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blBuffer_3.hpp
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blBuffer_3.hpp
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#ifndef BL_BUFFER_3_HPP
#define BL_BUFFER_3_HPP
//-------------------------------------------------------------------
// FILE: blBuffer_3.hpp
// CLASS: blBuffer_3
// BASE CLASS: blBuffer_2
//
//
//
// PURPOSE: -- This class is based on blBuffer_2 and adds
// circular access functions turning it into a
// ring-buffer where buffer indexes can be
// positive or negative and it still works
//
// -- This class also adds circular iterators that
// can be used in stl-like algorithms because
// these circular iterators allow the user to
// specify the number of circulations/cycles to
// go through before reaching the "end" iterator
//
// -- This class is defined within the blBufferLIB
// namespace
//
//
//
// AUTHOR: Vincenzo Barbato
//
//
//
// LISENSE: MIT-LICENSE
// http://www.opensource.org/licenses/mit-license.php
//
//
//
// DEPENDENCIES: -- blBuffer_2 and all its dependencies
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Includes and libs needed for this file
//-------------------------------------------------------------------
#include "blBuffer_2.hpp"
// Used to define circular iterators
// and reverse circular iterators
#include "blCircularReverseIterator.hpp"
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// NOTE: This class is defined within the blBufferLIB namespace
//-------------------------------------------------------------------
namespace blBufferLIB
{
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// class blBuffer_3 declaration
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
class blBuffer_3 : public blBuffer_2<blDataType,blDataPtr,blMaxNumOfDimensions>
{
public: // Public type aliases
// Buffer circular iterators
using circular_iterator = blCircularIterator< blBuffer_2<blDataType,blDataPtr,blMaxNumOfDimensions>,blBufferPtr >;
using circular_const_iterator = blCircularIterator< blBuffer_2<blDataType,const blDataPtr,blMaxNumOfDimensions>,const blBufferPtr >;
using circular_reverse_iterator = blCircularReverseIterator< blBuffer_2<blDataType,blDataPtr,blMaxNumOfDimensions>,blBufferPtr >;
using circular_const_reverse_iterator = blCircularReverseIterator< blBuffer_2<blDataType,const blDataPtr,blMaxNumOfDimensions>,const blBufferPtr >;
public: // Constructors and destructors
// Default constructor
blBuffer_3();
// Copy constructor
blBuffer_3(const blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>& buffer3) = default;
// Destructor
~blBuffer_3();
public: // Overloaded operators
// Assignment operator
blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>& operator=(const blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>& buffer3) = default;
public: // Public static functions
// Function used to get a buffer
// index circularly given an index
// and a buffer size
template<typename blIntegerType>
static std::size_t circ_index(const blIntegerType& index,
const std::size_t& totalLength)
{
return static_cast<std::size_t>( (index % static_cast<blIntegerType>(totalLength) + static_cast<blIntegerType>(totalLength)) ) % totalLength;
}
public: // Public functions
// Functions used to get circular
// iterators to the buffer, where
// the user can specify the number
// of iteration cycles before
// reaching the "end" iterator
// (When maxcycles is negative then
// the iterator never reaches the
// "end" iterator)
circular_iterator circ_begin(const std::ptrdiff_t& maxNumberOfCirculations = 1);
circular_iterator circ_end();
circular_const_iterator circ_cbegin(const std::ptrdiff_t& maxNumberOfCirculations = 1)const;
circular_const_iterator circ_cend()const;
circular_reverse_iterator circ_rbegin(const std::ptrdiff_t& maxNumberOfCirculations = 1);
circular_reverse_iterator circ_rend();
circular_const_reverse_iterator circ_crbegin(const std::ptrdiff_t& maxNumberOfCirculations = 1)const;
circular_const_reverse_iterator circ_crend()const;
// Function used to get a circular
// iterator pointing in the
// user specified position in
// the buffer with a user specified
// maximum number of circulations
circular_iterator circ_iter(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations);
circular_const_iterator circ_citer(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations)const;
circular_reverse_iterator circ_riter(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations);
circular_const_reverse_iterator circ_criter(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations)const;
// "circ_at" functions used to access data
// points in the buffer circularly like in
// a ring-buffer, the indexes can be positive
// or negative
template<typename blIntegerType>
blDataType& circ_at(const blIntegerType& dataIndex);
