1 /**
2 * Copyright (c) 2021-2024 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 "neverType.h"
17
18 namespace ark::es2panda::checker {
ToString(std::stringstream & ss,bool precise) const19 void NeverType::ToString(std::stringstream &ss, [[maybe_unused]] bool precise) const
20 {
21 ss << "never";
22 }
23
GetTypeFacts() const24 TypeFacts NeverType::GetTypeFacts() const
25 {
26 return TypeFacts::NONE;
27 }
28
Identical(TypeRelation * relation,Type * other)29 void NeverType::Identical(TypeRelation *relation, Type *other)
30 {
31 if (other->IsNeverType()) {
32 relation->Result(true);
33 }
34 }
35
AssignmentTarget(TypeRelation * relation,Type * source)36 void NeverType::AssignmentTarget(TypeRelation *relation, [[maybe_unused]] Type *source)
37 {
38 relation->Result(false);
39 }
40
AssignmentSource(TypeRelation * relation,Type * target)41 bool NeverType::AssignmentSource(TypeRelation *relation, [[maybe_unused]] Type *target)
42 {
43 relation->Result(true);
44 return true;
45 }
46
Instantiate(ArenaAllocator * allocator,TypeRelation * relation,GlobalTypesHolder * globalTypes)47 Type *NeverType::Instantiate([[maybe_unused]] ArenaAllocator *allocator, [[maybe_unused]] TypeRelation *relation,
48 [[maybe_unused]] GlobalTypesHolder *globalTypes)
49 {
50 return this;
51 }
52 } // namespace ark::es2panda::checker
53