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 "tsSignatureDeclaration.h"
17
18 #include <binder/binder.h>
19 #include <binder/scope.h>
20 #include <ir/astDump.h>
21 #include <ir/typeNode.h>
22 #include <ir/ts/tsTypeParameter.h>
23 #include <ir/ts/tsTypeParameterDeclaration.h>
24 #include <typescript/checker.h>
25
26 namespace panda::es2panda::ir {
27
Iterate(const NodeTraverser & cb) const28 void TSSignatureDeclaration::Iterate(const NodeTraverser &cb) const
29 {
30 if (typeParams_) {
31 cb(typeParams_);
32 }
33
34 for (auto *it : params_) {
35 cb(it);
36 }
37
38 if (returnTypeAnnotation_) {
39 cb(returnTypeAnnotation_);
40 }
41 }
42
Dump(ir::AstDumper * dumper) const43 void TSSignatureDeclaration::Dump(ir::AstDumper *dumper) const
44 {
45 dumper->Add({{"type", (kind_ == TSSignatureDeclaration::TSSignatureDeclarationKind::CALL_SIGNATURE)
46 ? "TSCallSignatureDeclaration"
47 : "TSConstructSignatureDeclaration"},
48 {"params", params_},
49 {"typeParameters", AstDumper::Optional(typeParams_)},
50 {"returnType", AstDumper::Optional(returnTypeAnnotation_)}});
51 }
52
Compile(compiler::PandaGen * pg) const53 void TSSignatureDeclaration::Compile([[maybe_unused]] compiler::PandaGen *pg) const {}
54
Check(checker::Checker * checker) const55 checker::Type *TSSignatureDeclaration::Check(checker::Checker *checker) const
56 {
57 auto found = checker->NodeCache().find(this);
58
59 if (found != checker->NodeCache().end()) {
60 return found->second;
61 }
62
63 checker::ScopeContext scopeCtx(checker, scope_);
64
65 auto *signatureInfo = checker->Allocator()->New<checker::SignatureInfo>(checker->Allocator());
66 checker->CheckFunctionParameterDeclarations(params_, signatureInfo);
67
68 bool isCallSignature = (Kind() == ir::TSSignatureDeclaration::TSSignatureDeclarationKind::CALL_SIGNATURE);
69
70 if (!returnTypeAnnotation_) {
71 if (isCallSignature) {
72 checker->ThrowTypeError(
73 "Call signature, which lacks return-type annotation, implicitly has an 'any' return type.", Start());
74 }
75
76 checker->ThrowTypeError(
77 "Construct signature, which lacks return-type annotation, implicitly has an 'any' return type.", Start());
78 }
79
80 returnTypeAnnotation_->Check(checker);
81 checker::Type *returnType = returnTypeAnnotation_->AsTypeNode()->GetType(checker);
82
83 auto *signature = checker->Allocator()->New<checker::Signature>(signatureInfo, returnType);
84
85 checker::Type *placeholderObj = nullptr;
86
87 if (isCallSignature) {
88 placeholderObj = checker->CreateObjectTypeWithCallSignature(signature);
89 } else {
90 placeholderObj = checker->CreateObjectTypeWithConstructSignature(signature);
91 }
92
93 checker->NodeCache().insert({this, placeholderObj});
94
95 return placeholderObj;
96 }
97
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)98 void TSSignatureDeclaration::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
99 {
100 auto scopeCtx = binder::LexicalScope<binder::Scope>::Enter(binder, scope_);
101
102 if (typeParams_) {
103 typeParams_ = std::get<ir::AstNode *>(cb(typeParams_))->AsTSTypeParameterDeclaration();
104 }
105
106 for (auto iter = params_.begin(); iter != params_.end(); iter++) {
107 *iter = std::get<ir::AstNode *>(cb(*iter))->AsExpression();
108 }
109
110 if (returnTypeAnnotation_) {
111 returnTypeAnnotation_ = std::get<ir::AstNode *>(cb(returnTypeAnnotation_))->AsExpression();
112 }
113 }
114
115 } // namespace panda::es2panda::ir
116