Implement the new fields for citation.

src/parser/citation.rs

@@ -46,16 +46,22 @@ pub(crate) fn citation<'b, 'g, 'r, 's>(
     let (remaining, prefix) =
         must_balance_bracket(opt(parser_with_context!(global_prefix)(context)))(remaining)?;
 
+    let contents_begin = remaining;
     let (remaining, references) =
         separated_list1(tag(";"), parser_with_context!(citation_reference)(context))(remaining)?;
+    let contents_end = {
+        let (rem, _) = opt(tag(";"))(remaining)?;
+        rem
+    };
     let (remaining, suffix) = must_balance_bracket(opt(map(
         tuple((tag(";"), parser_with_context!(global_suffix)(context))),
         |(_, suffix)| suffix,
     )))(remaining)?;
     let (remaining, _) = tag("]")(remaining)?;
-    let (remaining, _trailing_whitespace) =
+    let (remaining, post_blank) =
         maybe_consume_object_trailing_whitespace_if_not_exiting(context, remaining)?;
     let source = get_consumed(input, remaining);
+    let contents = contents_begin.get_until(contents_end);
     Ok((
         remaining,
         Citation {
@@ -64,6 +70,8 @@ pub(crate) fn citation<'b, 'g, 'r, 's>(
             prefix: prefix.unwrap_or(Vec::new()),
             suffix: suffix.unwrap_or(Vec::new()),
             children: references,
+            contents: Into::<&str>::into(contents),
+            post_blank: post_blank.map(Into::<&str>::into),
         },
     ))
 }

src/types/object.rs

@@ -224,6 +224,8 @@ pub struct Citation<'s> {
     pub prefix: Vec<Object<'s>>,
     pub suffix: Vec<Object<'s>>,
     pub children: Vec<CitationReference<'s>>,
+    pub contents: &'s str,
+    pub post_blank: Option<&'s str>,
 }
 
 #[derive(Debug)]
@@ -832,11 +834,15 @@ impl<'s> StandardProperties<'s> for Citation<'s> {
     }
 
     fn get_contents<'b>(&'b self) -> Option<&'s str> {
-        todo!()
+        Some(self.contents)
     }
 
     fn get_post_blank(&self) -> PostBlank {
-        todo!()
+        self.post_blank
+            .map(|text| text.chars().count())
+            .unwrap_or(0)
+            .try_into()
+            .expect("Too much post-blank to fit into a PostBlank.")
     }
 }
 
@@ -846,11 +852,11 @@ impl<'s> StandardProperties<'s> for CitationReference<'s> {
     }
 
     fn get_contents<'b>(&'b self) -> Option<&'s str> {
-        todo!()
+        None
     }
 
     fn get_post_blank(&self) -> PostBlank {
-        todo!()
+        0
     }
 }