1/*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "variableNameIdentifierNameSame.h"
17#include "ir/expressions/identifier.h"
18#include "ir/ets/etsImportDeclaration.h"
19
20namespace ark::es2panda::compiler::ast_verifier {
21
22[[nodiscard]] CheckResult VariableNameIdentifierNameSame::operator()(CheckContext &ctx, const ir::AstNode *ast)
23{
24    if (!ast->IsIdentifier()) {
25        return {CheckDecision::CORRECT, CheckAction::CONTINUE};
26    }
27    const auto *id = ast->AsIdentifier();
28    const auto variable = ast->AsIdentifier()->Variable();
29    if (variable == nullptr || variable->Declaration() == nullptr || variable->Declaration()->Node() == nullptr) {
30        return {CheckDecision::CORRECT, CheckAction::CONTINUE};
31    }
32    const auto variableNode = variable->Declaration()->Node();
33    // NOTE(psaykerone): skip because, this exceptions need to be fixed in checker and lowering
34    if (variableNode->IsExported() || variableNode->IsExportedType() || variableNode->IsDefaultExported() ||
35        id->Name().Utf8().find("field") == 0 || variable->Name().Utf8().find("field") == 0) {
36        return {CheckDecision::CORRECT, CheckAction::CONTINUE};
37    }
38    if (id->Name() == variable->Name()) {
39        return {CheckDecision::CORRECT, CheckAction::CONTINUE};
40    }
41
42    // For dynamic imports imported identifier name does not match variable name
43    // Example:
44    // import { A as AA } from "dynamic_js_import_tests"
45    // Variable name will be AA
46    // But imported identifier name is A
47    auto parent = ast->Parent();
48    while (parent != nullptr) {
49        if (parent->IsETSImportDeclaration() && parent->AsETSImportDeclaration()->IsPureDynamic()) {
50            return {CheckDecision::CORRECT, CheckAction::CONTINUE};
51        }
52
53        parent = parent->Parent();
54    }
55
56    ctx.AddCheckMessage("IDENTIFIER_NAME_DIFFERENCE", *id, id->Start());
57    return {CheckDecision::INCORRECT, CheckAction::CONTINUE};
58}
59
60}  // namespace ark::es2panda::compiler::ast_verifier
61