relptr.h File Reference

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Macros
#define	relptr(type)   union { type *relptr_type; Size relptr_off; }
#define	relptr_declare(type, relptrtype)    typedef relptr(type) relptrtype
#define	relptr_access(base, rp)
#define	relptr_is_null(rp)    ((rp).relptr_off == 0)
#define	relptr_offset(rp)    ((rp).relptr_off - 1)
#define	relptr_store(base, rp, val)
#define	relptr_copy(rp1, rp2)    ((rp1).relptr_off = (rp2).relptr_off)

Functions
static Size	relptr_store_eval (char *base, char *val)

Macro Definition Documentation

relptr

#define relptr

(

type

)

union { type *relptr_type; Size relptr_off; }

Definition at line 29 of file relptr.h.

relptr_access

#define relptr_access	(		base,
			rp
	)

Value:

    (AssertVariableIsOfTypeMacro(base, char *), \
     (void *) ((rp).relptr_off == 0 ? NULL : (base) + (rp).relptr_off - 1))

Definition at line 51 of file relptr.h.

relptr_copy

#define relptr_copy	(		rp1,
			rp2
	)		((rp1).relptr_off = (rp2).relptr_off)

Definition at line 90 of file relptr.h.

relptr_declare

#define relptr_declare	(		type,
			relptrtype
	)		typedef relptr(type) relptrtype

Definition at line 38 of file relptr.h.

relptr_is_null

#define relptr_is_null

(

rp

)

((rp).relptr_off == 0)

Definition at line 56 of file relptr.h.

relptr_offset

#define relptr_offset

(

rp

)

((rp).relptr_off - 1)

Definition at line 59 of file relptr.h.

relptr_store

#define relptr_store	(		base,
			rp,
			val
	)

Value:

    (AssertVariableIsOfTypeMacro(base, char *), \
     (rp).relptr_off = relptr_store_eval((base), (char *) (val)))

Definition at line 85 of file relptr.h.

Function Documentation

relptr_store_eval()

static Size relptr_store_eval ( char *  base, char *  val  )

inlinestatic

Definition at line 64 of file relptr.h.

{
    if (val == NULL)
        return 0;
    else
    {
        Assert(val >= base);
        return val - base + 1;
    }
}

References Assert(), and val.