Line data Source code
1 : // Copyright 2011 the V8 project authors. All rights reserved.
2 : // Use of this source code is governed by a BSD-style license that can be
3 : // found in the LICENSE file.
4 :
5 : #include "src/ast/variables.h"
6 :
7 : #include "src/ast/scopes.h"
8 : #include "src/globals.h"
9 : #include "src/objects-inl.h"
10 :
11 : namespace v8 {
12 : namespace internal {
13 :
14 : // ----------------------------------------------------------------------------
15 : // Implementation Variable.
16 :
17 64529557 : Variable::Variable(Scope* scope, const AstRawString* name, VariableMode mode,
18 : VariableKind kind, InitializationFlag initialization_flag,
19 : MaybeAssignedFlag maybe_assigned_flag)
20 : : scope_(scope),
21 : name_(name),
22 : local_if_not_shadowed_(nullptr),
23 : next_(nullptr),
24 : index_(-1),
25 : initializer_position_(kNoSourcePosition),
26 : bit_field_(MaybeAssignedFlagField::encode(maybe_assigned_flag) |
27 : InitializationFlagField::encode(initialization_flag) |
28 : VariableModeField::encode(mode) | IsUsedField::encode(false) |
29 : ForceContextAllocationField::encode(false) |
30 : LocationField::encode(VariableLocation::UNALLOCATED) |
31 258118228 : VariableKindField::encode(kind)) {
32 : // Var declared variables never need initialization.
33 : DCHECK(!(mode == VAR && initialization_flag == kNeedsInitialization));
34 64529557 : }
35 :
36 :
37 62440593 : bool Variable::IsGlobalObjectProperty() const {
38 : // Temporaries are never global, they must always be allocated in the
39 : // activation frame.
40 106316808 : return (IsDynamicVariableMode(mode()) || mode() == VAR) &&
41 151509164 : scope_ != nullptr && scope_->is_script_scope();
42 : }
43 :
44 : } // namespace internal
45 : } // namespace v8
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