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 "tsMethodSignature.h"
17
18#include <typescript/checker.h>
19#include <binder/binder.h>
20#include <binder/scope.h>
21#include <ir/astDump.h>
22#include <ir/typeNode.h>
23#include <ir/ts/tsTypeParameter.h>
24#include <ir/ts/tsTypeParameterDeclaration.h>
25#include <ir/expressions/literals/numberLiteral.h>
26
27namespace panda::es2panda::ir {
28
29void TSMethodSignature::Iterate(const NodeTraverser &cb) const
30{
31    cb(key_);
32
33    if (typeParams_) {
34        cb(typeParams_);
35    }
36
37    for (auto *it : params_) {
38        cb(it);
39    }
40
41    if (returnTypeAnnotation_) {
42        cb(returnTypeAnnotation_);
43    }
44}
45
46void TSMethodSignature::Dump(ir::AstDumper *dumper) const
47{
48    dumper->Add({{"type", "TSMethodSignature"},
49                 {"computed", computed_},
50                 {"optional", optional_},
51                 {"isGetAccessor", isGetAccessor_},
52                 {"isSetAccessor", isSetAccessor_},
53                 {"key", key_},
54                 {"params", params_},
55                 {"typeParameters", AstDumper::Optional(typeParams_)},
56                 {"typeAnnotation", AstDumper::Optional(returnTypeAnnotation_)}});
57}
58
59void TSMethodSignature::Compile([[maybe_unused]] compiler::PandaGen *pg) const {}
60
61checker::Type *TSMethodSignature::Check(checker::Checker *checker) const
62{
63    if (computed_) {
64        checker->CheckComputedPropertyName(key_);
65    }
66
67    checker::ScopeContext scopeCtx(checker, scope_);
68
69    auto *signatureInfo = checker->Allocator()->New<checker::SignatureInfo>(checker->Allocator());
70    checker->CheckFunctionParameterDeclarations(params_, signatureInfo);
71
72    auto *callSignature = checker->Allocator()->New<checker::Signature>(signatureInfo, checker->GlobalAnyType());
73    Variable()->SetTsType(checker->CreateFunctionTypeWithSignature(callSignature));
74
75    if (!returnTypeAnnotation_) {
76        checker->ThrowTypeError(
77            "Method signature, which lacks return-type annotation, implicitly has an 'any' return type.", Start());
78    }
79
80    returnTypeAnnotation_->Check(checker);
81    CHECK_NOT_NULL(callSignature);
82    callSignature->SetReturnType(returnTypeAnnotation_->AsTypeNode()->GetType(checker));
83
84    return nullptr;
85}
86
87void TSMethodSignature::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
88{
89    auto scopeCtx = binder::LexicalScope<binder::Scope>::Enter(binder, scope_);
90
91    key_ = std::get<ir::AstNode *>(cb(key_))->AsExpression();
92
93    if (typeParams_) {
94        typeParams_ = std::get<ir::AstNode *>(cb(typeParams_))->AsTSTypeParameterDeclaration();
95    }
96
97    for (auto iter = params_.begin(); iter != params_.end(); iter++) {
98        *iter = std::get<ir::AstNode *>(cb(*iter))->AsExpression();
99    }
100
101    if (returnTypeAnnotation_) {
102        returnTypeAnnotation_ = std::get<ir::AstNode *>(cb(returnTypeAnnotation_))->AsExpression();
103    }
104}
105
106}  // namespace panda::es2panda::ir
107