template<typename blIntegerType>
const blDataType& circ_at(const blIntegerType& dataIndex)const;
template<typename blIntegerType>
blDataType& circ_at(const blIntegerType& rowIndex,
const blIntegerType& colIndex);
template<typename blIntegerType>
const blDataType& circ_at(const blIntegerType &rowIndex,
const blIntegerType &colIndex)const;
template<typename blIntegerType>
blDataType& circ_at(const blIntegerType& rowIndex,
const blIntegerType& colIndex,
const blIntegerType& pageIndex);
template<typename blIntegerType>
const blDataType& circ_at(const blIntegerType& rowIndex,
const blIntegerType& colIndex,
const blIntegerType& pageIndex)const;
// Generic version of
// circ_at functions
template<typename...Indexes>
blDataType& circ_at(const Indexes&...dataIndexes);
template<typename...Indexes>
const blDataType& circ_at(const Indexes&...dataIndexes)const;
template<typename blIntegerType>
blDataType& circ_at(const std::initializer_list<blIntegerType>& dataIndexes);
template<typename blIntegerType>
const blDataType& circ_at(const std::initializer_list<blIntegerType>& dataIndexes)const;
template<typename blIntegerType>
blDataType& circ_at(const std::vector<blIntegerType>& dataIndexes);
template<typename blIntegerType>
const blDataType& circ_at(const std::vector<blIntegerType>& dataIndexes)const;
};
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Default constructor
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::blBuffer_3() : blBuffer_2<blDataType,blDataPtr,blMaxNumOfDimensions>()
{
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Destructor
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::~blBuffer_3()
{
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Functions used to access buffer's circular begin/end iterators
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_begin(const std::ptrdiff_t& maxNumberOfCirculations)
{
return circular_iterator(this,0,maxNumberOfCirculations);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_end()
{
return circular_iterator(this,0,0);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_const_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_cbegin(const std::ptrdiff_t& maxNumberOfCirculations)const
{
return circular_const_iterator(this,0,maxNumberOfCirculations);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_const_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_cend()const
{
return circular_const_iterator(this,0,0);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Functions used to access buffer's circular reverse
// begin/end iterators
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_reverse_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_rbegin(const std::ptrdiff_t& maxNumberOfCirculations)
{
return circular_reverse_iterator(this,0,maxNumberOfCirculations);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_reverse_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_rend()
{
return circular_reverse_iterator(this,0,0);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_const_reverse_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_crbegin(const std::ptrdiff_t& maxNumberOfCirculations)const
{
return circular_const_reverse_iterator(this,0,maxNumberOfCirculations);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_const_reverse_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_crend()const
{
return circular_const_reverse_iterator(this,0,0);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Functions used to get a circular iterator pointing in
// a user specified buffer location and with a user specified
// maximum number of circulations/cycles before it reaches
// the "end" iterator
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_iter(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations)
{
return circular_iterator(this,startingPositionIndex,maxNumberOfCirculations);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_const_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_citer(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations)const
{
return circular_const_iterator(this,startingPositionIndex,maxNumberOfCirculations);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_reverse_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_riter(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations)
{
return circular_reverse_iterator(this,startingPositionIndex,maxNumberOfCirculations);
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
inline typename blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circular_const_reverse_iterator blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_criter(const std::ptrdiff_t& startingPositionIndex,
const std::ptrdiff_t& maxNumberOfCirculations)const
{
return circular_const_reverse_iterator(this,startingPositionIndex,maxNumberOfCirculations);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// "circ_at" functions
