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
191
192
193
194
195
|
/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef ClassInfo_h
#define ClassInfo_h
#include "CallFrame.h"
#include "ConstructData.h"
#include "JSCell.h"
namespace JSC {
class HashEntry;
struct HashTable;
struct MethodTable {
typedef void (*DestroyFunctionPtr)(JSCell*);
DestroyFunctionPtr destroy;
typedef void (*VisitChildrenFunctionPtr)(JSCell*, SlotVisitor&);
VisitChildrenFunctionPtr visitChildren;
typedef void (*CopyBackingStoreFunctionPtr)(JSCell*, CopyVisitor&);
CopyBackingStoreFunctionPtr copyBackingStore;
typedef CallType (*GetCallDataFunctionPtr)(JSCell*, CallData&);
GetCallDataFunctionPtr getCallData;
typedef ConstructType (*GetConstructDataFunctionPtr)(JSCell*, ConstructData&);
GetConstructDataFunctionPtr getConstructData;
typedef void (*PutFunctionPtr)(JSCell*, ExecState*, PropertyName propertyName, JSValue, PutPropertySlot&);
PutFunctionPtr put;
typedef void (*PutByIndexFunctionPtr)(JSCell*, ExecState*, unsigned propertyName, JSValue, bool shouldThrow);
PutByIndexFunctionPtr putByIndex;
typedef bool (*DeletePropertyFunctionPtr)(JSCell*, ExecState*, PropertyName);
DeletePropertyFunctionPtr deleteProperty;
typedef bool (*DeletePropertyByIndexFunctionPtr)(JSCell*, ExecState*, unsigned);
DeletePropertyByIndexFunctionPtr deletePropertyByIndex;
typedef bool (*GetOwnPropertySlotFunctionPtr)(JSCell*, ExecState*, PropertyName, PropertySlot&);
GetOwnPropertySlotFunctionPtr getOwnPropertySlot;
typedef bool (*GetOwnPropertySlotByIndexFunctionPtr)(JSCell*, ExecState*, unsigned, PropertySlot&);
GetOwnPropertySlotByIndexFunctionPtr getOwnPropertySlotByIndex;
typedef JSObject* (*ToThisObjectFunctionPtr)(JSCell*, ExecState*);
ToThisObjectFunctionPtr toThisObject;
typedef JSValue (*DefaultValueFunctionPtr)(const JSObject*, ExecState*, PreferredPrimitiveType);
DefaultValueFunctionPtr defaultValue;
typedef void (*GetOwnPropertyNamesFunctionPtr)(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
GetOwnPropertyNamesFunctionPtr getOwnPropertyNames;
typedef void (*GetOwnNonIndexPropertyNamesFunctionPtr)(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
GetOwnNonIndexPropertyNamesFunctionPtr getOwnNonIndexPropertyNames;
typedef void (*GetPropertyNamesFunctionPtr)(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
GetPropertyNamesFunctionPtr getPropertyNames;
typedef String (*ClassNameFunctionPtr)(const JSObject*);
ClassNameFunctionPtr className;
typedef bool (*CustomHasInstanceFunctionPtr)(JSObject*, ExecState*, JSValue);
CustomHasInstanceFunctionPtr customHasInstance;
typedef void (*PutWithAttributesFunctionPtr)(JSObject*, ExecState*, PropertyName propertyName, JSValue, unsigned attributes);
PutWithAttributesFunctionPtr putDirectVirtual;
typedef bool (*DefineOwnPropertyFunctionPtr)(JSObject*, ExecState*, PropertyName, PropertyDescriptor&, bool);
DefineOwnPropertyFunctionPtr defineOwnProperty;
typedef bool (*GetOwnPropertyDescriptorFunctionPtr)(JSObject*, ExecState*, PropertyName, PropertyDescriptor&);
GetOwnPropertyDescriptorFunctionPtr getOwnPropertyDescriptor;
};
#define CREATE_MEMBER_CHECKER(member) \
template <typename T> \
struct MemberCheck##member { \
struct Fallback { \
void member(...); \
}; \
struct Derived : T, Fallback { }; \
template <typename U, U> struct Check; \
typedef char Yes[2]; \
typedef char No[1]; \
template <typename U> \
static No &func(Check<void (Fallback::*)(...), &U::member>*); \
template <typename U> \
static Yes &func(...); \
enum { has = sizeof(func<Derived>(0)) == sizeof(Yes) }; \
}
#define HAS_MEMBER_NAMED(klass, name) (MemberCheck##name<klass>::has)
#define CREATE_METHOD_TABLE(ClassName) { \
&ClassName::destroy, \
&ClassName::visitChildren, \
&ClassName::copyBackingStore, \
&ClassName::getCallData, \
&ClassName::getConstructData, \
&ClassName::put, \
&ClassName::putByIndex, \
&ClassName::deleteProperty, \
&ClassName::deletePropertyByIndex, \
&ClassName::getOwnPropertySlot, \
&ClassName::getOwnPropertySlotByIndex, \
&ClassName::toThisObject, \
&ClassName::defaultValue, \
&ClassName::getOwnPropertyNames, \
&ClassName::getOwnNonIndexPropertyNames, \
&ClassName::getPropertyNames, \
&ClassName::className, \
&ClassName::customHasInstance, \
&ClassName::putDirectVirtual, \
&ClassName::defineOwnProperty, \
&ClassName::getOwnPropertyDescriptor, \
}, \
ClassName::TypedArrayStorageType
struct ClassInfo {
/**
* A string denoting the class name. Example: "Window".
*/
const char* className;
/**
* Pointer to the class information of the base class.
* 0L if there is none.
*/
const ClassInfo* parentClass;
/**
* Static hash-table of properties.
* For classes that can be used from multiple threads, it is accessed via a getter function that would typically return a pointer to thread-specific value.
*/
const HashTable* propHashTable(ExecState* exec) const
{
if (classPropHashTableGetterFunction)
return classPropHashTableGetterFunction(exec);
return staticPropHashTable;
}
bool isSubClassOf(const ClassInfo* other) const
{
for (const ClassInfo* ci = this; ci; ci = ci->parentClass) {
if (ci == other)
return true;
}
return false;
}
bool hasStaticProperties() const
{
for (const ClassInfo* ci = this; ci; ci = ci->parentClass) {
if (ci->staticPropHashTable || ci->classPropHashTableGetterFunction)
return true;
}
return false;
}
const HashTable* staticPropHashTable;
typedef const HashTable* (*ClassPropHashTableGetterFunction)(ExecState*);
const ClassPropHashTableGetterFunction classPropHashTableGetterFunction;
MethodTable methodTable;
TypedArrayType typedArrayStorageType;
};
} // namespace JSC
#endif // ClassInfo_h
|
