add boost on mac

macx64/include/boost/metaparse/v1/cpp11/first_of.hpp

@@ -0,0 +1,36 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_FIRST_OF_HPP
+#define BOOST_METAPARSE_V1_CPP11_FIRST_OF_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2017.
+// 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/impl/nth_of_c.hpp>
+
+#include <boost/metaparse/v1/fail.hpp>
+#include <boost/metaparse/v1/error/index_out_of_range.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      template <class... Ps>
+      struct first_of
+      {
+        typedef first_of type;
+
+        template <class S, class Pos>
+        struct apply : impl::nth_of_c<0, S, Pos, Ps...> {};
+      };
+
+      template <>
+      struct first_of<> : fail<error::index_out_of_range<0, -1, 0>> {};
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/fwd/string.hpp

@@ -0,0 +1,22 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_FWD_STRING_HPP
+#define BOOST_METAPARSE_V1_CPP11_FWD_STRING_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)
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      template <char... Cs>
+      struct string;
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/at_c.hpp

@@ -0,0 +1,35 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_AT_C_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_AT_C_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/fwd/string.hpp>
+
+#include <boost/mpl/char.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class S, int N>
+        struct at_c;
+
+        template <char C, char... Cs, int N>
+        struct at_c<string<C, Cs...>, N> : at_c<string<Cs...>, N - 1> {};
+
+        template <char C, char... Cs>
+        struct at_c<string<C, Cs...>, 0> : boost::mpl::char_<C> {};
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/concat.hpp

@@ -0,0 +1,30 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_CONCAT_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_CONCAT_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/fwd/string.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class A, class B>
+        struct concat;
+
+        template <char... As, char... Bs>
+        struct concat<string<As...>, string<Bs...>> : string<As..., Bs...> {};
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/empty_string.hpp

@@ -0,0 +1,33 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_EMPTY_STRING_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_EMPTY_STRING_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)
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class Ignore = int>
+        struct empty_string
+        {
+          typedef empty_string type;
+
+          static constexpr char value[1] = {0};
+        };
+
+        template <class Ignore>
+        constexpr char empty_string<Ignore>::value[1];
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/nth_of_c.hpp

@@ -0,0 +1,82 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_NTH_OF_C_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_NTH_OF_C_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2017.
+// 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/impl/nth_of_c_skip_remaining.hpp>
+
+#include <boost/metaparse/v1/is_error.hpp>
+#include <boost/metaparse/v1/get_remaining.hpp>
+#include <boost/metaparse/v1/get_position.hpp>
+#include <boost/metaparse/v1/get_result.hpp>
+
+#include <type_traits>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <int N, class S, class Pos, class... Ps>
+        struct nth_of_c;
+
+        template <int N, class S, class Pos, class P, class... Ps>
+        struct nth_of_c<N, S, Pos, P, Ps...>
+        {
+        private:
+          template <class NextResult>
+          struct apply_unchecked :
+            nth_of_c<
+              N - 1,
+              typename get_remaining<NextResult>::type,
+              typename get_position<NextResult>::type,
+              Ps...
+            >
+          {};
+
+        public:
+          typedef
+            typename std::conditional<
+              is_error<typename P::template apply<S, Pos>>::type::value,
+              typename P::template apply<S, Pos>,
+              apply_unchecked<typename P::template apply<S, Pos>>
+            >::type::type
+            type;
+        };
+
+        template <class P, class S, class Pos, class... Ps>
+        struct nth_of_c<0, S, Pos, P, Ps...>
+        {
+        private:
+          template <class NextResult>
+          struct apply_unchecked :
+            nth_of_c_skip_remaining<
+              typename get_result<NextResult>::type,
+              typename get_remaining<NextResult>::type,
+              typename get_position<NextResult>::type,
+              Ps...
+            >
+          {};
+
+        public:
+          typedef
+            typename std::conditional<
+              is_error<typename P::template apply<S, Pos>>::type::value,
+              typename P::template apply<S, Pos>,
+              apply_unchecked<typename P::template apply<S, Pos>>
+            >::type::type
+            type;
+        };
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/nth_of_c_skip_remaining.hpp

