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Replace direct assignments to VARATT_SIZEP(x) with SET_VARSIZE(x, len).

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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
This commit is contained in:
Tom Lane
2007-02-27 23:48:10 +00:00
parent 0459b591fc
commit 234a02b2a8
87 changed files with 483 additions and 498 deletions
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36
src/backend/utils/adt/numeric.c
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@ -14,7 +14,7 @@
* Copyright (c) 1998-2007, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/numeric.c,v 1.100 2007/02/17 00:55:57 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/numeric.c,v 1.101 2007/02/27 23:48:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -230,7 +230,7 @@ static void dump_var(const char *str, NumericVar *var);
#define NUMERIC_DIGITS(num) ((NumericDigit *)(num)->n_data)
#define NUMERIC_NDIGITS(num) \
(((num)->varlen - NUMERIC_HDRSZ) / sizeof(NumericDigit))
((VARSIZE(num) - NUMERIC_HDRSZ) / sizeof(NumericDigit))
static void alloc_var(NumericVar *var, int ndigits);
static void free_var(NumericVar *var);
@ -494,8 +494,8 @@ numeric(PG_FUNCTION_ARGS)
*/
if (typmod < (int32) (VARHDRSZ))
{
new = (Numeric) palloc(num->varlen);
memcpy(new, num, num->varlen);
new = (Numeric) palloc(VARSIZE(num));
memcpy(new, num, VARSIZE(num));
PG_RETURN_NUMERIC(new);
}
@ -515,8 +515,8 @@ numeric(PG_FUNCTION_ARGS)
ddigits = (num->n_weight + 1) * DEC_DIGITS;
if (ddigits <= maxdigits && scale >= NUMERIC_DSCALE(num))
{
new = (Numeric) palloc(num->varlen);
memcpy(new, num, num->varlen);
new = (Numeric) palloc(VARSIZE(num));
memcpy(new, num, VARSIZE(num));
new->n_sign_dscale = NUMERIC_SIGN(new) |
((uint16) scale & NUMERIC_DSCALE_MASK);
PG_RETURN_NUMERIC(new);
@ -621,8 +621,8 @@ numeric_abs(PG_FUNCTION_ARGS)
/*
* Do it the easy way directly on the packed format
*/
res = (Numeric) palloc(num->varlen);
memcpy(res, num, num->varlen);
res = (Numeric) palloc(VARSIZE(num));
memcpy(res, num, VARSIZE(num));
res->n_sign_dscale = NUMERIC_POS | NUMERIC_DSCALE(num);
@ -645,15 +645,15 @@ numeric_uminus(PG_FUNCTION_ARGS)
/*
* Do it the easy way directly on the packed format
*/
res = (Numeric) palloc(num->varlen);
memcpy(res, num, num->varlen);
res = (Numeric) palloc(VARSIZE(num));
memcpy(res, num, VARSIZE(num));
/*
* The packed format is known to be totally zero digit trimmed always. So
* we can identify a ZERO by the fact that there are no digits at all. Do
* nothing to a zero.
*/
if (num->varlen != NUMERIC_HDRSZ)
if (VARSIZE(num) != NUMERIC_HDRSZ)
{
/* Else, flip the sign */
if (NUMERIC_SIGN(num) == NUMERIC_POS)
@ -672,8 +672,8 @@ numeric_uplus(PG_FUNCTION_ARGS)
Numeric num = PG_GETARG_NUMERIC(0);
Numeric res;
res = (Numeric) palloc(num->varlen);
memcpy(res, num, num->varlen);
res = (Numeric) palloc(VARSIZE(num));
memcpy(res, num, VARSIZE(num));
PG_RETURN_NUMERIC(res);
}
@ -703,7 +703,7 @@ numeric_sign(PG_FUNCTION_ARGS)
* The packed format is known to be totally zero digit trimmed always. So
* we can identify a ZERO by the fact that there are no digits at all.
*/
if (num->varlen == NUMERIC_HDRSZ)
if (VARSIZE(num) == NUMERIC_HDRSZ)
set_var_from_var(&const_zero, &result);
else
{
@ -2105,7 +2105,7 @@ numeric_text(PG_FUNCTION_ARGS)
result = (text *) palloc(VARHDRSZ + len);
VARATT_SIZEP(result) = len + VARHDRSZ;
SET_VARSIZE(result, VARHDRSZ + len);
memcpy(VARDATA(result), s, len);
pfree(s);
@ -2301,7 +2301,7 @@ numeric_avg(PG_FUNCTION_ARGS)
/* SQL92 defines AVG of no values to be NULL */
/* N is zero iff no digits (cf. numeric_uminus) */
if (N->varlen == NUMERIC_HDRSZ)
if (VARSIZE(N) == NUMERIC_HDRSZ)
PG_RETURN_NULL();
PG_RETURN_DATUM(DirectFunctionCall2(numeric_div,
@ -3232,7 +3232,7 @@ make_result(NumericVar *var)
{
result = (Numeric) palloc(NUMERIC_HDRSZ);
result->varlen = NUMERIC_HDRSZ;
SET_VARSIZE(result, NUMERIC_HDRSZ);
result->n_weight = 0;
result->n_sign_dscale = NUMERIC_NAN;
@ -3263,7 +3263,7 @@ make_result(NumericVar *var)
/* Build the result */
len = NUMERIC_HDRSZ + n * sizeof(NumericDigit);
result = (Numeric) palloc(len);
result->varlen = len;
SET_VARSIZE(result, len);
result->n_weight = weight;
result->n_sign_dscale = sign | (var->dscale & NUMERIC_DSCALE_MASK);