lib/accessor.h
author Conti Manuele <conti.ma@alice.it>
Tue, 17 Apr 2012 17:41:58 +0200
changeset 521 3127ddda2be2
parent 403 b6568471de90
child 706 31553c22f318
permissions -rwxr-xr-x
Improve usability command line under windows.
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#ifndef __ACCESSOR_H
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#define __ACCESSOR_H
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#define __INITIAL_VALUE(...) __VA_ARGS__
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// variable declaration macros
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#define __DECLARE_VAR(type, name)\
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	__IEC_##type##_t name;
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#define __DECLARE_GLOBAL(type, domain, name)\
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	__IEC_##type##_t domain##__##name;\
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	static __IEC_##type##_t *GLOBAL__##name = &(domain##__##name);\
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	void __INIT_GLOBAL_##name(type value) {\
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		(*GLOBAL__##name).value = value;\
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	}\
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	IEC_BYTE __IS_GLOBAL_##name##_FORCED(void) {\
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		return (*GLOBAL__##name).flags & __IEC_FORCE_FLAG;\
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	}\
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	type* __GET_GLOBAL_##name(void) {\
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		return &((*GLOBAL__##name).value);\
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	}
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#define __DECLARE_GLOBAL_LOCATION(type, location)\
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	extern type *location;
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#define __DECLARE_GLOBAL_LOCATED(type, resource, name)\
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	__IEC_##type##_p resource##__##name;\
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	static __IEC_##type##_p *GLOBAL__##name = &(resource##__##name);\
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	void __INIT_GLOBAL_##name(type value) {\
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		*((*GLOBAL__##name).value) = value;\
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	}\
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	IEC_BYTE __IS_GLOBAL_##name##_FORCED(void) {\
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		return (*GLOBAL__##name).flags & __IEC_FORCE_FLAG;\
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	}\
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	type* __GET_GLOBAL_##name(void) {\
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		return (*GLOBAL__##name).value;\
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	}
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#define __DECLARE_GLOBAL_PROTOTYPE(type, name)\
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    extern type* __GET_GLOBAL_##name();
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#define __DECLARE_EXTERNAL(type, name)\
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	__IEC_##type##_p name;
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#define __DECLARE_LOCATED(type, name)\
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	__IEC_##type##_p name;
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// variable initialization macros
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#define __INIT_RETAIN(name, retained)\
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    name.flags |= retained?__IEC_RETAIN_FLAG:0;
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#define __INIT_VAR(name, initial, retained)\
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	name.value = initial;\
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	__INIT_RETAIN(name, retained)
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#define __INIT_GLOBAL(type, name, initial, retained)\
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    {\
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	    static const type temp = initial;\
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	    __INIT_GLOBAL_##name(temp);\
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	    __INIT_RETAIN((*GLOBAL__##name), retained)\
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    }
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#define __INIT_GLOBAL_LOCATED(domain, name, location, retained)\
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	domain##__##name.value = location;\
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	__INIT_RETAIN(domain##__##name, retained)
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#define __INIT_EXTERNAL(type, global, name, retained)\
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    {\
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		name.value = __GET_GLOBAL_##global();\
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		__INIT_RETAIN(name, retained)\
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    }
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#define __INIT_LOCATED(type, location, name, retained)\
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	{\
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		extern type *location;\
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		name.value = location;\
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		__INIT_RETAIN(name, retained)\
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    }
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#define __INIT_LOCATED_VALUE(name, initial)\
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	*(name.value) = initial;
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// variable getting macros
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#define __GET_VAR(name, ...)\
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	name.value __VA_ARGS__
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#define __GET_EXTERNAL(name, ...)\
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	((name.flags & __IEC_FORCE_FLAG) ? name.fvalue __VA_ARGS__ : (*(name.value)) __VA_ARGS__)
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#define __GET_LOCATED(name, ...)\
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	((name.flags & __IEC_FORCE_FLAG) ? name.fvalue __VA_ARGS__ : (*(name.value)) __VA_ARGS__)
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#define __GET_VAR_BY_REF(name, ...)\
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	((name.flags & __IEC_FORCE_FLAG) ? &(name.fvalue __VA_ARGS__) : &(name.value __VA_ARGS__))
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#define __GET_EXTERNAL_BY_REF(name, ...)\
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	((name.flags & __IEC_FORCE_FLAG) ? &(name.fvalue __VA_ARGS__) : &((*(name.value)) __VA_ARGS__))
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#define __GET_LOCATED_BY_REF(name, ...)\
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	((name.flags & __IEC_FORCE_FLAG) ? &(name.fvalue __VA_ARGS__) : &((*(name.value)) __VA_ARGS__))
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// variable setting macros
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#define __SET_VAR(prefix, name, new_value, ...)\
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	if (!(prefix name.flags & __IEC_FORCE_FLAG)) prefix name.value __VA_ARGS__ = new_value
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#define __SET_EXTERNAL(prefix, name, new_value, ...)\
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	if (!(prefix name.flags & __IEC_FORCE_FLAG || __IS_GLOBAL_##name##_FORCED()))\
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		(*(prefix name.value)) __VA_ARGS__ = new_value
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#define __SET_LOCATED(prefix, name, new_value, ...)\
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	if (!(prefix name.flags & __IEC_FORCE_FLAG)) *(prefix name.value) __VA_ARGS__ = new_value
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#endif //__ACCESSOR_H