Replace old iteration with new iteration.

src/parser/document.rs

@@ -19,6 +19,7 @@ use crate::context::RefContext;
 use crate::error::CustomError;
 use crate::error::MyError;
 use crate::error::Res;
+use crate::iter::AstNode;
 use crate::parser::org_source::convert_error;
 use crate::parser::util::blank_line;
 use crate::types::Document;
@@ -111,15 +112,14 @@ fn document_org_source<'b, 'g, 'r, 's>(
         _document(context, input).map(|(rem, out)| (Into::<&str>::into(rem), out))?;
     {
         // If there are radio targets in this document then we need to parse the entire document again with the knowledge of the radio targets.
-        let all_radio_targets: Vec<&Vec<Object<'_>>> = document
-            .iter_tokens()
-            .filter_map(|tkn| match tkn {
-                Token::Object(obj) => Some(obj),
-                _ => None,
-            })
-            .filter_map(|obj| match obj {
-                Object::RadioTarget(rt) => Some(rt),
-                _ => None,
+        let all_radio_targets: Vec<&Vec<Object<'_>>> = Into::<AstNode>::into(&document)
+            .into_iter()
+            .filter_map(|ast_node| {
+                if let AstNode::RadioTarget(ast_node) = ast_node {
+                    Some(ast_node)
+                } else {
+                    None
+                }
             })
             .map(|rt| &rt.children)
             .collect();