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micropython/py/objdict.c
Damien George 04b9147e15 Add license header to (almost) all files. 
Blanket wide to all .c and .h files.  Some files originating from ST are
difficult to deal with (license wise) so it was left out of those.

Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
2014-05-03 23:27:38 +01:00

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdbool.h>
#include <string.h>
#include <assert.h>
#include "mpconfig.h"
#include "nlr.h"
#include "misc.h"
#include "qstr.h"
#include "obj.h"
#include "objtuple.h"
#include "runtime0.h"
#include "runtime.h"
#include "builtin.h"
STATIC mp_obj_t mp_obj_new_dict_iterator(mp_obj_dict_t *dict, int cur);
STATIC mp_map_elem_t *dict_it_iternext_elem(mp_obj_t self_in);
STATIC mp_obj_t dict_copy(mp_obj_t self_in);
STATIC void dict_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
mp_obj_dict_t *self = self_in;
bool first = true;
print(env, "{");
mp_obj_t *dict_iter = mp_obj_new_dict_iterator(self, 0);
mp_map_elem_t *next = NULL;
while ((next = dict_it_iternext_elem(dict_iter)) != MP_OBJ_STOP_ITERATION) {
if (!first) {
print(env, ", ");
}
first = false;
mp_obj_print_helper(print, env, next->key, PRINT_REPR);
print(env, ": ");
mp_obj_print_helper(print, env, next->value, PRINT_REPR);
}
print(env, "}");
}
STATIC mp_obj_t dict_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
mp_obj_t dict;
switch (n_args) {
case 0:
dict = mp_obj_new_dict(0);
break;
case 1: {
if (MP_OBJ_IS_TYPE(args[0], &mp_type_dict)) {
return dict_copy(args[0]);
}
// TODO create dict from an arbitrary mapping!
// Make dict from iterable of pairs
mp_obj_t iterable = mp_getiter(args[0]);
mp_obj_t dict = mp_obj_new_dict(0);
// TODO: support arbitrary seq as a pair
mp_obj_t item;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
mp_obj_t *sub_items;
mp_obj_get_array_fixed_n(item, 2, &sub_items);
mp_obj_dict_store(dict, sub_items[0], sub_items[1]);
}
return dict;
}
default:
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "dict takes at most 1 argument"));
}
// add to the new dict any keyword args
for (const mp_obj_t *a = args + n_args; n_kw > 0; n_kw--, a += 2) {
mp_obj_dict_store(dict, a[0], a[1]);
}
return dict;
}
STATIC mp_obj_t dict_unary_op(int op, mp_obj_t self_in) {
mp_obj_dict_t *self = self_in;
switch (op) {
case MP_UNARY_OP_BOOL: return MP_BOOL(self->map.used != 0);
case MP_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT((machine_int_t)self->map.used);
default: return MP_OBJ_NOT_SUPPORTED;
}
}
STATIC mp_obj_t dict_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
mp_obj_dict_t *o = lhs_in;
switch (op) {
case MP_BINARY_OP_IN: {
mp_map_elem_t *elem = mp_map_lookup(&o->map, rhs_in, MP_MAP_LOOKUP);
return MP_BOOL(elem != NULL);
}
case MP_BINARY_OP_EQUAL: {
if (MP_OBJ_IS_TYPE(rhs_in, &mp_type_dict)) {
mp_obj_dict_t *rhs = rhs_in;
if (o->map.used != rhs->map.used) {
return mp_const_false;
}
machine_uint_t size = o->map.alloc;
mp_map_t *map = &o->map;
for (machine_uint_t i = 0; i < size; i++) {
if (MP_MAP_SLOT_IS_FILLED(map, i)) {
mp_map_elem_t *elem = mp_map_lookup(&rhs->map, map->table[i].key, MP_MAP_LOOKUP);
if (elem == NULL || !mp_obj_equal(map->table[i].value, elem->value)) {
return mp_const_false;
}
}
}
return mp_const_true;
} else {
// dict is not equal to instance of any other type
return mp_const_false;
}
}
default:
// op not supported
return MP_OBJ_NOT_SUPPORTED;
}
}
STATIC mp_obj_t dict_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
if (value == MP_OBJ_NULL) {
// delete
mp_obj_dict_delete(self_in, index);
return mp_const_none;
} else if (value == MP_OBJ_SENTINEL) {
// load
mp_obj_dict_t *self = self_in;
mp_map_elem_t *elem = mp_map_lookup(&self->map, index, MP_MAP_LOOKUP);
if (elem == NULL) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_KeyError, "<value>"));
} else {
return elem->value;
}
} else {
// store
mp_obj_dict_store(self_in, index, value);
return mp_const_none;
}
}
/******************************************************************************/
