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 2016 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_API_API_ARGUMENTS_H_
#define V8_API_API_ARGUMENTS_H_
#include "include/v8-template.h"
#include "src/api/api.h"
#include "src/debug/debug.h"
#include "src/execution/isolate.h"
#include "src/objects/slots.h"
#include "src/objects/visitors.h"
namespace v8 {
namespace internal {
// Custom arguments replicate a small segment of stack that can be
// accessed through an Arguments object the same way the actual stack
// can.
class CustomArgumentsBase : public Relocatable {
protected:
explicit inline CustomArgumentsBase(Isolate* isolate);
};
template <typename T>
class CustomArguments : public CustomArgumentsBase {
public:
static const int kReturnValueOffset = T::kReturnValueIndex;
~CustomArguments() override;
inline void IterateInstance(RootVisitor* v) override {
v->VisitRootPointers(Root::kRelocatable, nullptr, slot_at(0),
slot_at(T::kArgsLength));
}
protected:
explicit inline CustomArguments(Isolate* isolate)
: CustomArgumentsBase(isolate) {}
template <typename V>
Handle<V> GetReturnValue(Isolate* isolate);
inline Isolate* isolate() {
return reinterpret_cast<Isolate*>((*slot_at(T::kIsolateIndex)).ptr());
}
inline FullObjectSlot slot_at(int index) {
// This allows index == T::kArgsLength so "one past the end" slots
// can be retrieved for iterating purposes.
DCHECK_LE(static_cast<unsigned>(index),
static_cast<unsigned>(T::kArgsLength));
return FullObjectSlot(values_ + index);
}
Address values_[T::kArgsLength];
};
// Note: Calling args.Call() sets the return value on args. For multiple
// Call()'s, a new args should be used every time.
class PropertyCallbackArguments
: public CustomArguments<PropertyCallbackInfo<Value> > {
public:
using T = PropertyCallbackInfo<Value>;
using Super = CustomArguments<T>;
static const int kArgsLength = T::kArgsLength;
static const int kThisIndex = T::kThisIndex;
static const int kHolderIndex = T::kHolderIndex;
static const int kDataIndex = T::kDataIndex;
static const int kReturnValueDefaultValueIndex =
T::kReturnValueDefaultValueIndex;
static const int kIsolateIndex = T::kIsolateIndex;
static const int kShouldThrowOnErrorIndex = T::kShouldThrowOnErrorIndex;
PropertyCallbackArguments(Isolate* isolate, Object data, Object self,
JSObject holder, Maybe<ShouldThrow> should_throw);
// Don't copy PropertyCallbackArguments, because they would both have the
// same prev_ pointer.
PropertyCallbackArguments(const PropertyCallbackArguments&) = delete;
PropertyCallbackArguments& operator=(const PropertyCallbackArguments&) =
delete;
// -------------------------------------------------------------------------
// Accessor Callbacks
// Also used for AccessorSetterCallback.
inline Handle<Object> CallAccessorSetter(Handle<AccessorInfo> info,
Handle<Name> name,
Handle<Object> value);
// Also used for AccessorGetterCallback, AccessorNameGetterCallback.
inline Handle<Object> CallAccessorGetter(Handle<AccessorInfo> info,
Handle<Name> name);
// -------------------------------------------------------------------------
// Named Interceptor Callbacks
inline Handle<Object> CallNamedQuery(Handle<InterceptorInfo> interceptor,
Handle<Name> name);
inline Handle<Object> CallNamedGetter(Handle<InterceptorInfo> interceptor,
Handle<Name> name);
inline Handle<Object> CallNamedSetter(Handle<InterceptorInfo> interceptor,
Handle<Name> name,
Handle<Object> value);
inline Handle<Object> CallNamedDefiner(Handle<InterceptorInfo> interceptor,
Handle<Name> name,
const v8::PropertyDescriptor& desc);
inline Handle<Object> CallNamedDeleter(Handle<InterceptorInfo> interceptor,
Handle<Name> name);
inline Handle<Object> CallNamedDescriptor(Handle<InterceptorInfo> interceptor,
Handle<Name> name);
inline Handle<JSObject> CallNamedEnumerator(
Handle<InterceptorInfo> interceptor);
// -------------------------------------------------------------------------
// Indexed Interceptor Callbacks
inline Handle<Object> CallIndexedQuery(Handle<InterceptorInfo> interceptor,
uint32_t index);
inline Handle<Object> CallIndexedGetter(Handle<InterceptorInfo> interceptor,
uint32_t index);
inline Handle<Object> CallIndexedSetter(Handle<InterceptorInfo> interceptor,
uint32_t index, Handle<Object> value);
inline Handle<Object> CallIndexedDefiner(Handle<InterceptorInfo> interceptor,
uint32_t index,
const v8::PropertyDescriptor& desc);
inline Handle<Object> CallIndexedDeleter(Handle<InterceptorInfo> interceptor,
uint32_t index);
inline Handle<Object> CallIndexedDescriptor(
Handle<InterceptorInfo> interceptor, uint32_t index);
inline Handle<JSObject> CallIndexedEnumerator(
Handle<InterceptorInfo> interceptor);
private:
/*
* The following Call functions wrap the calling of all callbacks to handle
* calling either the old or the new style callbacks depending on which one
* has been registered.
* For old callbacks which return an empty handle, the ReturnValue is checked
* and used if it's been set to anything inside the callback.
* New style callbacks always use the return value.
*/
inline Handle<JSObject> CallPropertyEnumerator(
Handle<InterceptorInfo> interceptor);
inline Handle<Object> BasicCallIndexedGetterCallback(
IndexedPropertyGetterCallback f, uint32_t index, Handle<Object> info);
inline Handle<Object> BasicCallNamedGetterCallback(
GenericNamedPropertyGetterCallback f, Handle<Name> name,
Handle<Object> info, Handle<Object> receiver = Handle<Object>());
inline JSObject holder();
inline Object receiver();
};
class FunctionCallbackArguments
: public CustomArguments<FunctionCallbackInfo<Value> > {
public:
using T = FunctionCallbackInfo<Value>;
using Super = CustomArguments<T>;
static const int kArgsLength = T::kArgsLength;
static const int kHolderIndex = T::kHolderIndex;
static const int kDataIndex = T::kDataIndex;
static const int kReturnValueDefaultValueIndex =
T::kReturnValueDefaultValueIndex;
static const int kIsolateIndex = T::kIsolateIndex;
static const int kNewTargetIndex = T::kNewTargetIndex;
FunctionCallbackArguments(Isolate* isolate, Object data, HeapObject callee,
Object holder, HeapObject new_target, Address* argv,
int argc);
/*
* The following Call function wraps the calling of all callbacks to handle
* calling either the old or the new style callbacks depending on which one
* has been registered.
* For old callbacks which return an empty handle, the ReturnValue is checked
* and used if it's been set to anything inside the callback.
* New style callbacks always use the return value.
*/
inline Handle<Object> Call(CallHandlerInfo handler);
private:
inline JSReceiver holder();
internal::Address* argv_;
int argc_;
};
} // namespace internal
} // namespace v8
#endif // V8_API_API_ARGUMENTS_H_
|
