ServiceClient<>::getCallIDByIndex()

libuavcan/include/uavcan/node/service_client.hpp

@@ -341,6 +341,12 @@ public:
      */
     bool hasPendingCallToServer(NodeID server_node_id) const;
 
+    /**
+     * This method allows to traverse pending calls. If the index is out of range, an invalid call ID will be returned.
+     * Warning: average complexity is O(index); worst case complexity is O(size).
+     */
+    ServiceCallID getCallIDByIndex(unsigned index) const;
+
     /**
      * Service response callback must be set prior service call.
      */
@@ -556,6 +562,13 @@ bool ServiceClient<DataType_, Callback_, NumStaticCalls_>::hasPendingCallToServe
     return NULL != call_registry_.find(ServerSearchPredicate(server_node_id));
 }
 
+template <typename DataType_, typename Callback_, unsigned NumStaticCalls_>
+ServiceCallID ServiceClient<DataType_, Callback_, NumStaticCalls_>::getCallIDByIndex(unsigned index) const
+{
+    const CallState* const id = call_registry_.getByIndex(index);
+    return (id == NULL) ? ServiceCallID() : id->getCallID();
+}
+
 }
 
 #endif // UAVCAN_NODE_SERVICE_CLIENT_HPP_INCLUDED