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(),
+    })
+}

src/parser/export_snippet.rs

@@ -0,0 +1,13 @@
+use super::Context;
+use crate::error::Res;
+use crate::parser::util::not_yet_implemented;
+use crate::parser::ExportSnippet;
+
+#[tracing::instrument(ret, level = "debug")]
+pub fn export_snippet<'r, 's>(
+    context: Context<'r, 's>,
+    input: &'s str,
+) -> Res<&'s str, ExportSnippet<'s>> {
+    not_yet_implemented()?;
+    todo!()
+}

src/parser/mod.rs

@@ -9,6 +9,7 @@ mod element;
 mod element_parser;
 mod entity;
 mod exiting;
+mod export_snippet;
 mod fixed_width_area;
 mod footnote_definition;
 mod greater_block;
@@ -73,6 +74,7 @@ pub use object::AngleLink;
 pub use object::Bold;
 pub use object::Code;
 pub use object::Entity;
+pub use object::ExportSnippet;
 pub use object::Italic;
 pub use object::LatexFragment;
 pub use object::Object;

src/parser/object.rs

@@ -17,6 +17,7 @@ pub enum Object<'s> {
     OrgMacro(OrgMacro<'s>),
     Entity(Entity<'s>),
     LatexFragment(LatexFragment<'s>),
+    ExportSnippet(ExportSnippet<'s>),
 }
 
 #[derive(Debug, PartialEq)]
@@ -109,6 +110,13 @@ pub struct LatexFragment<'s> {
     pub source: &'s str,
 }
 
+#[derive(Debug, PartialEq)]
+pub struct ExportSnippet<'s> {
+    pub source: &'s str,
+    pub backend: &'s str,
+    pub contents: &'s str,
+}
+
 impl<'s> Source<'s> for Object<'s> {
     fn get_source(&'s self) -> &'s str {
         match self {
@@ -127,6 +135,7 @@ impl<'s> Source<'s> for Object<'s> {
             Object::OrgMacro(obj) => obj.source,
             Object::Entity(obj) => obj.source,
             Object::LatexFragment(obj) => obj.source,
+            Object::ExportSnippet(obj) => obj.source,
         }
     }
 }
@@ -214,3 +223,9 @@ impl<'s> Source<'s> for LatexFragment<'s> {
         self.source
     }
 }
+
+impl<'s> Source<'s> for ExportSnippet<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}

src/parser/token.rs

@@ -54,6 +54,7 @@ impl<'r, 's> Token<'r, 's> {
                 Object::OrgMacro(_) => Box::new(std::iter::empty()),
                 Object::Entity(_) => Box::new(std::iter::empty()),
                 Object::LatexFragment(_) => Box::new(std::iter::empty()),
+                Object::ExportSnippet(_) => Box::new(std::iter::empty()),
             },
             Token::Element(elem) => match elem {
                 Element::Paragraph(inner) => Box::new(inner.children.iter().map(Token::Object)),