From 66cea447368986fd7ffa9810295b3d44c510d2f0 Mon Sep 17 00:00:00 2001
From: bolero-MURAKAMI <bolero.murakami@gmail.com>
Date: Sat, 12 Jul 2014 21:37:49 +0900
Subject: [PATCH] add sprout::data() non-member function

---
 sprout/container/container_range_traits.hpp | 28 +++++++
 sprout/container/data.hpp                   | 86 +++++++++++++++++++++
 sprout/container/range_functions.hpp        |  1 +
 sprout/container/range_functions_fwd.hpp    | 10 +++
 4 files changed, 125 insertions(+)
 create mode 100644 sprout/container/data.hpp

diff --git a/sprout/container/container_range_traits.hpp b/sprout/container/container_range_traits.hpp
index 0b9db527..e062f9c7 100644
--- a/sprout/container/container_range_traits.hpp
+++ b/sprout/container/container_range_traits.hpp
@@ -372,6 +372,15 @@ namespace sprout {
 		range_end(Container const& cont) {
 			return cont.end();
 		}
+		// data access:
+		static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::pointer
+		range_data(Container& cont) {
+			return cont.data();
+		}
+		static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
+		range_data(Container const& cont) {
+			return cont.data();
+		}
 	};
 	template<typename Container>
 	struct container_range_traits<Container const> {
@@ -407,6 +416,11 @@ namespace sprout {
 		range_at(Container const& cont, typename sprout::container_traits<Container const>::size_type i) {
 			return sprout::container_range_traits<Container>::range_at(cont, i);
 		}
+		// data access:
+		static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
+		range_data(Container const& cont) {
+			return sprout::container_range_traits<Container>::range_data(cont);
+		}
 	};
 
 	template<typename T, std::size_t N>
@@ -467,6 +481,15 @@ namespace sprout {
 		range_at(T const (& arr)[N], typename sprout::container_traits<T const[N]>::size_type i) {
 			return arr[i];
 		}
+		// data access:
+		static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::pointer
+		range_data(T (& arr)[N]) {
+			return &arr[0];
+		}
+		static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::pointer
+		range_data(T const (& arr)[N]) {
+			return &arr[0];
+		}
 	};
 	template<typename T, std::size_t N>
 	struct container_range_traits<T const[N]> {
@@ -502,6 +525,11 @@ namespace sprout {
 		range_at(T const (& arr)[N], typename sprout::container_traits<T const[N]>::size_type i) {
 			return sprout::container_range_traits<T[N]>::range_at(arr, i);
 		}
+		// data access:
+		static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::pointer
+		range_data(T const (& arr)[N]) {
+			return sprout::container_range_traits<T[N]>::range_data(arr);
+		}
 	};
 }	// namespace sprout
 
diff --git a/sprout/container/data.hpp b/sprout/container/data.hpp
new file mode 100644
index 00000000..4d14d1bf
--- /dev/null
+++ b/sprout/container/data.hpp
@@ -0,0 +1,86 @@
+/*=============================================================================
+  Copyright (c) 2011-2014 Bolero MURAKAMI
+  https://github.com/bolero-MURAKAMI/Sprout
+
+  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)
+=============================================================================*/
+#ifndef SPROUT_CONTAINER_DATA_HPP
+#define SPROUT_CONTAINER_DATA_HPP
+
+#include <sprout/config.hpp>
+#include <sprout/workaround/std/cstddef.hpp>
+#include <sprout/container/traits_fwd.hpp>
+#include <sprout/container/container_traits.hpp>
+#include <sprout/adl/not_found.hpp>
+
+namespace sprout_adl {
+	sprout::not_found_via_adl range_data(...);
+}	// namespace sprout_adl
+
+namespace sprout {
+	namespace container_detail {
+		template<typename Container>
+		inline SPROUT_CONSTEXPR typename sprout::container_traits<Container>::pointer
+		range_data(Container& cont) {
+			return sprout::container_range_traits<Container>::range_data(cont);
+		}
+		template<typename Container>
+		inline SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
+		range_data(Container const& cont) {
+			return sprout::container_range_traits<Container>::range_data(cont);
+		}
+	}	// namespace container_detail
+
+	//
+	// data
+	//
+	//	effect:
+	//		ADL callable range_data(cont) -> range_data(cont)
+	//		otherwise -> sprout::container_range_traits<Container>::range_data(cont)
+	//		[default]
+	//			cont.data()
+	//
+	template<typename Container>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<Container>::pointer
+	data(Container& cont) {
+		using sprout::container_detail::range_data;
+		using sprout_adl::range_data;
+		return range_data(cont);
+	}
+	template<typename Container>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
+	data(Container const& cont) {
+		using sprout::container_detail::range_data;
+		using sprout_adl::range_data;
+		return range_data(cont);
+	}
+	template<typename T, std::size_t N>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::pointer
+	data(T (& arr)[N]) {
+		return sprout::container_detail::range_data(arr);
+	}
+	template<typename T, std::size_t N>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::pointer
+	data(T const (& arr)[N]) {
+		return sprout::container_detail::range_data(arr);
+	}
+
+	//
+	// cdata
+	//
+	template<typename Container>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
+	cdata(Container const& cont) {
+		return sprout::data(cont);
+	}
+	template<typename T, std::size_t N>
+	inline SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::pointer
+	cdata(T const (& arr)[N]) {
+		return sprout::data(arr);
+	}
+}	// namespace sprout
+
+#include <sprout/container/container_range_traits.hpp>
+
+#endif	// #ifndef SPROUT_CONTAINER_DATA_HPP
diff --git a/sprout/container/range_functions.hpp b/sprout/container/range_functions.hpp
index a4e594a4..5d144b36 100644
--- a/sprout/container/range_functions.hpp
+++ b/sprout/container/range_functions.hpp
@@ -17,5 +17,6 @@
 #include <sprout/container/front.hpp>
 #include <sprout/container/back.hpp>
 #include <sprout/container/at.hpp>
+#include <sprout/container/data.hpp>
 
 #endif	// #ifndef SPROUT_CONTAINER_RANGE_FUNCTIONS_HPP
diff --git a/sprout/container/range_functions_fwd.hpp b/sprout/container/range_functions_fwd.hpp
index 44b1da03..9bbd6db3 100644
--- a/sprout/container/range_functions_fwd.hpp
+++ b/sprout/container/range_functions_fwd.hpp
@@ -75,6 +75,16 @@ namespace sprout {
 	template<typename Container>
 	SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
 	at(Container const& cont, typename sprout::container_traits<Container const>::size_type i);
+
+	//
+	// data
+	//
+	template<typename Container>
+	SPROUT_CONSTEXPR typename sprout::container_traits<Container>::pointer
+	data(Container& cont);
+	template<typename Container>
+	SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
+	data(Container const& cont);
 }	// namespace sprout