Enum ModelDelta 

pub enum ModelDelta {
    Text(Arc<str>),
    ToolCall(ToolCall),
}

One item of the streaming protocol between a LanguageModel and LmStage: a text delta to append, or one complete tool call.

Not a pipeline frame. Provider-specific streaming formats, tool-call fragments, and constrained-output parsing are assembled inside the implementation; the stage sees only normalized text and complete tool calls, and turns them into ModelFrames. Every item is a cancellation and barge-in preemption point.

Variants

Text(Arc<str>)

Text to append to the current assistant response.

ToolCall(ToolCall)

One complete model tool call.

Implementations

impl ModelDelta

pub fn tool_call( id: impl Into<Arc<str>>, name: impl Into<Arc<str>>, arguments: Value, ) -> Result<Self, LmError>

Build a ToolCall delta from structured arguments, giving adapters a JSON-value API while the core frame keeps a dependency-free JSON-text representation.

Fails if id or name is empty, if arguments is not a JSON object, or if serializing the validated object fails.

Trait Implementations

impl Clone for ModelDelta

fn clone(&self) -> ModelDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ModelDelta

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

Formats the value using the given formatter.

impl PartialEq for ModelDelta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ModelDelta