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Copy pathobjrange.c
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88 lines (77 loc) · 2.29 KB
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#include <stdlib.h>
#include <stdint.h>
#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "obj.h"
/******************************************************************************/
/* range */
typedef struct _mp_obj_range_t {
mp_obj_base_t base;
// TODO make these values generic objects or something
machine_int_t start;
machine_int_t stop;
machine_int_t step;
} mp_obj_range_t;
mp_obj_t range_getiter(mp_obj_t o_in) {
mp_obj_range_t *o = o_in;
return mp_obj_new_range_iterator(o->start, o->stop, o->step);
}
static const mp_obj_type_t range_type = {
{ &mp_const_type} ,
"range",
NULL, // print
NULL, // call_n
NULL, // unary_op
NULL, // binary_op
range_getiter,
NULL, // iternext
{{NULL, NULL},}, // method list
};
// range is a class and instances are immutable sequence objects
mp_obj_t mp_obj_new_range(int start, int stop, int step) {
mp_obj_range_t *o = m_new_obj(mp_obj_range_t);
o->base.type = &range_type;
o->start = start;
o->stop = stop;
o->step = step;
return o;
}
/******************************************************************************/
/* range iterator */
typedef struct _mp_obj_range_it_t {
mp_obj_base_t base;
// TODO make these values generic objects or something
machine_int_t cur;
machine_int_t stop;
machine_int_t step;
} mp_obj_range_it_t;
mp_obj_t range_it_iternext(mp_obj_t o_in) {
mp_obj_range_it_t *o = o_in;
if ((o->step > 0 && o->cur < o->stop) || (o->step < 0 && o->cur > o->stop)) {
mp_obj_t o_out = MP_OBJ_NEW_SMALL_INT(o->cur);
o->cur += o->step;
return o_out;
} else {
return mp_const_stop_iteration;
}
}
static const mp_obj_type_t range_it_type = {
{ &mp_const_type },
"range_iterator",
NULL, // print
NULL, // call_n
NULL, // unary_op
NULL, // binary_op
NULL, // getiter
range_it_iternext,
{{NULL, NULL},}, // method list
};
mp_obj_t mp_obj_new_range_iterator(int cur, int stop, int step) {
mp_obj_range_it_t *o = m_new_obj(mp_obj_range_it_t);
o->base.type = &range_it_type;
o->cur = cur;
o->stop = stop;
o->step = step;
return o;
}