Struct ContextMeter 

pub struct ContextMeter {
    pub prompt_chars: usize,
    pub memory_chars: usize,
    pub tools_chars: usize,
    pub attachments_chars: usize,
    pub transcript_chars: usize,
    pub max_tokens: u64,
}

Character counts per category of input that contributes to the model context window. All five categories are tracked separately so a UI can show where the budget is going.

Fields

prompt_chars: usize

memory_chars: usize

tools_chars: usize

attachments_chars: usize

transcript_chars: usize

max_tokens: u64

The model’s hard context limit, in tokens. Used by usage_ratio.

Implementations

impl ContextMeter

pub fn new(max_tokens: u64) -> Self

pub fn total_chars(&self) -> usize

pub fn estimated_tokens(&self) -> u64

pub fn usage_ratio(&self) -> f64

Fraction of the budget consumed, in [0.0, +inf). > 1.0 means the estimate already exceeds the limit.

pub fn should_compact(&self, reserve_tokens: u64) -> bool

True if compaction should be triggered. reserve_tokens is how much headroom callers want to keep for the next model response.

pub fn summary(&self) -> String

A human-readable one-liner, e.g. 42% (prompt 1.2k · transcript 5.3k …).

Trait Implementations

impl Clone for ContextMeter

fn clone(&self) -> ContextMeter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContextMeter

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

Formats the value using the given formatter.

impl Default for ContextMeter

fn default() -> ContextMeter

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ContextMeter

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ContextMeter

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.