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-rw-r--r--boost/metaparse/v1/cpp11/impl/remove_trailing_no_chars.hpp55
1 files changed, 55 insertions, 0 deletions
diff --git a/boost/metaparse/v1/cpp11/impl/remove_trailing_no_chars.hpp b/boost/metaparse/v1/cpp11/impl/remove_trailing_no_chars.hpp
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+++ b/boost/metaparse/v1/cpp11/impl/remove_trailing_no_chars.hpp
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+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_REMOVE_TRAILING_NO_CHARS_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_REMOVE_TRAILING_NO_CHARS_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu) 2013.
+// Distributed under 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)
+
+#include <boost/metaparse/v1/cpp11/string.hpp>
+#include <boost/metaparse/v1/impl/no_char.hpp>
+#include <boost/metaparse/v1/cpp11/impl/push_front_c.hpp>
+
+namespace boost
+{
+ namespace metaparse
+ {
+ namespace v1
+ {
+ namespace impl
+ {
+ template <class S>
+ struct remove_trailing_no_chars : S {};
+
+ // this code assumes that BOOST_NO_CHARs are at the end of the string
+ template <char... Cs>
+ struct remove_trailing_no_chars<string<BOOST_NO_CHAR, Cs...>> :
+ string<>
+ {};
+
+ template <char C, char... Cs>
+ struct remove_trailing_no_chars<string<C, Cs...>> :
+ push_front_c<typename remove_trailing_no_chars<string<Cs...>>::type,C>
+ {};
+
+#ifdef _MSC_VER
+ /*
+ * These specialisations are needed to avoid an internal compiler error
+ * in Visual C++ 12
+ */
+ template <char C>
+ struct remove_trailing_no_chars<string<C>> : string<C> {};
+
+ template <>
+ struct remove_trailing_no_chars<string<BOOST_NO_CHAR>> : string<> {};
+
+ template <>
+ struct remove_trailing_no_chars<string<>> : string<> {};
+#endif
+ }
+ }
+ }
+}
+
+#endif
+