1 /**
2 * Copyright (c) 2021-2025 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 "returnStatement.h"
17
18 #include "checker/TSchecker.h"
19 #include "compiler/core/pandagen.h"
20 #include "compiler/core/ETSGen.h"
21 #include "ir/astDump.h"
22 #include "ir/srcDump.h"
23
24 namespace ark::es2panda::ir {
TransformChildren(const NodeTransformer & cb,std::string_view transformationName)25 void ReturnStatement::TransformChildren(const NodeTransformer &cb, std::string_view transformationName)
26 {
27 if (argument_ != nullptr) {
28 if (auto *transformedNode = cb(argument_); argument_ != transformedNode) {
29 argument_->SetTransformedNode(transformationName, transformedNode);
30 argument_ = transformedNode->AsExpression();
31 }
32 }
33 }
34
Iterate(const NodeTraverser & cb) const35 void ReturnStatement::Iterate(const NodeTraverser &cb) const
36 {
37 if (argument_ != nullptr) {
38 cb(argument_);
39 }
40 }
41
Dump(ir::AstDumper * dumper) const42 void ReturnStatement::Dump(ir::AstDumper *dumper) const
43 {
44 dumper->Add({{"type", "ReturnStatement"}, {"argument", AstDumper::Nullish(argument_)}});
45 }
46
Dump(ir::SrcDumper * dumper) const47 void ReturnStatement::Dump(ir::SrcDumper *dumper) const
48 {
49 dumper->Add("return");
50 if (argument_ != nullptr) {
51 dumper->Add(" ");
52 argument_->Dump(dumper);
53 }
54 dumper->Add(";");
55 }
56
Compile(compiler::PandaGen * pg) const57 void ReturnStatement::Compile([[maybe_unused]] compiler::PandaGen *pg) const
58 {
59 pg->GetAstCompiler()->Compile(this);
60 }
61
Compile(compiler::ETSGen * etsg) const62 void ReturnStatement::Compile([[maybe_unused]] compiler::ETSGen *etsg) const
63 {
64 etsg->GetAstCompiler()->Compile(this);
65 }
66
Check(checker::TSChecker * checker)67 checker::Type *ReturnStatement::Check([[maybe_unused]] checker::TSChecker *checker)
68 {
69 return checker->GetAnalyzer()->Check(this);
70 }
71
Check(checker::ETSChecker * checker)72 checker::VerifiedType ReturnStatement::Check(checker::ETSChecker *checker)
73 {
74 return {this, checker->GetAnalyzer()->Check(this)};
75 }
76
SetReturnType(checker::ETSChecker * checker,checker::Type * type)77 void ReturnStatement::SetReturnType(checker::ETSChecker *checker, checker::Type *type)
78 {
79 returnType_ = type;
80 if (argument_ != nullptr) {
81 checker::Type *argumentType = argument_->Check(checker);
82 if (type->IsETSReferenceType() && !argumentType->IsETSReferenceType()) {
83 auto *const relation = checker->Relation();
84 relation->SetNode(argument_);
85 relation->SetFlags(checker::TypeRelationFlag::NONE);
86
87 argumentType = checker->MaybeBoxInRelation(argumentType);
88 if (argumentType == nullptr) {
89 checker->LogError(diagnostic::INVALID_EXPR_IN_RETURN, {}, argument_->Start());
90 return;
91 }
92 argument_->AddBoxingUnboxingFlags(checker->GetBoxingFlag(argumentType));
93
94 relation->SetNode(nullptr);
95 }
96 }
97 }
98
SetArgument(Expression * arg)99 void ReturnStatement::SetArgument(Expression *arg)
100 {
101 argument_ = arg;
102 if (argument_ != nullptr) {
103 argument_->SetParent(this);
104 }
105 }
106
IsAsyncImplReturn() const107 bool ReturnStatement::IsAsyncImplReturn() const
108 {
109 const auto *parent = Parent();
110
111 while (parent != nullptr) {
112 if (parent->IsScriptFunction()) {
113 return parent->AsScriptFunction()->IsAsyncImplFunc();
114 }
115 parent = parent->Parent();
116 }
117 return false;
118 }
119
Clone(ArenaAllocator * const allocator,AstNode * const parent)120 ReturnStatement *ReturnStatement::Clone(ArenaAllocator *const allocator, AstNode *const parent)
121 {
122 ir::ReturnStatement *clone = allocator->New<ir::ReturnStatement>();
123 if (clone != nullptr) {
124 clone->SetParent(parent);
125 if (argument_ != nullptr) {
126 clone->SetArgument(argument_->Clone(allocator, clone)->AsExpression());
127 }
128 clone->returnType_ = returnType_;
129 clone->SetRange(Range());
130 }
131 return clone;
132 }
133 } // namespace ark::es2panda::ir
134