Enum PartialMessageEvent 

pub enum PartialMessageEvent {
    BlockStart {
        index: u32,
        block_type: BlockType,
    },
    BlockDelta {
        index: u32,
        delta: BlockDelta,
    },
    BlockStop {
        index: u32,
    },
}

A decoded partial-message event from a streaming claude call.

Surfaced by StreamEvent::partial_message when --include-partial-messages is set. The three variants correspond to the Anthropic streaming content-block lifecycle: a block starts, gets one or more deltas, then stops.

Variants

BlockStart

A new content block is starting. block_type says what kind.

Fields

index: u32

Position of this block within the assistant message.

block_type: BlockType

What kind of block is starting (text, thinking, tool use, …).

BlockDelta

Incremental content for an in-progress block.

Fields

index: u32

Index of the block this delta applies to (matches a prior BlockStart).

delta: BlockDelta

The incremental payload.

BlockStop

The block at index is complete.

Fields

index: u32

Index of the block that just finished.

Trait Implementations

impl Clone for PartialMessageEvent

fn clone(&self) -> PartialMessageEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PartialMessageEvent

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

Formats the value using the given formatter.

impl PartialEq for PartialMessageEvent

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for PartialMessageEvent

impl StructuralPartialEq for PartialMessageEvent