mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-24 04:07:18 +02:00
Get rid of VARATT_SIZE and VARATT_DATA, which were simply redundant with VARSIZE and VARDATA, and as a consequence almost no code was using the longer names. Rename the length fields of struct varlena and various derived structures to catch anyplace that was accessing them directly; and clean up various places so caught. In itself this patch doesn't change any behavior at all, but it is necessary infrastructure if we hope to play any games with the representation of varlena headers. Greg Stark and Tom Lane
393 lines
5.8 KiB
C
393 lines
5.8 KiB
C
#include "_int.h"
|
|
|
|
|
|
bool
|
|
inner_int_contains(ArrayType *a, ArrayType *b)
|
|
{
|
|
int na,
|
|
nb;
|
|
int i,
|
|
j,
|
|
n;
|
|
int *da,
|
|
*db;
|
|
|
|
CHECKARRVALID(a);
|
|
CHECKARRVALID(b);
|
|
|
|
if (ARRISVOID(a) || ARRISVOID(b))
|
|
return FALSE;
|
|
|
|
na = ARRNELEMS(a);
|
|
nb = ARRNELEMS(b);
|
|
da = ARRPTR(a);
|
|
db = ARRPTR(b);
|
|
|
|
i = j = n = 0;
|
|
while (i < na && j < nb)
|
|
if (da[i] < db[j])
|
|
i++;
|
|
else if (da[i] == db[j])
|
|
{
|
|
n++;
|
|
i++;
|
|
j++;
|
|
}
|
|
else
|
|
break;
|
|
|
|
return (n == nb) ? TRUE : FALSE;
|
|
}
|
|
|
|
bool
|
|
inner_int_overlap(ArrayType *a, ArrayType *b)
|
|
{
|
|
int na,
|
|
nb;
|
|
int i,
|
|
j;
|
|
int *da,
|
|
*db;
|
|
|
|
CHECKARRVALID(a);
|
|
CHECKARRVALID(b);
|
|
|
|
if (ARRISVOID(a) || ARRISVOID(b))
|
|
return FALSE;
|
|
|
|
na = ARRNELEMS(a);
|
|
nb = ARRNELEMS(b);
|
|
da = ARRPTR(a);
|
|
db = ARRPTR(b);
|
|
|
|
i = j = 0;
|
|
while (i < na && j < nb)
|
|
if (da[i] < db[j])
|
|
i++;
|
|
else if (da[i] == db[j])
|
|
return TRUE;
|
|
else
|
|
j++;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
ArrayType *
|
|
inner_int_union(ArrayType *a, ArrayType *b)
|
|
{
|
|
ArrayType *r = NULL;
|
|
|
|
CHECKARRVALID(a);
|
|
CHECKARRVALID(b);
|
|
|
|
if (ARRISVOID(a) && ARRISVOID(b))
|
|
return new_intArrayType(0);
|
|
if (ARRISVOID(a))
|
|
r = copy_intArrayType(b);
|
|
if (ARRISVOID(b))
|
|
r = copy_intArrayType(a);
|
|
|
|
if (!r)
|
|
{
|
|
int na = ARRNELEMS(a),
|
|
nb = ARRNELEMS(b);
|
|
int *da = ARRPTR(a),
|
|
*db = ARRPTR(b);
|
|
int i,
|
|
j,
|
|
*dr;
|
|
|
|
r = new_intArrayType(na + nb);
|
|
dr = ARRPTR(r);
|
|
|
|
/* union */
|
|
i = j = 0;
|
|
while (i < na && j < nb)
|
|
{
|
|
if (da[i] == db[j])
|
|
{
|
|
*dr++ = da[i++];
|
|
j++;
|
|
}
|
|
else if (da[i] < db[j])
|
|
*dr++ = da[i++];
|
|
else
|
|
*dr++ = db[j++];
|
|
}
|
|
|
|
while (i < na)
|
|
*dr++ = da[i++];
|
|
while (j < nb)
