Struct HistoryLog
pub struct HistoryLog { /* private fields */ }Expand description
What HistorySource::entries_since has read of one document. Start
with HistoryLog::default and hand the same log back on every call;
it holds a replica of the document as of its last read.
Implementations§
§impl HistoryLog
impl HistoryLog
pub const fn changes_read(&self) -> usize
pub const fn changes_read(&self) -> usize
How many changes this log has read so far, from scratch or appended: what a reader that should read each change once can be held to.
pub fn change(&self, id: &HistoryEntryId) -> Option<(ChangeHash, &[ChangeHash])>
pub fn change(&self, id: &HistoryEntryId) -> Option<(ChangeHash, &[ChangeHash])>
The hash and dependencies of the change behind id, when this log
has read it.
pub fn heads_for_entry(&self, id: &HistoryEntryId) -> Option<Vec<ChangeHash>>
pub fn heads_for_entry(&self, id: &HistoryEntryId) -> Option<Vec<ChangeHash>>
The document’s heads as of the change behind id: what
super::heads_for_entry answers for the document last read.
Trait Implementations§
§impl Default for HistoryLog
impl Default for HistoryLog
§fn default() -> HistoryLog
fn default() -> HistoryLog
Returns the “default value” for a type. Read more
Auto Trait Implementations§
impl Freeze for HistoryLog
impl RefUnwindSafe for HistoryLog
impl Send for HistoryLog
impl Sync for HistoryLog
impl Unpin for HistoryLog
impl UnsafeUnpin for HistoryLog
impl UnwindSafe for HistoryLog
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