blob: ef720584c1a40c89c578207769bcbc646704d8f5 (
plain)
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
|
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Badge.h>
#include <AK/Noncopyable.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <LibJS/Forward.h>
namespace JS {
class HandleImpl : public RefCounted<HandleImpl> {
AK_MAKE_NONCOPYABLE(HandleImpl);
AK_MAKE_NONMOVABLE(HandleImpl);
public:
~HandleImpl();
Cell* cell() { return m_cell; }
const Cell* cell() const { return m_cell; }
private:
template<class T>
friend class Handle;
explicit HandleImpl(Cell*);
Cell* m_cell { nullptr };
};
template<class T>
class Handle {
public:
Handle() { }
static Handle create(T* cell)
{
return Handle(adopt(*new HandleImpl(cell)));
}
T* cell() { return static_cast<T*>(m_impl->cell()); }
const T* cell() const { return static_cast<const T*>(m_impl->cell()); }
bool is_null() const { return m_impl.is_null(); }
private:
explicit Handle(NonnullRefPtr<HandleImpl> impl)
: m_impl(move(impl))
{
}
RefPtr<HandleImpl> m_impl;
};
template<class T>
inline Handle<T> make_handle(T* cell)
{
return Handle<T>::create(cell);
}
}
|