@@ -0,0 +1,60 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_NTH_OF_C_SKIP_REMANING_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_NTH_OF_C_SKIP_REMANING_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2017.
+// 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/is_error.hpp>
+#include <boost/metaparse/v1/get_remaining.hpp>
+#include <boost/metaparse/v1/get_position.hpp>
+#include <boost/metaparse/v1/return_.hpp>
+
+#include <type_traits>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class FinalResult, class S, class Pos, class... Ps>
+        struct nth_of_c_skip_remaining;
+
+        template <class FinalResult, class S, class Pos>
+        struct nth_of_c_skip_remaining<FinalResult, S, Pos> :
+          return_<FinalResult>::template apply<S, Pos>
+        {};
+
+        template <class FinalResult, class S, class Pos, class P, class... Ps>
+        struct nth_of_c_skip_remaining<FinalResult, S, Pos, P, Ps...>
+        {
+        private:
+          template <class NextResult>
+          struct apply_unchecked :
+            nth_of_c_skip_remaining<
+              FinalResult,
+              typename get_remaining<NextResult>::type,
+              typename get_position<NextResult>::type,
+              Ps...
+            >
+          {};
+        public:
+          typedef
+            typename std::conditional<
+              is_error<typename P::template apply<S, Pos>>::type::value,
+              typename P::template apply<S, Pos>,
+              apply_unchecked<typename P::template apply<S, Pos>>
+            >::type::type
+            type;
+        };
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/pop_back.hpp

@@ -0,0 +1,39 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_POP_BACK_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_POP_BACK_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/fwd/string.hpp>
+#include <boost/metaparse/v1/cpp11/impl/push_front_c.hpp>
+#include <boost/metaparse/v1/cpp11/impl/size.hpp>
+
+#include <boost/mpl/clear.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class S>
+        struct pop_back;
+
+        template <char C>
+        struct pop_back<string<C>> : boost::mpl::clear<string<C>> {};
+
+        template <char C, char... Cs>
+        struct pop_back<string<C, Cs...>> :
+          push_front_c<typename pop_back<string<Cs...>>::type, C>
+        {};
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/pop_front.hpp

@@ -0,0 +1,30 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_POP_FRONT_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_POP_FRONT_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/fwd/string.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class S>
+        struct pop_front;
+
+        template <char C, char... Cs>
+        struct pop_front<string<C, Cs...>> : string<Cs...> {};
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/push_back_c.hpp

@@ -0,0 +1,30 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_PUSH_BACK_C_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_PUSH_BACK_C_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/fwd/string.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class S, char C>
+        struct push_back_c;
+
+        template <char... Cs, char C>
+        struct push_back_c<string<Cs...>, C> : string<Cs..., C> {};
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/push_front_c.hpp

@@ -0,0 +1,30 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_PUSH_FRONT_C_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_PUSH_FRONT_C_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/fwd/string.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class S, char C>
+        struct push_front_c;
+
+        template <char... Cs, char C>
+        struct push_front_c<string<Cs...>, C> : string<C, Cs...> {};
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/remove_trailing_no_chars.hpp

@@ -0,0 +1,55 @@
+#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
+

macx64/include/boost/metaparse/v1/cpp11/impl/size.hpp

@@ -0,0 +1,34 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_SIZE_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_SIZE_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/fwd/string.hpp>
+
+#include <boost/mpl/int.hpp>
+
+#include <type_traits>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <class S>
+        struct size;
+
+        template <char... Cs>
+        struct size<string<Cs...>> : boost::mpl::int_<sizeof...(Cs)> {};
+      }
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/impl/string_at.hpp

@@ -0,0 +1,41 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_IMPL_STRING_AT_HPP
+#define BOOST_METAPARSE_V1_CPP11_IMPL_STRING_AT_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2016.
+// 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/impl/no_char.hpp>
+
+#include <boost/metaparse/limit_string_size.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      namespace impl
+      {
+        template <int MaxLen, int Len, class T>
+        constexpr int string_at(const T (&s)[Len], int n)
+        {
+          // "MaxLen + 1" adds the \0 character of the string literal to the
+          // limit
+          static_assert(Len <= MaxLen + 1, "String literal is too long.");
+          return n >= Len - 1 ? BOOST_NO_CHAR : s[n];
+        }
+      }
+    }
+  }
+}
+
+#ifdef BOOST_METAPARSE_V1_STRING_AT
+#  error BOOST_METAPARSE_V1_STRING_AT already defined
+#endif
+#define BOOST_METAPARSE_V1_STRING_AT \
+  ::boost::metaparse::v1::impl::string_at<BOOST_METAPARSE_LIMIT_STRING_SIZE>
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/last_of.hpp