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const blIntegerType& dataIndex)
{
return this->at( this->circ_index(dataIndex,this->size()) );
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline const blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const blIntegerType& dataIndex)const
{
return this->at( this->circ_index(dataIndex,this->size()) );
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const blIntegerType &rowIndex,
const blIntegerType &colIndex)
{
return this->at( this->circ_index(rowIndex,this->rows()),
this->circ_index(colIndex,this->cols()) );
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline const blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const blIntegerType& rowIndex,
const blIntegerType& colIndex)const
{
return this->at( this->circ_index(rowIndex,this->rows()),
this->circ_index(colIndex,this->cols()) );
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const blIntegerType& rowIndex,
const blIntegerType& colIndex,
const blIntegerType& pageIndex)
{
return this->at( this->circ_index(rowIndex,this->rows()),
this->circ_index(colIndex,this->cols()),
this->circ_index(pageIndex,this->pages()) );
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline const blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const blIntegerType& rowIndex,
const blIntegerType& colIndex,
const blIntegerType& pageIndex)const
{
return this->at( this->circ_index(rowIndex,this->rows()),
this->circ_index(colIndex,this->cols()),
this->circ_index(pageIndex,this->pages()) );
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Generic versions of circ_at functions
//-------------------------------------------------------------------
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename...Indexes>
inline blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const Indexes&...dataIndexes)
{
return this->circ_at({dataIndexes...});
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename...Indexes>
inline const blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const Indexes&...dataIndexes)const
{
return this->circ_at({dataIndexes...});
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const std::initializer_list<blIntegerType>& dataIndexes)
{
std::size_t dataIndex = 0;
std::size_t i = 0;
std::size_t j = 0;
std::size_t partialIndex = 0;
for(const blIntegerType& currentDataIndex : dataIndexes)
{
partialIndex = circ_index(currentDataIndex,this->size(i));
for(j = 0; j < i; ++j)
{
partialIndex *= this->size(j);
}
dataIndex += partialIndex;
++i;
}
// We've calculated the requested
// index, so we return the data
// point at the index in the buffer
return this->data()[dataIndex];
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline const blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const std::initializer_list<blIntegerType>& dataIndexes)const
{
std::size_t dataIndex = 0;
std::size_t i = 0;
std::size_t j = 0;
std::size_t partialIndex = 0;
for(const blIntegerType& currentDataIndex : dataIndexes)
{
partialIndex = circ_index(currentDataIndex,this->size(i));
for(j = 0; j < i; ++j)
{
partialIndex *= this->size(j);
}
dataIndex += partialIndex;
++i;
}
// We've calculated the requested
// index, so we return the data
// point at the index in the buffer
return this->data()[dataIndex];
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const std::vector<blIntegerType>& dataIndexes)
{
std::size_t dataIndex = 0;
std::size_t i = 0;
std::size_t j = 0;
std::size_t partialIndex = 0;
for(const blIntegerType& currentDataIndex : dataIndexes)
{
partialIndex = circ_index(currentDataIndex,this->size(i));
for(j = 0; j < i; ++j)
{
partialIndex *= this->size(j);
}
dataIndex += partialIndex;
++i;
}
// We've calculated the requested
// index, so we return the data
// point at the index in the buffer
return this->data()[dataIndex];
}
template<typename blDataType,
typename blDataPtr,
typename blBufferPtr,
std::size_t blMaxNumOfDimensions>
template<typename blIntegerType>
inline const blDataType& blBuffer_3<blDataType,blDataPtr,blBufferPtr,blMaxNumOfDimensions>::circ_at(const std::vector<blIntegerType>& dataIndexes)const
{
std::size_t dataIndex = 0;
std::size_t i = 0;
std::size_t j = 0;
std::size_t partialIndex = 0;
for(const blIntegerType& currentDataIndex : dataIndexes)
{
partialIndex = circ_index(currentDataIndex,this->size(i));
for(j = 0; j < i; ++j)
{
partialIndex *= this->size(j);
}
dataIndex += partialIndex;
++i;
}
// We've calculated the requested
// index, so we return the data
// point at the index in the buffer
return this->data()[dataIndex];
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// End of namespace
}
//-------------------------------------------------------------------
#endif // BL_BUFFER_3_HPP