Function exec_stmt_if

src/pl/plpgsql/src/pl_exec.c:2469–2492

---------- * exec_stmt_if Evaluate a bool expression and * execute the true or false body * conditionally. * ---------- */

 * ----------
 */
static int
exec_stmt_if(PLpgSQL_execstate *estate, PLpgSQL_stmt_if *stmt)
{
	bool		value;
	bool		isnull;
	ListCell   *lc;

	value = exec_eval_boolean(estate, stmt->cond, &isnull);
	exec_eval_cleanup(estate);
	if (!isnull && value)
		return exec_stmts(estate, stmt->then_body);

	foreach(lc, stmt->elsif_list)
	{
		PLpgSQL_if_elsif *elif = (PLpgSQL_if_elsif *) lfirst(lc);

		value = exec_eval_boolean(estate, elif->cond, &isnull);
		exec_eval_cleanup(estate);
		if (!isnull && value)
			return exec_stmts(estate, elif->stmts);
	}

	return exec_stmts(estate, stmt->else_body);
}


/*-----------