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fixes stated grammar for block comments... #5583

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fixes stated grammar for block comments... #5583

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48cb50a
fixes stated grammar for block comments, by adding Kleene '+' in two …
jbclements Mar 27, 2013
81d30ad
fix another subtle bug in comment regex
jbclements Mar 28, 2013
dcb8fa8
added defn of non_slash_or_star
jbclements Mar 28, 2013
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8 changes: 4 additions & 4 deletions doc/rust.md
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Expand Up @@ -125,7 +125,7 @@ but a small number are defined in terms of Unicode properties or explicit codepo
## Special Unicode Productions

The following productions in the Rust grammar are defined in terms of Unicode properties:
`ident`, `non_null`, `non_star`, `non_eol`, `non_slash`, `non_single_quote` and `non_double_quote`.
`ident`, `non_null`, `non_star`, `non_eol`, `non_slash_or_star`, `non_single_quote` and `non_double_quote`.

### Identifiers

Expand All @@ -147,16 +147,16 @@ Some productions are defined by exclusion of particular Unicode characters:
- `non_null` is any single Unicode character aside from `U+0000` (null)
- `non_eol` is `non_null` restricted to exclude `U+000A` (`'\n'`)
- `non_star` is `non_null` restricted to exclude `U+002A` (`*`)
- `non_slash` is `non_null` restricted to exclude `U+002F` (`/`)
- `non_slash_or_star` is `non_null` restricted to exclude `U+002F` (`/`) and `U+002A` (`*`)
- `non_single_quote` is `non_null` restricted to exclude `U+0027` (`'`)
- `non_double_quote` is `non_null` restricted to exclude `U+0022` (`"`)

## Comments

~~~~~~~~ {.ebnf .gram}
comment : block_comment | line_comment ;
block_comment : "/*" block_comment_body * "*/" ;
block_comment_body : non_star * | '*' non_slash ;
block_comment : "/*" block_comment_body * '*' + '/' ;
block_comment_body : non_star * | '*' + non_slash_or_star ;
line_comment : "//" non_eol * ;
~~~~~~~~

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