Enum CompletionDelta 

pub enum CompletionDelta {
    Text(String),
    Thinking(String),
    ToolUseStart {
        id: String,
        name: String,
    },
    ToolArgs(String),
}

One incremental piece of a streaming completion (ADR-0021), normalized across wires — the display-oriented side channel of crate::Provider::stream.

This is display-only: crate::Provider::stream still returns the same whole Completion (assembled via ToolCallAssembler), so tool dispatch and history are unaffected. The parts mirror what the wires actually stream (text/reasoning on distinct channels; tool name/id early, args as a raw partial-JSON channel that is never parsed here — see ADR-0021’s granularity table).

Variants

Text(String)

A fragment of assistant text.

Thinking(String)

A fragment of reasoning/thinking text (its own channel).

ToolUseStart

A tool call has started — name + id are known early (before args stream).

Fields

id: String

The tool_use id.

name: String

The client-facing tool name.

ToolArgs(String)

A raw partial-JSON fragment of the current tool call’s arguments. Not valid JSON in isolation — display-only; the call is assembled and parsed once at its finalize boundary.

Trait Implementations

impl Clone for CompletionDelta

fn clone(&self) -> CompletionDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompletionDelta

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

Formats the value using the given formatter.

impl Eq for CompletionDelta

impl PartialEq for CompletionDelta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CompletionDelta