Function payment_is_finished

plugins/libplugin-pay.c:1771–1796

A payment is finished if a) it is in a final state, of b) it's in a * child-spawning state and all of its children are in a final state. */

/* A payment is finished if a) it is in a final state, of b) it's in a
 * child-spawning state and all of its children are in a final state. */
static bool payment_is_finished(const struct payment *p)
{
top:
	if (p->step == PAYMENT_STEP_FAILED || p->step == PAYMENT_STEP_SUCCESS || p->abort)
		return true;
	else if (p->step == PAYMENT_STEP_SPLIT || p->step == PAYMENT_STEP_RETRY) {
		size_t num_children = tal_count(p->children);

		/* Retry case will almost always have just one child, so avoid
		 * the overhead of pushing and popping off the C stack and
		 * tail-recurse manually.  */
		if (num_children == 1) {
			p = p->children[0];
			goto top;
		}

		for (size_t i = 0; i < num_children; i++)
			/* In other words: if any child is unfinished,
			 * we are unfinished.  */
			if (!payment_is_finished(p->children[i]))
				return false;
		return true;
	} else {
		return false;
	}
}

static enum payment_step payment_aggregate_states(struct payment *p)
{