Add a bindings constructor for `lightning-invoice`'s `Sha256` wrapper

diff --git a/lightning-invoice/src/lib.rs b/lightning-invoice/src/lib.rs
index 0923fcc1756d4fd05305ab53b2653d08539949f9..101051b5e7f23509325d42301a424d3045fc7589 100644 (file)
--- a/lightning-invoice/src/lib.rs
+++ b/lightning-invoice/src/lib.rs
@@ -455,6 +455,15 @@ pub enum TaggedField {
 pub struct Sha256(/// This is not exported to bindings users as the native hash types are not currently mapped
        pub sha256::Hash);
 
+impl Sha256 {
+       /// Constructs a new [`Sha256`] from the given bytes, which are assumed to be the output of a
+       /// single sha256 hash.
+       #[cfg(c_bindings)]
+       pub fn from_bytes(bytes: &[u8; 32]) -> Self {
+               Self(sha256::Hash::from_slice(bytes).expect("from_slice only fails if len is not 32"))
+       }
+}
+
 /// Description string
 ///
 /// # Invariants