From c318121dc8b877b061233a1328aabe68182cba5f Mon Sep 17 00:00:00 2001
From: Stephen Seo <seo.disparate@gmail.com>
Date: Fri, 4 Mar 2016 20:20:56 +0900
Subject: [PATCH] Split Meta.hpp

---
 src/CMakeLists.txt       |  4 ++-
 src/EC/Meta.hpp          | 59 ----------------------------------------
 src/EC/Meta/Contains.hpp | 33 ++++++++++++++++++++++
 src/EC/Meta/IndexOf.hpp  | 33 ++++++++++++++++++++++
 src/EC/Meta/Meta.hpp     |  5 ++++
 src/EC/Meta/TypeList.hpp | 21 ++++++++++++++
 src/test/MetaTest.cpp    |  2 +-
 7 files changed, 96 insertions(+), 61 deletions(-)
 delete mode 100644 src/EC/Meta.hpp
 create mode 100644 src/EC/Meta/Contains.hpp
 create mode 100644 src/EC/Meta/IndexOf.hpp
 create mode 100644 src/EC/Meta/Meta.hpp
 create mode 100644 src/EC/Meta/TypeList.hpp

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 8b8ca51..b32d907 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -2,7 +2,9 @@ cmake_minimum_required(VERSION 3.0)
 project(EntityComponentSystem)
 
 set(EntityComponentSystem_HEADERS
-    EC/Meta.hpp)
+    EC/Meta/TypeList.hpp
+    EC/Meta/Contains.hpp
+    EC/Meta/IndexOf.hpp)
 
 add_library(EntityComponentSystem INTERFACE)
 target_include_directories(EntityComponentSystem INTERFACE ${CMAKE_SOURCE_DIR})
diff --git a/src/EC/Meta.hpp b/src/EC/Meta.hpp
deleted file mode 100644
index ab62b74..0000000
--- a/src/EC/Meta.hpp
+++ /dev/null
@@ -1,59 +0,0 @@
-
-#ifndef EC_META_HPP
-#define EC_META_HPP
-
-#include <type_traits>
-
-namespace EC
-{
-    namespace Meta
-    {
-        template <typename... Types>
-        struct TypeList
-        {
-            static constexpr std::size_t size{sizeof...(Types)};
-
-        };
-
-        template <typename T, typename... Types>
-        struct ContainsHelper :
-            std::false_type
-        {
-        };
-
-        template <typename T, typename Type, typename... Types>
-        struct ContainsHelper<T, TypeList<Type, Types...> > :
-            std::conditional<
-                std::is_same<T, Type>::value,
-                std::true_type,
-                ContainsHelper<T, TypeList<Types...> >
-            >::type
-        {
-        };
-
-        template <typename T, typename TTypeList>
-        using Contains = std::integral_constant<bool, ContainsHelper<T, TTypeList>::value >;
-
-        template <typename T, typename... Types>
-        struct IndexOf
-        {
-        };
-
-        template <typename T, typename... Types>
-        struct IndexOf<T, TypeList<T, Types...> > :
-            std::integral_constant<std::size_t, 0>
-        {
-        };
-
-        template <typename T, typename Type, typename... Types>
-        struct IndexOf<T, TypeList<Type, Types...> > :
-            std::integral_constant<std::size_t, 1 +
-                IndexOf<T, TypeList<Types...> >::value
-            >
-        {
-        };
-    }
-}
-
-#endif
-
diff --git a/src/EC/Meta/Contains.hpp b/src/EC/Meta/Contains.hpp
new file mode 100644
index 0000000..4dc32c8
--- /dev/null
+++ b/src/EC/Meta/Contains.hpp
@@ -0,0 +1,33 @@
+
+#ifndef EC_META_CONTAINS_HPP
+#define EC_META_CONTAINS_HPP
+
+#include "TypeList.hpp"
+
+namespace EC
+{
+    namespace Meta
+    {
+        template <typename T, typename... Types>
+        struct ContainsHelper :
+            std::false_type
+        {
+        };
+
+        template <typename T, typename Type, typename... Types>
+        struct ContainsHelper<T, TypeList<Type, Types...> > :
+            std::conditional<
+                std::is_same<T, Type>::value,
+                std::true_type,
+                ContainsHelper<T, TypeList<Types...> >
+            >::type
+        {
+        };
+
+        template <typename T, typename TTypeList>
+        using Contains = std::integral_constant<bool, ContainsHelper<T, TTypeList>::value >;
+    }
+}
+
+#endif
+
diff --git a/src/EC/Meta/IndexOf.hpp b/src/EC/Meta/IndexOf.hpp
new file mode 100644
index 0000000..8adf44f
--- /dev/null
+++ b/src/EC/Meta/IndexOf.hpp
@@ -0,0 +1,33 @@
+
+#ifndef EC_META_INDEX_OF_HPP
+#define EC_META_INDEX_OF_HPP
+
+#include "TypeList.hpp"
+
+namespace EC
+{
+    namespace Meta
+    {
+        template <typename T, typename... Types>
+        struct IndexOf
+        {
+        };
+
+        template <typename T, typename... Types>
+        struct IndexOf<T, TypeList<T, Types...> > :
+            std::integral_constant<std::size_t, 0>
+        {
+        };
+
+        template <typename T, typename Type, typename... Types>
+        struct IndexOf<T, TypeList<Type, Types...> > :
+            std::integral_constant<std::size_t, 1 +
+                IndexOf<T, TypeList<Types...> >::value
+            >
+        {
+        };
+    }
+}
+
+#endif
+
diff --git a/src/EC/Meta/Meta.hpp b/src/EC/Meta/Meta.hpp
new file mode 100644
index 0000000..69c2206
--- /dev/null
+++ b/src/EC/Meta/Meta.hpp
@@ -0,0 +1,5 @@
+
+#include "TypeList.hpp"
+#include "Contains.hpp"
+#include "IndexOf.hpp"
+
diff --git a/src/EC/Meta/TypeList.hpp b/src/EC/Meta/TypeList.hpp
new file mode 100644
index 0000000..560dbe9
--- /dev/null
+++ b/src/EC/Meta/TypeList.hpp
@@ -0,0 +1,21 @@
+
+#ifndef EC_META_TYPE_LIST_HPP
+#define EC_META_TYPE_LIST_HPP
+
+#include <type_traits>
+
+namespace EC
+{
+    namespace Meta
+    {
+        template <typename... Types>
+        struct TypeList
+        {
+            static constexpr std::size_t size{sizeof...(Types)};
+
+        };
+    }
+}
+
+#endif
+
diff --git a/src/test/MetaTest.cpp b/src/test/MetaTest.cpp
index 26c32fa..3bb4ea8 100644
--- a/src/test/MetaTest.cpp
+++ b/src/test/MetaTest.cpp
@@ -1,7 +1,7 @@
 
 #include <gtest/gtest.h>
 
-#include <EC/Meta.hpp>
+#include <EC/Meta/Meta.hpp>
 
 struct C0 {};
 struct C1 {};