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 <ir/astDump.h>
19 #include <ir/typeNode.h>
20 #include <ir/ts/tsTypeParameterDeclaration.h>
21 #include <typescript/checker.h>
22
23 namespace panda::es2panda::ir {
24
Iterate(const NodeTraverser & cb) const25 void TSSignatureDeclaration::Iterate(const NodeTraverser &cb) const
26 {
27 if (typeParams_) {
28 cb(typeParams_);
29 }
30
31 for (auto *it : params_) {
32 cb(it);
33 }
34
35 if (returnTypeAnnotation_) {
36 cb(returnTypeAnnotation_);
37 }
38 }
39
Dump(ir::AstDumper * dumper) const40 void TSSignatureDeclaration::Dump(ir::AstDumper *dumper) const
41 {
42 dumper->Add({{"type", (kind_ == TSSignatureDeclaration::TSSignatureDeclarationKind::CALL_SIGNATURE)
43 ? "TSCallSignatureDeclaration"
44 : "TSConstructSignatureDeclaration"},
45 {"params", params_},
46 {"typeParameters", AstDumper::Optional(typeParams_)},
47 {"returnType", AstDumper::Optional(returnTypeAnnotation_)}});
48 }
49
Compile(compiler::PandaGen * pg) const50 void TSSignatureDeclaration::Compile([[maybe_unused]] compiler::PandaGen *pg) const {}
51
Check(checker::Checker * checker) const52 checker::Type *TSSignatureDeclaration::Check(checker::Checker *checker) const
53 {
54 auto found = checker->NodeCache().find(this);
55 if (found != checker->NodeCache().end()) {
56 return found->second;
57 }
58
59 checker::ScopeContext scopeCtx(checker, scope_);
60
61 auto *signatureInfo = checker->Allocator()->New<checker::SignatureInfo>(checker->Allocator());
62 checker->CheckFunctionParameterDeclarations(params_, signatureInfo);
63
64 bool isCallSignature = (Kind() == ir::TSSignatureDeclaration::TSSignatureDeclarationKind::CALL_SIGNATURE);
65
66 if (!returnTypeAnnotation_) {
67 if (isCallSignature) {
68 checker->ThrowTypeError(
69 "Call signature, which lacks return-type annotation, implicitly has an 'any' return type.", Start());
70 }
71
72 checker->ThrowTypeError(
73 "Construct signature, which lacks return-type annotation, implicitly has an 'any' return type.", Start());
74 }
75
76 returnTypeAnnotation_->Check(checker);
77 checker::Type *returnType = returnTypeAnnotation_->AsTypeNode()->GetType(checker);
78
79 auto *signature = checker->Allocator()->New<checker::Signature>(signatureInfo, returnType);
80
81 checker::Type *placeholderObj = nullptr;
82
83 if (isCallSignature) {
84 placeholderObj = checker->CreateObjectTypeWithCallSignature(signature);
85 } else {
86 placeholderObj = checker->CreateObjectTypeWithConstructSignature(signature);
87 }
88
89 checker->NodeCache().insert({this, placeholderObj});
90
91 return placeholderObj;
92 }
93
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)94 void TSSignatureDeclaration::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
95 {
96 auto scopeCtx = binder::LexicalScope<binder::Scope>::Enter(binder, scope_);
97
98 if (typeParams_) {
99 typeParams_ = std::get<ir::AstNode *>(cb(typeParams_))->AsTSTypeParameterDeclaration();
100 }
101
102 for (auto iter = params_.begin(); iter != params_.end(); iter++) {
103 *iter = std::get<ir::AstNode *>(cb(*iter))->AsExpression();
104 }
105
106 if (returnTypeAnnotation_) {
107 returnTypeAnnotation_ = std::get<ir::AstNode *>(cb(returnTypeAnnotation_))->AsExpression();
108 }
109 }
110
111 } // namespace panda::es2panda::ir
112