Struct TokenDelta 

pub struct TokenDelta {
    pub source: TokenSource,
    pub model: String,
    pub prompt_tokens: usize,
    pub completion_tokens: usize,
    pub duration_ms: u64,
}

A single token-consumption delta observed during session processing.

One TokenDelta is emitted per LLM round-trip (root or RLM), allowing downstream consumers to maintain per-model and per-source counters without re-reading the full session history.

Examples

use codetether_agent::session::{TokenDelta, TokenSource};

let delta = TokenDelta {
    source: TokenSource::Root,
    model: "gpt-4o".to_string(),
    prompt_tokens: 1_200,
    completion_tokens: 340,
    duration_ms: 820,
};
assert_eq!(delta.total(), 1_540);

Fields

source: TokenSource

What kind of call produced this delta.

model: String

Provider-qualified model identifier (e.g. "anthropic/claude-opus-4-7").

prompt_tokens: usize

Prompt tokens consumed.

completion_tokens: usize

Completion tokens produced.

duration_ms: u64

Wall-clock round-trip in milliseconds.

Implementations

impl TokenDelta

pub fn total(&self) -> usize

Sum of prompt and completion tokens.

Examples

use codetether_agent::session::{TokenDelta, TokenSource};

let d = TokenDelta {
    source: TokenSource::Root,
    model: "m".into(),
    prompt_tokens: 10,
    completion_tokens: 5,
    duration_ms: 0,
};
assert_eq!(d.total(), 15);

Trait Implementations

impl Clone for TokenDelta

fn clone(&self) -> TokenDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TokenDelta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TokenDelta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TokenDelta

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

where __S: Serializer,

Serialize this value into the given Serde serializer.