/* dict iterator */
typedef struct _mp_obj_dict_it_t {
mp_obj_base_t base;
mp_obj_dict_t *dict;
machine_uint_t cur;
} mp_obj_dict_it_t;
STATIC mp_map_elem_t *dict_it_iternext_elem(mp_obj_t self_in) {
mp_obj_dict_it_t *self = self_in;
machine_uint_t max = self->dict->map.alloc;
mp_map_t *map = &self->dict->map;
for (int i = self->cur; i < max; i++) {
if (MP_MAP_SLOT_IS_FILLED(map, i)) {
self->cur = i + 1;
return &(map->table[i]);
}
}
return MP_OBJ_STOP_ITERATION;
}
mp_obj_t dict_it_iternext(mp_obj_t self_in) {
mp_map_elem_t *next = dict_it_iternext_elem(self_in);
if (next != MP_OBJ_STOP_ITERATION) {
return next->key;
} else {
return MP_OBJ_STOP_ITERATION;
}
}
STATIC const mp_obj_type_t mp_type_dict_it = {
{ &mp_type_type },
.name = MP_QSTR_iterator,
.getiter = mp_identity,
.iternext = dict_it_iternext,
};
STATIC mp_obj_t mp_obj_new_dict_iterator(mp_obj_dict_t *dict, int cur) {
mp_obj_dict_it_t *o = m_new_obj(mp_obj_dict_it_t);
o->base.type = &mp_type_dict_it;
o->dict = dict;
o->cur = cur;
return o;
}
STATIC mp_obj_t dict_getiter(mp_obj_t o_in) {
return mp_obj_new_dict_iterator(o_in, 0);
}
/******************************************************************************/
/* dict methods */
STATIC mp_obj_t dict_clear(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
mp_map_clear(&self->map);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(dict_clear_obj, dict_clear);
STATIC mp_obj_t dict_copy(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
mp_obj_dict_t *other = mp_obj_new_dict(self->map.alloc);
other->map.used = self->map.used;
other->map.all_keys_are_qstrs = self->map.all_keys_are_qstrs;
other->map.table_is_fixed_array = 0;
memcpy(other->map.table, self->map.table, self->map.alloc * sizeof(mp_map_elem_t));
return other;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(dict_copy_obj, dict_copy);
// this is a classmethod
STATIC mp_obj_t dict_fromkeys(uint n_args, const mp_obj_t *args) {
assert(2 <= n_args && n_args <= 3);
mp_obj_t iter = mp_getiter(args[1]);
mp_obj_t len = mp_obj_len_maybe(iter);
mp_obj_t value = mp_const_none;
mp_obj_t next = NULL;
mp_obj_dict_t *self = NULL;
if (n_args > 2) {
value = args[2];
}
if (len == MP_OBJ_NULL) {
/* object's type doesn't have a __len__ slot */
self = mp_obj_new_dict(0);
} else {
self = mp_obj_new_dict(MP_OBJ_SMALL_INT_VALUE(len));
}
while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
mp_map_lookup(&self->map, next, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = value;
}
return self;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(dict_fromkeys_fun_obj, 2, 3, dict_fromkeys);
STATIC MP_DEFINE_CONST_CLASSMETHOD_OBJ(dict_fromkeys_obj, (const mp_obj_t)&dict_fromkeys_fun_obj);
STATIC mp_obj_t dict_get_helper(mp_map_t *self, mp_obj_t key, mp_obj_t deflt, mp_map_lookup_kind_t lookup_kind) {
mp_map_elem_t *elem = mp_map_lookup(self, key, lookup_kind);
mp_obj_t value;
if (elem == NULL || elem->value == NULL) {
if (deflt == NULL) {
if (lookup_kind == MP_MAP_LOOKUP_REMOVE_IF_FOUND) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_KeyError, "<value>"));
} else {
value = mp_const_none;
}
} else {
value = deflt;
}
} else {
value = elem->value;
}
if (lookup_kind == MP_MAP_LOOKUP_ADD_IF_NOT_FOUND) {
elem->value = value;
}
return value;
}
STATIC mp_obj_t dict_get(uint n_args, const mp_obj_t *args) {
assert(2 <= n_args && n_args <= 3);
assert(MP_OBJ_IS_TYPE(args[0], &mp_type_dict));
return dict_get_helper(&((mp_obj_dict_t *)args[0])->map,
args[1],
n_args == 3 ? args[2] : NULL,
MP_MAP_LOOKUP);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(dict_get_obj, 2, 3, dict_get);
STATIC mp_obj_t dict_pop(uint n_args, const mp_obj_t *args) {
assert(2 <= n_args && n_args <= 3);
assert(MP_OBJ_IS_TYPE(args[0], &mp_type_dict));
return dict_get_helper(&((mp_obj_dict_t *)args[0])->map,
args[1],
n_args == 3 ? args[2] : NULL,
MP_MAP_LOOKUP_REMOVE_IF_FOUND);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(dict_pop_obj, 2, 3, dict_pop);
STATIC mp_obj_t dict_setdefault(uint n_args, const mp_obj_t *args) {
