Dealing with structure description

Defines
#define	xf_offs(a, b)   ( (char *) (&((a)->b)) - (char *)(a) )
#define	XF_TYPE_EMPTY   0x00
	default
#define	XF_TYPE_STR   0x01
	String Type.
#define	XF_TYPE_FP   0x02
	Floating Point Type.
#define	XF_TYPE_LONG   0x03
	Long Integer Type.
#define	XF_TYPE_INT   0x04
	Integer Type.
#define	XF_TYPE_BYTE   0x05
	Byte Type.
#define	XF_TYPE_BOOLEAN   0x06
	Boolean Type.
#define	XF_TYPE_OBJECT   0x07
	Object Type.
#define	XF_TYPE_VEC   0x08
	Vector Type i.e. variable number of elements.
#define	XF_TYPE_UNION   0x09
	Union Type.
#define	XF_TYPE_REC   0x0A
	Structured Type.
#define	XF_TYPE_ARRAY   0x0B
	fixed length array
Typedefs
typedef xf_descr_list_s	xf_descr_list_t
	Class to describe object classes.
Functions
xf_descr_list_t *	xf_descr_list_new (int no, char *name)
	Constructor.
int	xf_descr_list_add (xf_descr_list_t *pd, int idx, int type, int size, int offs, int noffs, xf_descr_list_t *pl)
	Add member to the description list of a class (structure).

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Detailed Description

This module describe the methods to create and describe arbitrary C-structures

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Define Documentation

#define xf_offs	(	a,
		b		)	( (char *) (&((a)->b)) - (char *)(a) )

makro for computing offset from structure to member

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Typedef Documentation

typedef struct xf_descr_list_s xf_descr_list_t

Class to describe object classes.

This structure contains the list of members of a class (structure)

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Function Documentation

int xf_descr_list_add	(	xf_descr_list_t *	pd,
		int	idx,
		int	type,
		int	size,
		int	offs,
		int	noffs,
		xf_descr_list_t *	pl
	)

Add member to the description list of a class (structure).

Parameters:

	pd	Description to add member
	idx	Index position of member in object
	type	Type specifier of member
	size	Size of member
	offs	Offset in byte from object start to member
	noffs	Only for array, vector(list), union: offset to size or union member tag
	pl	Only for complex type member: description list of member

Returns:

• 0: OK
• else: Error

xf_descr_list_t* xf_descr_list_new	(	int	no,
		char *	name
	)

Constructor.

create empty list for members of a structured type

Parameters:

	no	number of members of object
	name	name of description list

Returns:

• The description list of a structured type

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