update-syn

Author: ModProg

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Changed
+- **Breaking Change** updated syn to v3.
 
 ## [0.10.5] - 2025-10-02
 ### Fixed

Cargo.toml

@@ -18,10 +18,10 @@ edition = "2021"
 
 [dependencies]
 derive-where = "1.2.7"
-manyhow = "0.11.3"
+manyhow = "0.14.0"
 proc-macro2 = "1"
 quote = "1"
-syn = "2"
+syn = "3"
 
 [features]
 # default = ["syn-full"]
@@ -35,7 +35,7 @@ path = "macro"
 insta = "1.39.0"
 quote = "1"
 static_assertions = "1.1.0"
-syn = { version = "2", features = ["extra-traits"] }
+syn = { version = "3", features = ["extra-traits"] }
 
 [package.metadata.release]
 shared-version = true

example/Cargo.toml

@@ -9,7 +9,7 @@ proc-macro = true
 
 [dependencies]
 attribute-derive = { path = "..", features = ["syn-full"] }
-syn = { version = "2", features = ["full", "extra-traits"] }
+syn = { version = "3", features = ["full", "extra-traits"] }
 trybuild = "1"
 
 [dev-dependencies]

macro/Cargo.toml

@@ -18,13 +18,13 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1"
 quote = "1"
-quote-use = "0.8"
-syn = "2"
+quote-use = "0.9"
+syn = "3"
 proc-macro-utils = "0.10.0"
 # proc-macro-utils = {path = "../../proc-macro-utils"}
 interpolator = { version = "0.5.0", features = ["iter"] }
 collection_literals = "1"
-manyhow = "0.11"
+manyhow = "0.14"
 
 [package.metadata.release]
 tag = false

macro/src/lib.rs

@@ -5,11 +5,11 @@ use std::iter;
 use std::ops::Range;
 
 use collection_literals::hash;
-use interpolator::{format, Formattable};
-use manyhow::{bail, error_message, manyhow, span_range, ErrorMessage, Result};
-use proc_macro2::{Literal, Span, TokenStream};
+use interpolator::{Formattable, format};
+use manyhow::{ErrorMessage, Result, bail, error_message, manyhow, span_range};
 use proc_macro_utils::{TokenParser, TokenStream2Ext};
-use quote::{format_ident, ToTokens};
+use proc_macro2::{Literal, Span, TokenStream};
+use quote::{ToTokens, format_ident};
 use quote_use::quote_use as quote;
 use syn::spanned::Spanned;
 use syn::{DataStruct, DeriveInput, Field, Fields, Generics, Ident, LitStr, Type, Visibility};
@@ -181,7 +181,8 @@ impl StructAttrs {
         let mut ident: Option<Ident> = None;
         let mut aliases: Vec<String> = vec![];
         let mut error = StructError::Specific(Default::default());
-        // let mut duplicate: DuplicateStrategy = DuplicateStrategy::AggregateOrError;
+        // let mut duplicate: DuplicateStrategy =
+        // DuplicateStrategy::AggregateOrError;
         for attr in attrs
             .into_iter()
             .filter(|attr| ATTRIBUTE_IDENTS.iter().any(|a| attr.path().is_ident(a)))
@@ -638,8 +639,8 @@ impl AttrField {
         self.help
             .as_ref()
             .map(|help| {
-                // Precision of `.0` hides the entries but surpresses error when not used in
-                // `help` string.
+                // Precision of `.0` hides the entries but surpresses error when
+                // not used in `help` string.
                 let fmt = format!("{{__error}}{help}{{open_or_eq:.0}}{{close_or_empty:.0}}");
                 let ty = quote!(<#ty as ::attribute_derive::parsing::AttributeNamed>);
                 quote! { .map_err(|__error| {
@@ -855,17 +856,19 @@ pub fn from_attr_derive(
         aliases.insert(0, attribute_ident.to_string());
     }
 
