Implement the new fields for subscript and superscript.

src/parser/subscript_and_superscript.rs

@@ -3,6 +3,7 @@ use nom::bytes::complete::tag;
 use nom::bytes::complete::take_while;
 use nom::character::complete::anychar;
 use nom::character::complete::one_of;
+use nom::combinator::consumed;
 use nom::combinator::map;
 use nom::combinator::not;
 use nom::combinator::opt;
@@ -54,17 +55,20 @@ pub(crate) fn subscript<'b, 'g, 'r, 's>(
     context: RefContext<'b, 'g, 'r, 's>,
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, Subscript<'s>> {
-    // We check for the underscore first before checking the pre-character as a minor optimization to avoid walking up the context tree to find the document root unnecessarily.
     let (remaining, _) = tag("_")(input)?;
     pre(input)?;
     let (remaining, body) = script_body(context, 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 (use_brackets, body) = match body {
+    let (use_brackets, contents, body) = match body {
-        ScriptBody::Braceless(text) => (false, vec![Object::PlainText(PlainText { source: text })]),
+        ScriptBody::Braceless(text) => (
-        ScriptBody::WithBraces(body) => (true, body),
+            false,
+            text,
+            vec![Object::PlainText(PlainText { source: text })],
+        ),
+        ScriptBody::WithBraces(contents, body) => (true, contents, body),
     };
 
     Ok((
@@ -72,6 +76,8 @@ pub(crate) fn subscript<'b, 'g, 'r, 's>(
         Subscript {
             source: source.into(),
             use_brackets,
+            contents,
+            post_blank: post_blank.map(Into::<&str>::into),
             children: body,
         },
     ))
@@ -89,13 +95,17 @@ pub(crate) fn superscript<'b, 'g, 'r, 's>(
     let (remaining, _) = tag("^")(input)?;
     pre(input)?;
     let (remaining, body) = script_body(context, 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 (use_brackets, body) = match body {
+    let (use_brackets, contents, body) = match body {
-        ScriptBody::Braceless(text) => (false, vec![Object::PlainText(PlainText { source: text })]),
+        ScriptBody::Braceless(text) => (
-        ScriptBody::WithBraces(body) => (true, body),
+            false,
+            text,
+            vec![Object::PlainText(PlainText { source: text })],
+        ),
+        ScriptBody::WithBraces(contents, body) => (true, contents, body),
     };
 
     Ok((
@@ -103,6 +113,8 @@ pub(crate) fn superscript<'b, 'g, 'r, 's>(
         Superscript {
             source: source.into(),
             use_brackets,
+            contents,
+            post_blank: post_blank.map(Into::<&str>::into),
             children: body,
         },
     ))
@@ -117,7 +129,7 @@ fn pre<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, ()> {
 #[derive(Debug)]
 enum ScriptBody<'s> {
     Braceless(&'s str),
-    WithBraces(Vec<Object<'s>>),
+    WithBraces(&'s str, Vec<Object<'s>>),
 }
 
 #[cfg_attr(
@@ -135,9 +147,10 @@ fn script_body<'b, 'g, 'r, 's>(
         map(parser_with_context!(script_alphanum)(context), |body| {
             ScriptBody::Braceless(body.into())
         }),
-        map(parser_with_context!(script_with_braces)(context), |body| {
+        map(
-            ScriptBody::WithBraces(body)
+            parser_with_context!(script_with_braces)(context),
-        }),
+            |(contents, body)| ScriptBody::WithBraces(Into::<&str>::into(contents), body),
+        ),
         map(
             parser_with_context!(script_with_parenthesis)(context),
             |body| ScriptBody::Braceless(body.into()),
@@ -195,7 +208,7 @@ fn end_script_alphanum_character<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>,
 fn script_with_braces<'b, 'g, 'r, 's>(
     context: RefContext<'b, 'g, 'r, 's>,
     input: OrgSource<'s>,
-) -> Res<OrgSource<'s>, Vec<Object<'s>>> {
+) -> Res<OrgSource<'s>, (OrgSource<'s>, Vec<Object<'s>>)> {
     let (remaining, _) = tag("{")(input)?;
     let exit_with_depth = script_with_braces_end(remaining.get_brace_depth());
     let parser_context = ContextElement::ExitMatcherNode(ExitMatcherNode {
@@ -204,13 +217,13 @@ fn script_with_braces<'b, 'g, 'r, 's>(
     });
     let parser_context = context.with_additional_node(&parser_context);
 
-    let (remaining, (children, _exit_contents)) = many_till(
+    let (remaining, (contents, (children, _exit_contents))) = consumed(many_till(
         parser_with_context!(standard_set_object)(&parser_context),
         parser_with_context!(exit_matcher_parser)(&parser_context),
-    )(remaining)?;
+    ))(remaining)?;
 
     let (remaining, _) = tag("}")(remaining)?;
-    Ok((remaining, children))
+    Ok((remaining, (contents, children)))
 }
 
 fn script_with_braces_end(starting_brace_depth: BracketDepth) -> impl ContextMatcher {

src/types/object.rs

@@ -264,6 +264,8 @@ pub struct StatisticsCookie<'s> {
 pub struct Subscript<'s> {
     pub source: &'s str,
     pub use_brackets: bool,
+    pub contents: &'s str,
+    pub post_blank: Option<&'s str>,
     pub children: Vec<Object<'s>>,
 }
 
@@ -271,6 +273,8 @@ pub struct Subscript<'s> {
 pub struct Superscript<'s> {
     pub source: &'s str,
     pub use_brackets: bool,
+    pub contents: &'s str,
+    pub post_blank: Option<&'s str>,
     pub children: Vec<Object<'s>>,
 }
 
@@ -883,11 +887,15 @@ impl<'s> StandardProperties<'s> for Subscript<'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.")
     }
 }
 
@@ -897,11 +905,15 @@ impl<'s> StandardProperties<'s> for Superscript<'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.")
     }
 }