Merge pull request #1503 from valentinewallace/2022-05-onion-msgs

[rust-lightning] / lightning / src / util / ser.rs

diff --git a/lightning/src/util/ser.rs b/lightning/src/util/ser.rs
index 5b1a86a6a95f27a276f1dc221bd705f57fbf8ed4..ecf85839a5a8e19ebfed3f8e87b8b5832427e4a5 100644 (file)
--- a/lightning/src/util/ser.rs
+++ b/lightning/src/util/ser.rs
@@ -244,6 +244,14 @@ pub(crate) trait LengthReadableArgs<P> where Self: Sized
        fn read<R: LengthRead>(reader: &mut R, params: P) -> Result<Self, DecodeError>;
 }
 
+/// A trait that various higher-level rust-lightning types implement allowing them to be read in
+/// from a Read, requiring the implementer to provide the total length of the read.
+pub(crate) trait LengthReadable where Self: Sized
+{
+       /// Reads a Self in from the given LengthRead
+       fn read<R: LengthRead>(reader: &mut R) -> Result<Self, DecodeError>;
+}
+
 /// A trait that various rust-lightning types implement allowing them to (maybe) be read in from a Read
 ///
 /// (C-not exported) as we only export serialization to/from byte arrays instead