blob: 0005e4edb666a88c98c0da03ab824de68d7deaa6 (
plain) (
blame)
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
|
#pragma once
#include "concepts.h"
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
// We have one really strange rule in our codestyle - mutable arguments are passed by pointer.
// But if you are not a fan of making your life indefinite,
// you can use this helper, that will validate that pointer you pass is not null.
template <class T>
class TNonNullPtr;
template <class T>
class TNonNullPtrBase
{
public:
TNonNullPtrBase(T* ptr) noexcept;
TNonNullPtrBase(const TNonNullPtrBase& other) = default;
TNonNullPtrBase(std::nullptr_t) = delete;
TNonNullPtrBase operator=(const TNonNullPtrBase&) = delete;
T* operator->() const noexcept;
T& operator*() const noexcept;
protected:
T* Ptr_;
TNonNullPtrBase() noexcept;
};
template <class T>
TNonNullPtr<T> GetPtr(T& ref) noexcept;
template <class T>
class TNonNullPtr
: public TNonNullPtrBase<T>
{
using TConstPtr = TNonNullPtr<const T>;
friend TConstPtr;
using TNonNullPtrBase<T>::TNonNullPtrBase;
friend TNonNullPtr<T> GetPtr<T>(T& ref) noexcept;
};
// NB(pogorelov): Method definitions placed in .h file (instead of -inl.h) because of clang16 bug.
// TODO(pogorelov): Move method definitions to helpers-inl.h when new clang will be used.
template <CConst T>
class TNonNullPtr<T>
: public TNonNullPtrBase<T>
{
using TMutPtr = TNonNullPtr<std::remove_const_t<T>>;
using TNonNullPtrBase<T>::TNonNullPtrBase;
friend TNonNullPtr<T> GetPtr<T>(T& ref) noexcept;
public:
TNonNullPtr(TMutPtr mutPtr) noexcept
: TNonNullPtrBase<T>()
{
TNonNullPtrBase<T>::Ptr_ = mutPtr.Ptr_;
}
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
#define NON_NULL_PTR_H_
#include "non_null_ptr-inl.h"
#undef NON_NULL_PTR_H_
|
