[gemma4] update parser logic

skillls/parser.py

@@ -44,12 +44,16 @@ class SkillParser:
 
     def _traverse_tree(
         self, 
-        node, 
+        root_node, 
         content: str, 
         diagnostics: list[Diagnostic], 
         symbols: list[DocumentSymbol]
     ) -> None:
-        """Recursively traverses the AST to find errors and symbols."""
+        """Iteratively traverses the AST to find errors and symbols."""
+        stack = [root_node]
+
+        while stack:
+            node = stack.pop()
             
             # 1. Handle Errors (Diagnostics)
             if node.type in ERROR_NODE_TYPES:
@@ -73,9 +77,9 @@ class SkillParser:
                 if symbol:
                     symbols.append(symbol)
 
-        # 3. Continue traversal
-        for child in node.children:
-            self._traverse_tree(child, content, diagnostics, symbols)
+            # 3. Continue traversal - push children in reverse order to maintain original DFS order
+            for child in reversed(node.children):
+                stack.append(child)
 
     def _is_symbol_node(self, node) -> bool:
         """Determines if a node is significant enough to be an outline symbol."""