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137 lines
4.6 KiB
137 lines
4.6 KiB
// Boost.Range library |
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// |
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// Copyright Thorsten Ottosen, Neil Groves 2006. Use, modification and |
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// distribution is subject to the Boost Software License, Version |
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// |
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// For more information, see http://www.boost.org/libs/range/ |
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// |
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#ifndef BOOST_RANGE_ADAPTOR_TOKENIZED_HPP |
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#define BOOST_RANGE_ADAPTOR_TOKENIZED_HPP |
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#include <boost/regex.hpp> |
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#include <boost/range/iterator_range.hpp> |
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namespace boost |
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{ |
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namespace range_detail |
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{ |
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template< class R > |
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struct tokenized_range : |
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public boost::iterator_range< |
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boost::regex_token_iterator< |
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BOOST_DEDUCED_TYPENAME range_iterator<R>::type |
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> |
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> |
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{ |
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private: |
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typedef |
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boost::regex_token_iterator< |
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BOOST_DEDUCED_TYPENAME range_iterator<R>::type |
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> |
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regex_iter; |
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typedef BOOST_DEDUCED_TYPENAME regex_iter::regex_type |
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regex_type; |
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typedef boost::iterator_range<regex_iter> |
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base; |
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public: |
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template< class Regex, class Submatch, class Flag > |
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tokenized_range( R& r, const Regex& re, const Submatch& sub, Flag f ) |
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: base( regex_iter( boost::begin(r), boost::end(r), |
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regex_type(re), sub, f ), |
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regex_iter() ) |
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{ } |
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}; |
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template< class T, class U, class V > |
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struct regex_holder |
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{ |
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const T& re; |
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const U& sub; |
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V f; |
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regex_holder( const T& rex, const U& subm, V flag ) : |
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re(rex), sub(subm), f(flag) |
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{ } |
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private: |
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// Not assignable |
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void operator=(const regex_holder&); |
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}; |
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struct regex_forwarder |
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{ |
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template< class Regex > |
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regex_holder<Regex,int,regex_constants::match_flag_type> |
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operator()( const Regex& re, |
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int submatch = 0, |
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regex_constants::match_flag_type f = |
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regex_constants::match_default ) const |
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{ |
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return regex_holder<Regex,int, |
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regex_constants::match_flag_type>( re, submatch, f ); |
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} |
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template< class Regex, class Submatch > |
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regex_holder<Regex,Submatch,regex_constants::match_flag_type> |
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operator()( const Regex& re, |
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const Submatch& sub, |
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regex_constants::match_flag_type f = |
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regex_constants::match_default ) const |
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{ |
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return regex_holder<Regex,Submatch, |
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regex_constants::match_flag_type>( re, sub, f ); |
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} |
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}; |
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template< class BidirectionalRng, class R, class S, class F > |
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inline tokenized_range<BidirectionalRng> |
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operator|( BidirectionalRng& r, |
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const regex_holder<R,S,F>& f ) |
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{ |
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return tokenized_range<BidirectionalRng>( r, f.re, f.sub, f.f ); |
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} |
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template< class BidirectionalRng, class R, class S, class F > |
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inline tokenized_range<const BidirectionalRng> |
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operator|( const BidirectionalRng& r, |
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const regex_holder<R,S,F>& f ) |
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{ |
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return tokenized_range<const BidirectionalRng>( r, f.re, f.sub, f.f ); |
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} |
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} // 'range_detail' |
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using range_detail::tokenized_range; |
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namespace adaptors |
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{ |
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namespace |
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{ |
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const range_detail::regex_forwarder tokenized = |
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range_detail::regex_forwarder(); |
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} |
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template<class BidirectionalRange, class Regex, class Submatch, class Flag> |
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inline tokenized_range<BidirectionalRange> |
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tokenize(BidirectionalRange& rng, const Regex& reg, const Submatch& sub, Flag f) |
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{ |
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return tokenized_range<BidirectionalRange>(rng, reg, sub, f); |
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} |
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template<class BidirectionalRange, class Regex, class Submatch, class Flag> |
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inline tokenized_range<const BidirectionalRange> |
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tokenize(const BidirectionalRange& rng, const Regex& reg, const Submatch& sub, Flag f) |
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{ |
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return tokenized_range<const BidirectionalRange>(rng, reg, sub, f); |
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} |
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} // 'adaptors' |
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} |
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#endif
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