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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
* Copyright (C) 2012-2015 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.
*/
#ifndef UnlinkedFunctionExecutable_h
#define UnlinkedFunctionExecutable_h
#include "BytecodeConventions.h"
#include "CodeSpecializationKind.h"
#include "CodeType.h"
#include "ConstructAbility.h"
#include "ExecutableInfo.h"
#include "ExpressionRangeInfo.h"
#include "HandlerInfo.h"
#include "Identifier.h"
#include "JSCell.h"
#include "JSString.h"
#include "ParserModes.h"
#include "RegExp.h"
#include "SpecialPointer.h"
#include "VariableEnvironment.h"
#include "VirtualRegister.h"
#include <wtf/RefCountedArray.h>
#include <wtf/Vector.h>
namespace JSC {
class FunctionMetadataNode;
class FunctionExecutable;
class ParserError;
class SourceCode;
class SourceProvider;
class UnlinkedFunctionCodeBlock;
enum UnlinkedFunctionKind {
UnlinkedNormalFunction,
UnlinkedBuiltinFunction,
};
class UnlinkedFunctionExecutable final : public JSCell {
public:
friend class CodeCache;
friend class VM;
typedef JSCell Base;
static const unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
static UnlinkedFunctionExecutable* create(VM* vm, const SourceCode& source, FunctionMetadataNode* node, UnlinkedFunctionKind unlinkedFunctionKind, ConstructAbility constructAbility, VariableEnvironment& parentScopeTDZVariables, DerivedContextType derivedContextType, RefPtr<SourceProvider>&& sourceOverride = nullptr)
{
UnlinkedFunctionExecutable* instance = new (NotNull, allocateCell<UnlinkedFunctionExecutable>(vm->heap))
UnlinkedFunctionExecutable(vm, vm->unlinkedFunctionExecutableStructure.get(), source, WTFMove(sourceOverride), node, unlinkedFunctionKind, constructAbility, parentScopeTDZVariables, derivedContextType);
instance->finishCreation(*vm);
return instance;
}
const Identifier& name() const { return m_name; }
const Identifier& inferredName() const { return m_inferredName; }
JSString* nameValue() const { return m_nameValue.get(); }
void setNameValue(VM& vm, JSString* nameValue) { m_nameValue.set(vm, this, nameValue); }
unsigned parameterCount() const { return m_parameterCount; };
SourceParseMode parseMode() const { return static_cast<SourceParseMode>(m_sourceParseMode); };
bool isInStrictContext() const { return m_isInStrictContext; }
FunctionMode functionMode() const { return static_cast<FunctionMode>(m_functionMode); }
ConstructorKind constructorKind() const { return static_cast<ConstructorKind>(m_constructorKind); }
SuperBinding superBinding() const { return static_cast<SuperBinding>(m_superBinding); }
unsigned unlinkedFunctionNameStart() const { return m_unlinkedFunctionNameStart; }
unsigned unlinkedBodyStartColumn() const { return m_unlinkedBodyStartColumn; }
unsigned unlinkedBodyEndColumn() const { return m_unlinkedBodyEndColumn; }
unsigned startOffset() const { return m_startOffset; }
unsigned sourceLength() { return m_sourceLength; }
unsigned parametersStartOffset() const { return m_parametersStartOffset; }
unsigned typeProfilingStartOffset() const { return m_typeProfilingStartOffset; }
unsigned typeProfilingEndOffset() const { return m_typeProfilingEndOffset; }
void setInvalidTypeProfilingOffsets();
UnlinkedFunctionCodeBlock* unlinkedCodeBlockFor(
VM&, const SourceCode&, CodeSpecializationKind, DebuggerMode, ProfilerMode,
ParserError&, SourceParseMode);
static UnlinkedFunctionExecutable* fromGlobalCode(
const Identifier&, ExecState&, const SourceCode&, JSObject*& exception,
int overrideLineNumber);
JS_EXPORT_PRIVATE FunctionExecutable* link(VM&, const SourceCode&, int overrideLineNumber = -1);
void clearCode()
{
m_unlinkedCodeBlockForCall.clear();
m_unlinkedCodeBlockForConstruct.clear();
}
void recordParse(CodeFeatures features, bool hasCapturedVariables)
{
m_features = features;
m_hasCapturedVariables = hasCapturedVariables;
}
CodeFeatures features() const { return m_features; }
bool hasCapturedVariables() const { return m_hasCapturedVariables; }
static const bool needsDestruction = true;
static void destroy(JSCell*);
bool isBuiltinFunction() const { return m_isBuiltinFunction; }
ConstructAbility constructAbility() const { return static_cast<ConstructAbility>(m_constructAbility); }
bool isClassConstructorFunction() const { return constructorKind() != ConstructorKind::None; }
const VariableEnvironment* parentScopeTDZVariables() const { return &m_parentScopeTDZVariables; }
bool isArrowFunction() const { return parseMode() == SourceParseMode::ArrowFunctionMode; }
JSC::DerivedContextType derivedContextType() const {return static_cast<JSC::DerivedContextType>(m_derivedContextType); }
private:
UnlinkedFunctionExecutable(VM*, Structure*, const SourceCode&, RefPtr<SourceProvider>&& sourceOverride, FunctionMetadataNode*, UnlinkedFunctionKind, ConstructAbility, VariableEnvironment&, JSC::DerivedContextType);
unsigned m_firstLineOffset;
unsigned m_lineCount;
unsigned m_unlinkedFunctionNameStart;
unsigned m_unlinkedBodyStartColumn;
unsigned m_unlinkedBodyEndColumn;
unsigned m_startOffset;
unsigned m_sourceLength;
unsigned m_parametersStartOffset;
unsigned m_typeProfilingStartOffset;
unsigned m_typeProfilingEndOffset;
unsigned m_parameterCount;
CodeFeatures m_features;
unsigned m_isInStrictContext : 1;
unsigned m_hasCapturedVariables : 1;
unsigned m_isBuiltinFunction : 1;
unsigned m_constructAbility: 1;
unsigned m_constructorKind : 2;
unsigned m_functionMode : 1; // FunctionMode
unsigned m_superBinding : 1;
unsigned m_derivedContextType: 2;
unsigned m_sourceParseMode : 4; // SourceParseMode
WriteBarrier<UnlinkedFunctionCodeBlock> m_unlinkedCodeBlockForCall;
WriteBarrier<UnlinkedFunctionCodeBlock> m_unlinkedCodeBlockForConstruct;
Identifier m_name;
Identifier m_inferredName;
WriteBarrier<JSString> m_nameValue;
RefPtr<SourceProvider> m_sourceOverride;
VariableEnvironment m_parentScopeTDZVariables;
protected:
void finishCreation(VM& vm)
{
Base::finishCreation(vm);
m_nameValue.set(vm, this, jsString(&vm, name().string()));
}
static void visitChildren(JSCell*, SlotVisitor&);
public:
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
{
return Structure::create(vm, globalObject, proto, TypeInfo(UnlinkedFunctionExecutableType, StructureFlags), info());
}
DECLARE_EXPORT_INFO;
};
} // namespace JSC
#endif // UnlinkedFunctionExecutable_h
|
