diff options
Diffstat (limited to 'src/libsyntax/ext/tt/macro_rules.rs')
| -rw-r--r-- | src/libsyntax/ext/tt/macro_rules.rs | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/libsyntax/ext/tt/macro_rules.rs b/src/libsyntax/ext/tt/macro_rules.rs index ff622b0c18f..30322ff523d 100644 --- a/src/libsyntax/ext/tt/macro_rules.rs +++ b/src/libsyntax/ext/tt/macro_rules.rs @@ -77,9 +77,9 @@ impl<'a> ParserAnyMacro<'a> { e })); - // We allow semicolons at the end of expressions -- e.g. the semicolon in + // We allow semicolons at the end of expressions -- e.g., the semicolon in // `macro_rules! m { () => { panic!(); } }` isn't parsed by `.parse_expr()`, - // but `m!()` is allowed in expression positions (c.f. issue #34706). + // but `m!()` is allowed in expression positions (cf. issue #34706). if kind == AstFragmentKind::Expr && parser.token == token::Semi { parser.bump(); } @@ -482,15 +482,15 @@ fn check_matcher(sess: &ParseSess, err == sess.span_diagnostic.err_count() } -// The FirstSets for a matcher is a mapping from subsequences in the +// `The FirstSets` for a matcher is a mapping from subsequences in the // matcher to the FIRST set for that subsequence. // // This mapping is partially precomputed via a backwards scan over the // token trees of the matcher, which provides a mapping from each -// repetition sequence to its FIRST set. +// repetition sequence to its *first* set. // -// (Hypothetically sequences should be uniquely identifiable via their -// spans, though perhaps that is false e.g. for macro-generated macros +// (Hypothetically, sequences should be uniquely identifiable via their +// spans, though perhaps that is false, e.g., for macro-generated macros // that do not try to inject artificial span information. My plan is // to try to catch such cases ahead of time and not include them in // the precomputed mapping.) |