Enum StreamDelta 

pub enum StreamDelta {
    Text(String),
    Thinking(String),
    Sync,
}

Stable since 0.63.0

Typed incremental delta for [`AgentEvent::MessageUpdate`].

Replaces the former Option<String> which conflated text and thinking deltas. Consumers can now distinguish what kind of content changed.

Variants

Text(String)

Regular text output from the assistant.

Thinking(String)

Thinking/reasoning content from a reasoning model.

Sync

Non-text structural change (e.g. a tool call was finalized). Consumers should re-render from message rather than appending.

Implementations

impl StreamDelta

pub fn as_text(&self) -> Option<&str>

Returns the text content if this is a Text or Thinking delta.

pub fn has_text(&self) -> bool

Returns true if this delta carries text content (Text or Thinking).

Trait Implementations

impl Clone for StreamDelta

fn clone(&self) -> StreamDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamDelta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StreamDelta

fn deserialize<__D>( __deserializer: __D, ) -> Result<StreamDelta, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for StreamDelta

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

where __S: Serializer,

Serialize this value into the given Serde serializer.