@@ -0,0 +1,36 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_LAST_OF_HPP
+#define BOOST_METAPARSE_V1_CPP11_LAST_OF_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2017.
+// 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/impl/nth_of_c.hpp>
+
+#include <boost/metaparse/v1/fail.hpp>
+#include <boost/metaparse/v1/error/index_out_of_range.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      template <class... Ps>
+      struct last_of
+      {
+        typedef last_of type;
+
+        template <class S, class Pos>
+        struct apply : impl::nth_of_c<sizeof...(Ps) - 1, S, Pos, Ps...> {};
+      };
+
+      template <>
+      struct last_of<> : fail<error::index_out_of_range<0, -1, 0>> {};
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/nth_of.hpp

@@ -0,0 +1,24 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_NTH_OF_HPP
+#define BOOST_METAPARSE_V1_CPP11_NTH_OF_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2017.
+// 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/nth_of_c.hpp>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      template <class K, class... Ps>
+      struct nth_of : nth_of_c<K::type::value, Ps...> {};
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/nth_of_c.hpp

@@ -0,0 +1,45 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_NTH_OF_C_HPP
+#define BOOST_METAPARSE_V1_CPP11_NTH_OF_C_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2017.
+// 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/impl/nth_of_c.hpp>
+
+#include <boost/metaparse/v1/fail.hpp>
+#include <boost/metaparse/v1/error/index_out_of_range.hpp>
+
+#include <type_traits>
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      template <int N, class... Ps>
+      struct nth_of_c
+      {
+        typedef nth_of_c type;
+
+        template <class S, class Pos>
+        struct apply :
+          std::conditional<
+            (0 <= N && N < sizeof...(Ps)),
+            impl::nth_of_c<N, S, Pos, Ps...>,
+            typename fail<error::index_out_of_range<0, sizeof...(Ps) - 1, N>>
+              ::template apply<S, Pos>
+          >::type
+        {};
+      };
+
+      template <int N>
+      struct nth_of_c<N> : fail<error::index_out_of_range<0, -1, N>> {};
+    }
+  }
+}
+
+#endif
+

