2 files changed, 100 insertions, 0 deletions
diff --git a/Sluift/Lua/Value.cpp b/Sluift/Lua/Value.cpp
new file mode 100644
index 0000000..b612bd9
--- /dev/null
+++ b/Sluift/Lua/Value.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2011 Remko Tronçon
+ * Licensed under the GNU General Public License v3.
+ * See Documentation/Licenses/GPLv3.txt for more information.
+ */
+
+#include "Value.h"
+
+extern "C" {
+	#include <lualib.h>
+}
+#include <boost/variant/apply_visitor.hpp>
+#include <Swiften/Base/foreach.h>
+
+using namespace Swift;
+using namespace Swift::Lua;
+
+namespace {
+	struct PushVisitor : public boost::static_visitor<> {
+		PushVisitor(lua_State* state) : state(state) {
+		}
+
+		void operator()(const Nil&) const {
+			lua_pushnil(state);
+		}
+
+		void operator()(const bool& b) const {
+			lua_pushboolean(state, b);
+		}
+
+		void operator()(const int& i) const {
+			lua_pushnumber(state, i);
+		}
+
+		void operator()(const std::string& s) const {
+			lua_pushstring(state, s.c_str());
+		}
+
+		void operator()(const std::vector<Value>& list) const {
+			lua_newtable(state);
+			int i = 0;
+			foreach(const Value& value, list) {
+				boost::apply_visitor(PushVisitor(state), value);
+				lua_rawseti(state, -2, i + 1);
+			}
+		}
+
+		void operator()(const std::map<std::string, boost::shared_ptr<Value> >& table) const {
+			lua_createtable(state, 0, table.size());
+			for(std::map<std::string, boost::shared_ptr<Value> >::const_iterator i = table.begin(); i != table.end(); ++i) {
+				boost::apply_visitor(PushVisitor(state), *i->second);
+				lua_setfield(state, -2, i->first.c_str());
+			}
+		}
+
+		lua_State* state;
+	};
+}
+
+namespace Swift { namespace Lua {
+
+void pushValue(lua_State* state, const Value& value) {
+	boost::apply_visitor(PushVisitor(state), value);
+}
+
+}}
diff --git a/Sluift/Lua/Value.h b/Sluift/Lua/Value.h
new file mode 100644
index 0000000..9b6da34
--- /dev/null
+++ b/Sluift/Lua/Value.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2011 Remko Tronçon
+ * Licensed under the GNU General Public License v3.
+ * See Documentation/Licenses/GPLv3.txt for more information.
+ */
+
+#pragma once
+
+#include <map>
+#include <string>
+#include <vector>
+#include <boost/variant.hpp>
+#include <boost/shared_ptr.hpp>
+
+struct lua_State;
+
+namespace Swift {
+	namespace Lua {
+		struct Nil {};
+
+		typedef boost::make_recursive_variant<
+				Nil,
+				bool,
+				int, 
+				std::string,
+				std::vector< boost::recursive_variant_ >,
+				std::map<std::string, boost::shared_ptr<boost::recursive_variant_> >
+			>::type Value;
+
+		typedef std::map<std::string, boost::shared_ptr<Value> > Table;
+		
+		void pushValue(lua_State* state, const Value& value);
+	}
+}