60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
#include <stdlib.h>
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#include <assert.h>
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#include "mpconfig.h"
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#include "nlr.h"
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#include "misc.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_map_t {
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mp_obj_base_t base;
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machine_uint_t n_iters;
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mp_obj_t fun;
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mp_obj_t iters[];
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} mp_obj_map_t;
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STATIC mp_obj_t map_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
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if (n_args < 2 || n_kw != 0) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "map must have at least 2 arguments and no keyword arguments"));
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}
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assert(n_args >= 2);
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mp_obj_map_t *o = m_new_obj_var(mp_obj_map_t, mp_obj_t, n_args - 1);
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o->base.type = &mp_type_map;
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o->n_iters = n_args - 1;
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o->fun = args[0];
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for (int i = 0; i < n_args - 1; i++) {
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o->iters[i] = mp_getiter(args[i + 1]);
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}
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return o;
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}
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STATIC mp_obj_t map_getiter(mp_obj_t self_in) {
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return self_in;
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}
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STATIC mp_obj_t map_iternext(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_map));
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mp_obj_map_t *self = self_in;
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mp_obj_t *nextses = m_new(mp_obj_t, self->n_iters);
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for (int i = 0; i < self->n_iters; i++) {
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mp_obj_t next = mp_iternext(self->iters[i]);
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if (next == MP_OBJ_STOP_ITERATION) {
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m_del(mp_obj_t, nextses, self->n_iters);
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return MP_OBJ_STOP_ITERATION;
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}
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nextses[i] = next;
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}
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return mp_call_function_n_kw(self->fun, self->n_iters, 0, nextses);
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}
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const mp_obj_type_t mp_type_map = {
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{ &mp_type_type },
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.name = MP_QSTR_map,
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.make_new = map_make_new,
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.getiter = map_getiter,
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.iternext = map_iternext,
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};
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