ast: add ptr patterns

src/ast.rs

@@ -92,6 +92,8 @@ pub enum PatOp {
     Mut,
     /// Matches the dereference of a pointer (`&pat`)
     Ref,
+    /// Matches the dereference of a raw pointer (`*pat`)
+    Ptr,
     /// Matches a partial decomposition (`..rest`) or upper-bounded range (`..100`)
     Rest,
     /// Matches an exclusive bounded range (`0..100`)
@@ -176,7 +178,7 @@ pub enum TypedefKind {
 pub enum Expr<A: Annotation = Span> {
     /// An identifier
     Id(FqPath),
-    /// A meta-identifier
+    /// An escaped token for macro binding
     MetId(String),
     /// A literal bool, string, char, or int
     Lit(Literal),
@@ -577,6 +579,7 @@ impl Display for PatOp {
             Self::Pub => "pub ",
             Self::Mut => "mut ",
             Self::Ref => "&",
+            Self::Ptr => "*",
             Self::Rest => "..",
             Self::RangeEx => "..",
             Self::RangeIn => "..=",

src/parser.rs

@@ -361,6 +361,7 @@ impl<'t> Parse<'t> for Pat {
             TKind::Bar => p.consume().parse(level)?,
             TKind::Bang => p.consume().then(Pat::Never),
             TKind::Amp => Pat::Op(PatOp::Ref, vec![p.consume().parse(PPrec::Max)?]),
+            TKind::Star => Pat::Op(PatOp::Ptr, vec![p.consume().parse(PPrec::Max)?]),
             TKind::Mut => Pat::Op(PatOp::Mut, vec![p.consume().parse(PPrec::Max)?]),
             TKind::Pub => Pat::Op(PatOp::Pub, vec![p.consume().parse(PPrec::Max)?]),
             TKind::AmpAmp => Pat::Op(