Enum StreamedAssistantContent 

pub enum StreamedAssistantContent {
    Text(Text),
    ToolCall {
        tool_call: ToolCall,
        internal_call_id: String,
    },
    ToolCallDelta {
        internal_call_id: String,
        content: ToolCallDeltaContent,
    },
    Reasoning {
        reasoning: Reasoning,
        id: String,
    },
    ReasoningDelta {
        id: String,
        provider_id: Option<String>,
        reasoning: String,
    },
    Final(StreamFinal),
    Unknown(UnknownPayload),
}

Describes responses from a streamed provider response which is either text, a tool call or a final usage response.

Variants

Text(Text)

Text delta emitted by the assistant.

ToolCall

Complete tool call emitted by the assistant.

Fields

tool_call: ToolCall

internal_call_id: String

Rig-generated unique identifier for this tool call. Use this to correlate with ToolCallDelta events.

ToolCallDelta

Partial tool call data emitted by the assistant.

Fields

internal_call_id: String

Rig-generated correlator for this call: stable across the call’s fragments, matches the eventual StreamedAssistantContent::ToolCall, and unique per run. Provider-issued ids arrive on the completed ToolCall; no stream-internal key is ever rendered here.

content: ToolCallDeltaContent

Reasoning

Complete reasoning block emitted by the assistant.

Supersedes any prior StreamedAssistantContent::ReasoningDeltas carrying the same correlator id: render it as a replacement for the accumulated delta text, not an addition. The match key is this variant’s id, not Reasoning::id. The aggregated StreamingCompletionResponse::choice already applies this replacement.

Fields

reasoning: Reasoning

id: String

Rig-generated correlator: matches the id on this part’s prior StreamedAssistantContent::ReasoningDeltas and is unique per run. The durable provider handle is reasoning.id; this value never enters replayable history.

ReasoningDelta

Partial reasoning text emitted by the assistant.

Fields

id: String

Rig-generated correlator for the reasoning part this delta extends: stable across the part’s deltas and unique per run. Never a stream-internal key and never a fabricated provider value.

provider_id: Option<String>

The provider-issued reasoning item id, when one exists — the durable handle the aggregated Reasoning::id will carry (None on wires that issue no reasoning ids).

reasoning: String

Partial reasoning text.

Final(StreamFinal)

The provider’s normalized terminal record, if yielded by the stream.

Unknown(UnknownPayload)

A provider-native output item rig does not model, preserved verbatim — e.g. an OpenAI Responses hosted-tool result (web_search_call, file_search_call, computer_call, code_interpreter_call). It is yielded to the consumer for inspection/forwarding but is not added to the accumulated assistant message or persisted history. Kept last because the enum is #[serde(untagged)] and the transparent payload wrapper matches anything, so earlier (typed) variants must be tried first.

Implementations

impl StreamedAssistantContent

pub fn text(text: &str) -> Self

Create a text stream item.

pub fn final_response(res: StreamFinal) -> Self

Create a final response stream item.

Trait Implementations

impl Clone for StreamedAssistantContent

fn clone(&self) -> StreamedAssistantContent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamedAssistantContent

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StreamedAssistantContent

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for StreamedAssistantContent

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for StreamedAssistantContent

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 StreamedAssistantContent