From 77da776b9e1199ffc266c878c951f76c2506512c Mon Sep 17 00:00:00 2001
From: aster2013 <asterjian@qq.com>
Date: Thu, 7 Jul 2016 18:39:02 +0800
Subject: [PATCH 1/2] Add external property getter and setter function.

---
 include/kaguya/metatable.hpp | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/include/kaguya/metatable.hpp b/include/kaguya/metatable.hpp
index 85d154f..160188a 100644
--- a/include/kaguya/metatable.hpp
+++ b/include/kaguya/metatable.hpp
@@ -186,6 +186,24 @@ namespace kaguya
 			return *this;
 		}
 
+        /**
+        * @name addProperty
+        * @brief add member property with external getter function.(experimental)
+        * @param name function name for lua
+        * @param getter getter 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;
+        }
+
 		/**
 		* @name addProperty
 		* @brief add member property with setter, getter functions.(experimental)
@@ -205,6 +223,24 @@ namespace kaguya
 			return *this;
 		}
 
+        /**
+        * @name addProperty
+        * @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;
+        }
 
 		/**
 		* @name addStaticFunction

From 0e4362ae285fae1e896d59ad1df273e1b4b08e4b Mon Sep 17 00:00:00 2001
From: satoren <satoreyo@hotmail.com>
Date: Mon, 8 Aug 2016 20:58:22 +0900
Subject: [PATCH 2/2] add test for addProperty by external function

---
 test/test_02_classreg.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/test/test_02_classreg.cpp b/test/test_02_classreg.cpp
index fc1465d..d284c86 100644
--- a/test/test_02_classreg.cpp
+++ b/test/test_02_classreg.cpp
@@ -1401,4 +1401,26 @@ KAGUYA_TEST_FUNCTION_DEF(self_refcounted_object)(kaguya::State& )
 
 }
 
+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)