--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/accessor.h	Thu Mar 31 10:45:34 2011 +0100
@@ -0,0 +1,90 @@
+#ifndef __ACCESSOR_H
+#define __ACCESSOR_H
+
+
+// variable declaration macros
+#define __DECLARE_VAR(type, name)\
+	__IEC_##type##_t name;
+#define __DECLARE_GLOBAL(type, resource, name)\
+	__IEC_##type##_t resource##__##name;\
+	static __IEC_##type##_t *GLOBAL__##name = &resource##__##name;\
+	void __INIT_GLOBAL_##name(type value) {\
+		(*GLOBAL__##name).value = value;\
+	}\
+	void __SET_GLOBAL_##name(type value) {\
+		if (!((*GLOBAL__##name).flags & __IEC_FORCE_FLAG))\
+			(*GLOBAL__##name).value = value;\
+	}\
+	type* __GET_GLOBAL_##name(void) {\
+		return &((*GLOBAL__##name).value);\
+	}
+#define __DECLARE_GLOBAL_LOCATION(type, location)\
+	extern type *location;
+#define __DECLARE_GLOBAL_LOCATED(type, resource, name)\
+	__IEC_##type##_p resource##__##name;\
+	static __IEC_##type##_p *GLOBAL__##name = &resource##__##name;\
+	void __INIT_GLOBAL_##name(type value) {\
+		*((*GLOBAL__##name).value) = value;\
+	}\
+	void __SET_GLOBAL_##name(type value) {\
+		if (!((*GLOBAL__##name).flags & __IEC_FORCE_FLAG))\
+			*((*GLOBAL__##name).value) = value;\
+	}\
+	type* __GET_GLOBAL_##name(void) {\
+		return (*GLOBAL__##name).value;\
+	}
+#define __DECLARE_EXTERNAL(type, name)\
+	__IEC_##type##_p name;
+#define __DECLARE_LOCATED(type, name)\
+	__IEC_##type##_p name;
+
+
+// variable initialization macros
+#define __INIT_RETAIN(name, retained)\
+    name.flags |= retained?__IEC_RETAIN_FLAG:0;
+#define __INIT_VAR(name, initial, retained)\
+	name.value = initial;\
+	__INIT_RETAIN(name, retained)
+#define __INIT_GLOBAL(name, initial, retained)\
+	__INIT_GLOBAL_##name(initial);\
+	__INIT_RETAIN((*GLOBAL__##name), retained)
+#define __INIT_GLOBAL_LOCATED(resource, name, location, retained)\
+	resource##__##name.value = location;\
+	__INIT_RETAIN(resource##__##name, retained)
+#define __INIT_EXTERNAL(type, global, name, retained)\
+	name.value = __GET_GLOBAL_##global();\
+    __INIT_RETAIN(name, retained)
+#define __INIT_LOCATED(type, location, name, retained)\
+	{extern type *location;\
+	 name.value = location;\
+	 __INIT_RETAIN(name, retained)}
+#define __INIT_LOCATED_VALUE(name, initial)\
+	*(name.value) = initial;
+
+
+// variable getting macros
+#define __GET_VAR(name, ...)\
+	name.value __VA_ARGS__
+#define __GET_EXTERNAL(name, ...)\
+	((name.flags & __IEC_FORCE_FLAG) ? name.fvalue __VA_ARGS__ : *(name.value) __VA_ARGS__)
+#define __GET_LOCATED(name, ...)\
+	((name.flags & __IEC_FORCE_FLAG) ? name.fvalue __VA_ARGS__ : *(name.value) __VA_ARGS__)
+#define __GET_VAR_BY_REF(name, ...)\
+	((name.flags & __IEC_FORCE_FLAG) ? &(name.fvalue __VA_ARGS__) : &(name.value __VA_ARGS__))
+#define __GET_EXTERNAL_BY_REF(name, ...)\
+	((name.flags & __IEC_FORCE_FLAG) ? &(name.fvalue __VA_ARGS__) : &(*(name.value) __VA_ARGS__))
+#define __GET_LOCATED_BY_REF(name, ...)\
+	((name.flags & __IEC_FORCE_FLAG) ? &(name.fvalue __VA_ARGS__) : &(*(name.value) __VA_ARGS__))
+
+// variable setting macros
+#define __SET_VAR(name, new_value, ...)\
+	if (!(name.flags & __IEC_FORCE_FLAG)) name.value __VA_ARGS__ = new_value
+#define __SET_EXTERNAL(global, name, new_value)\
+	if (!(name.flags & __IEC_FORCE_FLAG))\
+		__SET_GLOBAL_##global(new_value)
+#define __SET_COMPLEX_EXTERNAL(name, new_value, ...)\
+	*(name.value) __VA_ARGS__ = new_value
+#define __SET_LOCATED(name, new_value, ...)\
+	if (!(name.flags & __IEC_FORCE_FLAG)) *(name.value) __VA_ARGS__ = new_value
+
+#endif //__ACCESSOR_H