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/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 mp_map_t mp_loaded_modules_map; // TODO: expose as sys.modules
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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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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.table_is_fixed_array) {
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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_module_builtins_override_dict == NULL) {
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mp_module_builtins_override_dict = mp_obj_new_dict(1);
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}
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dict = 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_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_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_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_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 qstr, mp_obj_t module) {
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mp_map_lookup(&mp_loaded_modules_map, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = module;
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}
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