Lift std check to function definition

[rust-lightning] / lightning-rapid-gossip-sync / src / lib.rs

diff --git a/lightning-rapid-gossip-sync/src/lib.rs b/lightning-rapid-gossip-sync/src/lib.rs
index da59b37b10a673c9420b9d2232c81758f0811f59..c8f140cc18955d8225bbf300fcda2aee6ddae267 100644 (file)
--- a/lightning-rapid-gossip-sync/src/lib.rs
+++ b/lightning-rapid-gossip-sync/src/lib.rs
@@ -49,14 +49,17 @@
 //! # use lightning::util::logger::{Logger, Record};
 //! # struct FakeLogger {}
 //! # impl Logger for FakeLogger {
-//! #     fn log(&self, record: &Record) { unimplemented!() }
+//! #     fn log(&self, record: &Record) { }
 //! # }
 //! # let logger = FakeLogger {};
 //!
 //! let network_graph = NetworkGraph::new(Network::Bitcoin, &logger);
 //! let rapid_sync = RapidGossipSync::new(&network_graph, &logger);
 //! let snapshot_contents: &[u8] = &[0; 0];
-//! let new_last_sync_timestamp_result = rapid_sync.update_network_graph(snapshot_contents);
+//! // In no-std you need to provide the current time in unix epoch seconds
+//! // otherwise you can use update_network_graph
+//! let current_time_unix = 0;
+//! let new_last_sync_timestamp_result = rapid_sync.update_network_graph_no_std(snapshot_contents, Some(current_time_unix));
 //! ```
 
 #![cfg_attr(all(not(feature = "std"), not(test)), no_std)]
@@ -128,6 +131,7 @@ impl<NG: Deref<Target=NetworkGraph<L>>, L: Deref> RapidGossipSync<NG, L> where L
        /// Returns the last sync timestamp to be used the next time rapid sync data is queried.
        ///
        /// `update_data`: `&[u8]` binary stream that comprises the update data
+       #[cfg(feature = "std")]
        pub fn update_network_graph(&self, update_data: &[u8]) -> Result<u32, GraphSyncError> {
                let mut read_cursor = io::Cursor::new(update_data);
                self.update_network_graph_from_byte_stream(&mut read_cursor)