|
|
*dr++ = db[j++];
|
|
|
|
r = resize_intArrayType(r, dr - ARRPTR(r));
|
|
}
|
|
|
|
if (ARRNELEMS(r) > 1)
|
|
r = _int_unique(r);
|
|
|
|
return r;
|
|
}
|
|
|
|
ArrayType *
|
|
inner_int_inter(ArrayType *a, ArrayType *b)
|
|
{
|
|
ArrayType *r;
|
|
int na,
|
|
nb;
|
|
int *da,
|
|
*db,
|
|
*dr;
|
|
int i,
|
|
j;
|
|
|
|
CHECKARRVALID(a);
|
|
CHECKARRVALID(b);
|
|
|
|
if (ARRISVOID(a) || ARRISVOID(b))
|
|
return new_intArrayType(0);
|
|
|
|
na = ARRNELEMS(a);
|
|
nb = ARRNELEMS(b);
|
|
da = ARRPTR(a);
|
|
db = ARRPTR(b);
|
|
r = new_intArrayType(Min(na, nb));
|
|
dr = ARRPTR(r);
|
|
|
|
i = j = 0;
|
|
while (i < na && j < nb)
|
|
if (da[i] < db[j])
|
|
i++;
|
|
else if (da[i] == db[j])
|
|
{
|
|
if (i + j == 0 || (i + j > 0 && *(dr - 1) != db[j]))
|
|
*dr++ = db[j];
|
|
i++;
|
|
j++;
|
|
}
|
|
else
|
|
j++;
|
|
|
|
if ((dr - ARRPTR(r)) == 0)
|
|
{
|
|
pfree(r);
|
|
return new_intArrayType(0);
|
|
}
|
|
else
|
|
return resize_intArrayType(r, dr - ARRPTR(r));
|
|
}
|
|
|
|
void
|
|
rt__int_size(ArrayType *a, float *size)
|
|
{
|
|
*size = (float) ARRNELEMS(a);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* len >= 2 */
|
|
bool
|
|
isort(int4 *a, int len)
|
|
{
|
|
int4 tmp,
|
|
index;
|
|
int4 *cur,
|
|
*end;
|
|
bool r = FALSE;
|
|
|
|
end = a + len;
|
|
do
|
|
{
|
|
index = 0;
|
|
cur = a + 1;
|
|
while (cur < end)
|
|
{
|
|
if (*(cur - 1) > *cur)
|
|
{
|
|
tmp = *(cur - 1);
|
|
*(cur - 1) = *cur;
|
|
*cur = tmp;
|
|
index = 1;
|
|
}
|
|
else if (!r && *(cur - 1) == *cur)
|
|
r = TRUE;
|
|
cur++;
|
|
}
|
|
} while (index);
|
|
return r;
|
|
}
|
|
|
|
ArrayType *
|
|
new_intArrayType(int num)
|
|
{
|
|
ArrayType *r;
|
|
int nbytes = ARR_OVERHEAD_NONULLS(NDIM) + sizeof(int) * num;
|
|
|
|
r = (ArrayType *) palloc0(nbytes);
|
|
|
|
SET_VARSIZE(r, nbytes);
|
|
ARR_NDIM(r) = NDIM;
|
|
r->dataoffset = 0; /* marker for no null bitmap */
|
|
ARR_ELEMTYPE(r) = INT4OID;
|
|
*((int *) ARR_DIMS(r)) = num;
|
|
*((int *) ARR_LBOUND(r)) = 1;
|
|
|
|
return r;
|
|
}
|
|
|
|
ArrayType *
|
|
resize_intArrayType(ArrayType *a, int num)
|
|
{
|
|
int nbytes = ARR_OVERHEAD_NONULLS(NDIM) + sizeof(int) * num;
|
|
|
|
if (num == ARRNELEMS(a))
|
|
return a;
|
|
|
|
a = (ArrayType *) repalloc(a, nbytes);
|
|
|
|
SET_VARSIZE(a, nbytes);
|
|
*((int *) ARR_DIMS(a)) = num;
|
|
return a;
|
|
}
|
|
|
|
ArrayType *
|
|
copy_intArrayType(ArrayType *a)
|
|
{
|
|
ArrayType *r;
|
|
|
|
r = new_intArrayType(ARRNELEMS(a));
|
|
memmove(r, a, VARSIZE(r));
|
|
return r;
|
|
}
|
|
|
|
/* num for compressed key */
