Enum LifecycleEvent 

pub enum LifecycleEvent {
    PreCompact {
        messages: usize,
        dropped: usize,
        manual: bool,
    },
    PostCompact {
        messages: usize,
        dropped: usize,
    },
    SubagentStart {
        task: String,
    },
    SubagentStop {
        task: String,
        is_error: bool,
        output_len: usize,
    },
}

A loop lifecycle moment an embedder may observe (BP-11, catalog “Lifecycle hooks, config-registered”): the compaction and subagent boundaries the CLI’s pre_compact/post_compact/subagent_start/ subagent_stop hook events are fired from. Observational only — a lifecycle hook can never veto the moment it observes.

Variants

PreCompact

The live window is about to be compacted: dropped messages in [first, cut) collapse into one marker; manual is a /compact.

Fields

messages: usize

Messages in the window before compaction.

dropped: usize

Messages about to be collapsed into the marker.

manual: bool

true for /compact, false for an automatic trigger.

PostCompact

Compaction finished; the window now holds messages entries.

Fields

messages: usize

Messages in the window after compaction.

dropped: usize

Messages that were collapsed.

SubagentStart

A spawn_subagent call passed validation and is about to run.

Fields

task: String

The task text the child was given.

SubagentStop

The spawn_subagent call returned (is_error is the tool result’s flag).

Fields

task: String

The task text the child was given.

is_error: bool

Whether the child’s result was an error.

output_len: usize

Byte length of the result handed back to the parent.

Trait Implementations

impl Clone for LifecycleEvent

fn clone(&self) -> LifecycleEvent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LifecycleEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for LifecycleEvent

impl PartialEq for LifecycleEvent

fn eq(&self, other: &LifecycleEvent) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LifecycleEvent