Function conditional_stack_push

src/fe_utils/conditional.c:40–50

* Create a new conditional branch. */

 * Create a new conditional branch.
 */
void
conditional_stack_push(ConditionalStack cstack, ifState new_state)
{
	IfStackElem *p = (IfStackElem *) pg_malloc(sizeof(IfStackElem));

	p->if_state = new_state;
	p->query_len = -1;
	p->paren_depth = -1;
	p->next = cstack->head;
	cstack->head = p;
}

/*
 * Destroy the topmost conditional branch.