Enum CompressionPlanError 

pub enum CompressionPlanError {
    ExposureGateNotMet {
        usage_percent: f64,
        trigger_percent: u8,
    },
    NoActiveMessages,
    NotEnoughMessages {
        non_system_count: usize,
    },
    NothingToCompress {
        anchor_index: usize,
        non_system_count: usize,
    },
    ProtectedContentExceedsTarget {
        projected_tokens: u32,
        target_tokens: u32,
    },
    CandidateSetChanged,
    MessageSummaryToolProtocol {
        reason: String,
    },
    EmptyMessageSummary,
    SummaryExceedsTarget {
        projected_tokens: u32,
        target_tokens: u32,
    },
}

Structured reason why a compression plan could not be built.

Variants

ExposureGateNotMet

The exposure gate (threshold not reached) prevented building.

Fields

usage_percent: f64

trigger_percent: u8

NoActiveMessages

No active messages in the session.

NotEnoughMessages

Not enough non-system messages to compress (need >=3).

Fields

non_system_count: usize

NothingToCompress

Nothing to compress after anchor/keep splitting.

Fields

anchor_index: usize

non_system_count: usize

ProtectedContentExceedsTarget

Eligible history was exhausted while protected/recent content still kept the active prompt above the configured post-compression target.

Fields

projected_tokens: u32

target_tokens: u32

CandidateSetChanged

The session changed after candidate selection and before finalization.

MessageSummaryToolProtocol

Message-only compression must never archive a partial or protected tool chain.

Fields

reason: String

EmptyMessageSummary

A message-only summary may be empty only when no prose is represented.

SummaryExceedsTarget

The real generated summary was larger than the source-derived reserve, so applying the candidate set would miss the post-compression target.

Fields

projected_tokens: u32

target_tokens: u32

Trait Implementations

impl Clone for CompressionPlanError

fn clone(&self) -> CompressionPlanError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompressionPlanError

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

Formats the value using the given formatter.

impl Display for CompressionPlanError

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

Formats the value using the given formatter.