blob: 3ae8724e967b4b5ce85148802fd3058daab0ade7 (
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
|
#pragma once
#include "base.h"
namespace cru
{
template<typename T>
class OneTimeBuilder : public Object
{
protected:
OneTimeBuilder() = default;
public:
OneTimeBuilder(const OneTimeBuilder& other) = delete;
OneTimeBuilder(OneTimeBuilder&& other) = delete;
OneTimeBuilder& operator=(const OneTimeBuilder& other) = delete;
OneTimeBuilder& operator=(OneTimeBuilder&& other) = delete;
virtual ~OneTimeBuilder() = default;
T* Create()
{
if (is_valid_)
{
is_valid_ = false;
return OnCreate();
}
else
throw std::runtime_error("OneTimeBuilder is invalid.");
}
bool IsValid() const
{
return is_valid_;
}
protected:
virtual T* OnCreate() = 0;
private:
bool is_valid_ = true;
};
}
|
