1/*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2013, 2014 Damien P. George
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
27#include <assert.h>
28
29#include "py/emit.h"
30
31#if MICROPY_ENABLE_COMPILER
32
33void mp_emit_common_get_id_for_modification(scope_t *scope, qstr qst) {
34 // name adding/lookup
35 id_info_t *id = scope_find_or_add_id(scope, qst, ID_INFO_KIND_GLOBAL_IMPLICIT);
36 if (SCOPE_IS_FUNC_LIKE(scope->kind) && id->kind == ID_INFO_KIND_GLOBAL_IMPLICIT) {
37 // rebind as a local variable
38 id->kind = ID_INFO_KIND_LOCAL;
39 }
40}
41
42void mp_emit_common_id_op(emit_t *emit, const mp_emit_method_table_id_ops_t *emit_method_table, scope_t *scope, qstr qst) {
43 // assumes pass is greater than 1, ie that all identifiers are defined in the scope
44
45 id_info_t *id = scope_find(scope, qst);
46 assert(id != NULL);
47
48 // call the emit backend with the correct code
49 if (id->kind == ID_INFO_KIND_GLOBAL_IMPLICIT) {
50 emit_method_table->global(emit, qst, MP_EMIT_IDOP_GLOBAL_NAME);
51 } else if (id->kind == ID_INFO_KIND_GLOBAL_EXPLICIT) {
52 emit_method_table->global(emit, qst, MP_EMIT_IDOP_GLOBAL_GLOBAL);
53 } else if (id->kind == ID_INFO_KIND_LOCAL) {
54 emit_method_table->local(emit, qst, id->local_num, MP_EMIT_IDOP_LOCAL_FAST);
55 } else {
56 assert(id->kind == ID_INFO_KIND_CELL || id->kind == ID_INFO_KIND_FREE);
57 emit_method_table->local(emit, qst, id->local_num, MP_EMIT_IDOP_LOCAL_DEREF);
58 }
59}
60
61#endif // MICROPY_ENABLE_COMPILER
62