Add a u5 type and a [u8; 20]

[ldk-c-bindings] / lightning-c-bindings / src / c_types / mod.rs

diff --git a/lightning-c-bindings/src/c_types/mod.rs b/lightning-c-bindings/src/c_types/mod.rs
index 14e37229cf497a44140eee30731b2e6a95d52390..2248ec2befbfec64e08fd43484cbac004c3e02e5 100644 (file)
--- a/lightning-c-bindings/src/c_types/mod.rs
+++ b/lightning-c-bindings/src/c_types/mod.rs
@@ -3,16 +3,29 @@
 /// Auto-generated C-mapped types for templated containers
 pub mod derived;
 
-use bitcoin::Script as BitcoinScript;
 use bitcoin::Transaction as BitcoinTransaction;
 use bitcoin::hashes::Hash;
 use bitcoin::secp256k1::key::PublicKey as SecpPublicKey;
 use bitcoin::secp256k1::key::SecretKey as SecpSecretKey;
 use bitcoin::secp256k1::Signature as SecpSignature;
 use bitcoin::secp256k1::Error as SecpError;
+use bitcoin::bech32;
 
 use std::convert::TryInto; // Bindings need at least rustc 1.34
 
+/// Integer in the range `0..32`
+#[derive(PartialEq, Eq, Copy, Clone)]
+#[allow(non_camel_case_types)]
+#[repr(C)]
+pub struct u5(u8);
+
+impl From<bech32::u5> for u5 {
+       fn from(o: bech32::u5) -> Self { Self(o.to_u8()) }
+}
+impl Into<bech32::u5> for u5 {
+       fn into(self) -> bech32::u5 { bech32::u5::try_from_u8(self.0).expect("u5 objects must be in the range 0..32") }
+}
+
 #[derive(Clone)]
 #[repr(C)]
 /// Represents a valid secp256k1 public key serialized in "compressed form" as a 33 byte array.
@@ -188,9 +201,10 @@ impl Transaction {
                if self.datalen == 0 { panic!("0-length buffer can never represent a valid Transaction"); }
                ::bitcoin::consensus::encode::deserialize(unsafe { std::slice::from_raw_parts(self.data, self.datalen) }).unwrap()
        }
-       pub(crate) fn from_vec(v: Vec<u8>) -> Self {
-               let datalen = v.len();
-               let data = Box::into_raw(v.into_boxed_slice());
+       pub(crate) fn from_bitcoin(btc: &BitcoinTransaction) -> Self {
+               let vec = ::bitcoin::consensus::encode::serialize(btc);
+               let datalen = vec.len();
+               let data = Box::into_raw(vec.into_boxed_slice());
                Self {
                        data: unsafe { (*data).as_mut_ptr() },
                        datalen,
@@ -296,6 +310,10 @@ pub struct TenBytes { /** The ten bytes */ pub data: [u8; 10], }
 #[repr(C)]
 /// A 16-byte byte array.
 pub struct SixteenBytes { /** The sixteen bytes */ pub data: [u8; 16], }
+#[derive(Clone)]
+#[repr(C)]
+/// A 20-byte byte array.
+pub struct TwentyBytes { /** The twenty bytes */ pub data: [u8; 20], }
 
 pub(crate) struct VecWriter(pub Vec<u8>);
 impl lightning::util::ser::Writer for VecWriter {