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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
#pragma once
// dumb_ptr.hpp - temporary new/delete wrappers
//
// Copyright © 2013 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "fwd.hpp"
#include <algorithm>
#include <utility>
namespace tmwa
{
// unmanaged new/delete-able pointer
// should be replaced by std::unique_ptr<T>
template<class T>
class dumb_ptr
{
template<class U>
friend class dumb_ptr;
T *impl;
public:
dumb_ptr() noexcept
: impl(nullptr)
{}
explicit
dumb_ptr(T *p) noexcept
: impl(p)
{}
template<class U>
dumb_ptr(dumb_ptr<U> p)
: impl(p.impl)
{}
dumb_ptr(std::nullptr_t)
: impl(nullptr)
{}
void delete_()
{
delete impl;
*this = nullptr;
}
template<class... A>
void new_(A&&... a)
{
impl = new T(std::forward<A>(a)...);
}
template<class... A>
static
dumb_ptr<T> make(A&&... a)
{
return dumb_ptr<T>(new T(std::forward<A>(a)...));
}
dumb_ptr& operator = (std::nullptr_t)
{
impl = nullptr;
return *this;
}
T& operator *() const
{
return *impl;
}
T *operator->() const
{
return impl;
}
explicit
operator bool() const
{
return impl;
}
bool operator !() const
{
return !impl;
}
friend bool operator == (dumb_ptr l, dumb_ptr r)
{
return l.impl == r.impl;
}
friend bool operator != (dumb_ptr l, dumb_ptr r)
{
return !(l == r);
}
};
// unmanaged new/delete-able pointer
// should be replaced by std::unique_ptr<T[]> or std::vector<T>
template<class T>
class dumb_ptr<T[]>
{
T *impl;
size_t sz;
public:
dumb_ptr() noexcept : impl(), sz() {}
dumb_ptr(std::nullptr_t)
: impl(nullptr), sz(0) {}
dumb_ptr(T *p, size_t z)
: impl(p)
, sz(z)
{}
void delete_()
{
delete[] impl;
*this = nullptr;
}
void new_(size_t z)
{
impl = new T[z]();
sz = z;
}
static
dumb_ptr<T[]> make(size_t z)
{
return dumb_ptr<T[]>(new T[z](), z);
}
dumb_ptr& operator = (std::nullptr_t)
{
impl = nullptr;
sz = 0;
return *this;
}
size_t size() const
{
return sz;
}
void resize(size_t z)
{
if (z == sz)
return;
T *np = new T[z]();
// not exception-safe, but we don't have a dtor anyway
size_t i = std::min(z, sz);
while (i-->0)
np[i] = std::move(impl[i]);
delete[] impl;
impl = np;
sz = z;
}
T& operator[](size_t i) const
{
return impl[i];
}
explicit
operator bool() const
{
return impl;
}
bool operator !() const
{
return !impl;
}
friend bool operator == (dumb_ptr l, dumb_ptr r)
{
return l.impl == r.impl;
}
friend bool operator != (dumb_ptr l, dumb_ptr r)
{
return !(l == r);
}
};
} // namespace tmwa
|
