tupmacs.h File Reference

#include "catalog/pg_type_d.h"

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Macros
#define	fetchatt(A, T)   fetch_att(T, (A)->attbyval, (A)->attlen)
#define	att_align_datum(cur_offset, attalign, attlen, attdatum)
#define	att_align_pointer(cur_offset, attalign, attlen, attptr)
#define	att_align_nominal(cur_offset, attalign)
#define	att_addlength_datum(cur_offset, attlen, attdatum)    att_addlength_pointer(cur_offset, attlen, DatumGetPointer(attdatum))
#define	att_addlength_pointer(cur_offset, attlen, attptr)

Functions
static bool	att_isnull (int ATT, const bits8 *BITS)
static Datum	fetch_att (const void *T, bool attbyval, int attlen)
static void	store_att_byval (void *T, Datum newdatum, int attlen)

Macro Definition Documentation

att_addlength_datum

#define att_addlength_datum	(		cur_offset,
			attlen,
			attdatum
	)		att_addlength_pointer(cur_offset, attlen, DatumGetPointer(attdatum))

Definition at line 145 of file tupmacs.h.

att_addlength_pointer

#define att_addlength_pointer	(		cur_offset,
			attlen,
			attptr
	)

Value:

( \
    ((attlen) > 0) ? \
    ( \
        (cur_offset) + (attlen) \
    ) \
    : (((attlen) == -1) ? \
    ( \
        (cur_offset) + VARSIZE_ANY(attptr) \
    ) \
    : \
    ( \
        AssertMacro((attlen) == -2), \
        (cur_offset) + (strlen((char *) (attptr)) + 1) \
    )) \
)

Definition at line 157 of file tupmacs.h.

att_align_datum

#define att_align_datum	(		cur_offset,
			attalign,
			attlen,
			attdatum
	)

Value:

( \
    ((attlen) == -1 && VARATT_IS_SHORT(DatumGetPointer(attdatum))) ? \
    (uintptr_t) (cur_offset) : \
    att_align_nominal(cur_offset, attalign) \
)

Definition at line 86 of file tupmacs.h.

att_align_nominal

#define att_align_nominal	(		cur_offset,
			attalign
	)

Value:

( \
    ((attalign) == TYPALIGN_INT) ? INTALIGN(cur_offset) : \
     (((attalign) == TYPALIGN_CHAR) ? (uintptr_t) (cur_offset) : \
      (((attalign) == TYPALIGN_DOUBLE) ? DOUBLEALIGN(cur_offset) : \
       ( \
            AssertMacro((attalign) == TYPALIGN_SHORT), \
            SHORTALIGN(cur_offset) \
       ))) \
)

Definition at line 129 of file tupmacs.h.

att_align_pointer

#define att_align_pointer	(		cur_offset,
			attalign,
			attlen,
			attptr
	)

Value:

( \
    ((attlen) == -1 && VARATT_NOT_PAD_BYTE(attptr)) ? \
    (uintptr_t) (cur_offset) : \
    att_align_nominal(cur_offset, attalign) \
)

Definition at line 107 of file tupmacs.h.

fetchatt

#define fetchatt	(		A,
			T
	)		fetch_att(T, (A)->attbyval, (A)->attlen)

Definition at line 46 of file tupmacs.h.

Function Documentation

att_isnull()

static bool att_isnull ( int  ATT, const bits8 *  BITS  )

inlinestatic

Definition at line 26 of file tupmacs.h.

{
    return !(BITS[ATT >> 3] & (1 << (ATT & 0x07)));
}

Referenced by brin_deconstruct_tuple(), check_tuple_attribute(), fastgetattr(), heap_attisnull(), heap_deform_tuple(), index_deform_tuple_internal(), index_getattr(), nocache_index_getattr(), nocachegetattr(), slot_deform_heap_tuple(), and tuple_data_split_internal().

fetch_att()

static Datum fetch_att ( const void *  T, bool  attbyval, int  attlen  )

inlinestatic

Definition at line 52 of file tupmacs.h.

{
    if (attbyval)
    {
        switch (attlen)
        {
            case sizeof(char):
                return CharGetDatum(*((const char *) T));
            case sizeof(int16):
                return Int16GetDatum(*((const int16 *) T));
            case sizeof(int32):
                return Int32GetDatum(*((const int32 *) T));
#if SIZEOF_DATUM == 8
            case sizeof(Datum):
                return *((const Datum *) T);
#endif
            default:
                elog(ERROR, "unsupported byval length: %d", attlen);
                return 0;
        }
    }
    else
        return PointerGetDatum(T);
}

References attbyval, attlen, CharGetDatum(), elog(), ERROR, Int16GetDatum(), Int32GetDatum(), PointerGetDatum(), and T.

Referenced by array_iter_next(), array_iterate(), array_replace_internal(), array_to_text_internal(), ArrayCast(), brin_range_deserialize(), deconstruct_array(), ExecEvalHashedScalarArrayOp(), ExecEvalScalarArrayOp(), multirange_get_bounds(), PLyList_FromArray_recurse(), range_deserialize(), statext_mcv_deserialize(), width_bucket_array_fixed(), and width_bucket_array_variable().

store_att_byval()

static void store_att_byval ( void *  T, Datum  newdatum, int  attlen  )

inlinestatic

Definition at line 183 of file tupmacs.h.

{
    switch (attlen)
    {
        case sizeof(char):
            *(char *) T = DatumGetChar(newdatum);
            break;
        case sizeof(int16):
            *(int16 *) T = DatumGetInt16(newdatum);
            break;
        case sizeof(int32):
            *(int32 *) T = DatumGetInt32(newdatum);
            break;
#if SIZEOF_DATUM == 8
        case sizeof(Datum):
            *(Datum *) T = newdatum;
            break;
#endif
        default:
            elog(ERROR, "unsupported byval length: %d", attlen);
    }
}

References attlen, DatumGetChar(), DatumGetInt16(), DatumGetInt32(), elog(), ERROR, and T.

Referenced by ArrayCastAndSet(), brin_range_serialize(), datum_write(), fill_val(), and statext_mcv_serialize().