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
|
// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_ACCESSORS_H_
#define V8_ACCESSORS_H_
#include "include/v8.h"
#include "src/allocation.h"
#include "src/globals.h"
#include "src/property-details.h"
namespace v8 {
namespace internal {
// Forward declarations.
class AccessorInfo;
template <typename T>
class Handle;
class FieldIndex;
class JavaScriptFrame;
// The list of accessor descriptors. This is a second-order macro
// taking a macro to be applied to all accessor descriptor names.
// V(accessor_name, AccessorName, GetterSideEffectType, SetterSideEffectType)
#define ACCESSOR_INFO_LIST_GENERATOR(V, _) \
V(_, arguments_iterator, ArgumentsIterator, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, array_length, ArrayLength, kHasNoSideEffect, kHasSideEffectToReceiver) \
V(_, bound_function_length, BoundFunctionLength, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, bound_function_name, BoundFunctionName, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, error_stack, ErrorStack, kHasSideEffectToReceiver, \
kHasSideEffectToReceiver) \
V(_, function_arguments, FunctionArguments, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, function_caller, FunctionCaller, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, function_name, FunctionName, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, function_length, FunctionLength, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, function_prototype, FunctionPrototype, kHasNoSideEffect, \
kHasSideEffectToReceiver) \
V(_, string_length, StringLength, kHasNoSideEffect, kHasSideEffectToReceiver)
#define ACCESSOR_SETTER_LIST(V) \
V(ArrayLengthSetter) \
V(ErrorStackSetter) \
V(FunctionPrototypeSetter) \
V(ModuleNamespaceEntrySetter) \
V(ReconfigureToDataProperty)
// Accessors contains all predefined proxy accessors.
class Accessors : public AllStatic {
public:
#define ACCESSOR_GETTER_DECLARATION(_, accessor_name, AccessorName, ...) \
static void AccessorName##Getter( \
v8::Local<v8::Name> name, \
const v8::PropertyCallbackInfo<v8::Value>& info);
ACCESSOR_INFO_LIST_GENERATOR(ACCESSOR_GETTER_DECLARATION, /* not used */)
#undef ACCESSOR_GETTER_DECLARATION
#define ACCESSOR_SETTER_DECLARATION(accessor_name) \
static void accessor_name( \
v8::Local<v8::Name> name, v8::Local<v8::Value> value, \
const v8::PropertyCallbackInfo<v8::Boolean>& info);
ACCESSOR_SETTER_LIST(ACCESSOR_SETTER_DECLARATION)
#undef ACCESSOR_SETTER_DECLARATION
static constexpr int kAccessorInfoCount =
#define COUNT_ACCESSOR(...) +1
ACCESSOR_INFO_LIST_GENERATOR(COUNT_ACCESSOR, /* not used */);
#undef COUNT_ACCESSOR
static constexpr int kAccessorSetterCount =
#define COUNT_ACCESSOR(...) +1
ACCESSOR_SETTER_LIST(COUNT_ACCESSOR);
#undef COUNT_ACCESSOR
static void ModuleNamespaceEntryGetter(
v8::Local<v8::Name> name,
const v8::PropertyCallbackInfo<v8::Value>& info);
static Handle<AccessorInfo> MakeModuleNamespaceEntryInfo(Isolate* isolate,
Handle<String> name);
// Accessor function called directly from the runtime system. Returns the
// newly materialized arguments object for the given {frame}. Note that for
// optimized frames it is possible to specify an {inlined_jsframe_index}.
static Handle<JSObject> FunctionGetArguments(JavaScriptFrame* frame,
int inlined_jsframe_index);
// Returns true for properties that are accessors to object fields.
// If true, the matching FieldIndex is returned through |field_index|.
static bool IsJSObjectFieldAccessor(Isolate* isolate, Handle<Map> map,
Handle<Name> name,
FieldIndex* field_index);
static MaybeHandle<Object> ReplaceAccessorWithDataProperty(
Handle<Object> receiver, Handle<JSObject> holder, Handle<Name> name,
Handle<Object> value);
// Create an AccessorInfo. The setter is optional (can be nullptr).
//
// Note that the type of setter is AccessorNameBooleanSetterCallback instead
// of v8::AccessorNameSetterCallback. The difference is that the former can
// set a (boolean) return value. The setter should roughly follow the same
// conventions as many of the internal methods in objects.cc:
// - The return value is unset iff there was an exception.
// - If the ShouldThrow argument is true, the return value must not be false.
typedef void (*AccessorNameBooleanSetterCallback)(
Local<v8::Name> property, Local<v8::Value> value,
const PropertyCallbackInfo<v8::Boolean>& info);
static Handle<AccessorInfo> MakeAccessor(
Isolate* isolate, Handle<Name> name, AccessorNameGetterCallback getter,
AccessorNameBooleanSetterCallback setter);
private:
#define ACCESSOR_INFO_DECLARATION(_, accessor_name, AccessorName, ...) \
static Handle<AccessorInfo> Make##AccessorName##Info(Isolate* isolate);
ACCESSOR_INFO_LIST_GENERATOR(ACCESSOR_INFO_DECLARATION, /* not used */)
#undef ACCESSOR_INFO_DECLARATION
friend class Heap;
};
} // namespace internal
} // namespace v8
#endif // V8_ACCESSORS_H_
|
