1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*
* Copyright (C) 2015-2022 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "JSSegmentedVariableObject.h"
namespace JSC {
class JSGlobalLexicalEnvironment final : public JSSegmentedVariableObject {
public:
using Base = JSSegmentedVariableObject;
static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | OverridesPut;
template<typename CellType, SubspaceAccess mode>
static GCClient::IsoSubspace* subspaceFor(VM& vm)
{
return &vm.globalLexicalEnvironmentSpace();
}
static JSGlobalLexicalEnvironment* create(VM& vm, Structure* structure, JSScope* parentScope)
{
JSGlobalLexicalEnvironment* result =
new (NotNull, allocateCell<JSGlobalLexicalEnvironment>(vm)) JSGlobalLexicalEnvironment(vm, structure, parentScope);
result->finishCreation(vm);
result->symbolTable()->setScopeType(SymbolTable::ScopeType::GlobalLexicalScope);
return result;
}
static bool getOwnPropertySlot(JSObject*, JSGlobalObject*, PropertyName, PropertySlot&);
static bool put(JSCell*, JSGlobalObject*, PropertyName, JSValue, PutPropertySlot&);
static void destroy(JSCell*);
static constexpr DestructionMode needsDestruction = NeedsDestruction;
bool isEmpty() const { return !symbolTable()->size(); }
bool isConstVariable(UniquedStringImpl*);
DECLARE_INFO;
inline static Structure* createStructure(VM&, JSGlobalObject*);
private:
JSGlobalLexicalEnvironment(VM& vm, Structure* structure, JSScope* scope)
: Base(vm, structure, scope)
{
}
};
} // namespace JSC
|
