Tune lints for 1.81 Rust

- bump up MSRV to 1.81

.github/workflows/ci.yml

@@ -81,7 +81,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        msrv: ["1.62.0"]
+        msrv: ["1.81.0"]
         os: ["ubuntu", "macOS", "windows"]
     runs-on: ${{ matrix.os }}-latest
     steps:

CHANGELOG.md

@@ -6,6 +6,20 @@ All user visible changes to this project will be documented in this file. This p
 
 
 
+## [0.4.0] · 202?-??-??
+[0.4.0]: /../../tree/v0.4.0
+
+[Diff](/../../compare/v0.3.1...v0.4.0)
+
+### BC Breaks
+
+- Bumped up [MSRV] to 1.81 because for `#[expect]` attribute usage. ([todo])
+
+[todo]: /../../commit/todo
+
+
+
+
 ## [0.3.1] · 2023-03-24
 [0.3.1]: /../../tree/v0.3.1
 
@@ -27,7 +41,7 @@ All user visible changes to this project will be documented in this file. This p
 
 ### BC Breaks
 
-- Set MSRV to [1.62.0](https://blog.rust-lang.org/2022/06/30/Rust-1.62.0.html). ([7f0b77e0])
+- Set [MSRV] to [1.62.0](https://blog.rust-lang.org/2022/06/30/Rust-1.62.0.html). ([7f0b77e0])
 - Upgrade [`syn`] to 2.0 version. ([90159de5])
 
 [7f0b77e0]: /../../commit/7f0b77e0842edd7ecd18c91ec1e1b218711cc230
@@ -122,5 +136,5 @@ All user visible changes to this project will be documented in this file. This p
 
 [`sealed`]: https://docs.rs/sealed
 [`syn`]: https://docs.rs/syn
-
+[MSRV]: https://doc.rust-lang.org/cargo/reference/manifest.html#the-rust-version-field
 [Semantic Versioning 2.0.0]: https://semver.org

Cargo.toml

@@ -2,7 +2,7 @@
 name = "synthez"
 version = "0.3.1"
 edition = "2021"
-rust-version = "1.62"
+rust-version = "1.81"
 description = "Steroids for `syn`, `quote` and `proc-macro2` crates."
 authors = ["Kai Ren <[email protected]>"]
 license = "BlueOak-1.0.0"

README.md

@@ -2,7 +2,7 @@ synthez
 =======
 
 [![crates.io](https://img.shields.io/crates/v/synthez.svg "crates.io")](https://crates.io/crates/synthez)
-[![Rust 1.62+](https://img.shields.io/badge/rustc-1.62+-lightgray.svg "Rust 1.62+")](https://blog.rust-lang.org/2022/06/30/Rust-1.62.0.html)
+[![Rust 1.81+](https://img.shields.io/badge/rustc-1.81+-lightgray.svg "Rust 1.81+")](https://blog.rust-lang.org/2024/09/05/Rust-1.81.0.html)
 [![Unsafe Forbidden](https://img.shields.io/badge/unsafe-forbidden-success.svg "Unsafe forbidden")](https://github.com/rust-secure-code/safety-dance)  
 [![CI](https://github.com/arcane-rs/synthez/workflows/CI/badge.svg?branch=main "CI")](https://github.com/arcane-rs/synthez/actions?query=workflow%3ACI+branch%3Amain)
 [![Rust docs](https://docs.rs/synthez/badge.svg "Rust docs")](https://docs.rs/synthez)

codegen/Cargo.toml

@@ -2,7 +2,7 @@
 name = "synthez-codegen"
 version = "0.3.1"
 edition = "2021"
-rust-version = "1.62"
+rust-version = "1.81"
 description = "Internal codegen shim of `synthez` crate."
 authors = ["Kai Ren <[email protected]>"]
 license = "BlueOak-1.0.0"

