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 => "..=",