-    let attribute_ident_trait = (!aliases.is_empty())
-        .then(|| {
+    let attribute_ident_trait = if !aliases.is_empty() {
+        {
             quote! {
                 # use attribute_derive::AttributeIdent;
 
                 impl #impl_generics AttributeIdent for #ident #ty_generics #where_clause {
                     const IDENTS: &'static [&'static str] = &[#(#aliases),*];
                 }
             }
-        })
-        .unwrap_or_default();
+        }
+    } else {
+        Default::default()
+    };
 
     let (fields, conflicts) = match data {
         syn::Data::Struct(DataStruct {

src/lib.rs

@@ -1,4 +1,5 @@
 #![warn(missing_docs)]
+#![allow(clippy::test_attr_in_doctest)]
 //! Basically clap for attribute macros:
 //! ```
 //! use attribute_derive::FromAttr;

src/syn_impls.rs

@@ -9,13 +9,13 @@ use syn::token::{
     Trait, Try, Typeof, Underscore, Union, Unsafe, Unsized, Use, Virtual, Where, While, Yield,
 };
 use syn::{
-    Abi, AngleBracketedGenericArguments, BareFnArg, BinOp, BoundLifetimes, ConstParam, DeriveInput,
-    Expr, FieldsNamed, FieldsUnnamed, GenericArgument, GenericParam, Generics, Ident, Index,
-    Lifetime, Lit, LitBool, LitByteStr, LitChar, LitFloat, LitInt, LitStr, Member, Meta, MetaList,
-    MetaNameValue, ParenthesizedGenericArguments, Path, PathSegment, ReturnType, TraitBound,
-    TraitBoundModifier, Type, TypeArray, TypeBareFn, TypeGroup, TypeImplTrait, TypeInfer,
-    TypeMacro, TypeNever, TypeParam, TypeParamBound, TypeParen, TypePath, TypePtr, TypeReference,
-    TypeSlice, TypeTraitObject, TypeTuple, UnOp, Variant, Visibility, WhereClause, WherePredicate,
+    Abi, AngleBracketedGenericArguments, BinOp, BoundLifetimes, ConstParam, DeriveInput, Expr,
+    FieldsNamed, FieldsUnnamed, GenericArgument, GenericParam, Generics, Ident, Index, Lifetime,
+    Lit, LitBool, LitByteStr, LitChar, LitFloat, LitInt, LitStr, Member, Meta, MetaList,
+    MetaNameValue, ParenthesizedGenericArguments, Path, PathSegment, ReturnType, TraitBound, Type,
+    TypeArray, TypeFnPtr, TypeGroup, TypeImplTrait, TypeInfer, TypeMacro, TypeNever, TypeParam,
+    TypeParamBound, TypeParen, TypePath, TypePtr, TypeReference, TypeSlice, TypeTraitObject,
+    TypeTuple, UnOp, Variant, Visibility, WhereClause, WherePredicate,
 };
 
 use crate::parsing::*;
@@ -134,7 +134,6 @@ impl_Attribute_for_Parse_and_ToTokens![
     Auto,
     Await,
     Not,
-    BareFnArg,
     Become,
     BinOp,
     BoundLifetimes,
@@ -227,10 +226,9 @@ impl_Attribute_for_Parse_and_ToTokens![
     Tilde,
     Trait,
     TraitBound,
-    TraitBoundModifier,
     Try,
     TypeArray,
-    TypeBareFn,
+    TypeFnPtr,
     TypeGroup,
     TypeImplTrait,
     TypeInfer,
@@ -282,8 +280,6 @@ mod syn_full {
         Stmt, TraitItem, TraitItemConst, TraitItemMacro, TraitItemType, UseTree,
     };
 
-    use super::*;
-
     impl_Attribute_for_Parse_and_ToTokens![
         Arm,
         Block,

tests/derive-legacy.rs

@@ -1,4 +1,4 @@
-#![allow(deprecated)]
+#![allow(deprecated, unused)]
 use attribute_derive::Attribute;
 use syn::parse_quote;
 
@@ -7,7 +7,7 @@ use syn::parse_quote;
 fn test() {
     use proc_macro2::TokenStream;
     use quote::quote;
-    use syn::{parse2, Expr, LitStr, Type};
+    use syn::{Expr, LitStr, Type, parse2};
 
     #[derive(Attribute)]
     #[attribute(ident = test)]

tests/derive.rs

@@ -1,3 +1,4 @@
+#![allow(unused)]
 use attribute_derive::parsing::AttributeNamed;
 use attribute_derive::{FlagOrValue, FromAttr, AttributeIdent};
 use proc_macro2::TokenStream;