Create structure for export snippets.

src/compare/diff.rs

@@ -16,6 +16,7 @@ use crate::parser::Element;
 use crate::parser::Entity;
 use crate::parser::ExampleBlock;
 use crate::parser::ExportBlock;
+use crate::parser::ExportSnippet;
 use crate::parser::FixedWidthArea;
 use crate::parser::FootnoteDefinition;
 use crate::parser::GreaterBlock;
@@ -158,6 +159,7 @@ fn compare_object<'s>(
         Object::OrgMacro(obj) => compare_org_macro(source, emacs, obj),
         Object::Entity(obj) => compare_entity(source, emacs, obj),
         Object::LatexFragment(obj) => compare_latex_fragment(source, emacs, obj),
+        Object::ExportSnippet(obj) => compare_export_snippet(source, emacs, obj),
     }
 }
 
@@ -1288,3 +1290,26 @@ fn compare_latex_fragment<'s>(
         children: Vec::new(),
     })
 }
+
+fn compare_export_snippet<'s>(
+    source: &'s str,
+    emacs: &'s Token<'s>,
+    rust: &'s ExportSnippet<'s>,
+) -> Result<DiffResult, Box<dyn std::error::Error>> {
+    let mut this_status = DiffStatus::Good;
+    let emacs_name = "export-snippet";
+    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(),
+    })
+}