Struct FrameStack 

pub struct FrameStack<S: WorkflowState = State>
where
    S::Checkpoint: Debug,
{ /* private fields */ }

帧栈 — 保存完整的执行位置历史。

可序列化 — 用于 SessionCheckpoint 持久化。

Implementations

impl<S: WorkflowState> FrameStack<S>

where S::Checkpoint: Debug,

pub fn new() -> Self

创建空的帧栈。

pub fn push(&mut self, frame: Frame<S>)

Push 一个新帧。

pub fn pop(&mut self) -> Option<Frame<S>>

Pop 最后一个帧。

pub fn current(&self) -> Option<&Frame<S>>

获取当前帧（最顶层）。

pub fn depth(&self) -> usize

获取帧数量。

pub fn is_empty(&self) -> bool

检查是否为空。

pub fn frames(&self) -> &[Frame<S>]

获取所有帧的引用。

Trait Implementations

impl<S: Clone + WorkflowState> Clone for FrameStack<S>

where S::Checkpoint: Debug,

fn clone(&self) -> FrameStack<S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: WorkflowState> Debug for FrameStack<S>

where S::Checkpoint: Debug,

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

Formats the value using the given formatter.

impl<S: WorkflowState> Default for FrameStack<S>

where S::Checkpoint: Debug,

fn default() -> Self

Returns the “default value” for a type.

impl<'de, S> Deserialize<'de> for FrameStack<S>

where S::Checkpoint: Debug, S: Deserialize<'de> + WorkflowState,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<S> Serialize for FrameStack<S>

where S::Checkpoint: Debug, S: Serialize + WorkflowState,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.