Enum Completion 

pub enum Completion {
    Boundary,
    Deadline,
    Oversized,
}

一条记录怎么被封口的 —— 下游据此判它可不可信。

Variants

Boundary

下一个边界信号到来 —— 记录的边界是确定的，内容完整。

Deadline

到期封口（空闲 / 来源变化 / 停机）—— 内容完整，但边界是推断的。

Oversized

到上限被截 —— 内容可能不全，下游要当心（解析失败不该归罪于格式）。

Trait Implementations

impl Clone for Completion

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Completion

impl Debug for Completion

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Completion

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Completion

impl PartialEq for Completion

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Completion

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 Completion