Add a DocumentRoot context element storing the original full document.

This might be used for look-behind instead of storing previous element nodes in the context tree.

src/parser/util.rs

@@ -1,15 +1,24 @@
 use super::parser_context::ContextElement;
 use super::Context;
 
+/// Check if we are below a section of the given section type regardless of depth
 pub fn in_section<'r, 's, 'x>(context: Context<'r, 's>, section_name: &'x str) -> bool {
     for thing in context.iter() {
         match thing.get_data() {
-            ContextElement::ExitMatcherNode(_) => {}
-            ContextElement::PreviousElementNode(_) => {}
             ContextElement::Context(name) if *name == section_name => return true,
-            ContextElement::Context(_) => {}
-            ContextElement::StartOfParagraph => {} // TODO: If we specialize this to bold then this would be a good spot to stop scanning
-            ContextElement::ListItem(_) => {}
+            _ => {}
+        }
+    }
+    false
+}
+
+/// Checks if we are currently an immediate child of the given section type
+pub fn immediate_in_section<'r, 's, 'x>(context: Context<'r, 's>, section_name: &'x str) -> bool {
+    for thing in context.iter() {
+        match thing.get_data() {
+            ContextElement::Context(name) if *name == section_name => return true,
+            ContextElement::Context(name) if *name != section_name => return false,
+            _ => {}
         }
     }
     false