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 "tsInterfaceDeclaration.h"
17
18 #include <typescript/checker.h>
19 #include <ir/astDump.h>
20 #include <ir/expressions/identifier.h>
21 #include <ir/ts/tsInterfaceBody.h>
22 #include <ir/ts/tsInterfaceHeritage.h>
23 #include <ir/ts/tsTypeParameterDeclaration.h>
24
25 namespace panda::es2panda::ir {
26
Iterate(const NodeTraverser & cb) const27 void TSInterfaceDeclaration::Iterate(const NodeTraverser &cb) const
28 {
29 cb(id_);
30
31 if (typeParams_) {
32 cb(typeParams_);
33 }
34
35 for (auto *it : extends_) {
36 cb(it);
37 }
38
39 cb(body_);
40 }
41
Dump(ir::AstDumper * dumper) const42 void TSInterfaceDeclaration::Dump(ir::AstDumper *dumper) const
43 {
44 dumper->Add({{"type", "TSInterfaceDeclaration"},
45 {"body", body_},
46 {"id", id_},
47 {"extends", extends_},
48 {"typeParameters", AstDumper::Optional(typeParams_)}});
49 }
50
Compile(compiler::PandaGen * pg) const51 void TSInterfaceDeclaration::Compile([[maybe_unused]] compiler::PandaGen *pg) const {}
52
CheckInheritedPropertiesAreIdentical(checker::Checker * checker,checker::InterfaceType * type,const lexer::SourcePosition & locInfo)53 void CheckInheritedPropertiesAreIdentical(checker::Checker *checker, checker::InterfaceType *type,
54 const lexer::SourcePosition &locInfo)
55 {
56 checker->GetBaseTypes(type);
57
58 size_t constexpr BASE_SIZE_LIMIT = 2;
59 if (type->Bases().size() < BASE_SIZE_LIMIT) {
60 return;
61 }
62
63 checker->ResolveDeclaredMembers(type);
64
65 checker::InterfacePropertyMap properties;
66
67 for (auto *it : type->Properties()) {
68 properties.insert({it->Name(), {it, type}});
69 }
70
71 for (auto *base : type->Bases()) {
72 checker->ResolveStructuredTypeMembers(base);
73 ArenaVector<binder::LocalVariable *> inheritedProperties(checker->Allocator()->Adapter());
74 base->AsInterfaceType()->CollectProperties(&inheritedProperties);
75
76 for (auto *inheritedProp : inheritedProperties) {
77 auto res = properties.find(inheritedProp->Name());
78 if (res == properties.end()) {
79 properties.insert({inheritedProp->Name(), {inheritedProp, base->AsInterfaceType()}});
80 } else if (res->second.second != type) {
81 checker::Type *sourceType = checker->GetTypeOfVariable(inheritedProp);
82 checker::Type *targetType = checker->GetTypeOfVariable(res->second.first);
83 checker->IsTypeIdenticalTo(sourceType, targetType,
84 {"Interface '", type, "' cannot simultaneously extend types '",
85 res->second.second, "' and '", base->AsInterfaceType(), "'."},
86 locInfo);
87 }
88 }
89 }
90 }
91
Check(checker::Checker * checker) const92 checker::Type *TSInterfaceDeclaration::Check(checker::Checker *checker) const
93 {
94 binder::Variable *var = id_->Variable();
95 ASSERT(var->Declaration()->Node() && var->Declaration()->Node()->IsTSInterfaceDeclaration());
96
97 if (this == var->Declaration()->Node()) {
98 checker::Type *resolvedType = var->TsType();
99
100 if (!resolvedType) {
101 checker::ObjectDescriptor *desc =
102 checker->Allocator()->New<checker::ObjectDescriptor>(checker->Allocator());
103 resolvedType = checker->Allocator()->New<checker::InterfaceType>(checker->Allocator(), id_->Name(), desc);
104 CHECK_NOT_NULL(resolvedType);
105 resolvedType->SetVariable(var);
106 var->SetTsType(resolvedType);
107 }
108
109 checker::InterfaceType *resolvedInterface = resolvedType->AsObjectType()->AsInterfaceType();
110 CheckInheritedPropertiesAreIdentical(checker, resolvedInterface, id_->Start());
111
112 for (auto *base : resolvedInterface->Bases()) {
113 checker->IsTypeAssignableTo(resolvedInterface, base,
114 {"Interface '", id_->Name(), "' incorrectly extends interface '", base, "'"},
115 id_->Start());
116 }
117
118 checker->CheckIndexConstraints(resolvedInterface);
119 }
120
121 body_->Check(checker);
122
123 return nullptr;
124 }
125
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)126 void TSInterfaceDeclaration::UpdateSelf(const NodeUpdater &cb, [[maybe_unused]] binder::Binder *binder)
127 {
128 id_ = std::get<ir::AstNode *>(cb(id_))->AsIdentifier();
129
130 if (typeParams_) {
131 typeParams_ = std::get<ir::AstNode *>(cb(typeParams_))->AsTSTypeParameterDeclaration();
132 }
133
134 for (auto iter = extends_.begin(); iter != extends_.end(); iter++) {
135 *iter = std::get<ir::AstNode *>(cb(*iter))->AsTSInterfaceHeritage();
136 }
137
138 body_ = std::get<ir::AstNode *>(cb(body_))->AsTSInterfaceBody();
139 }
140
141 } // namespace panda::es2panda::ir
142