From a2094b6831edb25cf6dd1409ceee7bd0c56ece0d Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 16 Mar 2017 20:08:17 +0100
Subject: Lua: provide instance-equal check as '==' comparator.

This deprecated explicit the "sameinstance()" method
---
 libs/lua/LuaBridge/detail/CFunctions.h | 19 ++++++++++++++++++-
 libs/lua/LuaBridge/detail/Namespace.h  | 12 ++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/libs/lua/LuaBridge/detail/CFunctions.h b/libs/lua/LuaBridge/detail/CFunctions.h
index 2f1c3f635b..2f94ab90e9 100644
--- a/libs/lua/LuaBridge/detail/CFunctions.h
+++ b/libs/lua/LuaBridge/detail/CFunctions.h
@@ -378,7 +378,6 @@ struct CFunc
     }
   };
 
-
   template <class T, class R>
   struct CastClass
   {
@@ -461,6 +460,24 @@ struct CFunc
     }
   };
 
+  template <class T>
+  struct ClassEqualCheck<boost::shared_ptr<T> >
+  {
+    static int f (lua_State* L)
+    {
+      return PtrEqualCheck<T>::f (L);
+    }
+  };
+
+  template <class T>
+  struct ClassEqualCheck<boost::weak_ptr<T> >
+  {
+    static int f (lua_State* L)
+    {
+      return WPtrEqualCheck<T>::f (L);
+    }
+  };
+
   template <class C, typename T>
   static int getPtrProperty (lua_State* L)
   {
diff --git a/libs/lua/LuaBridge/detail/Namespace.h b/libs/lua/LuaBridge/detail/Namespace.h
index 3644b9e157..b661093e2b 100644
--- a/libs/lua/LuaBridge/detail/Namespace.h
+++ b/libs/lua/LuaBridge/detail/Namespace.h
@@ -579,10 +579,14 @@ private:
         createConstTable (name);
         lua_pushcfunction (L, &CFunc::gcMetaMethod <T>);
         rawsetfield (L, -2, "__gc");
+        lua_pushcclosure (L, &CFunc::ClassEqualCheck <T>::f, 0);
+        rawsetfield (L, -2, "__eq");
 
         createClassTable (name);
         lua_pushcfunction (L, &CFunc::gcMetaMethod <T>);
         rawsetfield (L, -2, "__gc");
+        lua_pushcclosure (L, &CFunc::ClassEqualCheck <T>::f, 0);
+        rawsetfield (L, -2, "__eq");
 
         createStaticTable (name);
 
@@ -626,10 +630,14 @@ private:
       createConstTable (name);
       lua_pushcfunction (L, &CFunc::gcMetaMethod <T>);
       rawsetfield (L, -2, "__gc");
+      lua_pushcclosure (L, &CFunc::ClassEqualCheck <T>::f, 0);
+      rawsetfield (L, -2, "__eq");
 
       createClassTable (name);
       lua_pushcfunction (L, &CFunc::gcMetaMethod <T>);
       rawsetfield (L, -2, "__gc");
+      lua_pushcclosure (L, &CFunc::ClassEqualCheck <T>::f, 0);
+      rawsetfield (L, -2, "__eq");
 
       createStaticTable (name);
 
@@ -1159,10 +1167,14 @@ private:
         createConstTable (name);
         lua_pushcfunction (L, &CFunc::gcMetaMethod <T>);
         rawsetfield (L, -2, "__gc");
+        lua_pushcclosure (L, &CFunc::ClassEqualCheck <T>::f, 0);
+        rawsetfield (L, -2, "__eq");
 
         createClassTable (name);
         lua_pushcfunction (L, &CFunc::gcMetaMethod <T>);
         rawsetfield (L, -2, "__gc");
+        lua_pushcclosure (L, &CFunc::ClassEqualCheck <T>::f, 0);
+        rawsetfield (L, -2, "__eq");
 
         createStaticTable (name);
 
-- 
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