_get(closure_tuple, &o->n_closed, &o->closed);
return o;
}
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