Merge branch 'refs/heads/pr/34'

# Conflicts:
#	include/kaguya/metatable.hpp
#	test/test_02_classreg.cpp

Author: satoren

include/kaguya/metatable.hpp

@@ -316,6 +316,22 @@ namespace kaguya
 			return *this;
 		}
 
+		/// @brief add member property with setter, getter functions.(experimental)
+		/// @param name function name for lua
+		/// @param getter getter function
+		/// @param setter setter function
+        template<typename GetType>
+        UserdataMetatable& addProperty(const char* name, GetType(*getter)(const class_type*))
+        {
+            if (has_key(name))
+            {
+                throw KaguyaException("already registered.");
+                return *this;
+            }
+            property_map_[name] = AnyDataPusher(function(getter));
+            return *this;
+        }
+
 		/// @brief add member property with setter, getter functions.(experimental)
 		/// @param name function name for lua
 		/// @param getter getter function
@@ -332,6 +348,23 @@ namespace kaguya
 			return *this;
 		}
 
+
+		/// @brief add member property with external setter, getter functions.(experimental)
+		/// @param name function name for lua
+		/// @param getter getter function
+		/// @param setter setter function
+        template<typename GetType, typename SetType>
+        UserdataMetatable& addProperty(const char* name, GetType(*getter)(const class_type*), void (*setter)(class_type*, SetType))
+        {
+            if (has_key(name))
+            {
+                throw KaguyaException("already registered.");
+                return *this;
+            }
+            property_map_[name] = AnyDataPusher(overload(getter, setter));
+            return *this;
+        }
+
 		/// @brief add non member function
 		/// @param name function name for lua
 		/// @param f function

test/test_02_classreg.cpp

@@ -1607,5 +1607,26 @@ KAGUYA_TEST_FUNCTION_DEF(arg_type_mismatch_error)(kaguya::State& state)
 
 	TEST_CHECK(last_error_message.find("mismatch") != std::string::npos);
 };
+int Base_a_getter(const Base* self)
+{
+	return self->a;
+}
+void Base_a_setter(Base* self,int v)
+{
+	self->a = v;
+}
+KAGUYA_TEST_FUNCTION_DEF(add_property_external)(kaguya::State& state)
+{
+
+	state["Base"].setClass(kaguya::UserdataMetatable<Base>()
+		.setConstructors<Base()>()
+		.addProperty("a", &Base_a_getter,&Base_a_setter)
+	);
+	Base base;
+	state["base"] = &base;
+	TEST_CHECK(state("base.a=1"));
+	TEST_CHECK(state("assert(1 == base.a)"));
+	TEST_EQUAL(base.a, 1);
+}
 
 KAGUYA_TEST_GROUP_END(test_02_classreg)