Enum AssistantMessageDelta 

pub enum AssistantMessageDelta {
    Text {
        content_index: usize,
        delta: Cow<'static, str>,
    },
    Thinking {
        content_index: usize,
        delta: Cow<'static, str>,
    },
    ToolCall {
        content_index: usize,
        delta: Cow<'static, str>,
    },
}

A typed incremental update during streaming, used in MessageUpdate events.

The delta field uses Cow<'static, str> to avoid cloning on the hot path when the caller can transfer ownership of the underlying String.

Variants

Text

An appended text string fragment.

Fields

content_index: usize

delta: Cow<'static, str>

Thinking

An appended reasoning fragment.

Fields

content_index: usize

delta: Cow<'static, str>

ToolCall

An appended JSON argument fragment for a tool call.

Fields

content_index: usize

delta: Cow<'static, str>

Trait Implementations

impl Clone for AssistantMessageDelta

fn clone(&self) -> AssistantMessageDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AssistantMessageDelta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AssistantMessageDelta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for AssistantMessageDelta

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

where __S: Serializer,

Serialize this value into the given Serde serializer.