X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=boost_ext%2Fboost%2Fbimap%2Ftags%2Fsupport%2Foverwrite_tagged.hpp;fp=boost_ext%2Fboost%2Fbimap%2Ftags%2Fsupport%2Foverwrite_tagged.hpp;h=55cd0fc8e4ab3909cfb46f69ae94311c2dc080f8;hb=4123b4fe58a7fd4659fa01476581690b47c83600;hp=0000000000000000000000000000000000000000;hpb=79564b90f6c9f7cd0bc5b11a6146bb7067b11a75;p=senf.git diff --git a/boost_ext/boost/bimap/tags/support/overwrite_tagged.hpp b/boost_ext/boost/bimap/tags/support/overwrite_tagged.hpp new file mode 100644 index 0000000..55cd0fc --- /dev/null +++ b/boost_ext/boost/bimap/tags/support/overwrite_tagged.hpp @@ -0,0 +1,73 @@ +// Boost.Bimap +// +// Copyright (c) 2006-2007 Matias Capeletto +// +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) + +/// \file tags/support/overwrite_tagged.hpp +/// \brief Hard tagging + +#ifndef BOOST_BIMAP_TAGS_SUPPORT_OVERWRITE_TAGGED_HPP +#define BOOST_BIMAP_TAGS_SUPPORT_OVERWRITE_TAGGED_HPP + +#if defined(_MSC_VER) && (_MSC_VER>=1200) +#pragma once +#endif + +#include + +#include + +/** \struct boost::bimaps::tags::support::overwrite_tagged +\brief Hard tagging metafunction + +\code +template< class Type, class Tag > +struct overwrite_tagged +{ + typedef {TaggedType} type; +}; +\endcode + +If the type is not tagged, this metafunction returns a tagged type with the +passed tag. If it is tagged it returns a new tagged type with the tag replaced +by the one passed as a parameter. + +See also tagged, default_tagged. + **/ + +#ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES + +namespace boost { +namespace bimaps { +namespace tags { +namespace support { + + +// Change the tag + +template< class Type, class NewTag > +struct overwrite_tagged +{ + typedef tagged type; +}; + +template< class Type, class OldTag, class NewTag > +struct overwrite_tagged< tagged< Type, OldTag >, NewTag > +{ + typedef tagged type; +}; + + +} // namespace support +} // namespace tags +} // namespace bimaps +} // namespace boost + +#endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES + +#endif // BOOST_BIMAP_TAGS_SUPPORT_OVERWRITE_TAGGED_HPP + +