codegen/README.md

@@ -2,7 +2,7 @@ synthez-codegen
 ===============
 
 [![crates.io](https://img.shields.io/crates/v/synthez-codegen.svg "crates.io")](https://crates.io/crates/synthez-codegen)
-[![Rust 1.62+](https://img.shields.io/badge/rustc-1.62+-lightgray.svg "Rust 1.62+")](https://blog.rust-lang.org/2022/06/30/Rust-1.62.0.html)
+[![Rust 1.81+](https://img.shields.io/badge/rustc-1.81+-lightgray.svg "Rust 1.81+")](https://blog.rust-lang.org/2024/09/05/Rust-1.81.0.html)
 [![Unsafe Forbidden](https://img.shields.io/badge/unsafe-forbidden-success.svg "Unsafe forbidden")](https://github.com/rust-secure-code/safety-dance)  
 [![Rust docs](https://docs.rs/synthez-codegen/badge.svg "Rust docs")](https://docs.rs/synthez-codegen)
 

codegen/src/lib.rs

@@ -10,10 +10,13 @@
 #![forbid(non_ascii_idents, unsafe_code)]
 #![warn(
     clippy::absolute_paths,
+    clippy::allow_attributes,
+    clippy::allow_attributes_without_reason,
     clippy::as_conversions,
     clippy::as_ptr_cast_mut,
     clippy::assertions_on_result_states,
     clippy::branches_sharing_code,
+    clippy::cfg_not_test,
     clippy::clear_with_drain,
     clippy::clone_on_ref_ptr,
     clippy::collection_is_never_read,
@@ -84,6 +87,7 @@
     clippy::rest_pat_in_fully_bound_structs,
     clippy::same_name_method,
     clippy::semicolon_inside_block,
+    clippy::set_contains_or_insert,
     clippy::shadow_unrelated,
     clippy::significant_drop_in_scrutinee,
     clippy::significant_drop_tightening,

core/Cargo.toml

@@ -2,7 +2,7 @@
 name = "synthez-core"
 version = "0.3.1"
 edition = "2021"
-rust-version = "1.62"
+rust-version = "1.81"
 description = "Internal implementations of `synthez` crate."
 authors = ["Kai Ren <[email protected]>"]
 license = "BlueOak-1.0.0"

core/README.md

@@ -2,7 +2,7 @@ synthez-core
 ============
 
 [![crates.io](https://img.shields.io/crates/v/synthez-core.svg "crates.io")](https://crates.io/crates/synthez-core)
-[![Rust 1.62+](https://img.shields.io/badge/rustc-1.62+-lightgray.svg "Rust 1.62+")](https://blog.rust-lang.org/2022/06/30/Rust-1.62.0.html)
+[![Rust 1.81+](https://img.shields.io/badge/rustc-1.81+-lightgray.svg "Rust 1.81+")](https://blog.rust-lang.org/2024/09/05/Rust-1.81.0.html)
 [![Unsafe Forbidden](https://img.shields.io/badge/unsafe-forbidden-success.svg "Unsafe forbidden")](https://github.com/rust-secure-code/safety-dance)  
 [![Rust docs](https://docs.rs/synthez-core/badge.svg "Rust docs")](https://docs.rs/synthez-core)
 

core/src/field.rs

@@ -247,7 +247,10 @@ impl<T> Required<T> {
     /// value.
     #[must_use]
     pub fn into_inner(self) -> T {
-        #[allow(clippy::expect_used)] // intentional
+        #[expect( // intentional
+            clippy::expect_used,
+            reason = "follows `Required` type semantics"
+        )]
         self.0.expect("uninitialized `Required` value")
     }
 
@@ -270,14 +273,20 @@ impl<T> Deref for Required<T> {
     type Target = T;
 
     fn deref(&self) -> &Self::Target {
-        #[allow(clippy::expect_used)] // intentional
+        #[expect( // intentional
+            clippy::expect_used,
+            reason = "follows `Required` type semantics"
+        )]
         self.0.as_ref().expect("uninitialized `Required` value")
     }
 }
 
 impl<T> DerefMut for Required<T> {
     fn deref_mut(&mut self) -> &mut Self::Target {
-        #[allow(clippy::expect_used)] // intentional
+        #[expect( // intentional
+            clippy::expect_used,
+            reason = "follows `Required` type semantics"
+        )]
         self.0.as_mut().expect("uninitialized `Required` value")
     }
 }

