55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#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;
|
|
}
|