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
|
/*
* Copyright (C) 2013 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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 THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_FUNCTION_H_
#define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_FUNCTION_H_
#include "third_party/blink/renderer/bindings/core/v8/custom_wrappable_adapter.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "v8/include/v8.h"
namespace blink {
// A common way of using ScriptFunction is as follows:
//
// class DerivedFunction : public ScriptFunction {
// // This returns a V8 function which the DerivedFunction is bound to.
// // The DerivedFunction is destroyed when the V8 function is
// // garbage-collected.
// static v8::Local<v8::Function> CreateFunction(ScriptState* script_state) {
// DerivedFunction* self = new DerivedFunction(script_state);
// return self->BindToV8Function();
// }
// };
class CORE_EXPORT ScriptFunction : public CustomWrappableAdapter {
public:
~ScriptFunction() override = default;
void Trace(Visitor*) override;
const char* NameInHeapSnapshot() const override { return "ScriptFunction"; }
protected:
explicit ScriptFunction(ScriptState* script_state)
: script_state_(script_state) {}
ScriptState* GetScriptState() const { return script_state_; }
v8::Local<v8::Function> BindToV8Function();
private:
// Subclasses should implement one of Call() or CallRaw(). Most will implement
// Call().
virtual ScriptValue Call(ScriptValue);
// To support more than one argument, or for low-level access to the V8 API,
// implement CallRaw(). The default implementation delegates to Call().
virtual void CallRaw(const v8::FunctionCallbackInfo<v8::Value>&);
static void CallCallback(const v8::FunctionCallbackInfo<v8::Value>&);
Member<ScriptState> script_state_;
#if DCHECK_IS_ON()
// BindToV8Function() must not be called twice.
bool bind_to_v8_function_already_called_ = false;
#endif
};
} // namespace blink
#endif
|
