/usr/include/crypto++/smartptr.h is in libcrypto++-dev 5.6.1-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | #ifndef CRYPTOPP_SMARTPTR_H
#define CRYPTOPP_SMARTPTR_H
#include "config.h"
#include <algorithm>
NAMESPACE_BEGIN(CryptoPP)
template <class T> class simple_ptr
{
public:
simple_ptr(T *p = NULL) : m_p(p) {}
~simple_ptr() {delete m_p; m_p = NULL;} // set m_p to NULL so double destruction (which might occur in Singleton) will be harmless
T *m_p;
};
template <class T> class member_ptr
{
public:
explicit member_ptr(T *p = NULL) : m_p(p) {}
~member_ptr();
const T& operator*() const { return *m_p; }
T& operator*() { return *m_p; }
const T* operator->() const { return m_p; }
T* operator->() { return m_p; }
const T* get() const { return m_p; }
T* get() { return m_p; }
T* release()
{
T *old_p = m_p;
m_p = 0;
return old_p;
}
void reset(T *p = 0);
protected:
member_ptr(const member_ptr<T>& rhs); // copy not allowed
void operator=(const member_ptr<T>& rhs); // assignment not allowed
T *m_p;
};
template <class T> member_ptr<T>::~member_ptr() {delete m_p;}
template <class T> void member_ptr<T>::reset(T *p) {delete m_p; m_p = p;}
// ********************************************************
template<class T> class value_ptr : public member_ptr<T>
{
public:
value_ptr(const T &obj) : member_ptr<T>(new T(obj)) {}
value_ptr(T *p = NULL) : member_ptr<T>(p) {}
value_ptr(const value_ptr<T>& rhs)
: member_ptr<T>(rhs.m_p ? new T(*rhs.m_p) : NULL) {}
value_ptr<T>& operator=(const value_ptr<T>& rhs);
bool operator==(const value_ptr<T>& rhs)
{
return (!this->m_p && !rhs.m_p) || (this->m_p && rhs.m_p && *this->m_p == *rhs.m_p);
}
};
template <class T> value_ptr<T>& value_ptr<T>::operator=(const value_ptr<T>& rhs)
{
T *old_p = this->m_p;
this->m_p = rhs.m_p ? new T(*rhs.m_p) : NULL;
delete old_p;
return *this;
}
// ********************************************************
template<class T> class clonable_ptr : public member_ptr<T>
{
public:
clonable_ptr(const T &obj) : member_ptr<T>(obj.Clone()) {}
clonable_ptr(T *p = NULL) : member_ptr<T>(p) {}
clonable_ptr(const clonable_ptr<T>& rhs)
: member_ptr<T>(rhs.m_p ? rhs.m_p->Clone() : NULL) {}
clonable_ptr<T>& operator=(const clonable_ptr<T>& rhs);
};
template <class T> clonable_ptr<T>& clonable_ptr<T>::operator=(const clonable_ptr<T>& rhs)
{
T *old_p = this->m_p;
this->m_p = rhs.m_p ? rhs.m_p->Clone() : NULL;
delete old_p;
return *this;
}
// ********************************************************
template<class T> class counted_ptr
{
public:
explicit counted_ptr(T *p = 0);
counted_ptr(const T &r) : m_p(0) {attach(r);}
counted_ptr(const counted_ptr<T>& rhs);
~counted_ptr();
const T& operator*() const { return *m_p; }
T& operator*() { return *m_p; }
const T* operator->() const { return m_p; }
T* operator->() { return get(); }
const T* get() const { return m_p; }
T* get();
void attach(const T &p);
counted_ptr<T> & operator=(const counted_ptr<T>& rhs);
private:
T *m_p;
};
template <class T> counted_ptr<T>::counted_ptr(T *p)
: m_p(p)
{
if (m_p)
m_p->m_referenceCount = 1;
}
template <class T> counted_ptr<T>::counted_ptr(const counted_ptr<T>& rhs)
: m_p(rhs.m_p)
{
if (m_p)
m_p->m_referenceCount++;
}
template <class T> counted_ptr<T>::~counted_ptr()
{
if (m_p && --m_p->m_referenceCount == 0)
delete m_p;
}
template <class T> void counted_ptr<T>::attach(const T &r)
{
if (m_p && --m_p->m_referenceCount == 0)
delete m_p;
if (r.m_referenceCount == 0)
{
m_p = r.clone();
m_p->m_referenceCount = 1;
}
else
{
m_p = const_cast<T *>(&r);
m_p->m_referenceCount++;
}
}
template <class T> T* counted_ptr<T>::get()
{
if (m_p && m_p->m_referenceCount > 1)
{
T *temp = m_p->clone();
m_p->m_referenceCount--;
m_p = temp;
m_p->m_referenceCount = 1;
}
return m_p;
}
template <class T> counted_ptr<T> & counted_ptr<T>::operator=(const counted_ptr<T>& rhs)
{
if (m_p != rhs.m_p)
{
if (m_p && --m_p->m_referenceCount == 0)
delete m_p;
m_p = rhs.m_p;
if (m_p)
m_p->m_referenceCount++;
}
return *this;
}
// ********************************************************
template <class T> class vector_member_ptrs
{
public:
vector_member_ptrs(size_t size=0)
: m_size(size), m_ptr(new member_ptr<T>[size]) {}
~vector_member_ptrs()
{delete [] this->m_ptr;}
member_ptr<T>& operator[](size_t index)
{assert(index<this->m_size); return this->m_ptr[index];}
const member_ptr<T>& operator[](size_t index) const
{assert(index<this->m_size); return this->m_ptr[index];}
size_t size() const {return this->m_size;}
void resize(size_t newSize)
{
member_ptr<T> *newPtr = new member_ptr<T>[newSize];
for (size_t i=0; i<this->m_size && i<newSize; i++)
newPtr[i].reset(this->m_ptr[i].release());
delete [] this->m_ptr;
this->m_size = newSize;
this->m_ptr = newPtr;
}
private:
vector_member_ptrs(const vector_member_ptrs<T> &c); // copy not allowed
void operator=(const vector_member_ptrs<T> &x); // assignment not allowed
size_t m_size;
member_ptr<T> *m_ptr;
};
NAMESPACE_END
#endif
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