source: XMLIO_V2/external/src/POCO/Foundation.save/Poco/Buffer.h @ 80

//
// Buffer.h
//
// $Id: //poco/1.3/Foundation/include/Poco/Buffer.h#3 $
//
// Library: Foundation
// Package: Core
// Module:  Buffer
//
// Definition of the Buffer class.
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#ifndef Foundation_Buffer_INCLUDED
#define Foundation_Buffer_INCLUDED


#include "Poco/Foundation.h"
#include <cstddef>


namespace Poco {


template <class T>
class Buffer
        /// A very simple buffer class that allocates a buffer of
        /// a given type and size in the constructor and
        /// deallocates the buffer in the destructor.
        ///
        /// This class is useful everywhere where a temporary buffer
        /// is needed.
{
public:
        Buffer(std::size_t size):
                _size(size),
                _ptr(new T[size])
                /// Creates and allocates the Buffer.
        {
        }
        
        ~Buffer()
                /// Destroys the Buffer.
        {
                delete [] _ptr;
        }
        
        std::size_t size() const
                /// Returns the size of the buffer.
        {
                return _size;
        }
        
        T* begin()
                /// Returns a pointer to the beginning of the buffer.
        {
                return _ptr;
        }
        
        const T* begin() const
                /// Returns a pointer to the beginning of the buffer.
        {
                return _ptr;
        }

        T* end()
                /// Returns a pointer to end of the buffer.
        {
                return _ptr + _size;
        }
        
        const T* end() const
                /// Returns a pointer to the end of the buffer.
        {
                return _ptr + _size;
        }
        
        T& operator [] (std::size_t index)
        {
                poco_assert (index < _size);
                
                return _ptr[index];
        }

        const T& operator [] (std::size_t index) const
        {
                poco_assert (index < _size);
                
                return _ptr[index];
        }

private:
        Buffer();
        Buffer(const Buffer&);
        Buffer& operator = (const Buffer&);

        std::size_t _size;
        T* _ptr;
};


} // namespace Poco


#endif // Foundation_Buffer_INCLUDED