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author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/algorithm/string/detail/sequence.hpp | |
download | swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 |
Import.
Diffstat (limited to '3rdParty/Boost/boost/algorithm/string/detail/sequence.hpp')
-rw-r--r-- | 3rdParty/Boost/boost/algorithm/string/detail/sequence.hpp | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/algorithm/string/detail/sequence.hpp b/3rdParty/Boost/boost/algorithm/string/detail/sequence.hpp new file mode 100644 index 0000000..de01350 --- /dev/null +++ b/3rdParty/Boost/boost/algorithm/string/detail/sequence.hpp @@ -0,0 +1,200 @@ +// Boost string_algo library sequence.hpp header file ---------------------------// + +// Copyright Pavol Droba 2002-2003. +// +// 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) + +// See http://www.boost.org/ for updates, documentation, and revision history. + +#ifndef BOOST_STRING_DETAIL_SEQUENCE_HPP +#define BOOST_STRING_DETAIL_SEQUENCE_HPP + +#include <boost/algorithm/string/config.hpp> +#include <boost/mpl/bool.hpp> +#include <boost/mpl/logical.hpp> +#include <boost/range/begin.hpp> +#include <boost/range/end.hpp> + +#include <boost/algorithm/string/sequence_traits.hpp> + +namespace boost { + namespace algorithm { + namespace detail { + +// insert helpers -------------------------------------------------// + + template< typename InputT, typename ForwardIteratorT > + inline void insert( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator At, + ForwardIteratorT Begin, + ForwardIteratorT End ) + { + Input.insert( At, Begin, End ); + } + + template< typename InputT, typename InsertT > + inline void insert( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator At, + const InsertT& Insert ) + { + insert( Input, At, ::boost::begin(Insert), ::boost::end(Insert) ); + } + +// erase helper ---------------------------------------------------// + + // Erase a range in the sequence + /* + Returns the iterator pointing just after the erase subrange + */ + template< typename InputT > + inline typename InputT::iterator erase( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator From, + BOOST_STRING_TYPENAME InputT::iterator To ) + { + return Input.erase( From, To ); + } + +// replace helper implementation ----------------------------------// + + // Optimized version of replace for generic sequence containers + // Assumption: insert and erase are expensive + template< bool HasConstTimeOperations > + struct replace_const_time_helper + { + template< typename InputT, typename ForwardIteratorT > + void operator()( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator From, + BOOST_STRING_TYPENAME InputT::iterator To, + ForwardIteratorT Begin, + ForwardIteratorT End ) + { + // Copy data to the container ( as much as possible ) + ForwardIteratorT InsertIt=Begin; + BOOST_STRING_TYPENAME InputT::iterator InputIt=From; + for(; InsertIt!=End && InputIt!=To; InsertIt++, InputIt++ ) + { + *InputIt=*InsertIt; + } + + if ( InsertIt!=End ) + { + // Replace sequence is longer, insert it + Input.insert( InputIt, InsertIt, End ); + } + else + { + if ( InputIt!=To ) + { + // Replace sequence is shorter, erase the rest + Input.erase( InputIt, To ); + } + } + } + }; + + template<> + struct replace_const_time_helper< true > + { + // Const-time erase and insert methods -> use them + template< typename InputT, typename ForwardIteratorT > + void operator()( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator From, + BOOST_STRING_TYPENAME InputT::iterator To, + ForwardIteratorT Begin, + ForwardIteratorT End ) + { + BOOST_STRING_TYPENAME InputT::iterator At=Input.erase( From, To ); + if ( Begin!=End ) + { + if(!Input.empty()) + { + Input.insert( At, Begin, End ); + } + else + { + Input.insert( Input.begin(), Begin, End ); + } + } + } + }; + + // No native replace method + template< bool HasNative > + struct replace_native_helper + { + template< typename InputT, typename ForwardIteratorT > + void operator()( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator From, + BOOST_STRING_TYPENAME InputT::iterator To, + ForwardIteratorT Begin, + ForwardIteratorT End ) + { + replace_const_time_helper< + boost::mpl::and_< + has_const_time_insert<InputT>, + has_const_time_erase<InputT> >::value >()( + Input, From, To, Begin, End ); + } + }; + + // Container has native replace method + template<> + struct replace_native_helper< true > + { + template< typename InputT, typename ForwardIteratorT > + void operator()( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator From, + BOOST_STRING_TYPENAME InputT::iterator To, + ForwardIteratorT Begin, + ForwardIteratorT End ) + { + Input.replace( From, To, Begin, End ); + } + }; + +// replace helper -------------------------------------------------// + + template< typename InputT, typename ForwardIteratorT > + inline void replace( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator From, + BOOST_STRING_TYPENAME InputT::iterator To, + ForwardIteratorT Begin, + ForwardIteratorT End ) + { + replace_native_helper< has_native_replace<InputT>::value >()( + Input, From, To, Begin, End ); + } + + template< typename InputT, typename InsertT > + inline void replace( + InputT& Input, + BOOST_STRING_TYPENAME InputT::iterator From, + BOOST_STRING_TYPENAME InputT::iterator To, + const InsertT& Insert ) + { + if(From!=To) + { + replace( Input, From, To, ::boost::begin(Insert), ::boost::end(Insert) ); + } + else + { + insert( Input, From, ::boost::begin(Insert), ::boost::end(Insert) ); + } + } + + } // namespace detail + } // namespace algorithm +} // namespace boost + + +#endif // BOOST_STRING_DETAIL_SEQUENCE_HPP |