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 <binder/scope.h>
19 #include <compiler/core/pandagen.h>
20 #include <typescript/checker.h>
21 #include <ir/astDump.h>
22 #include <ir/typeNode.h>
23 #include <ir/base/decorator.h>
24 #include <ir/base/scriptFunction.h>
25 #include <ir/expressions/assignmentExpression.h>
26 #include <ir/statements/functionDeclaration.h>
27 #include <ir/statements/variableDeclarator.h>
28 #include <ir/expression.h>
29
30 namespace panda::es2panda::ir {
31
Iterate(const NodeTraverser & cb) const32 void Identifier::Iterate(const NodeTraverser &cb) const
33 {
34 if (typeAnnotation_) {
35 cb(typeAnnotation_);
36 }
37 }
38
Dump(ir::AstDumper * dumper) const39 void Identifier::Dump(ir::AstDumper *dumper) const
40 {
41 dumper->Add({{"type", "Identifier"},
42 {"name", name_},
43 {"typeAnnotation", AstDumper::Optional(typeAnnotation_)},
44 {"optional", AstDumper::Optional(IsOptional())}});
45 }
46
Compile(compiler::PandaGen * pg) const47 void Identifier::Compile(compiler::PandaGen *pg) const
48 {
49 binder::ScopeFindResult res = pg->Scope()->Find(name_);
50 if (res.variable) {
51 pg->LoadVar(this, res);
52 return;
53 }
54
55 if (name_.Is("NaN")) {
56 pg->LoadConst(this, compiler::Constant::JS_NAN);
57 return;
58 }
59
60 if (name_.Is("Infinity")) {
61 pg->LoadConst(this, compiler::Constant::JS_INFINITY);
62 return;
63 }
64
65 if (name_.Is("globalThis")) {
66 pg->LoadConst(this, compiler::Constant::JS_GLOBAL);
67 return;
68 }
69
70 if (name_.Is("undefined")) {
71 pg->LoadConst(this, compiler::Constant::JS_UNDEFINED);
72 return;
73 }
74
75 pg->TryLoadGlobalByName(this, name_);
76 }
77
Check(checker::Checker * checker) const78 checker::Type *Identifier::Check(checker::Checker *checker) const
79 {
80 if (!Variable()) {
81 if (name_.Is("undefined")) {
82 return checker->GlobalUndefinedType();
83 }
84
85 checker->ThrowTypeError({"Cannot find name ", name_}, Start());
86 }
87
88 const binder::Decl *decl = Variable()->Declaration();
89
90 if (decl->IsTypeAliasDecl() || decl->IsInterfaceDecl()) {
91 checker->ThrowTypeError({name_, " only refers to a type, but is being used as a value here."}, Start());
92 }
93
94 return checker->GetTypeOfVariable(Variable());
95 }
96
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)97 void Identifier::UpdateSelf(const NodeUpdater &cb, [[maybe_unused]] binder::Binder *binder)
98 {
99 if (typeAnnotation_) {
100 typeAnnotation_ = std::get<ir::AstNode *>(cb(typeAnnotation_))->AsExpression();
101 }
102 }
103
104 } // namespace panda::es2panda::ir
105