blob: e603a25eaebb040051e01ffbb22f6c31837005b1 (
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
66
67
|
#pragma once
#include <stdexcept>
#include "OptionalRef.h"
namespace crepe {
template <typename T>
OptionalRef<T>::OptionalRef(T & ref) {
this->set(ref);
}
template <typename T>
OptionalRef<T>::OptionalRef(const OptionalRef<T> & other) {
this->ref = other.ref;
}
template <typename T>
OptionalRef<T>::OptionalRef(OptionalRef<T> && other) {
this->ref = other.ref;
other.clear();
}
template <typename T>
OptionalRef<T> & OptionalRef<T>::operator=(const OptionalRef<T> & other) {
this->ref = other.ref;
return *this;
}
template <typename T>
OptionalRef<T> & OptionalRef<T>::operator=(OptionalRef<T> && other) {
this->ref = other.ref;
other.clear();
return *this;
}
template <typename T>
T & OptionalRef<T>::get() const {
if (this->ref == nullptr)
throw std::runtime_error("OptionalRef: attempt to dereference nullptr");
return *this->ref;
}
template <typename T>
void OptionalRef<T>::set(T & ref) noexcept {
this->ref = &ref;
}
template <typename T>
void OptionalRef<T>::clear() noexcept {
this->ref = nullptr;
}
template <typename T>
OptionalRef<T> & OptionalRef<T>::operator=(T & ref) {
this->set(ref);
return *this;
}
template <typename T>
OptionalRef<T>::operator bool() const noexcept {
return this->ref == nullptr;
}
}
|