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