MINOR: lua: move common function

This patch moves the function hlua_checkudata which check that
an object contains the expected class_reference as metatable.
This function is commonly used by all the lua functions.
The function hlua_metatype is also moved.

include/proto/hlua_fcn.h

@@ -1,6 +1,7 @@
 #ifndef _PROTO_HLUA_FCN_H
 #define _PROTO_HLUA_FCN_H
 
+void *hlua_checkudata(lua_State *L, int ud, int class_ref);
 int hlua_fcn_reg_core_fcn(lua_State *L);
 
 #endif /* _PROTO_HLUA_FCN_H */

src/hlua.c

@@ -306,47 +306,6 @@ __LJMP static inline void check_args(lua_State *L, int nb, char *fcn)
 	WILL_LJMP(luaL_error(L, "'%s' needs %d arguments", fcn, nb));
 }
 
-/* Return true if the data in stack[<ud>] is an object of
- * type <class_ref>.
- */
-static int hlua_metaistype(lua_State *L, int ud, int class_ref)
-{
-	if (!lua_getmetatable(L, ud))
-		return 0;
-
-	lua_rawgeti(L, LUA_REGISTRYINDEX, class_ref);
-	if (!lua_rawequal(L, -1, -2)) {
-		lua_pop(L, 2);
-		return 0;
-	}
-
-	lua_pop(L, 2);
-	return 1;
-}
-
-/* Return an object of the expected type, or throws an error. */
-__LJMP static void *hlua_checkudata(lua_State *L, int ud, int class_ref)
-{
-	void *p;
-
-	/* Check if the stack entry is an array. */
-	if (!lua_istable(L, ud))
-		WILL_LJMP(luaL_argerror(L, ud, NULL));
-	/* Check if the metadata have the expected type. */
-	if (!hlua_metaistype(L, ud, class_ref))
-		WILL_LJMP(luaL_argerror(L, ud, NULL));
-	/* Push on the stack at the entry [0] of the table. */
-	lua_rawgeti(L, ud, 0);
-	/* Check if this entry is userdata. */
-	p = lua_touserdata(L, -1);
-	if (!p)
-		WILL_LJMP(luaL_argerror(L, ud, NULL));
-	/* Remove the entry returned by lua_rawgeti(). */
-	lua_pop(L, 1);
-	/* Return the associated struct. */
-	return p;
-}
-
 /* This fucntion push an error string prefixed by the file name
  * and the line number where the error is encountered.
  */

src/hlua_fcn.c

@@ -9,6 +9,47 @@
 
 #include <common/time.h>
 
+/* Return true if the data in stack[<ud>] is an object of
+ * type <class_ref>.
+ */
+static int hlua_metaistype(lua_State *L, int ud, int class_ref)
+{
+	if (!lua_getmetatable(L, ud))
+		return 0;
+
+	lua_rawgeti(L, LUA_REGISTRYINDEX, class_ref);
+	if (!lua_rawequal(L, -1, -2)) {
+		lua_pop(L, 2);
+		return 0;
+	}
+
+	lua_pop(L, 2);
+	return 1;
+}
+
+/* Return an object of the expected type, or throws an error. */
+void *hlua_checkudata(lua_State *L, int ud, int class_ref)
+{
+	void *p;
+
+	/* Check if the stack entry is an array. */
+	if (!lua_istable(L, ud))
+		WILL_LJMP(luaL_argerror(L, ud, NULL));
+	/* Check if the metadata have the expected type. */
+	if (!hlua_metaistype(L, ud, class_ref))
+		WILL_LJMP(luaL_argerror(L, ud, NULL));
+	/* Push on the stack at the entry [0] of the table. */
+	lua_rawgeti(L, ud, 0);
+	/* Check if this entry is userdata. */
+	p = lua_touserdata(L, -1);
+	if (!p)
+		WILL_LJMP(luaL_argerror(L, ud, NULL));
+	/* Remove the entry returned by lua_rawgeti(). */
+	lua_pop(L, 1);
+	/* Return the associated struct. */
+	return p;
+}
+
 /* This function return the current date at epoch format in milliseconds. */
 int hlua_now(lua_State *L)
 {