refactor: use component IDs as keys for slot fill llokup

src/django_components/node.py

@@ -0,0 +1,38 @@
+from typing import Callable
+
+from django.template.base import Node, NodeList, TextNode
+from django.template.defaulttags import CommentNode
+
+
+def nodelist_has_content(nodelist: NodeList) -> bool:
+    for node in nodelist:
+        if isinstance(node, TextNode) and node.s.isspace():
+            pass
+        elif isinstance(node, CommentNode):
+            pass
+        else:
+            return True
+    return False
+
+
+def walk_nodelist(nodes: NodeList, callback: Callable[[Node], None]) -> None:
+    """Recursively walk a NodeList, calling `callback` for each Node."""
+    node_queue = [*nodes]
+    while len(node_queue):
+        node: Node = node_queue.pop()
+        callback(node)
+        node_queue.extend(get_node_children(node))
+
+
+def get_node_children(node: Node) -> NodeList:
+    """
+    Get child Nodes from Node's nodelist atribute.
+
+    This function is taken from `get_nodes_by_type` method of `django.template.base.Node`.
+    """
+    nodes = NodeList()
+    for attr in node.child_nodelists:
+        nodelist = getattr(node, attr, [])
+        if nodelist:
+            nodes.extend(nodelist)
+    return nodes