1 /**
2 * Copyright (c) 2021 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 "tsIndexedAccessType.h"
17
18 #include <typescript/checker.h>
19 #include <ir/astDump.h>
20 #include <ir/typeNode.h>
21
22 namespace panda::es2panda::ir {
23
Iterate(const NodeTraverser & cb) const24 void TSIndexedAccessType::Iterate(const NodeTraverser &cb) const
25 {
26 cb(objectType_);
27 cb(indexType_);
28 }
29
Dump(ir::AstDumper * dumper) const30 void TSIndexedAccessType::Dump(ir::AstDumper *dumper) const
31 {
32 dumper->Add({{"type", "TSIndexedAccessType"}, {"objectType", objectType_}, {"indexType", indexType_}});
33 }
34
Compile(compiler::PandaGen * pg) const35 void TSIndexedAccessType::Compile([[maybe_unused]] compiler::PandaGen *pg) const {}
36
Check(checker::Checker * checker) const37 checker::Type *TSIndexedAccessType::Check(checker::Checker *checker) const
38 {
39 objectType_->Check(checker);
40 indexType_->Check(checker);
41 checker::Type *resolved = GetType(checker);
42
43 if (resolved) {
44 return nullptr;
45 }
46
47 checker::Type *indexType = checker->CheckTypeCached(indexType_);
48
49 if (!indexType->HasTypeFlag(checker::TypeFlag::STRING_LIKE | checker::TypeFlag::NUMBER_LIKE)) {
50 checker->ThrowTypeError({"Type ", indexType, " cannot be used as index type"}, indexType_->Start());
51 }
52
53 if (indexType->IsNumberType()) {
54 checker->ThrowTypeError("Type has no matching singature for type 'number'", Start());
55 }
56
57 checker->ThrowTypeError("Type has no matching singature for type 'string'", Start());
58 return nullptr;
59 }
60
GetType(checker::Checker * checker) const61 checker::Type *TSIndexedAccessType::GetType(checker::Checker *checker) const
62 {
63 auto found = checker->NodeCache().find(this);
64
65 if (found != checker->NodeCache().end()) {
66 return found->second;
67 }
68
69 checker::Type *baseType = objectType_->AsTypeNode()->GetType(checker);
70 checker::Type *indexType = indexType_->AsTypeNode()->GetType(checker);
71 checker::Type *resolved = checker->GetPropertyTypeForIndexType(baseType, indexType);
72
73 checker->NodeCache().insert({this, resolved});
74
75 return resolved;
76 }
77
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)78 void TSIndexedAccessType::UpdateSelf(const NodeUpdater &cb, [[maybe_unused]] binder::Binder *binder)
79 {
80 objectType_ = std::get<ir::AstNode *>(cb(objectType_))->AsExpression();
81 indexType_ = std::get<ir::AstNode *>(cb(indexType_))->AsExpression();
82 }
83
84 } // namespace panda::es2panda::ir
85