Struct Delta 

pub struct Delta {
    pub role: Option<i32>,
    pub content: Option<String>,
    pub tool_calls: Vec<ToolCallDelta>,
    pub reasoning: Option<String>,
    pub reasoning_details: Vec<ReasoningDetail>,
}

Streaming SSE frame: data: <ChatCompletionChunk JSON>\n\n, terminated by the sentinel line data: \[DONE\].

Fields

role: Option<i32>

first chunk only

content: Option<String>

incremental text

tool_calls: Vec<ToolCallDelta>

reasoning: Option<String>

Incremental reasoning. reasoning is open text streamed token-by-token; reasoning_details carries structured open/hidden blocks (and their signatures) as they arrive (see ReasoningDetail).

reasoning_details: Vec<ReasoningDetail>

Implementations

impl Delta

pub fn role(&self) -> Role

Returns the enum value of role, or the default if the field is unset or set to an invalid enum value.

pub fn set_role(&mut self, value: Role)

Sets role to the provided enum value.

pub fn content(&self) -> &str

Returns the value of content, or the default value if content is unset.

pub fn reasoning(&self) -> &str

Returns the value of reasoning, or the default value if reasoning is unset.

Trait Implementations

impl Clone for Delta

fn clone(&self) -> Delta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Delta

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

Formats the value using the given formatter.

impl Default for Delta

fn default() -> Self

Returns the “default value” for a type.

impl Message for Delta

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Delta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Delta