Allow registration of classes and functions using an object

This allows use of module() without pollution of the global environment, e.g.

local mylib = require("mylib")

extern "C" int luaopen_mylib(lua_State* L)
{
    using namespace luaponte;

    object mylib = newtable(L);

    module(mylib)
    [
        …
    ];

    mylib.push(L);

    return 1;
}

Conflicts:
	luaponte/scope.hpp
	src/scope.cpp

luabind/scope.hpp

@@ -25,6 +25,7 @@
 
 #include <luabind/prefix.hpp>
 #include <luabind/config.hpp>
+#include <luabind/object.hpp>
 #include <luabind/lua_state_fwd.hpp>
 #include <memory>
 
@@ -84,14 +85,20 @@ namespace luabind {
     class LUABIND_API module_
     {
     public:
-        module_(lua_State* L_, char const* name);
+        module_(object const& table);
+        module_(lua_State* L, char const* name);
         void operator[](scope s);
 
     private:
-        lua_State* m_state;
-        char const* m_name;
+        object m_table;
     };
 
+    inline module_ module(object const& table)
+    {
+        return module_(table);
+    }
+
+
     inline module_ module(lua_State* L, char const* name = 0)
     {
         return module_(L, name);

src/scope.cpp

@@ -130,37 +130,43 @@ namespace luabind {
 
     } // namespace unnamed
 
-    module_::module_(lua_State* L, char const* name = 0)
-        : m_state(L)
-        , m_name(name)
+    module_::module_(object const& table)
+        : m_table(table)
     {
     }
 
-    void module_::operator[](scope s)
+    module_::module_(lua_State* L, char const* name)
     {
-        if (m_name)
+        if (name)
         {
-            lua_getglobal(m_state, m_name);
+            lua_getglobal(L, name);
 
-            if (!lua_istable(m_state, -1))
+            if (!lua_istable(L, -1))
             {
-                lua_pop(m_state, 1);
+                lua_pop(L, 1);
 
-                lua_newtable(m_state);
-                lua_pushvalue(m_state, -1);
-                lua_setglobal(m_state, m_name);
+                lua_newtable(L);
+                lua_pushvalue(L, -1);
+                lua_setglobal(L, name);
             }
         }
         else
         {
-            lua_pushglobaltable(m_state);
+            lua_pushglobaltable(L);
         }
 
-        lua_pop_stack guard(m_state);
-
-        s.register_(m_state);
+        m_table = object(from_stack(L, -1));
+        lua_pop(L, 1);
     }
 
+    void module_::operator[](scope s)
+    {
+        lua_State* L = m_table.interpreter();
+        m_table.push(L);
+        lua_pop_stack guard(L);
+        s.register_(L);
+     }
+
     struct namespace_::registration_ : detail::registration
     {
         registration_(char const* name)

test/test_scope.cpp

@@ -100,6 +100,15 @@ void test_main(lua_State* L)
         ]
     ];
 
+    object test = newtable(L);
+
+    module(test)
+    [
+        namespace_("inner")
+        [
+            def("h", &h)
+        ]
+    ];
 
     DOSTRING(L, "assert(test.f() == 1)");
     DOSTRING(L, "assert(test.f(3) == 2)");
@@ -115,4 +124,8 @@ void test_main(lua_State* L)
     DOSTRING(L, "assert(test.inner.g(7) == 5)");
     DOSTRING(L, "assert(test.inner.f(4) == 3)");
     DOSTRING(L, "assert(test.inner.h() == 6)");
+
+    globals(L)["test_object"] = test;
+
+    DOSTRING(L, "assert(test_object.inner.h() == 6)");
 }