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Diffstat (limited to 'Sluift/GenericLuaElementConvertor.h')
-rw-r--r--Sluift/GenericLuaElementConvertor.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/Sluift/GenericLuaElementConvertor.h b/Sluift/GenericLuaElementConvertor.h
new file mode 100644
index 0000000..afad481
--- /dev/null
+++ b/Sluift/GenericLuaElementConvertor.h
@@ -0,0 +1,54 @@
+/*
+ * 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;
+ };
+}