![Paul Sokolovsky](/assets/img/avatar_default.png)
Given that there's already support for "fixed table" maps, which are essentially ordered maps, the implementation of OrderedDict just extends "fixed table" maps by adding an "is ordered" flag and add/remove operations, and reuses 95% of objdict code, just making methods tolerant to both dict and OrderedDict. Some things are missing so far, like CPython-compatible repr and comparison. OrderedDict is Disabled by default; enabled on unix and stmhal ports.
222 lines
7.4 KiB
C
222 lines
7.4 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <assert.h>
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#include "py/mpstate.h"
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#include "py/nlr.h"
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#include "py/objmodule.h"
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#include "py/runtime.h"
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#include "py/builtin.h"
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STATIC void module_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
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(void)kind;
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mp_obj_module_t *self = self_in;
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const char *name = qstr_str(self->name);
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#if MICROPY_PY___FILE__
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// If we store __file__ to imported modules then try to lookup this
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// symbol to give more information about the module.
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mp_map_elem_t *elem = mp_map_lookup(&self->globals->map, MP_OBJ_NEW_QSTR(MP_QSTR___file__), MP_MAP_LOOKUP);
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if (elem != NULL) {
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print(env, "<module '%s' from '%s'>", name, mp_obj_str_get_str(elem->value));
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return;
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}
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#endif
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print(env, "<module '%s'>", name);
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}
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STATIC void module_load_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
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mp_obj_module_t *self = self_in;
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mp_map_elem_t *elem = mp_map_lookup(&self->globals->map, MP_OBJ_NEW_QSTR(attr), MP_MAP_LOOKUP);
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if (elem != NULL) {
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dest[0] = elem->value;
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}
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}
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STATIC bool module_store_attr(mp_obj_t self_in, qstr attr, mp_obj_t value) {
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mp_obj_module_t *self = self_in;
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mp_obj_dict_t *dict = self->globals;
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if (dict->map.is_fixed) {
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#if MICROPY_CAN_OVERRIDE_BUILTINS
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if (dict == &mp_module_builtins_globals) {
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if (MP_STATE_VM(mp_module_builtins_override_dict) == NULL) {
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MP_STATE_VM(mp_module_builtins_override_dict) = mp_obj_new_dict(1);
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}
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dict = MP_STATE_VM(mp_module_builtins_override_dict);
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} else
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#endif
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{
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// can't delete or store to fixed map
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return false;
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}
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}
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if (value == MP_OBJ_NULL) {
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// delete attribute
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mp_obj_dict_delete(dict, MP_OBJ_NEW_QSTR(attr));
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} else {
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// store attribute
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// TODO CPython allows STORE_ATTR to a module, but is this the correct implementation?
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mp_obj_dict_store(dict, MP_OBJ_NEW_QSTR(attr), value);
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}
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return true;
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}
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const mp_obj_type_t mp_type_module = {
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{ &mp_type_type },
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.name = MP_QSTR_module,
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.print = module_print,
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.load_attr = module_load_attr,
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.store_attr = module_store_attr,
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};
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mp_obj_t mp_obj_new_module(qstr module_name) {
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mp_map_elem_t *el = mp_map_lookup(&MP_STATE_VM(mp_loaded_modules_map), MP_OBJ_NEW_QSTR(module_name), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND);
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// We could error out if module already exists, but let C extensions
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// add new members to existing modules.
