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Support type modifiers for user-defined types, and pull most knowledge

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about typmod representation for standard types out into type-specific
typmod I/O functions.  Teodor Sigaev, with some editorialization by
Tom Lane.
This commit is contained in:
Tom Lane
2006-12-30 21:21:56 +00:00
parent 24b1f14eae
commit 5725b9d9af
47 changed files with 1628 additions and 685 deletions
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30
src/backend/utils/adt/arrayutils.c
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@ -8,13 +8,14 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/arrayutils.c,v 1.21 2006/03/05 15:58:41 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/arrayutils.c,v 1.22 2006/12/30 21:21:54 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "catalog/pg_type.h"
#include "utils/array.h"
#include "utils/memutils.h"
@ -188,3 +189,30 @@ mda_next_tuple(int n, int *curr, const int *span)
return -1;
}
/*
* ArrayGetTypmods: verify that argument is a 1-D integer array,
* return its length and a pointer to the first contained integer.
*/
int32 *
ArrayGetTypmods(ArrayType *arr, int *n)
{
if (ARR_ELEMTYPE(arr) != INT4OID)
ereport(ERROR,
(errcode(ERRCODE_ARRAY_ELEMENT_ERROR),
errmsg("typmod array must be type integer[]")));
if (ARR_NDIM(arr) != 1)
ereport(ERROR,
(errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
errmsg("typmod array must be one-dimensional")));
if (ARR_HASNULL(arr))
ereport(ERROR,
(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
errmsg("typmod array must not contain nulls")));
*n = ArrayGetNItems(ARR_NDIM(arr), ARR_DIMS(arr));
return (int32 *) ARR_DATA_PTR(arr);
}