assert(2 <= n_args && n_args <= 3);
assert(MP_OBJ_IS_TYPE(args[0], &mp_type_dict));
return dict_get_helper(&((mp_obj_dict_t *)args[0])->map,
args[1],
n_args == 3 ? args[2] : NULL,
MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(dict_setdefault_obj, 2, 3, dict_setdefault);
STATIC mp_obj_t dict_popitem(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
if (self->map.used == 0) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_KeyError, "popitem(): dictionary is empty"));
}
mp_obj_dict_it_t *iter = mp_obj_new_dict_iterator(self, 0);
mp_map_elem_t *next = dict_it_iternext_elem(iter);
self->map.used--;
mp_obj_t items[] = {next->key, next->value};
next->key = NULL;
next->value = NULL;
mp_obj_t tuple = mp_obj_new_tuple(2, items);
return tuple;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(dict_popitem_obj, dict_popitem);
STATIC mp_obj_t dict_update(mp_obj_t self_in, mp_obj_t iterable) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
/* TODO: check for the "keys" method */
mp_obj_t iter = mp_getiter(iterable);
mp_obj_t next = NULL;
while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
mp_obj_t inneriter = mp_getiter(next);
mp_obj_t key = mp_iternext(inneriter);
mp_obj_t value = mp_iternext(inneriter);
mp_obj_t stop = mp_iternext(inneriter);
if (key == MP_OBJ_STOP_ITERATION
|| value == MP_OBJ_STOP_ITERATION
|| stop != MP_OBJ_STOP_ITERATION) {
nlr_raise(mp_obj_new_exception_msg(
&mp_type_ValueError,
"dictionary update sequence has the wrong length"));
} else {
mp_map_lookup(&self->map, key, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = value;
}
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(dict_update_obj, dict_update);
/******************************************************************************/
/* dict views */
STATIC const mp_obj_type_t dict_view_type;
STATIC const mp_obj_type_t dict_view_it_type;
typedef enum _mp_dict_view_kind_t {
MP_DICT_VIEW_ITEMS,
MP_DICT_VIEW_KEYS,
MP_DICT_VIEW_VALUES,
} mp_dict_view_kind_t;
STATIC char *mp_dict_view_names[] = {"dict_items", "dict_keys", "dict_values"};
typedef struct _mp_obj_dict_view_it_t {
mp_obj_base_t base;
mp_dict_view_kind_t kind;
mp_obj_dict_it_t *iter;
machine_uint_t cur;
} mp_obj_dict_view_it_t;
typedef struct _mp_obj_dict_view_t {
mp_obj_base_t base;
mp_obj_dict_t *dict;
mp_dict_view_kind_t kind;
} mp_obj_dict_view_t;
STATIC mp_obj_t dict_view_it_iternext(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &dict_view_it_type));
mp_obj_dict_view_it_t *self = self_in;
mp_map_elem_t *next = dict_it_iternext_elem(self->iter);
if (next != MP_OBJ_STOP_ITERATION) {
switch (self->kind) {
case MP_DICT_VIEW_ITEMS:
{
mp_obj_t items[] = {next->key, next->value};
return mp_obj_new_tuple(2, items);
}
case MP_DICT_VIEW_KEYS:
return next->key;
case MP_DICT_VIEW_VALUES:
return next->value;
default:
assert(0); /* can't happen */
return mp_const_none;
}
} else {
return MP_OBJ_STOP_ITERATION;
}
}
STATIC const mp_obj_type_t dict_view_it_type = {
{ &mp_type_type },
.name = MP_QSTR_iterator,
.getiter = mp_identity,
.iternext = dict_view_it_iternext,
};
STATIC mp_obj_t dict_view_getiter(mp_obj_t view_in) {
assert(MP_OBJ_IS_TYPE(view_in, &dict_view_type));
mp_obj_dict_view_t *view = view_in;
mp_obj_dict_view_it_t *o = m_new_obj(mp_obj_dict_view_it_t);
o->base.type = &dict_view_it_type;
o->kind = view->kind;
o->iter = mp_obj_new_dict_iterator(view->dict, 0);
return o;
}
STATIC void dict_view_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
assert(MP_OBJ_IS_TYPE(self_in, &dict_view_type));
mp_obj_dict_view_t *self = self_in;
bool first = true;
print(env, mp_dict_view_names[self->kind]);
print(env, "([");
mp_obj_t *self_iter = dict_view_getiter(self);
mp_obj_t *next = NULL;
while ((next = dict_view_it_iternext(self_iter)) != MP_OBJ_STOP_ITERATION) {
if (!first) {
print(env, ", ");
}
first = false;
mp_obj_print_helper(print, env, next, PRINT_REPR);
}
print(env, "])");
}
STATIC mp_obj_t dict_view_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
