Enum StopReason 

pub enum StopReason {
    Complete,
    MaxIterationsReached,
    Cancelled,
    OutputBudgetExceeded,
    ReasoningBudgetExceeded,
}

Agent loop 停止原因 — 描述“为什么停止“，而非“响应长什么样“

Variants

Complete

Agent 已获得最终答案并正常结束

MaxIterationsReached

达到最大轮次

Cancelled

外部取消（消费者断开、task 终止等）

OutputBudgetExceeded

输出预算超限（单轮或总输出 token 超过限制）

ReasoningBudgetExceeded

推理预算超限（thinking token 超过限制）

Trait Implementations

impl Clone for StopReason

fn clone(&self) -> StopReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StopReason

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StopReason

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for StopReason

impl PartialEq for StopReason

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for StopReason

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for StopReason