1 #ifndef BOOST_METAPARSE_V1_CPP11_IMPL_POP_BACK_HPP 2 #define BOOST_METAPARSE_V1_CPP11_IMPL_POP_BACK_HPP 3 4 // Copyright Abel Sinkovics (abel@sinkovics.hu) 2013. 5 // Distributed under the Boost Software License, Version 1.0. 6 // (See accompanying file LICENSE_1_0.txt or copy at 7 // http://www.boost.org/LICENSE_1_0.txt) 8 9 #include <boost/metaparse/v1/cpp11/fwd/string.hpp> 10 #include <boost/metaparse/v1/cpp11/impl/push_front_c.hpp> 11 #include <boost/metaparse/v1/cpp11/impl/size.hpp> 12 13 #include <boost/mpl/clear.hpp> 14 15 namespace boost 16 { 17 namespace metaparse 18 { 19 namespace v1 20 { 21 namespace impl 22 { 23 template <class S> 24 struct pop_back; 25 26 template <char C> 27 struct pop_back<string<C>> : boost::mpl::clear<string<C>> {}; 28 29 template <char C, char... Cs> 30 struct pop_back<string<C, Cs...>> : 31 push_front_c<typename pop_back<string<Cs...>>::type, C> 32 {}; 33 } 34 } 35 } 36 } 37 38 #endif 39 40