mirror of
https://github.com/licsber/micropython.git
synced 2024-09-20 09:00:23 +08:00
7d414a1b52
Previous to this patch, a big-int, float or imag constant was interned (made into a qstr) and then parsed at runtime to create an object each time it was needed. This is wasteful in RAM and not efficient. Now, these constants are parsed straight away in the parser and turned into objects. This allows constants with large numbers of digits (so addresses issue #1103) and takes us a step closer to #722.
222 lines
6.7 KiB
C
222 lines
6.7 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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struct _emit_t {
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scope_t *scope;
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};
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emit_t *emit_pass1_new(void) {
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emit_t *emit = m_new(emit_t, 1);
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return emit;
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}
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void emit_pass1_free(emit_t *emit) {
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m_del_obj(emit_t, emit);
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}
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STATIC void emit_pass1_dummy(emit_t *emit) {
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(void)emit;
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}
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STATIC void emit_pass1_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scope) {
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assert(pass == MP_PASS_SCOPE);
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emit->scope = scope;
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}
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STATIC void emit_pass1_end_pass(emit_t *emit) {
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(void)emit;
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}
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STATIC bool emit_pass1_last_emit_was_return_value(emit_t *emit) {
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(void)emit;
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return false;
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}
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STATIC void emit_pass1_load_id(emit_t *emit, 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(emit->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 && emit->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(emit->scope, MP_QSTR___class__);
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if (id2 != NULL) {
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id2 = scope_find_or_add_id(emit->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(emit->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(emit->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(emit->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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STATIC id_info_t *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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assert(id != NULL); // TODO can this ever fail?
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return id;
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}
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STATIC void emit_pass1_store_id(emit_t *emit, qstr qst) {
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get_id_for_modification(emit->scope, qst);
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}
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STATIC void emit_pass1_delete_id(emit_t *emit, qstr qst) {
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id_info_t *id = get_id_for_modification(emit->scope, qst);
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// this flag is unused
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//id->flags |= ID_FLAG_IS_DELETED;
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(void)id; // suppress compiler warning
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}
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const emit_method_table_t emit_pass1_method_table = {
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(void*)emit_pass1_dummy,
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emit_pass1_start_pass,
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emit_pass1_end_pass,
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emit_pass1_last_emit_was_return_value,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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emit_pass1_load_id,
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emit_pass1_store_id,
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emit_pass1_delete_id,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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#if MICROPY_PY_BUILTINS_SET
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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#endif
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#if MICROPY_PY_BUILTINS_SLICE
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(void*)emit_pass1_dummy,
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#endif
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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#if MICROPY_EMIT_CPYTHON
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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(void*)emit_pass1_dummy,
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#endif
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};
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