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 "scriptFunction.h"
17
18 #include <binder/binder.h>
19 #include <binder/scope.h>
20 #include <ir/astDump.h>
21 #include <ir/base/methodDefinition.h>
22 #include <ir/expression.h>
23 #include <ir/expressions/identifier.h>
24 #include <ir/statements/blockStatement.h>
25 #include <ir/ts/tsTypeParameter.h>
26 #include <ir/ts/tsTypeParameterDeclaration.h>
27
28 namespace panda::es2panda::ir {
29
FormalParamsLength() const30 size_t ScriptFunction::FormalParamsLength() const
31 {
32 size_t length = 0;
33
34 for (const auto *param : params_) {
35 if (param->IsRestElement() || param->IsAssignmentPattern()) {
36 break;
37 }
38
39 length++;
40 }
41
42 return length;
43 }
44
GetName() const45 util::StringView ScriptFunction::GetName() const
46 {
47 if (id_) {
48 return id_->Name();
49 }
50
51 if (exportDefault_) {
52 return parser::SourceTextModuleRecord::DEFAULT_LOCAL_NAME;
53 }
54
55 return "";
56 }
57
Iterate(const NodeTraverser & cb) const58 void ScriptFunction::Iterate(const NodeTraverser &cb) const
59 {
60 if (id_) {
61 cb(id_);
62 }
63
64 if (typeParams_) {
65 cb(typeParams_);
66 }
67
68 if (thisParam_) {
69 cb(thisParam_);
70 }
71
72 for (auto *it : params_) {
73 cb(it);
74 }
75
76 if (returnTypeAnnotation_) {
77 cb(returnTypeAnnotation_);
78 }
79
80 if (body_) {
81 cb(body_);
82 }
83 }
84
Dump(ir::AstDumper * dumper) const85 void ScriptFunction::Dump(ir::AstDumper *dumper) const
86 {
87 dumper->Add({{"type", "ScriptFunction"},
88 {"id", AstDumper::Nullable(id_)},
89 {"generator", IsGenerator()},
90 {"async", IsAsync()},
91 {"expression", ((flags_ & ir::ScriptFunctionFlags::EXPRESSION) != 0)},
92 {"thisParam", AstDumper::Optional(thisParam_)},
93 {"params", params_},
94 {"returnType", AstDumper::Optional(returnTypeAnnotation_)},
95 {"typeParameters", AstDumper::Optional(typeParams_)},
96 {"declare", AstDumper::Optional(declare_)},
97 {"body", AstDumper::Optional(body_)}});
98 }
99
Compile(compiler::PandaGen * pg) const100 void ScriptFunction::Compile([[maybe_unused]] compiler::PandaGen *pg) const {}
101
Check(checker::Checker * checker) const102 checker::Type *ScriptFunction::Check([[maybe_unused]] checker::Checker *checker) const
103 {
104 return nullptr;
105 }
106
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)107 void ScriptFunction::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
108 {
109 if (id_) {
110 id_ = std::get<ir::AstNode *>(cb(id_))->AsIdentifier();
111 }
112
113 auto paramScopeCtx = binder::LexicalScope<binder::FunctionParamScope>::Enter(binder, scope_->ParamScope());
114
115 if (typeParams_) {
116 typeParams_ = std::get<ir::AstNode *>(cb(typeParams_))->AsTSTypeParameterDeclaration();
117 }
118
119 if (thisParam_) {
120 thisParam_ = std::get<ir::AstNode *>(cb(thisParam_))->AsExpression();
121 }
122
123 for (auto iter = params_.begin(); iter != params_.end(); iter++) {
124 *iter = std::get<ir::AstNode *>(cb(*iter))->AsExpression();
125 }
126
127 if (returnTypeAnnotation_) {
128 returnTypeAnnotation_ = std::get<ir::AstNode *>(cb(returnTypeAnnotation_))->AsExpression();
129 }
130
131 auto scopeCtx = binder::LexicalScope<binder::FunctionScope>::Enter(binder, scope_);
132
133 if (body_) {
134 body_ = std::get<ir::AstNode *>(cb(body_));
135 }
136 }
137
SourceCode(binder::Binder * binder) const138 util::StringView ScriptFunction::SourceCode(binder::Binder *binder) const
139 {
140 auto *funcNode = this->Parent();
141 if (funcNode->IsFunctionExpression() &&
142 funcNode->Parent()->IsMethodDefinition() &&
143 funcNode->Parent()->AsMethodDefinition()->Value() == funcNode->AsFunctionExpression()) {
144 funcNode = funcNode->Parent();
145 }
146
147 auto startIndex = funcNode->Start().index;
148 auto endIndex = funcNode->End().index;
149 return binder->Program()->SourceCode().Substr(startIndex, endIndex);
150 }
151
152 } // namespace panda::es2panda::ir
153