#ifndef BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP
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#define BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// unescape.hpp
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 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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// See http://www.boost.org for updates, documentation, and revision history.
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#include <boost/assert.hpp>
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#include <boost/iterator/iterator_adaptor.hpp>
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#include <boost/pointee.hpp>
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namespace boost {
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namespace archive {
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namespace iterators {
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// class used by text archives to translate char strings to wchar_t
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// strings of the currently selected locale
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template<class Derived, class Base>
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class unescape
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: public boost::iterator_adaptor<
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unescape<Derived, Base>,
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Base,
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typename pointee<Base>::type,
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single_pass_traversal_tag,
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typename pointee<Base>::type
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>
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{
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friend class boost::iterator_core_access;
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typedef typename boost::iterator_adaptor<
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unescape<Derived, Base>,
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Base,
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typename pointee<Base>::type,
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single_pass_traversal_tag,
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typename pointee<Base>::type
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> super_t;
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typedef unescape<Derived, Base> this_t;
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public:
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typedef typename this_t::value_type value_type;
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typedef typename this_t::reference reference;
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private:
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value_type dereference_impl() {
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if(! m_full){
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m_current_value = static_cast<Derived *>(this)->drain();
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m_full = true;
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}
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return m_current_value;
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}
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reference dereference() const {
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return const_cast<this_t *>(this)->dereference_impl();
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}
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value_type m_current_value;
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bool m_full;
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void increment(){
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++(this->base_reference());
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dereference_impl();
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m_full = false;
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}
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public:
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unescape(Base base) :
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super_t(base),
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m_full(false)
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{}
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};
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} // namespace iterators
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} // namespace archive
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} // namespace boost
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#endif // BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP
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