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micropython/py/objset.c

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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 "qstr.h"
#include "obj.h"
#include "runtime.h"
#include "runtime0.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_print_kind_t kind) {
mp_obj_set_t *self = self_in;
if (self->set.used == 0) {
print(env, "set()");
return;
}
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_REPR);
}
}
print(env, "}");
}
static mp_obj_t set_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
// TODO check n_kw == 0
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 - 1);
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(uint 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(uint 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);
static mp_obj_t set_intersect_int(mp_obj_t self_in, mp_obj_t other, bool update) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
if (self_in == other) {
return update ? mp_const_none : set_copy(self_in);
}
mp_obj_set_t *self = self_in;
mp_obj_set_t *out = mp_obj_new_set(0, NULL);
mp_obj_t iter = rt_getiter(other);
mp_obj_t next;
while ((next = rt_iternext(iter)) != mp_const_stop_iteration) {
if (mp_set_lookup(&self->set, next, MP_MAP_LOOKUP)) {
set_add(out, next);
}
}
if (update) {
m_del(mp_obj_t, self->set.table, self->set.alloc);
self->set.alloc = out->set.alloc;
self->set.used = out->set.used;
self->set.table = out->set.table;
}
return update ? mp_const_none : out;
}
static mp_obj_t set_intersect(mp_obj_t self_in, mp_obj_t other) {
return set_intersect_int(self_in, other, false);
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_intersect_obj, set_intersect);
static mp_obj_t set_intersect_update(mp_obj_t self_in, mp_obj_t other) {
return set_intersect_int(self_in, other, true);
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_intersect_update_obj, set_intersect_update);
static mp_obj_t set_isdisjoint(mp_obj_t self_in, mp_obj_t other) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
mp_obj_t iter = rt_getiter(other);
mp_obj_t next;
while ((next = rt_iternext(iter)) != mp_const_stop_iteration) {
if (mp_set_lookup(&self->set, next, MP_MAP_LOOKUP)) {
return mp_const_false;
}
}
return mp_const_true;
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_isdisjoint_obj, set_isdisjoint);
static mp_obj_t set_issubset_internal(mp_obj_t self_in, mp_obj_t other_in, bool proper) {
mp_obj_set_t *self;
bool cleanup_self = false;
if (MP_OBJ_IS_TYPE(self_in, &set_type)) {
self = self_in;
} else {
self = set_make_new((mp_obj_t)&set_type, 1, 0, &self_in);
cleanup_self = true;
}
mp_obj_set_t *other;
bool cleanup_other = false;
if (MP_OBJ_IS_TYPE(other_in, &set_type)) {
other = other_in;
} else {
other = set_make_new((mp_obj_t)&set_type, 1, 0, &other_in);
cleanup_other = true;
}
bool out = true;
if (proper && self->set.used == other->set.used) {
out = false;
} else {
mp_obj_t iter = set_getiter(self);
mp_obj_t next;
while ((next = set_it_iternext(iter)) != mp_const_stop_iteration) {
if (!mp_set_lookup(&other->set, next, MP_MAP_LOOKUP)) {
out = false;
break;
}
}
}
if (cleanup_self) {
set_clear(self);
}
if (cleanup_other) {
set_clear(other);
}
return MP_BOOL(out);
}
static mp_obj_t set_issubset(mp_obj_t self_in, mp_obj_t other_in) {
return set_issubset_internal(self_in, other_in, false);
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_issubset_obj, set_issubset);
static mp_obj_t set_issubset_proper(mp_obj_t self_in, mp_obj_t other_in) {
return set_issubset_internal(self_in, other_in, true);
}
static mp_obj_t set_issuperset(mp_obj_t self_in, mp_obj_t other_in) {
return set_issubset_internal(other_in, self_in, false);
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_issuperset_obj, set_issuperset);
static mp_obj_t set_issuperset_proper(mp_obj_t self_in, mp_obj_t other_in) {
return set_issubset_internal(other_in, self_in, true);
}
static mp_obj_t set_equal(mp_obj_t self_in, mp_obj_t other_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
if (!MP_OBJ_IS_TYPE(other_in, &set_type)) {
return mp_const_false;
}
mp_obj_set_t *other = other_in;
if (self->set.used != other->set.used) {
return mp_const_false;
}
return set_issubset(self_in, other_in);
}
