Enum StreamEvent 

pub enum StreamEvent {
    Start {
        partial: AssistantMessage,
    },
    TextStart {
        content_index: usize,
    },
    TextDelta {
        content_index: usize,
        delta: String,
    },
    TextEnd {
        content_index: usize,
        content: String,
    },
    ThinkingStart {
        content_index: usize,
    },
    ThinkingDelta {
        content_index: usize,
        delta: String,
    },
    ThinkingEnd {
        content_index: usize,
        content: String,
    },
    ToolCallStart {
        content_index: usize,
        id: String,
        name: String,
    },
    ToolCallDelta {
        content_index: usize,
        delta: String,
    },
    ToolCallEnd {
        content_index: usize,
        tool_call: ToolCall,
    },
    Done {
        reason: StopReason,
        message: AssistantMessage,
    },
    Error {
        reason: StopReason,
        error: AssistantMessage,
    },
}

Streaming event from a provider.

Provider implementations emit this enum while decoding SSE/HTTP streams.

Variants

Start

Fields

partial: AssistantMessage

TextStart

Fields

content_index: usize

TextDelta

Fields

content_index: usize

delta: String

TextEnd

Fields

content_index: usize

content: String

ThinkingStart

Fields

content_index: usize

ThinkingDelta

Fields

content_index: usize

delta: String

ThinkingEnd

Fields

content_index: usize

content: String

ToolCallStart

A tool-call content block opened. id/name carry whatever the provider already knows at this point (most providers send both on the opening chunk); empty strings mean “not known yet” and the terminal StreamEvent::ToolCallEnd still carries the authoritative values. Populating them here lets snapshot clients (RPC/ACP) correlate the growing partial with the later tool-execution events (#129).

Fields

content_index: usize

id: String

name: String

ToolCallDelta

Fields

content_index: usize

delta: String

ToolCallEnd

Fields

content_index: usize

tool_call: ToolCall

Done

Fields

reason: StopReason

message: AssistantMessage

Error

Fields

reason: StopReason

error: AssistantMessage

Trait Implementations

impl Clone for StreamEvent

fn clone(&self) -> StreamEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamEvent

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

Formats the value using the given formatter.