Function parser_errposition

src/backend/parser/parse_node.c:110–125

* parser_errposition * Report a parse-analysis-time cursor position, if possible. * * This is expected to be used within an ereport() call. The return value * is a dummy (always 0, in fact). * * The locations stored in raw parsetrees are byte offsets into the source * string. We have to convert them to 1-based character indexes for reporting * to clients. (We do things this way to avoi

 * expensive than storing token offsets.)
 */
void
parser_errposition(ParseState *pstate, int location)
{
	int			pos;

	/* No-op if location was not provided */
	if (location < 0)
		return;
	/* Can't do anything if source text is not available */
	if (pstate == NULL || pstate->p_sourcetext == NULL)
		return;
	/* Convert offset to character number */
	pos = pg_mbstrlen_with_len(pstate->p_sourcetext, location) + 1;
	/* And pass it to the ereport mechanism */
	errposition(pos);
}


/*