Set up the initial code structure for the clock.

src/compare/diff.rs

@@ -1,6 +1,7 @@
 use super::sexp::Token;
 use super::util::assert_bounds;
 use super::util::assert_name;
+use crate::parser::Clock;
 use crate::parser::Comment;
 use crate::parser::CommentBlock;
 use crate::parser::Document;
@@ -213,6 +214,7 @@ fn compare_element<'s>(
         Element::ExampleBlock(obj) => compare_example_block(source, emacs, obj),
         Element::ExportBlock(obj) => compare_export_block(source, emacs, obj),
         Element::SrcBlock(obj) => compare_src_block(source, emacs, obj),
+        Element::Clock(obj) => compare_clock(source, emacs, obj),
     }
 }
 
@@ -677,3 +679,26 @@ fn compare_src_block<'s>(
         children: Vec::new(),
     })
 }
+
+fn compare_clock<'s>(
+    source: &'s str,
+    emacs: &'s Token<'s>,
+    rust: &'s Clock<'s>,
+) -> Result<DiffResult, Box<dyn std::error::Error>> {
+    let mut this_status = DiffStatus::Good;
+    let emacs_name = "clock";
+    if assert_name(emacs, emacs_name).is_err() {
+        this_status = DiffStatus::Bad;
+    }
+
+    if assert_bounds(source, emacs, rust).is_err() {
+        this_status = DiffStatus::Bad;
+    }
+
+    Ok(DiffResult {
+        status: this_status,
+        name: emacs_name.to_owned(),
+        message: None,
+        children: Vec::new(),
+    })
+}

src/parser/clock.rs

@@ -0,0 +1,8 @@
+use super::Context;
+use crate::error::Res;
+use crate::parser::Clock;
+
+#[tracing::instrument(ret, level = "debug")]
+pub fn clock<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, Clock<'s>> {
+    todo!()
+}

src/parser/element.rs

@@ -4,6 +4,7 @@ use super::greater_element::GreaterBlock;
 use super::greater_element::PlainList;
 use super::greater_element::PropertyDrawer;
 use super::greater_element::Table;
+use super::lesser_element::Clock;
 use super::lesser_element::Comment;
 use super::lesser_element::CommentBlock;
 use super::lesser_element::ExampleBlock;
@@ -30,6 +31,7 @@ pub enum Element<'s> {
     ExampleBlock(ExampleBlock<'s>),
     ExportBlock(ExportBlock<'s>),
     SrcBlock(SrcBlock<'s>),
+    Clock(Clock<'s>),
 }
 
 impl<'s> Source<'s> for Element<'s> {
@@ -49,6 +51,7 @@ impl<'s> Source<'s> for Element<'s> {
             Element::ExampleBlock(obj) => obj.source,
             Element::ExportBlock(obj) => obj.source,
             Element::SrcBlock(obj) => obj.source,
+            Element::Clock(obj) => obj.source,
         }
     }
 }

src/parser/element_parser.rs

@@ -1,3 +1,4 @@
+use super::clock::clock;
 use super::comment::comment;
 use super::drawer::drawer;
 use super::dynamic_block::dynamic_block;
@@ -45,6 +46,7 @@ pub fn non_paragraph_element<'r, 's>(
     let example_block_matcher = parser_with_context!(example_block)(context);
     let export_block_matcher = parser_with_context!(export_block)(context);
     let src_block_matcher = parser_with_context!(src_block)(context);
+    let clock_matcher = parser_with_context!(clock)(context);
     alt((
         map(plain_list_matcher, Element::PlainList),
         map(greater_block_matcher, Element::GreaterBlock),
@@ -58,5 +60,6 @@ pub fn non_paragraph_element<'r, 's>(
         map(example_block_matcher, Element::ExampleBlock),
         map(export_block_matcher, Element::ExportBlock),
         map(src_block_matcher, Element::SrcBlock),
+        map(clock_matcher, Element::Clock),
     ))(input)
 }

src/parser/lesser_element.rs

@@ -59,6 +59,11 @@ pub struct SrcBlock<'s> {
     pub contents: &'s str,
 }
 
+#[derive(Debug)]
+pub struct Clock<'s> {
+    pub source: &'s str,
+}
+
 impl<'s> Paragraph<'s> {
     pub fn of_text(input: &'s str) -> Self {
         let mut objects = Vec::with_capacity(1);
@@ -113,3 +118,9 @@ impl<'s> Source<'s> for SrcBlock<'s> {
         self.source
     }
 }
+
+impl<'s> Source<'s> for Clock<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}

src/parser/mod.rs

@@ -1,3 +1,4 @@
+mod clock;
 mod comment;
 mod document;
 mod drawer;
@@ -37,6 +38,7 @@ pub use greater_element::PlainListItem;
 pub use greater_element::PropertyDrawer;
 pub use greater_element::Table;
 pub use greater_element::TableRow;
+pub use lesser_element::Clock;
 pub use lesser_element::Comment;
 pub use lesser_element::CommentBlock;
 pub use lesser_element::ExampleBlock;