comparison rust/hg-core/src/dirstate_tree/dirstate_map.rs @ 47474:c657beacdf2e

dirstate-v2: Drop cached read_dir results after .hgignore changes

Soon we’ll want the status algorithm to be able to skip `std::fs::read_dir` in
more cases, notabling when listing unknown files but not ignored files.

When ignore patterns change (which we detect by their hash, added to the
dirstate-v2 format in a previous changeset), a formerly-ignored file could
become unknown without changing its parent directory’s modification time.
Therefore we remove any directory mtime from the dirstate, effictively
invalidating the existing caches.

Differential Revision: https://phab.mercurial-scm.org/D10907

47473:5045ba2a3afd

                }
            } else {
                return Ok(None);
            }
        }
    }

    pub(super) fn get_or_insert_node<'tree, 'path>(
        on_disk: &'on_disk [u8],
        root: &'tree mut ChildNodes<'on_disk>,

47474:c657beacdf2e

                }
            } else {
                return Ok(None);
            }
        }
    }

    pub(super) fn get_or_insert<'tree, 'path>(
        &'tree mut self,
        path: &HgPath,
    ) -> Result<&'tree mut Node<'on_disk>, DirstateV2ParseError> {
        Self::get_or_insert_node(
            self.on_disk,
            &mut self.root,
            path,
            WithBasename::to_cow_owned,
            |_| {},
        )
    }

    pub(super) fn get_or_insert_node<'tree, 'path>(
        on_disk: &'on_disk [u8],
        root: &'tree mut ChildNodes<'on_disk>,