fix(codetable): automatically include digest dep when needed

.github/workflows/build.yml

@@ -123,13 +123,36 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
 
       - name: Install cargo-deny
-        run: cargo install cargo-deny
-        shell: bash
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-deny
 
       - name: Cargo Deny - Check
         run: cargo deny check
         shell: bash
 
+  # todo: run on all crates
+  cargo-hack-codetable:
+    name: Cargo Hack - codetable
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Sources
+        uses: actions/checkout@v4
+
+      - name: Install Rust Toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install cargo-hack
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-hack
+
+      - name: Cargo Hack - Check each feature
+        run: cargo hack check -p multihash-codetable --each-feature
+        shell: bash
+        env:
+          RUSTFLAGS: -D warnings
+
   semver-checks:
     runs-on: ubuntu-latest
     steps:

codetable/Cargo.toml

@@ -11,10 +11,14 @@ edition = "2021"
 [features]
 default = ["std"]
 std = ["blake2b_simd?/std", "blake2s_simd?/std", "blake3?/std", "digest?/std", "sha1?/std", "sha2?/std", "sha3?/std", "strobe-rs?/std", "ripemd?/std", "multihash-derive/std", "core2/std"]
-sha1 = ["dep:sha1"]
+sha1 = ["dep:digest", "dep:sha1"]
+sha2 = ["dep:digest", "dep:sha2"]
+sha3 = ["dep:digest", "dep:sha3"]
+ripemd = ["dep:digest", "dep:ripemd"]
 strobe = ["dep:strobe-rs"]
 blake2b = ["dep:blake2b_simd"]
 blake2s = ["dep:blake2s_simd"]
+blake3 = ["dep:blake3"]
 
 [dependencies]
 blake2b_simd = { version = "1.0.0", default-features = false, optional = true }
@@ -43,3 +47,13 @@ harness = false
 [[test]]
 name = "lib"
 required-features = ["sha1", "sha2", "sha3", "ripemd", "strobe", "blake2b", "blake2s", "blake3"]
+
+[[example]]
+name = "custom_table"
+path = "examples/custom_table.rs"
+required-features = ["blake2b", "sha2"]
+
+[[example]]
+name = "manual_mh"
+path = "examples/manual_mh.rs"
+required-features = ["sha2"]

codetable/src/hasher_impl.rs

@@ -22,7 +22,7 @@ macro_rules! derive_write {
     };
 }
 
-#[cfg(any(feature = "blake2b", feature = "blake2s", feature = "blake3"))]
+#[cfg(any(feature = "blake2b", feature = "blake2s"))]
 macro_rules! derive_hasher_blake {
     ($module:ident, $name:ident) => {
         /// Multihash hasher.
@@ -81,10 +81,10 @@ pub mod blake2b {
 pub mod blake2s {
     derive_hasher_blake!(blake2s_simd, Blake2sHasher);
 
-    /// 256 bit blake2b hasher.
+    /// 256 bit blake2s hasher.
     pub type Blake2s128 = Blake2sHasher<16>;
 
-    /// 512 bit blake2b hasher.
+    /// 512 bit blake2s hasher.
     pub type Blake2s256 = Blake2sHasher<32>;
 }
 

codetable/src/lib.rs

@@ -115,11 +115,15 @@ pub enum Code {
     Ripemd320,
 }
 
-#[cfg(test)]
+#[cfg(all(test, any(feature = "sha2", feature = "sha3")))]
 mod tests {
     use super::*;
+    #[cfg(feature = "sha3")]
     use crate::hasher_impl::sha3::{Sha3_256, Sha3_512};
-    use multihash_derive::{Hasher, Multihash, MultihashDigest};
+    #[cfg(feature = "sha3")]
+    use multihash_derive::Hasher;
+    #[cfg(feature = "sha2")]
+    use multihash_derive::{Multihash, MultihashDigest};
 
     #[test]
     #[cfg(feature = "sha3")]