kopia lustrzana https://github.com/micropython/micropython
96 wiersze
3.8 KiB
C
96 wiersze
3.8 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 <assert.h>
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#include "py/emit.h"
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void mp_emit_common_get_id_for_load(scope_t *scope, qstr qst) {
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// name adding/lookup
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bool added;
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id_info_t *id = scope_find_or_add_id(scope, qst, &added);
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if (added) {
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#if MICROPY_EMIT_CPYTHON
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if (qst == MP_QSTR_super && scope->kind == SCOPE_FUNCTION) {
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// special case, super is a global, and also counts as use of __class__
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id->kind = ID_INFO_KIND_GLOBAL_EXPLICIT;
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id_info_t *id2 = scope_find_local_in_parent(scope, MP_QSTR___class__);
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if (id2 != NULL) {
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id2 = scope_find_or_add_id(scope, MP_QSTR___class__, &added);
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if (added) {
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id2->kind = ID_INFO_KIND_FREE;
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scope_close_over_in_parents(scope, MP_QSTR___class__);
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}
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}
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} else
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#endif
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{
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id_info_t *id2 = scope_find_local_in_parent(scope, qst);
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if (id2 != NULL && (id2->kind == ID_INFO_KIND_LOCAL || id2->kind == ID_INFO_KIND_CELL || id2->kind == ID_INFO_KIND_FREE)) {
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id->kind = ID_INFO_KIND_FREE;
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scope_close_over_in_parents(scope, qst);
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} else {
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id->kind = ID_INFO_KIND_GLOBAL_IMPLICIT;
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}
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}
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}
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}
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void mp_emit_common_get_id_for_modification(scope_t *scope, qstr qst) {
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// name adding/lookup
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bool added;
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id_info_t *id = scope_find_or_add_id(scope, qst, &added);
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if (added) {
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if (scope->kind == SCOPE_MODULE || scope->kind == SCOPE_CLASS) {
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id->kind = ID_INFO_KIND_GLOBAL_IMPLICIT;
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} else {
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id->kind = ID_INFO_KIND_LOCAL;
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}
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} else if (scope->kind >= SCOPE_FUNCTION && scope->kind <= SCOPE_GEN_EXPR && id->kind == ID_INFO_KIND_GLOBAL_IMPLICIT) {
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// rebind as a local variable
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id->kind = ID_INFO_KIND_LOCAL;
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}
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}
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void mp_emit_common_id_op(emit_t *emit, const mp_emit_method_table_id_ops_t *emit_method_table, scope_t *scope, qstr qst) {
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// assumes pass is greater than 1, ie that all identifiers are defined in the scope
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id_info_t *id = scope_find(scope, qst);
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assert(id != NULL);
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// call the emit backend with the correct code
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if (id->kind == ID_INFO_KIND_GLOBAL_IMPLICIT) {
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emit_method_table->name(emit, qst);
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} else if (id->kind == ID_INFO_KIND_GLOBAL_EXPLICIT) {
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emit_method_table->global(emit, qst);
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} else if (id->kind == ID_INFO_KIND_LOCAL) {
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emit_method_table->fast(emit, qst, id->local_num);
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} else {
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assert(id->kind == ID_INFO_KIND_CELL || id->kind == ID_INFO_KIND_FREE);
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emit_method_table->deref(emit, qst, id->local_num);
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}
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}
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