1 files changed, 54 insertions, 0 deletions
diff --git a/Sluift/GenericLuaElementConvertor.h b/Sluift/GenericLuaElementConvertor.h
new file mode 100644
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--- /dev/null
+++ b/Sluift/GenericLuaElementConvertor.h
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+/*
+ * Copyright (c) 2013 Remko Tronçon
+ * Licensed under the GNU General Public License.
+ * See the COPYING file for more information.
+ */
+
+#pragma once
+
+#include <lua.hpp>
+#include <string>
+
+#include <Swiften/Base/Override.h>
+#include <Sluift/LuaElementConvertor.h>
+#include <Sluift/Lua/Check.h>
+#include <Sluift/Lua/LuaUtils.h>
+
+namespace Swift {
+	template<typename T>
+	class GenericLuaElementConvertor : public LuaElementConvertor {
+		public:
+			GenericLuaElementConvertor(const std::string& type) : type(type) {
+			}
+
+			virtual ~GenericLuaElementConvertor() {}
+
+			virtual boost::shared_ptr<Payload> convertFromLua(lua_State* L, int index, const std::string& payloadType) SWIFTEN_OVERRIDE {
+				if (payloadType == type) {
+					Lua::checkType(L, index, LUA_TTABLE);
+					lua_pushvalue(L, index);
+					boost::shared_ptr<Payload> result = doConvertFromLua(L);
+					lua_pop(L, 1);
+					return result;
+				}
+				return boost::shared_ptr<Payload>();
+			}
+
+			virtual boost::optional<std::string> convertToLua(
+					lua_State* L, boost::shared_ptr<Payload> payload) SWIFTEN_OVERRIDE {
+				if (boost::shared_ptr<T> actualPayload = boost::dynamic_pointer_cast<T>(payload)) {
+					doConvertToLua(L, actualPayload);
+					assert(lua_type(L, -1) == LUA_TTABLE);
+					return type;
+				}
+				return NO_RESULT;
+			}
+
+		protected:
+			virtual boost::shared_ptr<T> doConvertFromLua(lua_State*) = 0;
+			virtual void doConvertToLua(lua_State*, boost::shared_ptr<T>) = 0;
+
+		private:
+			std::string type;
+	};
+}