Struct ContextAssessment 

pub struct ContextAssessment {
    pub provider_window: u64,
    pub breakdown: ContextBreakdown,
    pub reserves: ContextReserves,
    pub history_messages: usize,
    pub anchored_tokens: Option<u64>,
}

One request-aware budget assessment. Pure data — frontends read the decision, they never recompute it.

Fields

provider_window: u64

breakdown: ContextBreakdown

reserves: ContextReserves

history_messages: usize

anchored_tokens: Option<u64>

Footprint measured from the provider’s count of an earlier request this one extends (UsageAnchor); None = estimate only.

Implementations

impl ContextAssessment

pub fn used_tokens(&self) -> u64

The request’s footprint: anchored to the provider’s last reported input when this request extends that one, otherwise the estimate.

pub fn estimated_tokens(&self) -> u64

Conservative estimate across every request segment, whether or not an anchor applies. Calibration samples and the fixed-part overhead of successor sizing are in these units.

pub fn fixed_tokens(&self) -> u64

The estimate of the request’s fixed part: system, tool schemas, skills and memory (everything but the messages and their framing).

pub fn anchored( self, anchor: Option<&UsageAnchor>, messages: &[SharedMessage], ) -> Self

Anchor this assessment to anchor when messages (the messages it assessed) extend the anchored request’s verbatim.

pub fn budget_tokens(&self) -> u64

Tokens the context may occupy after all reserves: window minus reserves, floored at zero (a window smaller than the reserves has no admissible context at all).

pub fn remaining_tokens(&self) -> u64

Remaining admissible capacity before the trigger fires.

pub fn should_compact(&self) -> bool

The single cross-frontend compaction trigger: usage reached the budget AND there is enough history for a summary to fold.

Trait Implementations

impl Clone for ContextAssessment

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ContextAssessment

impl Debug for ContextAssessment

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

Formats the value using the given formatter.

impl Eq for ContextAssessment

impl PartialEq for ContextAssessment

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ContextAssessment