macx64/include/boost/metaparse/v1/cpp11/string.hpp

@@ -0,0 +1,222 @@
+#ifndef BOOST_METAPARSE_V1_CPP11_STRING_HPP
+#define BOOST_METAPARSE_V1_CPP11_STRING_HPP
+
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2012.
+// 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/fwd/string.hpp>
+#include <boost/metaparse/v1/string_tag.hpp>
+#include <boost/metaparse/v1/impl/string_iterator.hpp>
+#include <boost/metaparse/v1/cpp11/impl/empty_string.hpp>
+#include <boost/metaparse/v1/cpp11/impl/size.hpp>
+#include <boost/metaparse/v1/cpp11/impl/pop_front.hpp>
+#include <boost/metaparse/v1/cpp11/impl/push_front_c.hpp>
+#include <boost/metaparse/v1/cpp11/impl/push_back_c.hpp>
+#include <boost/metaparse/v1/cpp11/impl/pop_back.hpp>
+#include <boost/metaparse/v1/cpp11/impl/string_at.hpp>
+
+#include <type_traits>
+
+/*
+ * The string type
+ */
+
+namespace boost
+{
+  namespace metaparse
+  {
+    namespace v1
+    {
+      template <char... Cs>
+      struct string
+      {
+        typedef string type;
+        typedef string_tag tag;
+      };
+    }
+  }
+}
+
+/*
+ * Boost.MPL overloads
+ */
+
+namespace boost
+{
+  namespace mpl
+  {
+    // push_back
+    template <class S>
+    struct push_back_impl;
+
+    template <>
+    struct push_back_impl<boost::metaparse::v1::string_tag>
+    {
+      typedef push_back_impl type;
+
+      template <class S, class C>
+      struct apply :
+        boost::metaparse::v1::impl::push_back_c<
+          typename S::type,
+          C::type::value
+        >
+      {};
+    };
+
+    // pop_back
+    template <class S>
+    struct pop_back_impl;
+
+    template <>
+    struct pop_back_impl<boost::metaparse::v1::string_tag>
+    {
+      typedef pop_back_impl type;
+
+      template <class S>
+      struct apply : boost::metaparse::v1::impl::pop_back<S> {};
+    };
+
+    // push_front
+    template <class S>
+    struct push_front_impl;
+
+    template <>
+    struct push_front_impl<boost::metaparse::v1::string_tag>
+    {
+      typedef push_front_impl type;
+
+      template <class S, class C>
+      struct apply :
+        boost::metaparse::v1::impl::push_front_c<
+          typename S::type,
+          C::type::value
+        >
+      {};
+    };
+
+    // pop_front
+    template <class S>
+    struct pop_front_impl;
+
+    template <>
+    struct pop_front_impl<boost::metaparse::v1::string_tag>
+    {
+      typedef pop_front_impl type;
+
+      template <class S>
+      struct apply : boost::metaparse::v1::impl::pop_front<S> {};
+    };
+
+    // clear
+    template <class S>
+    struct clear_impl;
+
+    template <>
+    struct clear_impl<boost::metaparse::v1::string_tag>
+    {
+      typedef clear_impl type;
+
+      template <class S>
+      struct apply : boost::metaparse::v1::string<> {};
+    };
+
+    // begin
+    template <class S>
+    struct begin_impl;
+
+    template <>
+    struct begin_impl<boost::metaparse::v1::string_tag>
+    {
+      typedef begin_impl type;
+
+      template <class S>
+      struct apply :
+        boost::metaparse::v1::impl::string_iterator<typename S::type, 0>
+      {};
+    };
+
+    // end
+    template <class S>
+    struct end_impl;
+
+    template <>
+    struct end_impl<boost::metaparse::v1::string_tag>
+    {
+      typedef end_impl type;
+
+      template <class S>
+      struct apply :
+        boost::metaparse::v1::impl::string_iterator<
+          typename S::type,
+          boost::metaparse::v1::impl::size<typename S::type>::type::value
+        >
+      {};
+    };
+
+    // equal_to
+    template <class A, class B>
+    struct equal_to_impl;
+
+    template <>
+    struct equal_to_impl<
+      boost::metaparse::v1::string_tag,
+      boost::metaparse::v1::string_tag
+    >
+    {
+      typedef equal_to_impl type;
+
+      template <class A, class B>
+      struct apply : std::is_same<typename A::type, typename B::type> {};
+    };
+
+    template <class T>
+    struct equal_to_impl<boost::metaparse::v1::string_tag, T>
+    {
+      typedef equal_to_impl type;
+      
+      template <class, class>
+      struct apply : false_ {};
+    };
+    
+    template <class T>
+    struct equal_to_impl<T, boost::metaparse::v1::string_tag> :
+      equal_to_impl<boost::metaparse::v1::string_tag, T>
+    {};
+
+    // c_str
+    template <class S>
+    struct c_str;
+
+    template <char... Cs>
+    struct c_str<boost::metaparse::v1::string<Cs...>>
+    {
+      typedef c_str type;
+      static constexpr char value[sizeof...(Cs) + 1] = {Cs..., 0};
+    };
+
+    template <>
+    struct c_str<boost::metaparse::v1::string<>> :
+      boost::metaparse::v1::impl::empty_string<>
+    {};
+
+    template <char... Cs>
+    constexpr char c_str<boost::metaparse::v1::string<Cs...>>::value[];
+  }
+}
+
+#include <boost/metaparse/v1/cpp11/impl/remove_trailing_no_chars.hpp>
+
+#if __clang__
+#  if __has_extension(cxx_string_literal_templates)
+#    define BOOST_METAPARSE_V1_STRING(...) ::boost::metaparse::string<__VA_ARGS__>
+#  else
+#    include <boost/metaparse/v1/cpp11/impl/string.hpp>
+#  endif
+#else
+#  include <boost/metaparse/v1/cpp11/impl/string.hpp>
+#endif
+
+#endif
+