// Boost string_algo library find_iterator.hpp header file ---------------------------//
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// Copyright Pavol Droba 2002-2003.
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (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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// See http://www.boost.org/ for updates, documentation, and revision history.
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#ifndef BOOST_STRING_FIND_ITERATOR_DETAIL_HPP
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#define BOOST_STRING_FIND_ITERATOR_DETAIL_HPP
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#include <boost/algorithm/string/config.hpp>
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#include <boost/range/iterator_range_core.hpp>
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#include <boost/iterator/iterator_facade.hpp>
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#include <boost/iterator/iterator_categories.hpp>
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#include <boost/function.hpp>
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namespace boost {
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namespace algorithm {
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namespace detail {
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// find_iterator base -----------------------------------------------//
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// Find iterator base
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template<typename IteratorT>
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class find_iterator_base
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{
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protected:
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// typedefs
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typedef IteratorT input_iterator_type;
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typedef iterator_range<IteratorT> match_type;
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typedef function2<
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match_type,
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input_iterator_type,
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input_iterator_type> finder_type;
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protected:
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// Protected construction/destruction
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// Default constructor
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find_iterator_base() {}
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// Copy construction
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find_iterator_base( const find_iterator_base& Other ) :
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m_Finder(Other.m_Finder) {}
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// Constructor
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template<typename FinderT>
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find_iterator_base( FinderT Finder, int ) :
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m_Finder(Finder) {}
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// Destructor
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~find_iterator_base() {}
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// Find operation
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match_type do_find(
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input_iterator_type Begin,
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input_iterator_type End ) const
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{
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if (!m_Finder.empty())
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{
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return m_Finder(Begin,End);
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}
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else
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{
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return match_type(End,End);
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}
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}
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// Check
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bool is_null() const
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{
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return m_Finder.empty();
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}
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private:
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// Finder
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finder_type m_Finder;
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};
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} // namespace detail
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} // namespace algorithm
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} // namespace boost
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#endif // BOOST_STRING_FIND_ITERATOR_DETAIL_HPP
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