Function payment_continue

plugins/renepay/mods.c:27–72

Advance the payment virtual machine */

/* Advance the payment virtual machine */
struct command_result *payment_continue(struct payment *payment)
{
	assert(payment->exec_state != INVALID_STATE);
	void *op = payment_virtual_program[payment->exec_state++];

	if (op == OP_NULL) {
		plugin_err(pay_plugin->plugin,
			   "payment_continue reached the end of the virtual "
			   "machine execution.");
	} else if (op == OP_CALL) {
		const struct payment_modifier *mod =
		    (const struct payment_modifier *)
			payment_virtual_program[payment->exec_state++];

		if (mod == NULL)
			plugin_err(pay_plugin->plugin,
				   "payment_continue expected payment_modifier "
				   "but NULL found");

		plugin_log(pay_plugin->plugin, LOG_TRACE, "Calling modifier %s",
			   mod->name);
		return mod->step_cb(payment);
	} else if (op == OP_IF) {
		const struct payment_condition *cond =
		    (const struct payment_condition *)
			payment_virtual_program[payment->exec_state++];

		if (cond == NULL)
			plugin_err(pay_plugin->plugin,
				   "payment_continue expected pointer to "
				   "condition but NULL found");

		plugin_log(pay_plugin->plugin, LOG_TRACE,
			   "Calling payment condition %s", cond->name);

		const u64 position_iftrue =
			(intptr_t)payment_virtual_program[payment->exec_state++];

		if (cond->condition_cb(payment))
			payment->exec_state = position_iftrue;

		return payment_continue(payment);
	}
	plugin_err(pay_plugin->plugin, "payment_continue op code not defined");
	return NULL;
}


/* Generic handler for RPC failures that should end up failing the payment. */