From f87110f3d83e0d899af6f44d03fdf7ceb7da6afd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Can=20B=C3=B6l=C3=BCk?= <can.boluk89@gmail.com>
Date: Sun, 28 Jun 2020 01:18:45 +0200
Subject: [PATCH] Implementing tuple enumeration/visiting.

---
 VTIL-Common/CMakeLists.txt              |  1 +
 VTIL-Common/VTIL-Common.vcxproj         |  1 +
 VTIL-Common/VTIL-Common.vcxproj.filters |  3 ++
 VTIL-Common/includes/vtil/utility       |  3 +-
 VTIL-Common/util/tuple_visit.hpp        | 46 +++++++++++++++++++++++++
 5 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 VTIL-Common/util/tuple_visit.hpp

diff --git a/VTIL-Common/CMakeLists.txt b/VTIL-Common/CMakeLists.txt
index ed8b2a7..28b48cd 100644
--- a/VTIL-Common/CMakeLists.txt
+++ b/VTIL-Common/CMakeLists.txt
@@ -56,6 +56,7 @@ add_library(${PROJECT_NAME} STATIC
     util/zip.hpp
     util/colony.hpp
     util/object_pool.hpp
+    util/tuple_visit.hpp
 )
 
 target_include_directories(${PROJECT_NAME} PUBLIC includes)
diff --git a/VTIL-Common/VTIL-Common.vcxproj b/VTIL-Common/VTIL-Common.vcxproj
index aaba6ab..95a6a6b 100644
--- a/VTIL-Common/VTIL-Common.vcxproj
+++ b/VTIL-Common/VTIL-Common.vcxproj
@@ -165,6 +165,7 @@
     <ClInclude Include="util\reverse_iterator.hpp" />
     <ClInclude Include="util\sinkhole.hpp" />
     <ClInclude Include="util\stack_container.hpp" />
+    <ClInclude Include="util\tuple_visit.hpp" />
     <ClInclude Include="util\zip.hpp" />
     <ClInclude Include="util\variant.hpp" />
   </ItemGroup>
diff --git a/VTIL-Common/VTIL-Common.vcxproj.filters b/VTIL-Common/VTIL-Common.vcxproj.filters
index 654dcb5..db07c99 100644
--- a/VTIL-Common/VTIL-Common.vcxproj.filters
+++ b/VTIL-Common/VTIL-Common.vcxproj.filters
@@ -184,6 +184,9 @@
     <ClInclude Include="util\object_pool.hpp">
       <Filter>Utility</Filter>
     </ClInclude>
+    <ClInclude Include="util\tuple_visit.hpp">
+      <Filter>Utility</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="io\logger.cpp">
diff --git a/VTIL-Common/includes/vtil/utility b/VTIL-Common/includes/vtil/utility
index 71c81d5..2c47831 100644
--- a/VTIL-Common/includes/vtil/utility
+++ b/VTIL-Common/includes/vtil/utility
@@ -19,4 +19,5 @@
 #include "../../util/reverse_iterator.hpp"
 #include "../../util/conditional_lock.hpp"
 #include "../../util/numeric_iterator.hpp"
-#include "../../util/multivariate.hpp"
\ No newline at end of file
+#include "../../util/multivariate.hpp"
+#include "../../util/tuple_visit.hpp"
\ No newline at end of file
diff --git a/VTIL-Common/util/tuple_visit.hpp b/VTIL-Common/util/tuple_visit.hpp
new file mode 100644
index 0000000..0e33943
--- /dev/null
+++ b/VTIL-Common/util/tuple_visit.hpp
@@ -0,0 +1,46 @@
+// Copyright (c) 2020 Can Boluk and contributors of the VTIL Project   
+// All rights reserved.   
+//    
+// Redistribution and use in source and binary forms, with or without   
+// modification, are permitted provided that the following conditions are met: 
+//    
+// 1. Redistributions of source code must retain the above copyright notice,   
+//    this list of conditions and the following disclaimer.   
+// 2. Redistributions in binary form must reproduce the above copyright   
+//    notice, this list of conditions and the following disclaimer in the   
+//    documentation and/or other materials provided with the distribution.   
+// 3. Neither the name of mosquitto nor the names of its   
+//    contributors may be used to endorse or promote products derived from   
+//    this software without specific prior written permission.   
+//    
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE   
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE   
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR   
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF   
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS   
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN   
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)   
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  
+// POSSIBILITY OF SUCH DAMAGE.        
+//
+#pragma once
+#include <tuple>
+#include <type_traits>
+
+namespace vtil
+{
+	template<typename T, typename Fn, size_t... I>
+	static void tuple_visit( const T& obj, Fn callable, std::index_sequence<I...> )
+	{
+		static constexpr auto ignore = [ ] ( ... ) {};
+		ignore( ( callable( std::get<I>( obj ) ), 0 )... );
+	}
+
+	template<typename Fn, typename... Tx>
+	static void tuple_visit( const std::tuple<Tx...>& obj, Fn&& callable )
+	{
+		return tuple_visit( obj, std::forward<Fn>( callable ), std::index_sequence_for<Tx...>{} );
+	}
+};
\ No newline at end of file