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109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_NET_BASICS_BUFFERTYPE_H_INCLUDED
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#define BEAST_NET_BASICS_BUFFERTYPE_H_INCLUDED
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#include "../mpl/IfCond.h"
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namespace beast {
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/** General linear memory buffer.
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This wraps the underlying buffer type and provides additional methods
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to create a uniform interface. Specializations allow asio-compatible
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buffers without having to include boost/asio.h.
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*/
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/** @{ */
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template <bool IsConst>
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class BufferType
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{
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private:
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typedef typename mpl::IfCond <IsConst,
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void const*,
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void*>::type pointer_type;
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typedef typename mpl::IfCond <IsConst,
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uint8 const,
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uint8>::type byte_type;
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public:
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typedef std::size_t size_type;
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BufferType ()
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: m_data (nullptr)
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, m_size (0)
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{
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}
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template <bool OtherIsConst>
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BufferType (BufferType <OtherIsConst> const& other)
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: m_data (other.template cast <pointer_type> ())
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, m_size (other.size ())
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{
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}
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BufferType (pointer_type data, std::size_t size) noexcept
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: m_data (data)
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, m_size (size)
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{
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}
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BufferType& operator= (BufferType const& other) noexcept
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{
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m_data = other.cast <pointer_type> ();
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m_size = other.size ();
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return *this;
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}
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template <bool OtherIsConst>
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BufferType& operator= (
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BufferType <OtherIsConst> const& other) noexcept
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{
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m_data = other.template cast <pointer_type> ();
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m_size = other.size ();
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return *this;
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}
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template <typename T>
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T cast () const noexcept
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{
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return static_cast <T> (m_data);
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}
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size_type size () const
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{
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return m_size;
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}
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BufferType operator+ (size_type n) const noexcept
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{
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return BufferType (cast <byte_type*> (),
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size () - std::min (size(), n));
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}
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private:
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pointer_type m_data;
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std::size_t m_size;
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};
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/** @} */
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}
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#endif
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