Remove OrgSource from the public document parser interface.

src/parser/document.rs

@@ -36,6 +36,7 @@ use crate::error::Res;
 use crate::parser::comment::comment;
 use crate::parser::element_parser::element;
 use crate::parser::object_parser::standard_set_object;
+use crate::parser::org_source::convert_error;
 use crate::parser::planning::planning;
 use crate::parser::property_drawer::property_drawer;
 use crate::parser::util::blank_line;
@@ -54,15 +55,26 @@ pub fn parse<'s>(input: &'s str) -> Result<Document<'s>, String> {
     let initial_context = ContextElement::document_context();
     let initial_context = Context::new(&global_settings, List::new(&initial_context));
     let wrapped_input = OrgSource::new(input);
-    let ret = all_consuming(parser_with_context!(document)(&initial_context))(wrapped_input)
-        .map_err(|err| err.to_string())
-        .map(|(_remaining, parsed_document)| parsed_document);
+    let ret =
+        all_consuming(parser_with_context!(document_org_source)(&initial_context))(wrapped_input)
+            .map_err(|err| err.to_string())
+            .map(|(_remaining, parsed_document)| parsed_document);
     ret
 }
 
 #[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
 #[allow(dead_code)]
 pub fn document<'b, 'g, 'r, 's>(
+    context: RefContext<'b, 'g, 'r, 's>,
+    input: &'s str,
+) -> Res<&'s str, Document<'s>> {
+    let (remaining, doc) = document_org_source(context, input.into()).map_err(convert_error)?;
+    Ok((Into::<&str>::into(remaining), doc))
+}
+
+#[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
+#[allow(dead_code)]
+fn document_org_source<'b, 'g, 'r, 's>(
     context: RefContext<'b, 'g, 'r, 's>,
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, Document<'s>> {