|
|
int
|
|
internal_size(int *a, int len)
|
|
{
|
|
int i,
|
|
size = 0;
|
|
|
|
for (i = 0; i < len; i += 2)
|
|
if (!i || a[i] != a[i - 1]) /* do not count repeated range */
|
|
size += a[i + 1] - a[i] + 1;
|
|
|
|
return size;
|
|
}
|
|
|
|
/* r is sorted and size of r > 1 */
|
|
ArrayType *
|
|
_int_unique(ArrayType *r)
|
|
{
|
|
int *tmp,
|
|
*dr,
|
|
*data;
|
|
int num = ARRNELEMS(r);
|
|
|
|
CHECKARRVALID(r);
|
|
|
|
if (num < 2)
|
|
return r;
|
|
|
|
data = tmp = dr = ARRPTR(r);
|
|
while (tmp - data < num)
|
|
if (*tmp != *dr)
|
|
*(++dr) = *tmp++;
|
|
else
|
|
tmp++;
|
|
return resize_intArrayType(r, dr + 1 - ARRPTR(r));
|
|
}
|
|
|
|
void
|
|
gensign(BITVEC sign, int *a, int len)
|
|
{
|
|
int i;
|
|
|
|
/* we assume that the sign vector is previously zeroed */
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
HASH(sign, *a);
|
|
a++;
|
|
}
|
|
}
|
|
|
|
int32
|
|
intarray_match_first(ArrayType *a, int32 elem)
|
|
{
|
|
int32 *aa,
|
|
c,
|
|
i;
|
|
|
|
CHECKARRVALID(a);
|
|
if (ARRISVOID(a))
|
|
return 0;
|
|
c = ARRNELEMS(a);
|
|
aa = ARRPTR(a);
|
|
for (i = 0; i < c; i++)
|
|
if (aa[i] == elem)
|
|
return (i + 1);
|
|
return 0;
|
|
}
|
|
|
|
ArrayType *
|
|
intarray_add_elem(ArrayType *a, int32 elem)
|
|
{
|
|
ArrayType *result;
|
|
int32 *r;
|
|
int32 c;
|
|
|
|
CHECKARRVALID(a);
|
|
c = (ARRISVOID(a)) ? 0 : ARRNELEMS(a);
|
|
result = new_intArrayType(c + 1);
|
|
r = ARRPTR(result);
|
|
if (c > 0)
|
|
memcpy(r, ARRPTR(a), c * sizeof(int32));
|
|
r[c] = elem;
|
|
return result;
|
|
}
|
|
|
|
ArrayType *
|
|
intarray_concat_arrays(ArrayType *a, ArrayType *b)
|
|
{
|
|
ArrayType *result;
|
|
int32 ac = (ARRISVOID(a)) ? 0 : ARRNELEMS(a);
|
|
int32 bc = (ARRISVOID(b)) ? 0 : ARRNELEMS(b);
|
|
|
|
CHECKARRVALID(a);
|
|
CHECKARRVALID(b);
|
|
result = new_intArrayType(ac + bc);
|
|
if (ac)
|
|
memcpy(ARRPTR(result), ARRPTR(a), ac * sizeof(int32));
|
|
if (bc)
|
|
memcpy(ARRPTR(result) + ac, ARRPTR(b), bc * sizeof(int32));
|
|
return result;
|
|
}
|
|
|
|
ArrayType *
|
|
int_to_intset(int32 n)
|
|
{
|
|
ArrayType *result;
|
|
int32 *aa;
|
|
|
|
result = new_intArrayType(1);
|
|
aa = ARRPTR(result);
|
|
aa[0] = n;
|
|
return result;
|
|
}
|
|
|
|
int
|
|
compASC(const void *a, const void *b)
|
|
{
|
|
if (*(int4 *) a == *(int4 *) b)
|
|
return 0;
|
|
return (*(int4 *) a > *(int4 *) b) ? 1 : -1;
|
|
}
|
|
|
|
int
|
|
compDESC(const void *a, const void *b)
|
|
{
|
|
if (*(int4 *) a == *(int4 *) b)
|
|
return 0;
|
|
return (*(int4 *) a < *(int4 *) b) ? 1 : -1;
|
|
}
|