feat!: implement reconstruct for leopard ffe8 (#5)

Co-authored-by: Mikołaj Florkiewicz <mikolaj@florkiewicz.me>

.github/workflows/ci.yml

@@ -12,6 +12,11 @@ jobs:
     steps:
     - uses: actions/checkout@v1
 
+    - name: Install Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.22.x'
+
     - name: Install wasm Rust
       uses: actions-rs/toolchain@v1
       with:
@@ -31,6 +36,11 @@ jobs:
     steps:
     - uses: actions/checkout@v1
 
+    - name: Install Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.22.x'
+
     - name: Run rustdoc check
       env:
         RUSTDOCFLAGS: -D warnings
@@ -50,6 +60,11 @@ jobs:
     steps:
     - uses: actions/checkout@v1
 
+    - name: Install Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.22.x'
+
     - name: Set up cargo cache
       uses: actions/cache@v3
       with:
@@ -75,6 +90,11 @@ jobs:
     - name: Checkout sources
       uses: actions/checkout@v3
 
+    - name: Install Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.22.x'
+
     - name: Install toolchain
       uses: dtolnay/rust-toolchain@nightly
 

Cargo.toml

@@ -17,8 +17,5 @@ test-strategy = "0.3"
 [workspace]
 members = ["go-leopard"]
 
-[profile.test.package.proptest]
-opt-level = 3
-
-[profile.test.package.rand_chacha]
+[profile.test]
 opt-level = 3

README.md

@@ -20,6 +20,6 @@ The 8-bit implementation should be used with up to 256 total shards and 16-bit w
 shards are needed.
 
 - [x] Encoding parity shards using 8-bit leopard algorithm
-- [ ] Reconstructing shards using 8-bit leopard algorithm
+- [x] Reconstructing shards using 8-bit leopard algorithm
 - [ ] Encoding parity shards using 16-bit leopard algorithm
 - [ ] Reconstructing shards using 16-bit leopard algorithm

go-leopard/go/go.mod

@@ -1,6 +1,6 @@
 module github.com/eigerco/leopard-codec
 
-go 1.23
+go 1.22.0
 
 require (
 	github.com/klauspost/cpuid/v2 v2.2.6 // indirect

go-leopard/src/lib.rs

@@ -1,6 +1,6 @@
 //! Rust wrapper over Go's reedsolomon module
 
-use std::ffi::c_uchar;
+use std::{ffi::c_uchar, ops::DerefMut};
 
 use thiserror::Error;
 
@@ -26,7 +26,7 @@ pub enum Error {
 
 /// Encode the shards using the Go's reedsolomon module
 pub fn encode(
-    shards: &mut [&mut [u8]],
+    shards: &mut [impl DerefMut<Target = [u8]>],
     data_shards: usize,
     shard_size: usize,
 ) -> Result<(), Error> {