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_datum_alignby(cur_offset, attalignby, attlen, attdatum)
#define	att_align_pointer(cur_offset, attalign, attlen, attptr)
#define	att_pointer_alignby(cur_offset, attalignby, attlen, attptr)
#define	att_align_nominal(cur_offset, attalign)
#define	att_nominal_alignby(cur_offset, attalignby)    TYPEALIGN(attalignby, cur_offset)
#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 168 of file tupmacs.h.

    : (((attlen) == -1) ? \
    ( \
        (cur_offset) + VARSIZE_ANY(attptr) \
    ) \
    : \
    ( \
        AssertMacro((attlen) == -2), \
        (cur_offset) + (strlen((const char *) (attptr)) + 1) \
    )) \
)
 
#ifndef FRONTEND
/*
 * store_att_byval is a partial inverse of fetch_att: store a given Datum
 * value into a tuple data area at the specified address.  However, it only
 * handles the byval case, because in typical usage the caller needs to
 * distinguish by-val and by-ref cases anyway, and so a do-it-all function
 * wouldn't be convenient.
 */
static inline void
store_att_byval(void *T, Datum newdatum, int attlen)
{
    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;
        case sizeof(int64):
            *(int64 *) T = DatumGetInt64(newdatum);
            break;
        default:
            elog(ERROR, "unsupported byval length: %d", attlen);
    }
}
#endif                          /* FRONTEND */
 
#endif                          /* 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((const char *) (attptr)) + 1) \
    )) \
)

Definition at line 180 of file tupmacs.h.

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

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 82 of file tupmacs.h.

                             : \
	att_align_nominal(cur_offset, attalign) \
)

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 145 of file tupmacs.h.

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

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 113 of file tupmacs.h.

                             : \
	att_align_nominal(cur_offset, attalign) \
)

att_datum_alignby

#define att_datum_alignby	(		cur_offset,
			attalignby,
			attlen,
			attdatum
	)

Value:

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

Definition at line 93 of file tupmacs.h.

                             : \
	TYPEALIGN(attalignby, cur_offset))

att_nominal_alignby

#define att_nominal_alignby	(		cur_offset,
			attalignby
	)		TYPEALIGN(attalignby, cur_offset)

Definition at line 160 of file tupmacs.h.

att_pointer_alignby

#define att_pointer_alignby	(		cur_offset,
			attalignby,
			attlen,
			attptr
	)

Value:

    ( \
    ((attlen) == -1 && VARATT_NOT_PAD_BYTE(attptr)) ? \
    (uintptr_t) (cur_offset) : \
    TYPEALIGN(attalignby, cur_offset))

Definition at line 124 of file tupmacs.h.

                             : \
	TYPEALIGN(attalignby, cur_offset))

fetchatt

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

Definition at line 44 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)));
}

References fb().

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_internal(), and tuple_data_split_internal().

fetch_att()

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

inlinestatic

Definition at line 50 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));
            case sizeof(int64):
                return Int64GetDatum(*((const int64 *) T));
            default:
                elog(ERROR, "unsupported byval length: %d", attlen);
                return 0;
        }
    }
    else
        return PointerGetDatum(T);
}

References attbyval, attlen, CharGetDatum(), elog, ERROR, fb(), Int16GetDatum(), Int32GetDatum(), Int64GetDatum(), 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 206 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;
        case sizeof(int64):
            *(int64 *) T = DatumGetInt64(newdatum);
            break;
        default:
            elog(ERROR, "unsupported byval length: %d", attlen);
    }
}

References attlen, DatumGetChar(), DatumGetInt16(), DatumGetInt32(), DatumGetInt64(), elog, ERROR, fb(), and T.

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