Struct TokenUsage 

pub struct TokenUsage {
    pub prompt_tokens: u32,
    pub completion_tokens: u32,
    pub total_tokens: u32,
}

Token consumption reported by a single LLM generation call.

Fields

prompt_tokens: u32

Tokens consumed by the prompt (input side).

completion_tokens: u32

Tokens produced in the completion (output side).

total_tokens: u32

prompt_tokens + completion_tokens.

Implementations

impl TokenUsage

pub fn combine(&self, other: &TokenUsage) -> TokenUsage

Combine two TokenUsage records by summing each field.

Useful when aggregating usage across multiple LLM calls in one chain run.

Example

use rune_chain_core::TokenUsage;

let a = TokenUsage { prompt_tokens: 10, completion_tokens: 20, total_tokens: 30 };
let b = TokenUsage { prompt_tokens: 5,  completion_tokens: 8,  total_tokens: 13 };
let combined = a.combine(&b);
assert_eq!(combined.total_tokens, 43);

Trait Implementations

impl Clone for TokenUsage

fn clone(&self) -> TokenUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TokenUsage

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

Formats the value using the given formatter.

impl Default for TokenUsage

fn default() -> TokenUsage

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TokenUsage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TokenUsage

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

where __S: Serializer,

Serialize this value into the given Serde serializer.