72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
#include <string.h>
|
|
|
|
#include "mpconfig.h"
|
|
#include "nlr.h"
|
|
#include "misc.h"
|
|
#include "qstr.h"
|
|
#include "obj.h"
|
|
#include "objtuple.h"
|
|
#include "runtime.h"
|
|
|
|
typedef struct _mp_obj_closure_t {
|
|
mp_obj_base_t base;
|
|
mp_obj_t fun;
|
|
machine_uint_t 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 mp_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 = mp_call_function_n_kw(self->fun, self->n_closed + n_args, n_kw, args2);
|
|
m_del(mp_obj_t, args2, n_total);
|
|
return res;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
STATIC void closure_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
|
|
mp_obj_closure_t *o = o_in;
|
|
print(env, "<closure %p, n_closed=%u ", o, o->n_closed);
|
|
for (int i = 0; i < o->n_closed; i++) {
|
|
if (o->closed[i] == MP_OBJ_NULL) {
|
|
print(env, "(nil)");
|
|
} else {
|
|
mp_obj_print_helper(print, env, o->closed[i], PRINT_REPR);
|
|
}
|
|
print(env, " ");
|
|
}
|
|
print(env, ">");
|
|
}
|
|
#endif
|
|
|
|
const mp_obj_type_t closure_type = {
|
|
{ &mp_type_type },
|
|
.name = MP_QSTR_closure,
|
|
//.print = closure_print,
|
|
.call = closure_call,
|
|
};
|
|
|
|
mp_obj_t mp_obj_new_closure(mp_obj_t fun, uint n_closed_over, const mp_obj_t *closed) {
|
|
mp_obj_closure_t *o = m_new_obj_var(mp_obj_closure_t, mp_obj_t, n_closed_over);
|
|
o->base.type = &closure_type;
|
|
o->fun = fun;
|
|
o->n_closed = n_closed_over;
|
|
memcpy(o->closed, closed, n_closed_over * sizeof(mp_obj_t));
|
|
return o;
|
|
}
|