Add anymore support

CHANGELOG.md

@@ -1,3 +1,9 @@
+# Unreleased
+
+- Add support for using `AnyDebug` (from Anymore) as the storage type, for better debugging.
+  This can be enabled through the `anymore` cargo feature.
+  If this feature is enabled, the MSRV is 1.86 (as that is Anymore's MSRV so it can use trait upcasting)
+
 # 1.0.1 (2024-11-09)
 
 - Suppress future incompatibility lint in CloneToAny impl. Contributed by @swlynch99 — thank you. ([#2](https://github.com/reivilibre/anymap3/pull/2))

Cargo.toml

@@ -1,7 +1,10 @@
 [package]
 name = "anymap3"
 version = "1.0.1"
-authors = ["Olivier 'reivilibre' (fork maintainer) <contact@librepush.net>", "Chris Morgan (original author) <rust@chrismorgan.info>"]
+authors = [
+    "Olivier 'reivilibre' (fork maintainer) <contact@librepush.net>",
+    "Chris Morgan (original author) <rust@chrismorgan.info>",
+]
 edition = "2018"
 rust-version = "1.36"
 description = "A safe and convenient store for one value of each type"
@@ -21,3 +24,5 @@ std = []
 [dependencies]
 # The hashbrown feature, disabled by default, is exposed under different stability guarantees than the usual SemVer ones: by preference the version range will only be extended, but it may be shrunk in a MINOR release. See README.md.
 hashbrown = { version = ">=0.1.1, <0.16", optional = true }
+# If this feature is enabled, anymap3's MSRV is the same as Anymore's.
+anymore = { version = "1.0.0", optional = true }

README.md

@@ -57,6 +57,10 @@ anymap3 = { version = "1.0.1", default-features = false, features = ["hashbrown"
 
 **On stability:** hashbrown is still pre-1.0.0 and experiencing breaking changes. Because it’s useful for a small fraction of users, I am retaining it, but with *different compatibility guarantees to the typical SemVer ones*. Where possible, I will just widen the range for new releases of hashbrown, but if an incompatible change occurs, I may drop support for older versions of hashbrown with a bump to the *minor* part of the anymap version number (e.g. 1.1.0, 1.2.0). Iff you’re using this feature, this is cause to *consider* using a tilde requirement like `"~1.0"` (or spell it out as `>=1, <1.1`).
 
+This crate can also be used with `AnyDebug` from the [Anymore](https://docs.rs/anymore/latest/anymore) crate.
+This is enabled using the `anymore` cargo feature.
+If this feature is enabled, this crate's MSRV is the same as Anymore's.
+
 ## Unsafe code in this library
 
 This library uses a fair bit of unsafe code for several reasons:

src/any.rs

@@ -168,3 +168,12 @@ implement!(CloneAny + Send + Sync);
 impl_clone!(dyn CloneAny);
 impl_clone!(dyn CloneAny + Send);
 impl_clone!(dyn CloneAny + Send + Sync);
+
+#[cfg(feature = "anymore")]
+use anymore::AnyDebug;
+#[cfg(feature = "anymore")]
+implement!(AnyDebug);
+#[cfg(feature = "anymore")]
+implement!(AnyDebug + Send);
+#[cfg(feature = "anymore")]
+implement!(AnyDebug + Send + Sync);

src/lib.rs

@@ -652,6 +652,9 @@ fn type_id_hasher() {
             unsafe { core::mem::transmute::<TypeId, u128>(type_id) } as u64
         );
     }
+    // TODO: As of (presumably) https://github.com/rust-lang/rust/pull/121358, these tests fail
+    // Presumably, this is an endianness issue - debug printing shows that the bits which are output
+    // are a subset of the correct bits.
     // Pick a variety of types, just to demonstrate it’s all sane. Normal, zero-sized, unsized, &c.
     verify_hashing_with(TypeId::of::<usize>());
     verify_hashing_with(TypeId::of::<()>());

test

@@ -7,7 +7,7 @@ run_tests() {
 		cargo $1 test $release --no-default-features  # Not very useful without std or hashbrown, but hey, it works! (Doctests emit an error about needing a global allocator, but it exits zero anyway. ¯\_(ツ)_/¯)
 		cargo $1 test $release --no-default-features --features hashbrown
 		cargo $1 test $release
-		cargo $1 test $release --all-features
+		cargo $1 test $release --features std,hashbrown
 	done
 }
 
@@ -20,6 +20,10 @@ run_tests +1.36.0
 rm Cargo.lock
 run_tests
 
+# We only test anymore on stable, as it has a 1.82 MSRV.
+cargo test --features anymore
+cargo test --no-default-features --features anymore,hashbrown
+
 cargo clippy
 cargo bench
 cargo doc