static mp_obj_t set_pop(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
if (self->set.used == 0) {
nlr_jump(mp_obj_new_exception_msg(MP_QSTR_KeyError, "pop from an empty set"));
}
mp_obj_t obj = mp_set_lookup(&self->set, NULL,
MP_MAP_LOOKUP_REMOVE_IF_FOUND | MP_MAP_LOOKUP_FIRST);
return obj;
}
static MP_DEFINE_CONST_FUN_OBJ_1(set_pop_obj, set_pop);
static mp_obj_t set_remove(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;
if (mp_set_lookup(&self->set, item, MP_MAP_LOOKUP_REMOVE_IF_FOUND) == MP_OBJ_NULL) {
nlr_jump(mp_obj_new_exception(MP_QSTR_KeyError));
}
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_remove_obj, set_remove);
static mp_obj_t set_symmetric_difference_update(mp_obj_t self_in, mp_obj_t other_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = self_in;
mp_obj_t iter = rt_getiter(other_in);
mp_obj_t next;
while ((next = rt_iternext(iter)) != mp_const_stop_iteration) {
mp_set_lookup(&self->set, next, MP_MAP_LOOKUP_REMOVE_IF_FOUND | MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
}
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_symmetric_difference_update_obj, set_symmetric_difference_update);
static mp_obj_t set_symmetric_difference(mp_obj_t self_in, mp_obj_t other_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
self_in = set_copy(self_in);
set_symmetric_difference_update(self_in, other_in);
return self_in;
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_symmetric_difference_obj, set_symmetric_difference);
static void set_update_int(mp_obj_set_t *self, mp_obj_t other_in) {
mp_obj_t iter = rt_getiter(other_in);
mp_obj_t next;
while ((next = rt_iternext(iter)) != mp_const_stop_iteration) {
mp_set_lookup(&self->set, next, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
}
}
static mp_obj_t set_update(uint n_args, const mp_obj_t *args) {
assert(n_args > 0);
assert(MP_OBJ_IS_TYPE(args[0], &set_type));
for (int i = 1; i < n_args; i++) {
set_update_int(args[0], args[i]);
}
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_VAR(set_update_obj, 1, set_update);
static mp_obj_t set_union(mp_obj_t self_in, mp_obj_t other_in) {
assert(MP_OBJ_IS_TYPE(self_in, &set_type));
mp_obj_set_t *self = set_copy(self_in);
set_update_int(self, other_in);
return self;
}
static MP_DEFINE_CONST_FUN_OBJ_2(set_union_obj, set_union);
static mp_obj_t set_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
mp_obj_t args[] = {lhs, rhs};
switch (op) {
case RT_BINARY_OP_OR:
return set_union(lhs, rhs);
case RT_BINARY_OP_XOR:
return set_symmetric_difference(lhs, rhs);
case RT_BINARY_OP_AND:
return set_intersect(lhs, rhs);
case RT_BINARY_OP_SUBTRACT:
return set_diff(2, args);
case RT_BINARY_OP_INPLACE_OR:
return set_union(lhs, rhs);
case RT_BINARY_OP_INPLACE_XOR:
return set_symmetric_difference(lhs, rhs);
case RT_BINARY_OP_INPLACE_AND:
return set_intersect(lhs, rhs);
case RT_BINARY_OP_INPLACE_SUBTRACT:
return set_diff(2, args);
case RT_BINARY_OP_LESS:
return set_issubset_proper(lhs, rhs);
case RT_BINARY_OP_MORE:
return set_issuperset_proper(lhs, rhs);
case RT_BINARY_OP_EQUAL:
return set_equal(lhs, rhs);
case RT_BINARY_OP_LESS_EQUAL:
return set_issubset(lhs, rhs);
case RT_BINARY_OP_MORE_EQUAL:
return set_issuperset(lhs, rhs);
case RT_BINARY_OP_NOT_EQUAL:
return MP_BOOL(set_equal(lhs, rhs) == mp_const_false);
case RT_BINARY_OP_IN:
{
mp_obj_set_t *o = lhs;
mp_obj_t elem = mp_set_lookup(&o->set, rhs, MP_MAP_LOOKUP);
return MP_BOOL(elem != NULL);
}
default:
// op not supported
return NULL;
}
}
/******************************************************************************/
/* 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 },
{ "intersection", &set_intersect_obj },
{ "intersection_update", &set_intersect_update_obj },
{ "isdisjoint", &set_isdisjoint_obj },
{ "issubset", &set_issubset_obj },
{ "issuperset", &set_issuperset_obj },
{ "pop", &set_pop_obj },
{ "remove", &set_remove_obj },
{ "symmetric_difference", &set_symmetric_difference_obj },
{ "symmetric_difference_update", &set_symmetric_difference_update_obj },
{ "union", &set_union_obj },
{ "update", &set_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,
.binary_op = set_binary_op,
.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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