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Blob.h
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Blob.h
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#ifndef BLOB_H
#define BLOB_H
#include <vector>
#include <memory>
#include <initializer_list>
#include <string>
#include "shared_ptr2.h"
template <typename T> class Blob;
template <typename T> class BlobPtr;
template <typename T> class ConstBlobPtr;
template <typename T>
bool operator==(const Blob<T> &, const Blob<T> &);
template <typename T>
bool operator!=(const Blob<T> &, const Blob<T> &);
template <typename T>
bool operator<(const Blob<T> &, const Blob<T> &);
template <typename T>
bool operator<=(const Blob<T> &, const Blob<T> &);
template <typename T>
bool operator>(const Blob<T> &, const Blob<T> &);
template <typename T>
bool operator>=(const Blob<T> &, const Blob<T> &);
template <typename T>
class Blob
{
friend class BlobPtr<T>;
friend class ConstBlobPtr<T>;
friend bool operator== <T>(const Blob<T> &, const Blob<T> &);
friend bool operator< <T>(const Blob<T> &, const Blob<T> &);
friend bool operator> <T>(const Blob<T> &, const Blob<T> &);
public:
typedef T value_type;
typedef typename std::vector<T>::size_type size_type;
Blob();
Blob(std::initializer_list<T> il);
template <typename It>
Blob(It b, It e);
Blob(const Blob & sb);
Blob(Blob && sb);
Blob & operator=(const Blob & rhs);
Blob & operator=(Blob && rhs);
T & back();
const T & back() const;
T & front();
const T & front() const;
T & operator[](size_type i);
const T & operator[](std::size_t) const;
size_type size() const { return data->size(); }
bool empty() const { return data->empty(); }
void push_back(const T &t) { data->push_back(t); }
void push_back(T && t) { data->push_back(std::move(t)); }
void pop_back();
private:
shared_ptr2<std::vector<T>> data;
void check(size_type i, const std::string &msg) const;
};
template <typename T>
void Blob<T>::check(size_type i,const std::string &msg) const
{
if(i >= data->size())
throw std::out_of_range(msg);
}
template <typename T>
T & Blob<T>::back()
{
check(0, "back on empty Blob");
return data->back();
}
template <typename T>
const T & Blob<T>::back() const
{
check(0, "back on empty Blob");
return data->back();
}
template <typename T>
T & Blob<T>::front()
{
check(0, "front on empty Blob");
return data->front();
}
template <typename T>
const T & Blob<T>::front() const
{
check(0, "front on empty Blob");
return data->front();
}
template <typename T>
T & Blob<T>::operator[](size_type i)
{
check(i, "subscript out of range");
return (*data)[i];
}
template <typename T>
const T & Blob<T>::operator[](std::size_t i) const
{
check(i, "subscript out of range");
return (*data)[i];
}
template <typename T>
void Blob<T>::pop_back()
{
check(0, "pop_back on empty Blob");
data->pop_back();
}
template <typename T>
Blob<T>::Blob() : data(new std::vector<T>()) { }
template <typename T>
Blob<T>::Blob(std::initializer_list<T> il) : data(new std::vector<T>(il)) { }
template <typename T>
template <typename It>
Blob<T>::Blob(It b, It e) : data(new std::vector<T>(b, e)) { }
template <typename T>
Blob<T>::Blob(const Blob & sb) : data(new std::vector<T>(*(sb.data))) { }
template <typename T>
Blob<T>::Blob(Blob && sb) : data(std::move(sb.data)) { }
template <typename T>
Blob<T> & Blob<T>::operator=(const Blob & rhs)
{
data = new std::vector<T>(*(rhs.data));
return *this;
}
template <typename T>
Blob<T> & Blob<T>::operator=(Blob && rhs)
{
data = std::move(rhs.data);
return *this;
}
template <typename T>
bool operator==(const Blob<T> & lhs, const Blob<T> & rhs)
{
return *(lhs.data) == *(rhs.data);
}
template <typename T>
bool operator!=(const Blob<T> & lhs, const Blob<T> & rhs)
{
return !(lhs == rhs);
}
template <typename T>
bool operator<(const Blob<T> & lhs, const Blob<T> & rhs)
{
return *(lhs.data) < *(rhs.data);
}
template <typename T>
bool operator<=(const Blob<T> & lhs, const Blob<T> & rhs)
{
return !(lhs > rhs);
}
template <typename T>
bool operator>(const Blob<T> & lhs, const Blob<T> & rhs)
{
return *(lhs.data) > *(rhs.data);
}
template <typename T>
bool operator>=(const Blob<T> & lhs, const Blob<T> & rhs)
{
return !(lhs < rhs);
}
#endif