Going to try switching to boxed owned values to remove the template.

src/renderer/breadcrumb_tree.rs

@@ -7,17 +7,17 @@ pub trait BreadcrumbTree {
     fn get_parent(&self) -> Option<&dyn BreadcrumbTree>;
 }
 
-pub struct BreadcrumbTreeNode<'a, C: IntoContextElement> {
+pub struct BreadcrumbTreeNode<'a> {
     parent: Option<&'a dyn BreadcrumbTree>,
-    element: BreadcrumbTreeNodeElement<'a, C>,
+    element: BreadcrumbTreeNodeElement<'a>,
 }
 
-pub enum BreadcrumbTreeNodeElement<'a, C: IntoContextElement> {
-    Owned(C),
-    Borrowed(&'a C),
+pub enum BreadcrumbTreeNodeElement<'a> {
+    Owned(Box<dyn IntoContextElement>),
+    Borrowed(&'a dyn IntoContextElement),
 }
 
-impl<'a, C: IntoContextElement> BreadcrumbTreeNode<'a, C> {
+impl<'a> BreadcrumbTreeNode<'a> {
     pub fn ice_iter(&'a self) -> impl Iterator<Item = &dyn IntoContextElement> {
         self.breadcrumb_iter().map(|b| b.get_ice())
     }
@@ -27,18 +27,16 @@ impl<'a, C: IntoContextElement> BreadcrumbTreeNode<'a, C> {
     }
 }
 
-impl<'a, C: IntoContextElement> Borrow<dyn IntoContextElement + 'a>
-    for BreadcrumbTreeNodeElement<'a, C>
-{
+impl<'a> Borrow<dyn IntoContextElement + 'a> for BreadcrumbTreeNodeElement<'a> {
     fn borrow(&self) -> &(dyn IntoContextElement + 'a) {
         match self {
-            BreadcrumbTreeNodeElement::Owned(ice) => ice,
+            BreadcrumbTreeNodeElement::Owned(ice) => ice.as_ref(),
             BreadcrumbTreeNodeElement::Borrowed(ice) => *ice,
         }
     }
 }
 
-impl<'a, C: IntoContextElement> BreadcrumbTree for BreadcrumbTreeNode<'a, C> {
+impl<'a> BreadcrumbTree for BreadcrumbTreeNode<'a> {
     fn get_ice(&self) -> &dyn IntoContextElement {
         self.element.borrow()
     }
@@ -48,7 +46,7 @@ impl<'a, C: IntoContextElement> BreadcrumbTree for BreadcrumbTreeNode<'a, C> {
     }
 }
 
-impl<'a, C: IntoContextElement> IntoIterator for &'a BreadcrumbTreeNode<'a, C> {
+impl<'a> IntoIterator for &'a BreadcrumbTreeNode<'a> {
     type Item = &'a dyn BreadcrumbTree;
     type IntoIter = BreadcrumbTreeIterator<'a>;
 

src/renderer/tree_renderer.rs

@@ -44,44 +44,44 @@ impl<'a> DustRenderer<'a> {
             .insert(template.name.clone(), &template.template);
     }
 
-    fn new_breadcrumbs_section<'b, B>(
-        &self,
-        maybe_breadcrumbs: Option<&'a BreadcrumbTreeNode<B>>,
-        index_context: Option<&'b dyn IntoContextElement>,
-        injected_context: Option<&'b dyn IntoContextElement>,
-        explicit_context: &Option<Path<'b>>,
-        new_context_element: Option<&'b dyn ContextElement>,
-    ) -> Option<&'a BreadcrumbTreeNode<B>>
-    where
-        B: IntoContextElement,
-    {
-        // If there is no new content, return the original breadcrumbs
-        match (
-            index_context,
-            injected_context,
-            explicit_context,
-            new_context_element,
-        ) {
-            (None, None, None, None) => return maybe_breadcrumbs,
-            _ => (),
-        }
+    // fn new_breadcrumbs_section<'b, B>(
+    //     &self,
+    //     maybe_breadcrumbs: Option<&'a BreadcrumbTreeNode<B>>,
+    //     index_context: Option<&'b dyn IntoContextElement>,
+    //     injected_context: Option<&'b dyn IntoContextElement>,
+    //     explicit_context: &Option<Path<'b>>,
+    //     new_context_element: Option<&'b dyn ContextElement>,
+    // ) -> Option<&'a BreadcrumbTreeNode<B>>
+    // where
+    //     B: IntoContextElement,
+    // {
+    //     // If there is no new content, return the original breadcrumbs
+    //     match (
+    //         index_context,
+    //         injected_context,
+    //         explicit_context,
+    //         new_context_element,
+    //     ) {
+    //         (None, None, None, None) => return maybe_breadcrumbs,
+    //         _ => (),
+    //     }
 
-        // If there is an explicit context, then drop all the current
-        // context
-        let mut new_stack = match explicit_context {
-            Some(_) => None,
-            None => maybe_breadcrumbs,
-        };
+    //     // If there is an explicit context, then drop all the current
+    //     // context
+    //     let mut new_stack = match explicit_context {
+    //         Some(_) => None,
+    //         None => maybe_breadcrumbs,
+    //     };
 
-        // TODO: Explicit context
-        injected_context.map(|ctx| {
-            new_stack = Some(BreadcrumbTreeNode {
-                parent: new_stack.map(|b| b as _),
-                element: BreadcrumbTreeNodeElement::Borrowed(ctx),
-            });
-            // TODO
-        });
+    //     // TODO: Explicit context
+    //     // injected_context.map(|ctx| {
+    //     //     new_stack = Some(BreadcrumbTreeNode {
+    //     //         parent: new_stack.map(|b| b as _),
+    //     //         element: BreadcrumbTreeNodeElement::Borrowed(ctx),
+    //     //     });
+    //     //     // TODO
+    //     // });
 
-        None
-    }
+    //     None
+    // }
 }

src/renderer/tree_walking.rs

@@ -38,24 +38,20 @@ where
     WalkResult::FullyWalked(output)
 }
 
-fn get_first_non_pseudo_element<'a, B>(
-    breadcrumbs: &'a BreadcrumbTreeNode<B>,
-) -> Option<&'a dyn BreadcrumbTree>
-where
-    B: IntoContextElement,
-{
+fn get_first_non_pseudo_element<'a>(
+    breadcrumbs: &'a BreadcrumbTreeNode,
+) -> Option<&'a dyn BreadcrumbTree> {
     breadcrumbs
         .breadcrumb_iter()
         .filter(|b| b.get_ice().is_pseudo_element())
         .next()
 }
 
-pub fn walk_path<'a, B, P>(
-    maybe_breadcrumbs: Option<&'a BreadcrumbTreeNode<B>>,
+pub fn walk_path<'a, P>(
+    maybe_breadcrumbs: Option<&'a BreadcrumbTreeNode>,
     path: &Vec<P>,
 ) -> Result<&'a dyn IntoContextElement, WalkError>
 where
-    B: IntoContextElement,
     P: Borrow<str>,
 {
     match (maybe_breadcrumbs, path.first()) {