build(deps): update syn requirement from 1.0.109 to 2.0.38

Updates the requirements on [syn](https://github.com/dtolnay/syn) to permit the latest version.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](dtolnay/syn@1.0.109...2.0.38)

---
updated-dependencies:
- dependency-name: syn
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -77,7 +77,7 @@ scoped_threadpool = "0.1.9"
 serde = "1.0"
 serde_json = "1.0.82"
 smallvec = "1.8.0"
-syn = "1.0.109"
+syn = "2.0.38"
 tiny-skia-path = {version = "0.11.0"}
 unicode-bidi = "0.3.7"
 unicode-script = "0.5.4"

macros/builtin/Cargo.toml

@@ -19,7 +19,4 @@ proc-macro = true
 proc-macro2.workspace = true
 quote.workspace = true
 smallvec.workspace = true
-
-[dependencies.syn]
-features = ["full"]
-version = "1.0.109"
+syn ={ workspace=true, features = ["full"]}

macros/builtin/src/lib.rs

@@ -81,8 +81,8 @@ impl ToTokens for Item {
       Item::Field { doc_attr, mem, _colon, ty } => {
         let ty = quote! { #ty }.to_string();
         let name = mem.to_string();
-        let doc = match &doc_attr.lit {
-          syn::Lit::Str(str) => str,
+        let doc = match &doc_attr.value {
+          syn::Expr::Lit(syn::ExprLit { lit: syn::Lit::Str(str), .. }) => str,
           _ => unreachable!(),
         };
         tokens.extend(quote! {
@@ -96,8 +96,8 @@ impl ToTokens for Item {
       Item::Method { doc_attr, sign } => {
         let name = sign.ident.to_string();
         let sign = sign.to_token_stream().to_string();
-        let doc = match &doc_attr.lit {
-          syn::Lit::Str(str) => str,
+        let doc = match &doc_attr.value {
+          syn::Expr::Lit(syn::ExprLit { lit: syn::Lit::Str(str), .. }) => str,
           _ => unreachable!(),
         };
         tokens.extend(quote! {

macros/src/declare_derive2.rs

@@ -307,10 +307,9 @@ fn collect_filed_and_attrs(stt: &mut DataStruct) -> Result<Punctuated<DeclareFie
         .pairs_mut()
         .try_for_each::<_, syn::Result<()>>(|pair| {
           let (field, comma) = pair.into_tuple();
-          let idx = field
-            .attrs
-            .iter()
-            .position(|attr| attr.path.is_ident(DECLARE_ATTR));
+          let idx = field.attrs.iter().position(
+            |attr| matches!(&attr.meta, syn::Meta::List(l) if l.path.is_ident(DECLARE_ATTR)),
+          );
           let builder_attr = if let Some(idx) = idx {
             let attr = field.attrs.remove(idx);
             let args: DeclareAttr = attr.parse_args()?;

macros/src/rdl_macro.rs

@@ -14,7 +14,7 @@ use syn::{
   parse_macro_input, parse_quote,
   punctuated::Punctuated,
   spanned::Spanned,
-  token::{Bang, Brace, Colon, Comma, Dollar},
+  token::{Brace, Colon, Comma, Dollar, Not},
   Expr, Ident, Macro, Path, Result as SynResult, Stmt,
 };
 
@@ -115,7 +115,7 @@ impl Parse for StructLiteral {
         break;
       }
 
-      if content.peek(kw::rdl) && content.peek2(Bang) {
+      if content.peek(kw::rdl) && content.peek2(Not) {
         children.push(content.parse()?);
       } else if content.peek(Ident) {
         let f: DeclareField = content.parse()?;
@@ -142,7 +142,7 @@ impl Parse for StructLiteral {
 
 impl Parse for RdlParent {
   fn parse(input: ParseStream) -> SynResult<Self> {
-    if input.peek(kw::_dollar_ಠ_ಠ) && input.peek2(Bang) {
+    if input.peek(kw::_dollar_ಠ_ಠ) && input.peek2(Not) {
       let mac: Macro = input.parse()?;
 
       Ok(RdlParent::Var(mac.parse_body_with(

macros/src/symbol_process.rs

@@ -204,11 +204,8 @@ impl Fold for DollarRefsCtx {
   fn fold_local(&mut self, mut i: syn::Local) -> syn::Local {
     //  we fold right expression first, then fold pattern, because the `=` is a
     // right operator.
-    i.init = i
-      .init
-      .map(|(assign, e)| (assign, Box::new(self.fold_expr(*e))));
+    i.init = i.init.map(|init| self.fold_local_init(init));
     i.pat = self.fold_pat(i.pat);
-
     i
   }