Implement parser for inline footnotes.

src/parser/footnote_reference.rs

@@ -15,7 +15,6 @@ use crate::parser::parser_context::FootnoteReferenceDefinition;
 use crate::parser::parser_with_context::parser_with_context;
 use crate::parser::util::exit_matcher_parser;
 use crate::parser::util::get_consumed;
-use crate::parser::util::not_yet_implemented;
 use crate::parser::FootnoteReference;
 use crate::parser::Object;
 
@@ -39,6 +38,7 @@ fn anonymous_footnote<'r, 's>(
             depth: 0,
         },
     ));
+    // TODO: I could insert FootnoteReferenceDefinition entries in the context after each matched object to reduce the scanning done for counting brackets which should be more efficient.
     let (remaining, (children, _exit_contents)) = verify(
         many_till(
             parser_with_context!(standard_set_object)(&parser_context),
@@ -63,8 +63,33 @@ fn inline_footnote<'r, 's>(
     context: Context<'r, 's>,
     input: &'s str,
 ) -> Res<&'s str, FootnoteReference<'s>> {
-    not_yet_implemented()?;
-    todo!()
+    let (remaining, _) = tag_no_case("[fn:")(input)?;
+    let (remaining, label_contents) = label(remaining)?;
+    let (remaining, _) = tag(":")(remaining)?;
+    let parser_context = context.with_additional_node(ContextElement::FootnoteReferenceDefinition(
+        FootnoteReferenceDefinition {
+            position: remaining,
+            depth: 0,
+        },
+    ));
+    // TODO: I could insert FootnoteReferenceDefinition entries in the context after each matched object to reduce the scanning done for counting brackets which should be more efficient.
+    let (remaining, (children, _exit_contents)) = verify(
+        many_till(
+            parser_with_context!(standard_set_object)(&parser_context),
+            parser_with_context!(exit_matcher_parser)(&parser_context),
+        ),
+        |(children, exit_contents)| !children.is_empty() && exit_contents == &"]",
+    )(remaining)?;
+
+    let source = get_consumed(input, remaining);
+    Ok((
+        remaining,
+        FootnoteReference {
+            source,
+            label: Some(label_contents),
+            definition: children,
+        },
+    ))
 }
 
 #[tracing::instrument(ret, level = "debug")]