penzai.treescope.foldable_representation.common_structures.fake_placeholder_foldable(placeholder_content: RenderableTreePart, extra_newlines_guess: int) FoldableTreeNode[source]#

Builds a fake placeholder for deferred renderings.

The main use for this is is to return as the placeholder for a deferred rendering, so that it can participate in layout decisions. The get_expand_state method can be used to infer whether the part was collapsed while deferred.

  • placeholder_content – The content of the placeholder to render.

  • extra_newlines_guess – The number of fake newlines to pretend this object has.


A foldable node that does not have any actual content, but pretends to contain the given number of newlines for layout decisions.