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 "variable.h"
17
18 #include <binder/scope.h>
19
20 #include <utility>
21
22 namespace panda::es2panda::binder {
23
LocalVariable(Decl * decl,VariableFlags flags)24 LocalVariable::LocalVariable(Decl *decl, VariableFlags flags) : Variable(decl, flags)
25 {
26 if (decl->IsConstDecl()) {
27 flags_ |= VariableFlags::READONLY;
28 }
29 }
30
Name() const31 const util::StringView &Variable::Name() const
32 {
33 return decl_->Name();
34 }
35
Copy(ArenaAllocator * allocator,Decl * decl) const36 LocalVariable *LocalVariable::Copy(ArenaAllocator *allocator, Decl *decl) const
37 {
38 auto *var = allocator->New<LocalVariable>(decl, flags_);
39 var->vreg_ = vreg_;
40 return var;
41 }
42
SetLexical(Scope * scope,util::Hotfix * hotfixHelper)43 void LocalVariable::SetLexical(Scope *scope, util::Hotfix *hotfixHelper)
44 {
45 if (LexicalBound()) {
46 return;
47 }
48
49 VariableScope *varScope = scope->EnclosingVariableScope();
50 uint32_t slot = 0;
51 auto name = Declaration()->Name();
52
53 if (hotfixHelper && hotfixHelper->IsScopeValidToPatchLexical(varScope)) {
54 slot = hotfixHelper->GetSlotIdFromSymbolTable(std::string(name));
55 if (hotfixHelper->IsPatchVar(slot)) {
56 hotfixHelper->AllocSlotfromPatchEnv(std::string(name));
57 }
58 } else {
59 slot = varScope->NextSlot();
60 }
61
62 BindLexEnvSlot(slot);
63 // gather lexical variables for debuginfo
64 varScope->AddLexicalVarNameAndType(slot, name,
65 static_cast<typename std::underlying_type<binder::DeclType>::type>(Declaration()->Type()));
66 }
67
SetLexical(Scope * scope,util::Hotfix * hotfixHelper)68 void GlobalVariable::SetLexical([[maybe_unused]] Scope *scope, [[maybe_unused]] util::Hotfix *hotfixHelper) {}
SetLexical(Scope * scope,util::Hotfix * hotfixHelper)69 void ModuleVariable::SetLexical([[maybe_unused]] Scope *scope, [[maybe_unused]] util::Hotfix *hotfixHelper) {}
SetLexical(Scope * scope,util::Hotfix * hotfixHelper)70 void EnumVariable::SetLexical([[maybe_unused]] Scope *scope, [[maybe_unused]] util::Hotfix *hotfixHelper) {}
SetLexical(Scope * scope,util::Hotfix * hotfixHelper)71 void NamespaceVariable::SetLexical([[maybe_unused]] Scope *scope, [[maybe_unused]] util::Hotfix *hotfixHelper) {}
SetLexical(Scope * scope,util::Hotfix * hotfixHelper)72 void ImportEqualsVariable::SetLexical([[maybe_unused]] Scope *scope, [[maybe_unused]] util::Hotfix *hotfixHelper) {}
73
ResetDecl(Decl * decl)74 void EnumVariable::ResetDecl(Decl *decl)
75 {
76 decl_ = decl;
77 }
78
79 } // namespace panda::es2panda::binder
80