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| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | #ifndef BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP |
| 2 | #define BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP | |
| 3 | ||
| 4 | // MS compatible compilers support #pragma once | |
| 5 | #if defined(_MSC_VER) | |
| 6 | # pragma once | |
| 7 | #endif | |
| 8 | ||
| 9 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 | |
| 10 | // unescape.hpp | |
| 11 | ||
| 12 | // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . | |
| 13 | // Use, modification and distribution is subject to the Boost Software | |
| 14 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
| 15 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 16 | ||
| 17 | // See http://www.boost.org for updates, documentation, and revision history. | |
| 18 | ||
| 19 | #include <boost/assert.hpp> | |
| 20 | ||
| 21 | #include <boost/iterator/iterator_adaptor.hpp> | |
| 22 | #include <boost/pointee.hpp> | |
| 23 | ||
| 24 | namespace boost { | |
| 25 | namespace archive { | |
| 26 | namespace iterators { | |
| 27 | ||
| 28 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 | |
| 29 | // class used by text archives to translate char strings to wchar_t | |
| 30 | // strings of the currently selected locale | |
| 31 | template<class Derived, class Base> | |
| 32 | class unescape | |
| 33 | : public boost::iterator_adaptor< | |
| 34 | unescape<Derived, Base>, | |
| 35 | Base, | |
| 36 | typename pointee<Base>::type, | |
| 37 | single_pass_traversal_tag, | |
| 38 | typename pointee<Base>::type | |
| 39 | > | |
| 40 | { | |
| 41 | friend class boost::iterator_core_access; | |
| 42 | typedef typename boost::iterator_adaptor< | |
| 43 | unescape<Derived, Base>, | |
| 44 | Base, | |
| 45 | typename pointee<Base>::type, | |
| 46 | single_pass_traversal_tag, | |
| 47 | typename pointee<Base>::type | |
| 48 | > super_t; | |
| 49 | ||
| 50 | typedef unescape<Derived, Base> this_t; | |
| 51 | public: | |
| 52 | typedef typename this_t::value_type value_type; | |
| 53 | typedef typename this_t::reference reference; | |
| 54 | private: | |
| 55 | value_type dereference_impl() { | |
| 56 | if(! m_full){ | |
| 57 | m_current_value = static_cast<Derived *>(this)->drain(); | |
| 58 | m_full = true; | |
| 59 | } | |
| 60 | return m_current_value; | |
| 61 | } | |
| 62 | ||
| 63 | reference dereference() const { | |
| 64 | return const_cast<this_t *>(this)->dereference_impl(); | |
| 65 | } | |
| 66 | ||
| 67 | value_type m_current_value; | |
| 68 | bool m_full; | |
| 69 | ||
| 70 | void increment(){ | |
| 71 | ++(this->base_reference()); | |
| 72 | dereference_impl(); | |
| 73 | m_full = false; | |
| 74 | }; | |
| 75 | ||
| 76 | public: | |
| 77 | ||
| 78 | unescape(Base base) : | |
| 79 | super_t(base), | |
| 80 | m_full(false) | |
| 81 | {} | |
| 82 | ||
| 83 | }; | |
| 84 | ||
| 85 | } // namespace iterators | |
| 86 | } // namespace archive | |
| 87 | } // namespace boost | |
| 88 | ||
| 89 | #endif // BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP |