feat: latex in Traverser

src/export/forward.rs

@@ -48,7 +48,8 @@
 ///         inline_src inline_call code bold verbatim italic strike underline list list_item
 ///         special_block quote_block center_block verse_block comment_block example_block export_block
 ///         source_block babel_call clock cookie radio_target drawer dyn_block fn_def fn_ref macros
-///         snippet timestamp target fixed_width org_table org_table_row org_table_cell
+///         snippet timestamp target fixed_width org_table org_table_row org_table_cell latex_fragment
+///         latex_environment
 ///     }
 /// }
 ///
@@ -190,6 +191,12 @@ macro_rules! forward_handler {
     (@method $handler:ty, link) => {
         forward_handler!(@method $handler, link, WalkEvent<&$crate::ast::Link>);
     };
+    (@method $handler:ty, latex_fragment) => {
+        forward_handler!(@method $handler, latex_fragment, WalkEvent<&$crate::ast::LatexFragment>);
+    };
+    (@method $handler:ty, latex_environment) => {
+        forward_handler!(@method $handler, latex_environment, WalkEvent<&$crate::ast::LatexEnvironment>);
+    };
     (@method $handler:ty, $x:ident) => {
         std::compile_error!(std::concat!(std::stringify!($x), " is not a method"));
     };

src/export/html.rs

@@ -441,4 +441,24 @@ impl Traverser for HtmlExport {
 
     #[tracing::instrument(skip(self, _ctx))]
     fn target(&mut self, _event: WalkEvent<&Target>, _ctx: &mut TraversalContext) {}
+
+    #[tracing::instrument(skip(self, ctx))]
+    fn latex_fragment(&mut self, event: WalkEvent<&LatexFragment>, ctx: &mut TraversalContext) {
+        if let WalkEvent::Enter(l) = event {
+            self.output += &l.syntax.to_string();
+            ctx.skip();
+        }
+    }
+
+    #[tracing::instrument(skip(self, ctx))]
+    fn latex_environment(
+        &mut self,
+        event: WalkEvent<&LatexEnvironment>,
+        ctx: &mut TraversalContext,
+    ) {
+        if let WalkEvent::Enter(l) = event {
+            self.output += &l.syntax.to_string();
+            ctx.skip();
+        }
+    }
 }

src/export/traverse.rs

@@ -137,6 +137,8 @@ pub trait Traverser {
             ORG_TABLE_RULE_ROW | ORG_TABLE_STANDARD_ROW => traverse!(OrgTableRow, org_table_row),
             ORG_TABLE_CELL => traverse!(OrgTableCell, org_table_cell),
             LINK => traverse!(Link, link),
+            LATEX_FRAGMENT => traverse!(LatexFragment, latex_fragment),
+            LATEX_ENVIRONMENT => traverse!(LatexEnvironment, latex_environment),
 
             BLOCK_CONTENT | LIST_ITEM_CONTENT => traverse_children!(node),
 
@@ -236,4 +238,12 @@ pub trait Traverser {
     fn org_table_cell(&mut self, _event: WalkEvent<&OrgTableCell>, _ctx: &mut TraversalContext);
     /// Called when entering or leaving `Link` node
     fn link(&mut self, _event: WalkEvent<&Link>, _ctx: &mut TraversalContext);
+    /// Called when entering or leaving `LatexFragment` node
+    fn latex_fragment(&mut self, _event: WalkEvent<&LatexFragment>, _ctx: &mut TraversalContext);
+    /// Called when entering or leaving `LatexEnvironment` node
+    fn latex_environment(
+        &mut self,
+        _event: WalkEvent<&LatexEnvironment>,
+        _ctx: &mut TraversalContext,
+    );
 }