- Fehlerkorrektur

DHParser/ebnf.py

@@ -93,7 +93,7 @@ from DHParser import logging, is_filename, load_if_file, \\
     Node, TransformationFunc, TransformationDict, transformation_factory, traverse, \\
     remove_children_if, move_adjacent, normalize_whitespace, is_anonymous, matches_re, \\
     reduce_single_child, replace_by_single_child, replace_or_reduce, remove_whitespace, \\
-    remove_empty, remove_tokens, flatten, is_insignificant_whitespace, \\
+    replace_by_children, remove_empty, remove_tokens, flatten, is_insignificant_whitespace, \\
     collapse, collapse_if, replace_content, WHITESPACE_PTYPE, TOKEN_PTYPE, \\
     remove_nodes, remove_content, remove_brackets, change_tag_name, remove_anonymous_tokens, \\
     keep_children, is_one_of, not_one_of, has_content, apply_if, remove_first, remove_last, \\

DHParser/transform.py

@@ -631,11 +631,15 @@ def replace_by_single_child(context: List[Node]):
 def replace_by_children(context: List[Node]):
     """
     Eliminates the last node in the context by replacing it with its children.
-    The attributes of this node will be dropped.
+    The attributes of this node will be dropped. In case the last node is
+    the root-note (i.e. len(context) == 1), it will not be eliminated.
     """
+    try:
+        parent = context[-2]
+    except IndexError:
+        return
     node = context[-1]
     assert node.children
-    parent = context[-2]
     result = parent.result
     i = result.index(node)
     parent.result = result[:i] + node.children + result[i + 1:]