Shortcode emoji parsing

magnetar_mmm_parser/src/lib.rs

@@ -723,7 +723,20 @@ impl Context {
         ))
     }
 
-    fn mention<'a>(&self, input: Span<'a>) -> IResult<Span<'a>, Token<'a>> {
+    fn shortcode_emoji<'a>(&self, input: Span<'a>) -> IResult<Span<'a>, Token<'a>> {
+        // TODO: Fail when preceded by alphanumerics
+        let (input, _) = tag(":")(input)?;
+        let (input, shortcode) = map(
+            recognize(many1(alt((alphanumeric1, recognize(one_of("_+-")))))),
+            Span::into_fragment,
+        )(input)?;
+        let (input, _) = tag(":")(input)?;
+        let (input, _) = not(alphanumeric1)(input)?;
+
+        Ok((input, Token::ShortcodeEmoji(shortcode.into())))
+    }
+
+    fn tag_mention<'a>(&self, input: Span<'a>) -> IResult<Span<'a>, Token<'a>> {
         // TODO: Escaping and skip when preceded by alphanumerics
 
         let tags = one_of("@!");