Builder for creating invoices for offers

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

diff --git a/lightning/src/util/ser.rs b/lightning/src/util/ser.rs
index 84d1a2e084feb65e1472969875a586c81ccd08e5..ebe20677cda310bb2fea4934ecb08d5fe4db8c97 100644 (file)
--- a/lightning/src/util/ser.rs
+++ b/lightning/src/util/ser.rs
@@ -624,6 +624,26 @@ impl<'a, T> From<&'a Vec<T>> for WithoutLength<&'a Vec<T>> {
        fn from(v: &'a Vec<T>) -> Self { Self(v) }
 }
 
+#[derive(Debug)]
+pub(crate) struct Iterable<'a, I: Iterator<Item = &'a T> + Clone, T: 'a>(pub I);
+
+impl<'a, I: Iterator<Item = &'a T> + Clone, T: 'a + Writeable> Writeable for Iterable<'a, I, T> {
+       #[inline]
+       fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+               for ref v in self.0.clone() {
+                       v.write(writer)?;
+               }
+               Ok(())
+       }
+}
+
+#[cfg(test)]
+impl<'a, I: Iterator<Item = &'a T> + Clone, T: 'a + PartialEq> PartialEq for Iterable<'a, I, T> {
+       fn eq(&self, other: &Self) -> bool {
+               self.0.clone().collect::<Vec<_>>() == other.0.clone().collect::<Vec<_>>()
+       }
+}
+
 macro_rules! impl_for_map {
        ($ty: ident, $keybound: ident, $constr: expr) => {
                impl<K, V> Writeable for $ty<K, V>