NFC: Add doc for id-punct

PiperOrigin-RevId: 265190168
llvm · Aug 24, 2019 · 96e96e0 · 96e96e0
1 parent 4da3741
commit 96e96e0
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/mlir/lib/Parser/Lexer.cpp b/mlir/lib/Parser/Lexer.cpp
@@ -318,6 +318,7 @@ Token Lexer::lexNumber(const char *tokStart) {
 ///   block-id      ::= '^' suffix-id
 ///   type-id       ::= '!' suffix-id
 ///   suffix-id     ::= digit+ | (letter|id-punct) (letter|id-punct|digit)*
+///   id-punct      ::= `$` | `.` | `_` | `-`
 ///
 Token Lexer::lexPrefixedIdentifier(const char *tokStart) {
   Token::Kind kind;