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#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "mpqstr.h"
#include "obj.h"
#include "runtime.h"
#include "map.h"
typedef struct _mp_obj_set_t {
mp_obj_base_t base;
mp_set_t set;
} mp_obj_set_t;
typedef struct _mp_obj_set_it_t {
mp_obj_base_t base;
mp_obj_set_t *set;
machine_uint_t cur;
} mp_obj_set_it_t;
static mp_obj_t set_it_iternext(mp_obj_t self_in);
void set_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in) {
mp_obj_set_t *self = self_in;
bool first = true;
print(env, "{");
for (int i = 0; i < self->set.alloc; i++) {
if (self->set.table[i] != MP_OBJ_NULL) {
if (!first) {
print(env, ", ");
}
first = false;
mp_obj_print_helper(print, env, self->set.table[i]);
}
}
print(env, "}");
}
static mp_obj_t set_make_new(mp_obj_t type_in, int n_args, const mp_obj_t *args) {
switch (n_args) {
case 0:
// return a new, empty set
return mp_obj_new_set(0, NULL);
case 1:
{
// 1 argument, an iterable from which we make a new set
mp_obj_t set = mp_obj_new_set(0, NULL);
mp_obj_t iterable = rt_getiter(args[0]);
mp_obj_t item;
while ((item = rt_iternext(iterable)) != mp_const_stop_iteration) {
mp_obj_set_store(set, item);
}
return set;
}
default:
nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_TypeError, "set takes at most 1 argument, %d given", (void*)(machine_int_t)n_args));
}
}
const mp_obj_type_t set_it_type = {
{ &mp_const_type },
"set_iterator",
.iternext = set_it_iternext,
};
static mp_obj_t set_it_iternext(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_it_type));
mp_obj_set_it_t *self = self_in;
machine_uint_t max = self->set->set.alloc;
mp_obj_t *table = self->set->set.table;
for (machine_uint_t i = self->cur; i < max; i++) {
if (table[i] != NULL) {
self->cur = i + 1;
return table[i];
}
}
return mp_const_stop_iteration;
}
static mp_obj_t set_getiter(mp_obj_t set_in) {
mp_obj_set_it_t *o = m_new_obj(mp_obj_set_it_t);
o->base.type = &set_it_type;
o->set = (mp_obj_set_t *)set_in;
o->cur = 0;
return o;
}
/******************************************************************************/
/* set methods */
static mp_obj_t set_add(mp_obj_t self_in, mp_obj_t item) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
mp_set_lookup(&self->set, item, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_add_obj, set_add);
static mp_obj_t set_clear(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
mp_set_clear(&self->set);
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_1(set_clear_obj, set_clear);
static mp_obj_t set_copy(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
mp_obj_set_t *other = m_new_obj(mp_obj_set_t);
other->base.type = &set_type;
mp_set_init(&other->set, self->set.alloc);
other->set.used = self->set.used;
memcpy(other->set.table, self->set.table, self->set.alloc * sizeof(mp_obj_t));
return other;
}
static MP_DEFINE_CONST_FUN_OBJ_1(set_copy_obj, set_copy);
static mp_obj_t set_discard(mp_obj_t self_in, mp_obj_t item) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
mp_set_lookup(&self->set, item, MP_MAP_LOOKUP_REMOVE_IF_FOUND);
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_discard_obj, set_discard);
static mp_obj_t set_diff_int(int n_args, const mp_obj_t *args, bool update) {
assert(n_args > 0);
assert(MP_OBJ_IS_TYPE(args[0], &set_type));
mp_obj_set_t *self;
if (update) {
self = args[0];
} else {
self = set_copy(args[0]);
}
for (int i = 1; i < n_args; i++) {
mp_obj_t other = args[i];
if (self == other) {
set_clear(self);
} else {
mp_obj_t iter = rt_getiter(other);
mp_obj_t next;
while ((next = rt_iternext(iter)) != mp_const_stop_iteration) {
set_discard(self, next);
}
}
}
return self;
}
static mp_obj_t set_diff(int n_args, const mp_obj_t *args) {
return set_diff_int(n_args, args, false);
}
static MP_DEFINE_CONST_FUN_OBJ_VAR(set_diff_obj, 1, set_diff);
static mp_obj_t set_diff_update(int n_args, const mp_obj_t *args) {
set_diff_int(n_args, args, true);
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_VAR(set_diff_update_obj, 1, set_diff_update);
/******************************************************************************/
/* set constructors & public C API */
static const mp_method_t set_type_methods[] = {
{ "add", &set_add_obj },
{ "clear", &set_clear_obj },
{ "copy", &set_copy_obj },
{ "discard", &set_discard_obj },
{ "difference", &set_diff_obj },
{ "difference_update", &set_diff_update_obj },
{ NULL, NULL }, // end-of-list sentinel
};
const mp_obj_type_t set_type = {
{ &mp_const_type },
"set",
.print = set_print,
.make_new = set_make_new,
.getiter = set_getiter,
.methods = set_type_methods,
};
mp_obj_t mp_obj_new_set(int n_args, mp_obj_t *items) {
mp_obj_set_t *o = m_new_obj(mp_obj_set_t);
o->base.type = &set_type;
mp_set_init(&o->set, n_args);
for (int i = 0; i < n_args; i++) {
mp_set_lookup(&o->set, items[i], MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
}
return o;
}
void mp_obj_set_store(mp_obj_t self_in, mp_obj_t item) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
mp_set_lookup(&self->set, item, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
}
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