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Author: workingjubilee

compiler/rustc_ast/src/ast.rs

@@ -675,7 +675,9 @@ pub enum BindingMode {
 
 #[derive(Clone, Encodable, Decodable, Debug)]
 pub enum RangeEnd {
+    /// `..=` or `...`
     Included(RangeSyntax),
+    /// `..`
     Excluded,
 }
 
@@ -687,6 +689,7 @@ pub enum RangeSyntax {
     DotDotEq,
 }
 
+/// All the different flavors of pattern that Rust recognizes.
 #[derive(Clone, Encodable, Decodable, Debug)]
 pub enum PatKind {
     /// Represents a wildcard pattern (`_`).
@@ -727,7 +730,7 @@ pub enum PatKind {
     /// A literal.
     Lit(P<Expr>),
 
-    /// A range pattern (e.g., `1...2`, `1..=2` or `1..2`).
+    /// A range pattern (e.g., `1...2`, `1..2`, `1..`, `..2`, `1..=2`, `..=2`).
     Range(Option<P<Expr>>, Option<P<Expr>>, Spanned<RangeEnd>),
 
     /// A slice pattern `[a, b, c]`.