Module folder_ancestry 

Ancestor folder-chain resolution for crate::drive::write_gate (issue #1574).

Impure sibling to write_gate — mirrors crate::drive::file_move’s role relative to crate::drive::visibility: this module does the fetching, write_gate does the (pure) classifying.

Structs

AncestorChain

A target folder’s resolved ancestor chain.

Functions

resolve_ancestor_chain

Walks start_folder_id → parent → grandparent → … via files.get, stopping at Drive’s root (a folder with no parents).

resolve_decision

Resolves op against start_folder_id’s ancestor chain under rules, walking one files.get at a time and stopping as soon as some depth decides it.

resolve_decision_for_parents

Resolves op against parents (a target’s current parent ids).

resolve_decision_from

resolve_decision, but for a caller that already has the starting folder’s metadata in hand.