/* only supported for the 'keys' kind until sets and dicts are refactored */
mp_obj_dict_view_t *o = lhs_in;
if (o->kind != MP_DICT_VIEW_KEYS) return NULL;
if (op != MP_BINARY_OP_IN) return NULL;
return dict_binary_op(op, o->dict, rhs_in);
}
STATIC const mp_obj_type_t dict_view_type = {
{ &mp_type_type },
.name = MP_QSTR_dict_view,
.print = dict_view_print,
.binary_op = dict_view_binary_op,
.getiter = dict_view_getiter,
};
mp_obj_t mp_obj_new_dict_view(mp_obj_dict_t *dict, mp_dict_view_kind_t kind) {
mp_obj_dict_view_t *o = m_new_obj(mp_obj_dict_view_t);
o->base.type = &dict_view_type;
o->dict = dict;
o->kind = kind;
return o;
}
STATIC mp_obj_t dict_view(mp_obj_t self_in, mp_dict_view_kind_t kind) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
return mp_obj_new_dict_view(self, kind);
}
STATIC mp_obj_t dict_items(mp_obj_t self_in) {
return dict_view(self_in, MP_DICT_VIEW_ITEMS);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(dict_items_obj, dict_items);
STATIC mp_obj_t dict_keys(mp_obj_t self_in) {
return dict_view(self_in, MP_DICT_VIEW_KEYS);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(dict_keys_obj, dict_keys);
STATIC mp_obj_t dict_values(mp_obj_t self_in) {
return dict_view(self_in, MP_DICT_VIEW_VALUES);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(dict_values_obj, dict_values);
/******************************************************************************/
/* dict constructors & public C API */
STATIC const mp_map_elem_t dict_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_clear), (mp_obj_t)&dict_clear_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_copy), (mp_obj_t)&dict_copy_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_fromkeys), (mp_obj_t)&dict_fromkeys_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_get), (mp_obj_t)&dict_get_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_items), (mp_obj_t)&dict_items_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_keys), (mp_obj_t)&dict_keys_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_pop), (mp_obj_t)&dict_pop_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_popitem), (mp_obj_t)&dict_popitem_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_setdefault), (mp_obj_t)&dict_setdefault_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_update), (mp_obj_t)&dict_update_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_values), (mp_obj_t)&dict_values_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR___getitem__), (mp_obj_t)&mp_op_getitem_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR___setitem__), (mp_obj_t)&mp_op_setitem_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR___delitem__), (mp_obj_t)&mp_op_delitem_obj },
};
STATIC MP_DEFINE_CONST_DICT(dict_locals_dict, dict_locals_dict_table);
const mp_obj_type_t mp_type_dict = {
{ &mp_type_type },
.name = MP_QSTR_dict,
.print = dict_print,
.make_new = dict_make_new,
.unary_op = dict_unary_op,
.binary_op = dict_binary_op,
.subscr = dict_subscr,
.getiter = dict_getiter,
.locals_dict = (mp_obj_t)&dict_locals_dict,
};
void mp_obj_dict_init(mp_obj_dict_t *dict, int n_args) {
dict->base.type = &mp_type_dict;
mp_map_init(&dict->map, n_args);
}
mp_obj_t mp_obj_new_dict(int n_args) {
mp_obj_dict_t *o = m_new_obj(mp_obj_dict_t);
mp_obj_dict_init(o, n_args);
return o;
}
uint mp_obj_dict_len(mp_obj_t self_in) {
return ((mp_obj_dict_t *)self_in)->map.used;
}
mp_obj_t mp_obj_dict_store(mp_obj_t self_in, mp_obj_t key, mp_obj_t value) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
mp_map_lookup(&self->map, key, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = value;
return self_in;
}
mp_obj_t mp_obj_dict_delete(mp_obj_t self_in, mp_obj_t key) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
dict_get_helper(&self->map, key, NULL, MP_MAP_LOOKUP_REMOVE_IF_FOUND);
return self_in;
}
mp_map_t *mp_obj_dict_get_map(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_dict));
mp_obj_dict_t *self = self_in;
return &self->map;
}
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