micropython/py/emitcommon.c

78 lines
2.9 KiB
C

/*
* 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 <assert.h>
#include "py/emit.h"
#if MICROPY_ENABLE_COMPILER
void mp_emit_common_get_id_for_load(scope_t *scope, qstr qst) {
// name adding/lookup
bool added;
id_info_t *id = scope_find_or_add_id(scope, qst, &added);
if (added) {
scope_find_local_and_close_over(scope, id, qst);
}
}
void mp_emit_common_get_id_for_modification(scope_t *scope, qstr qst) {
// name adding/lookup
bool added;
id_info_t *id = scope_find_or_add_id(scope, qst, &added);
if (added) {
if (SCOPE_IS_FUNC_LIKE(scope->kind)) {
id->kind = ID_INFO_KIND_LOCAL;
} else {
id->kind = ID_INFO_KIND_GLOBAL_IMPLICIT;
}
} else if (SCOPE_IS_FUNC_LIKE(scope->kind) && id->kind == ID_INFO_KIND_GLOBAL_IMPLICIT) {
// rebind as a local variable
id->kind = ID_INFO_KIND_LOCAL;
}
}
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) {
// assumes pass is greater than 1, ie that all identifiers are defined in the scope
id_info_t *id = scope_find(scope, qst);
assert(id != NULL);
// call the emit backend with the correct code
if (id->kind == ID_INFO_KIND_GLOBAL_IMPLICIT) {
emit_method_table->name(emit, qst);
} else if (id->kind == ID_INFO_KIND_GLOBAL_EXPLICIT) {
emit_method_table->global(emit, qst);
} else if (id->kind == ID_INFO_KIND_LOCAL) {
emit_method_table->fast(emit, qst, id->local_num);
} else {
assert(id->kind == ID_INFO_KIND_CELL || id->kind == ID_INFO_KIND_FREE);
emit_method_table->deref(emit, qst, id->local_num);
}
}
#endif // MICROPY_ENABLE_COMPILER