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a71c83a1d1
Ultimately all static strings should be qstr. This entry in the type structure is only used for printing error messages (to tell the type of the bad argument), and printing objects that don't supply a .print method.
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
#include <stdlib.h>
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#include <assert.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_filter_t {
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mp_obj_base_t base;
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mp_obj_t fun;
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mp_obj_t iter;
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} mp_obj_filter_t;
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STATIC mp_obj_t filter_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_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "filter expected 2 arguments"));
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}
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assert(n_args == 2);
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mp_obj_filter_t *o = m_new_obj(mp_obj_filter_t);
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o->base.type = &filter_type;
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o->fun = args[0];
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o->iter = rt_getiter(args[1]);
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return o;
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}
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STATIC mp_obj_t filter_iternext(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &filter_type));
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mp_obj_filter_t *self = self_in;
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mp_obj_t next;
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while ((next = rt_iternext(self->iter)) != mp_const_stop_iteration) {
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mp_obj_t val;
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if (self->fun != mp_const_none) {
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val = rt_call_function_n_kw(self->fun, 1, 0, &next);
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} else {
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val = next;
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}
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if (rt_is_true(val)) {
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return next;
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}
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}
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return mp_const_stop_iteration;
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}
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const mp_obj_type_t filter_type = {
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{ &mp_const_type },
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.name = MP_QSTR_filter,
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.make_new = filter_make_new,
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.getiter = mp_identity,
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.iternext = filter_iternext,
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};
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