Add types example

examples/Makefile

@@ -3,7 +3,7 @@ RM              = rm -rf
 EXEC            = exec
 
 # Artifacts
-OBJS            = functions.out methods.out stack.out
+OBJS            = functions.out methods.out stack.out types.out
 DEPS            = $(OBJS:%=%.d)
 
 # Compiler

examples/types.cpp

@@ -0,0 +1,57 @@
+#include <lua.hpp>
+#include <luwra.hpp>
+
+#include <iostream>
+
+using namespace luwra;
+
+// You may add custom specializations of luwra::Value in order to retrieve them from the stack.
+template <>
+struct Value<char> {
+	/**
+	 * Retrieve the value at position `n`.
+	 */
+	static inline
+	char read(State* state, int n) {
+		auto str = Value<std::string>::read(state, n);
+
+		if (str.length() < 1) {
+			luaL_argerror(state, n, "Given empty string instead of character");
+		}
+
+		return str[0];
+	}
+
+	/**
+	 * Push the value onto the stack.
+	 */
+	static inline
+	int push(State* state, char val) {
+		if (val == 0)
+			return 0;
+
+		lua_pushlstring(state, &val, 1);
+
+		return 1;
+	}
+};
+
+static
+void read_chars(char a, char b) {
+	std::cout << "Got '" << a << b << "'" << std::endl;
+}
+
+int main() {
+	lua_State* state = luaL_newstate();
+	luaL_openlibs(state);
+
+	// Build stack
+	lua_pushstring(state, "H");
+	lua_pushstring(state, "i");
+
+	// Apply function to stack values
+	apply(state, read_chars);
+
+	lua_close(state);
+	return 0;
+}