Compare row type.

src/compare/diff.rs

@@ -86,6 +86,7 @@ use crate::types::Superscript;
 use crate::types::Table;
 use crate::types::TableCell;
 use crate::types::TableRow;
+use crate::types::TableRowType;
 use crate::types::Target;
 use crate::types::Time;
 use crate::types::TimeUnit;
@@ -1427,12 +1428,23 @@ fn compare_table_row<'b, 's>(
 ) -> Result<DiffEntry<'b, 's>, Box<dyn std::error::Error>> {
     let children = emacs.as_list()?;
     let mut child_status = Vec::new();
-    let this_status = DiffStatus::Good;
-    let message = None;
+    let mut this_status = DiffStatus::Good;
+    let mut message = None;
 
-    // TODO: Compare :type
-    //
-    // :type is an unquoted atom of either standard or rule
+    // Compare type
+    let row_type = get_property_unquoted_atom(emacs, ":type")?;
+    let rust_row_type = rust.get_type();
+    match (row_type, &rust_row_type) {
+        (Some("standard"), TableRowType::Standard) => {}
+        (Some("rule"), TableRowType::Rule) => {}
+        _ => {
+            this_status = DiffStatus::Bad;
+            message = Some(format!(
+                "Type mismatch (emacs != rust) {:?} != {:?}",
+                row_type, rust_row_type
+            ));
+        }
+    }
 
     for (emacs_child, rust_child) in children.iter().skip(2).zip(rust.children.iter()) {
         child_status.push(compare_ast_node(source, emacs_child, rust_child.into())?);

src/types/greater_element.rs

@@ -111,6 +111,12 @@ pub struct TableRow<'s> {
     pub children: Vec<TableCell<'s>>,
 }
 
+#[derive(Debug)]
+pub enum TableRowType {
+    Standard,
+    Rule,
+}
+
 impl<'s> StandardProperties<'s> for PlainList<'s> {
     fn get_source<'b>(&'b self) -> &'s str {
         self.source
@@ -194,3 +200,13 @@ impl<'s> PlainListItem<'s> {
             .map(|(checkbox_type, _)| checkbox_type)
     }
 }
+
+impl<'s> TableRow<'s> {
+    pub fn get_type(&self) -> TableRowType {
+        if self.children.is_empty() {
+            TableRowType::Rule
+        } else {
+            TableRowType::Standard
+        }
+    }
+}

src/types/mod.rs

@@ -35,6 +35,7 @@ pub use greater_element::QuoteBlock;
 pub use greater_element::SpecialBlock;
 pub use greater_element::Table;
 pub use greater_element::TableRow;
+pub use greater_element::TableRowType;
 pub use lesser_element::BabelCall;
 pub use lesser_element::Clock;
 pub use lesser_element::Comment;