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Diffstat (limited to 'compiler/rustc_expand/src/mbe.rs')
| -rw-r--r-- | compiler/rustc_expand/src/mbe.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_expand/src/mbe.rs b/compiler/rustc_expand/src/mbe.rs index 32d12c4fd0c..08d4a039454 100644 --- a/compiler/rustc_expand/src/mbe.rs +++ b/compiler/rustc_expand/src/mbe.rs @@ -68,6 +68,8 @@ pub(crate) enum KleeneOp { /// `MetaVarExpr` are "first-class" token trees. Useful for parsing macros. #[derive(Debug, PartialEq, Encodable, Decodable)] enum TokenTree { + /// A token. Unlike `tokenstream::TokenTree::Token` this lacks a `Spacing`. + /// See the comments about `Spacing` in the `transcribe` function. Token(Token), /// A delimited sequence, e.g. `($e:expr)` (RHS) or `{ $e }` (LHS). Delimited(DelimSpan, DelimSpacing, Delimited), |