Remove boxes from ast TyPat lists

Author: camsteffen

compiler/rustc_ast/src/ast.rs

@@ -2537,7 +2537,7 @@ pub enum TyPatKind {
     /// A range pattern (e.g., `1...2`, `1..2`, `1..`, `..2`, `1..=2`, `..=2`).
     Range(Option<Box<AnonConst>>, Option<Box<AnonConst>>, Spanned<RangeEnd>),
 
-    Or(ThinVec<Box<TyPat>>),
+    Or(ThinVec<TyPat>),
 
     /// Placeholder for a pattern that wasn't syntactically well formed in some way.
     Err(ErrorGuaranteed),

compiler/rustc_ast/src/visit.rs

@@ -391,7 +391,7 @@ macro_rules! common_visitor_and_walkers {
             ThinVec<PreciseCapturingArg>,
             ThinVec<Pat>,
             ThinVec<Ty>,
-            ThinVec<Box<TyPat>>,
+            ThinVec<TyPat>,
         );
 
         // This macro generates `impl Visitable` and `impl MutVisitable` that forward to `Walkable`

compiler/rustc_builtin_macros/src/pattern_type.rs

@@ -44,14 +44,14 @@ fn parse_pat_ty<'a>(
         parser.unexpected()?;
     }
 
-    Ok((ty, pat))
+    Ok((ty, Box::new(pat)))
 }
 
-fn ty_pat(kind: TyPatKind, span: Span) -> Box<TyPat> {
-    Box::new(TyPat { id: DUMMY_NODE_ID, kind, span, tokens: None })
+fn ty_pat(kind: TyPatKind, span: Span) -> TyPat {
+    TyPat { id: DUMMY_NODE_ID, kind, span, tokens: None }
 }
 
-fn pat_to_ty_pat(cx: &mut ExtCtxt<'_>, pat: ast::Pat) -> Box<TyPat> {
+fn pat_to_ty_pat(cx: &mut ExtCtxt<'_>, pat: ast::Pat) -> TyPat {
     let kind = match pat.kind {
         ast::PatKind::Range(start, end, include_end) => TyPatKind::Range(
             start.map(|value| Box::new(AnonConst { id: DUMMY_NODE_ID, value })),