diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/librustdoc/html/markdown.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/librustdoc/html/markdown.rs b/src/librustdoc/html/markdown.rs index 0a741f7815b..482e7b7f260 100644 --- a/src/librustdoc/html/markdown.rs +++ b/src/librustdoc/html/markdown.rs @@ -855,6 +855,36 @@ pub(crate) enum Ignore { Some(Vec<String>), } +/// This is the parser for fenced codeblocks attributes. It implements the following eBNF: +/// +/// ```eBNF +/// lang-string = *(token-list / delimited-attribute-list / comment) +/// +/// bareword = CHAR *(CHAR) +/// quoted-string = QUOTE *(NONQUOTE) QUOTE +/// token = bareword / quoted-string +/// sep = COMMA/WS *(COMMA/WS) +/// attribute = (DOT token)/(token EQUAL token) +/// attribute-list = [sep] attribute *(sep attribute) [sep] +/// delimited-attribute-list = OPEN-CURLY-BRACKET attribute-list CLOSE-CURLY-BRACKET +/// token-list = [sep] token *(sep token) [sep] +/// comment = OPEN_PAREN *(all characters) CLOSE_PAREN +/// +/// OPEN_PAREN = "(" +/// CLOSE_PARENT = ")" +/// OPEN-CURLY-BRACKET = "{" +/// CLOSE-CURLY-BRACKET = "}" +/// CHAR = ALPHA / DIGIT / "_" / "-" / ":" +/// QUOTE = %x22 +/// NONQUOTE = %x09 / %x20 / %x21 / %x23-7E ; TAB / SPACE / all printable characters except `"` +/// COMMA = "," +/// DOT = "." +/// EQUAL = "=" +/// +/// ALPHA = %x41-5A / %x61-7A ; A-Z / a-z +/// DIGIT = %x30-39 +/// WS = %x09 / " " +/// ``` pub(crate) struct TagIterator<'a, 'tcx> { inner: Peekable<CharIndices<'a>>, data: &'a str, |