1 files changed, 85 insertions, 0 deletions

diff --git a/MoonParser/pegtl/internal/integer_sequence.hpp b/MoonParser/pegtl/internal/integer_sequence.hpp
new file mode 100644
index 0000000..cdcf20d
--- /dev/null
+++ b/MoonParser/pegtl/internal/integer_sequence.hpp
@@ -0,0 +1,85 @@
+// Copyright (c) 2017 Dr. Colin Hirsch and Daniel Frey
+// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
+
+#ifndef TAOCPP_PEGTL_INCLUDE_INTERNAL_INTEGER_SEQUENCE_HPP
+#define TAOCPP_PEGTL_INCLUDE_INTERNAL_INTEGER_SEQUENCE_HPP
+
+#include <cstddef>
+#include <type_traits>
+#include <utility>
+
+namespace tao
+{
+   namespace TAOCPP_PEGTL_NAMESPACE
+   {
+      namespace internal
+      {
+         template< typename T, T... Ns >
+         struct integer_sequence
+         {
+            using value_type = T;
+
+            static constexpr std::size_t size() noexcept
+            {
+               return sizeof...( Ns );
+            }
+         };
+
+         template< std::size_t... Ns >
+         using index_sequence = integer_sequence< std::size_t, Ns... >;
+
+         template< typename, std::size_t, bool >
+         struct double_up;
+
+         template< typename T, T... Ns, std::size_t N >
+         struct double_up< integer_sequence< T, Ns... >, N, false >
+         {
+            using type = integer_sequence< T, Ns..., ( N + Ns )... >;
+         };
+
+         template< typename T, T... Ns, std::size_t N >
+         struct double_up< integer_sequence< T, Ns... >, N, true >
+         {
+            using type = integer_sequence< T, Ns..., ( N + Ns )..., 2 * N >;
+         };
+
+         template< typename T, T N, typename = void >
+         struct generate_sequence;
+
+         template< typename T, T N >
+         using generate_sequence_t = typename generate_sequence< T, N >::type;
+
+         template< typename T, T N, typename >
+         struct generate_sequence
+            : double_up< generate_sequence_t< T, N / 2 >, N / 2, N % 2 == 1 >
+         {
+         };
+
+         template< typename T, T N >
+         struct generate_sequence< T, N, typename std::enable_if< ( N == 0 ) >::type >
+         {
+            using type = integer_sequence< T >;
+         };
+
+         template< typename T, T N >
+         struct generate_sequence< T, N, typename std::enable_if< ( N == 1 ) >::type >
+         {
+            using type = integer_sequence< T, 0 >;
+         };
+
+         template< typename T, T N >
+         using make_integer_sequence = generate_sequence_t< T, N >;
+
+         template< std::size_t N >
+         using make_index_sequence = make_integer_sequence< std::size_t, N >;
+
+         template< typename... Ts >
+         using index_sequence_for = make_index_sequence< sizeof...( Ts ) >;
+
+      }  // namespace internal
+
+   }  // namespace TAOCPP_PEGTL_NAMESPACE
+
+}  // namespace tao
+
+#endif