From 37dc93b40aba3ab73dc303ccbab5f2b020e64ba0 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 23 Feb 2017 22:19:19 +0100
Subject: luaBridge support const references to class-instance pointers

Support passing "T*" as as "const T* &"  argument
e.g. std::list<T*>::push_back ( const T* & )
---
 libs/lua/LuaBridge/detail/Userdata.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'libs/lua/LuaBridge')

diff --git a/libs/lua/LuaBridge/detail/Userdata.h b/libs/lua/LuaBridge/detail/Userdata.h
index feab28f132..eaa669811e 100644
--- a/libs/lua/LuaBridge/detail/Userdata.h
+++ b/libs/lua/LuaBridge/detail/Userdata.h
@@ -783,6 +783,22 @@ struct Stack <T const* const>
   }
 };
 
+// const references to class-instance pointers
+// e.g.   std::list<T*>::push_back ( const T* & )
+template <class T>
+struct Stack <T* const&>
+{
+  static inline void push (lua_State* L, T* const& p)
+  {
+    UserdataPtr::push (L, p);
+  }
+
+  static inline T* get (lua_State* L, int index)
+  {
+    return Userdata::get <T> (L, index, true);
+  }
+};
+
 // reference
 template <class T>
 struct Stack <T&>
-- 
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