Struct TrackerTokenUsage 

pub struct TrackerTokenUsage {
    pub prompt_tokens: usize,
    pub completion_tokens: usize,
    pub total_tokens: usize,
}

Token 用量统计（计数器模块内部类型）

注意：language_models::TokenUsage 是 LLM API 返回的用量（字段为 usize）， 此 TrackerTokenUsage 是本地追踪累计用量，字段同为 usize，两者可互转 而无精度损失（Q6：统一底层类型，不再存在 usize vs u32 的命名冲突）。 这里不使用 TokenUsage 别名，避免与 language_models::TokenUsage 混淆。

Fields

prompt_tokens: usize

completion_tokens: usize

total_tokens: usize

Implementations

impl TrackerTokenUsage

pub fn new() -> Self

pub fn add(&mut self, prompt: usize, completion: usize)

累加用量

pub fn reset(&mut self)

Trait Implementations

impl Clone for TrackerTokenUsage

fn clone(&self) -> TrackerTokenUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TrackerTokenUsage

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

Formats the value using the given formatter.

impl Default for TrackerTokenUsage

fn default() -> TrackerTokenUsage

Returns the “default value” for a type.

impl PartialEq for TrackerTokenUsage

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TrackerTokenUsage