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if (el->value != MP_OBJ_NULL) {
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return el->value;
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}
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// create new module object
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mp_obj_module_t *o = m_new_obj(mp_obj_module_t);
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o->base.type = &mp_type_module;
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o->name = module_name;
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o->globals = mp_obj_new_dict(MICROPY_MODULE_DICT_SIZE);
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// store __name__ entry in the module
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mp_obj_dict_store(o->globals, MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(module_name));
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// store the new module into the slot in the global dict holding all modules
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el->value = o;
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// return the new module
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return o;
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}
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mp_obj_dict_t *mp_obj_module_get_globals(mp_obj_t self_in) {
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assert(MP_OBJ_IS_TYPE(self_in, &mp_type_module));
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mp_obj_module_t *self = self_in;
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return self->globals;
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}
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/******************************************************************************/
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// Global module table and related functions
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STATIC const mp_map_elem_t mp_builtin_module_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR___main__), (mp_obj_t)&mp_module___main__ },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_builtins), (mp_obj_t)&mp_module_builtins },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_micropython), (mp_obj_t)&mp_module_micropython },
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#if MICROPY_PY_ARRAY
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{ MP_OBJ_NEW_QSTR(MP_QSTR_array), (mp_obj_t)&mp_module_array },
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#endif
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#if MICROPY_PY_IO
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{ MP_OBJ_NEW_QSTR(MP_QSTR__io), (mp_obj_t)&mp_module_io },
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#endif
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#if MICROPY_PY_COLLECTIONS
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{ MP_OBJ_NEW_QSTR(MP_QSTR__collections), (mp_obj_t)&mp_module_collections },
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#endif
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#if MICROPY_PY_STRUCT
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{ MP_OBJ_NEW_QSTR(MP_QSTR_struct), (mp_obj_t)&mp_module_struct },
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#endif
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#if MICROPY_PY_BUILTINS_FLOAT
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#if MICROPY_PY_MATH
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{ MP_OBJ_NEW_QSTR(MP_QSTR_math), (mp_obj_t)&mp_module_math },
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#endif
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#if MICROPY_PY_CMATH
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{ MP_OBJ_NEW_QSTR(MP_QSTR_cmath), (mp_obj_t)&mp_module_cmath },
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#endif
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#endif
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#if MICROPY_PY_SYS
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sys), (mp_obj_t)&mp_module_sys },
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#endif
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#if MICROPY_PY_GC && MICROPY_ENABLE_GC
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{ MP_OBJ_NEW_QSTR(MP_QSTR_gc), (mp_obj_t)&mp_module_gc },
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#endif
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// extmod modules
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#if MICROPY_PY_UCTYPES
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{ MP_OBJ_NEW_QSTR(MP_QSTR_uctypes), (mp_obj_t)&mp_module_uctypes },
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#endif
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#if MICROPY_PY_UZLIB
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{ MP_OBJ_NEW_QSTR(MP_QSTR_uzlib), (mp_obj_t)&mp_module_uzlib },
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#endif
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#if MICROPY_PY_UJSON
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ujson), (mp_obj_t)&mp_module_ujson },
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#endif
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#if MICROPY_PY_URE
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ure), (mp_obj_t)&mp_module_ure },
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#endif
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#if MICROPY_PY_UHEAPQ
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{ MP_OBJ_NEW_QSTR(MP_QSTR_uheapq), (mp_obj_t)&mp_module_uheapq },
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#endif
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#if MICROPY_PY_UHASHLIB
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{ MP_OBJ_NEW_QSTR(MP_QSTR_uhashlib), (mp_obj_t)&mp_module_uhashlib },
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#endif
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#if MICROPY_PY_UBINASCII
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ubinascii), (mp_obj_t)&mp_module_ubinascii },
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#endif
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// extra builtin modules as defined by a port
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MICROPY_PORT_BUILTIN_MODULES
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};
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STATIC MP_DEFINE_CONST_MAP(mp_builtin_module_map, mp_builtin_module_table);
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void mp_module_init(void) {
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mp_map_init(&MP_STATE_VM(mp_loaded_modules_map), 3);
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}
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void mp_module_deinit(void) {
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mp_map_deinit(&MP_STATE_VM(mp_loaded_modules_map));
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}
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// returns MP_OBJ_NULL if not found
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mp_obj_t mp_module_get(qstr module_name) {
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// lookup module
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mp_map_elem_t *el = mp_map_lookup(&MP_STATE_VM(mp_loaded_modules_map), MP_OBJ_NEW_QSTR(module_name), MP_MAP_LOOKUP);
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if (el == NULL) {
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// module not found, look for builtin module names
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el = mp_map_lookup((mp_map_t*)&mp_builtin_module_map, MP_OBJ_NEW_QSTR(module_name), MP_MAP_LOOKUP);
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if (el == NULL) {
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return MP_OBJ_NULL;
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}
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}
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// module found, return it
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return el->value;
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}
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void mp_module_register(qstr qst, mp_obj_t module) {
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mp_map_lookup(&MP_STATE_VM(mp_loaded_modules_map), MP_OBJ_NEW_QSTR(qst), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = module;
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}
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