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 "identifier.h"
17
18 #include <compiler/core/pandagen.h>
19 #include <typescript/checker.h>
20 #include <ir/astDump.h>
21
22 namespace panda::es2panda::ir {
23
Iterate(const NodeTraverser & cb) const24 void Identifier::Iterate(const NodeTraverser &cb) const
25 {
26 if (typeAnnotation_) {
27 cb(typeAnnotation_);
28 }
29 }
30
Dump(ir::AstDumper * dumper) const31 void Identifier::Dump(ir::AstDumper *dumper) const
32 {
33 dumper->Add({{"type", "Identifier"},
34 {"name", name_},
35 {"typeAnnotation", AstDumper::Optional(typeAnnotation_)},
36 {"optional", AstDumper::Optional(IsOptional())}});
37 }
38
Compile(compiler::PandaGen * pg) const39 void Identifier::Compile(compiler::PandaGen *pg) const
40 {
41 binder::ScopeFindResult res = pg->Scope()->Find(name_);
42 if (res.variable) {
43 pg->LoadVar(this, res);
44 return;
45 }
46
47 if (name_.Is("NaN")) {
48 pg->LoadConst(this, compiler::Constant::JS_NAN);
49 return;
50 }
51
52 if (name_.Is("Infinity")) {
53 pg->LoadConst(this, compiler::Constant::JS_INFINITY);
54 return;
55 }
56
57 if (name_.Is("globalThis")) {
58 pg->LoadConst(this, compiler::Constant::JS_GLOBAL);
59 return;
60 }
61
62 if (name_.Is("undefined")) {
63 pg->LoadConst(this, compiler::Constant::JS_UNDEFINED);
64 return;
65 }
66
67 pg->TryLoadGlobalByName(this, name_);
68 }
69
Check(checker::Checker * checker) const70 checker::Type *Identifier::Check(checker::Checker *checker) const
71 {
72 if (!Variable()) {
73 if (name_.Is("undefined")) {
74 return checker->GlobalUndefinedType();
75 }
76
77 checker->ThrowTypeError({"Cannot find name ", name_}, Start());
78 }
79
80 const binder::Decl *decl = Variable()->Declaration();
81
82 if (decl->IsTypeAliasDecl() || decl->IsInterfaceDecl()) {
83 checker->ThrowTypeError({name_, " only refers to a type, but is being used as a value here."}, Start());
84 }
85
86 return checker->GetTypeOfVariable(Variable());
87 }
88
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)89 void Identifier::UpdateSelf(const NodeUpdater &cb, [[maybe_unused]] binder::Binder *binder)
90 {
91 if (typeAnnotation_) {
92 typeAnnotation_ = std::get<ir::AstNode *>(cb(typeAnnotation_))->AsExpression();
93 }
94 }
95
96 } // namespace panda::es2panda::ir
97