core/src/lib.rs

@@ -11,10 +11,13 @@
 #![forbid(non_ascii_idents, unsafe_code)]
 #![warn(
     clippy::absolute_paths,
+    clippy::allow_attributes,
+    clippy::allow_attributes_without_reason,
     clippy::as_conversions,
     clippy::as_ptr_cast_mut,
     clippy::assertions_on_result_states,
     clippy::branches_sharing_code,
+    clippy::cfg_not_test,
     clippy::clear_with_drain,
     clippy::clone_on_ref_ptr,
     clippy::collection_is_never_read,
@@ -85,6 +88,7 @@
     clippy::rest_pat_in_fully_bound_structs,
     clippy::same_name_method,
     clippy::semicolon_inside_block,
+    clippy::set_contains_or_insert,
     clippy::shadow_unrelated,
     clippy::significant_drop_in_scrutinee,
     clippy::significant_drop_tightening,

core/src/parse/attrs.rs

@@ -100,7 +100,7 @@ impl<V: Attrs + Default + Parse> Attrs for Box<V> {
 
 /// Filters the given `attrs` to contain [`syn::Attribute`]s only with the given
 /// `name`.
-#[allow(single_use_lifetimes)] // no other way
+#[expect(single_use_lifetimes, reason = "no other way")]
 pub fn filter_by_name<'n: 'ret, 'a: 'ret, 'ret>(
     name: &'n str,
     attrs: &'a [syn::Attribute],
@@ -435,7 +435,10 @@ pub mod field {
             Self: TryApply<V, kind::Nested, D>,
         {
             fn try_apply_self(&mut self, another: Self) -> syn::Result<()> {
-                #[allow(clippy::iter_over_hash_type)] // order doesn't matter
+                #[expect( // order doesn't matter
+                    clippy::iter_over_hash_type,
+                    reason = "order doesn't matter here"
+                )]
                 for val in another {
                     self.try_apply(val)?;
                 }
@@ -489,7 +492,10 @@ pub mod field {
             Self: TryApply<V, kind::Value, D>,
         {
             fn try_apply_self(&mut self, another: Self) -> syn::Result<()> {
-                #[allow(clippy::iter_over_hash_type)] // order doesn't matter
+                #[expect( // order doesn't matter
+                    clippy::iter_over_hash_type,
+                    reason = "order doesn't matter here"
+                )]
                 for val in another {
                     self.try_apply(val)?;
                 }
@@ -654,7 +660,10 @@ pub mod field {
             Self: TryApply<(K, V), kind::Map, D>,
         {
             fn try_apply_self(&mut self, another: Self) -> syn::Result<()> {
-                #[allow(clippy::iter_over_hash_type)] // order doesn't matter
+                #[expect( // order doesn't matter
+                    clippy::iter_over_hash_type,
+                    reason = "order doesn't matter here"
+                )]
                 for val in another {
                     self.try_apply(val)?;
                 }

src/lib.rs

@@ -11,10 +11,13 @@
 #![forbid(non_ascii_idents, unsafe_code)]
 #![warn(
     clippy::absolute_paths,
+    clippy::allow_attributes,
+    clippy::allow_attributes_without_reason,
     clippy::as_conversions,
     clippy::as_ptr_cast_mut,
     clippy::assertions_on_result_states,
     clippy::branches_sharing_code,
+    clippy::cfg_not_test,
     clippy::clear_with_drain,
     clippy::clone_on_ref_ptr,
     clippy::collection_is_never_read,
@@ -85,6 +88,7 @@
     clippy::rest_pat_in_fully_bound_structs,
     clippy::same_name_method,
     clippy::semicolon_inside_block,
+    clippy::set_contains_or_insert,
     clippy::shadow_unrelated,
     clippy::significant_drop_in_scrutinee,
     clippy::significant_drop_tightening,
@@ -147,7 +151,7 @@
 )]
 
 // TODO: Remove once docs render correctly without it.
-#[allow(unused_imports)] // for correct Rust docs rendering only!
+#[expect(unused_imports, reason = "for correct Rust docs rendering only!")]
 use syn as _;
 
 #[doc(inline)]