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
26namespace panda::es2panda::ir {
27
28void 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
43void 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
53void TSSignatureDeclaration::Compile([[maybe_unused]] compiler::PandaGen *pg) const {}
54
55checker::Type *TSSignatureDeclaration::Check(checker::Checker *checker) const
56{
57    auto found = checker->NodeCache().find(this);
58    if (found != checker->NodeCache().end()) {
59        return found->second;
60    }
61
62    checker::ScopeContext scopeCtx(checker, scope_);
63
64    auto *signatureInfo = checker->Allocator()->New<checker::SignatureInfo>(checker->Allocator());
65    checker->CheckFunctionParameterDeclarations(params_, signatureInfo);
66
67    bool isCallSignature = (Kind() == ir::TSSignatureDeclaration::TSSignatureDeclarationKind::CALL_SIGNATURE);
68
69    if (!returnTypeAnnotation_) {
70        if (isCallSignature) {
71            checker->ThrowTypeError(
72                "Call signature, which lacks return-type annotation, implicitly has an 'any' return type.", Start());
73        }
74
75        checker->ThrowTypeError(
76            "Construct signature, which lacks return-type annotation, implicitly has an 'any' return type.", Start());
77    }
78
79    returnTypeAnnotation_->Check(checker);
80    checker::Type *returnType = returnTypeAnnotation_->AsTypeNode()->GetType(checker);
81
82    auto *signature = checker->Allocator()->New<checker::Signature>(signatureInfo, returnType);
83
84    checker::Type *placeholderObj = nullptr;
85
86    if (isCallSignature) {
87        placeholderObj = checker->CreateObjectTypeWithCallSignature(signature);
88    } else {
89        placeholderObj = checker->CreateObjectTypeWithConstructSignature(signature);
90    }
91
92    checker->NodeCache().insert({this, placeholderObj});
93
94    return placeholderObj;
95}
96
97void TSSignatureDeclaration::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
98{
99    auto scopeCtx = binder::LexicalScope<binder::Scope>::Enter(binder, scope_);
100
101    if (typeParams_) {
102        typeParams_ = std::get<ir::AstNode *>(cb(typeParams_))->AsTSTypeParameterDeclaration();
103    }
104
105    for (auto iter = params_.begin(); iter != params_.end(); iter++) {
106        *iter = std::get<ir::AstNode *>(cb(*iter))->AsExpression();
107    }
108
109    if (returnTypeAnnotation_) {
110        returnTypeAnnotation_ = std::get<ir::AstNode *>(cb(returnTypeAnnotation_))->AsExpression();
111    }
112}
113
114}  // namespace panda::es2panda::ir
115