Enum Message 

pub enum Message {
    System {
        content: Content,
        name: Option<String>,
    },
    User {
        content: Content,
        name: Option<String>,
    },
    Assistant {
        content: Option<Content>,
        name: Option<String>,
        reasoning_content: Option<String>,
        tool_calls: Option<Vec<ToolCall>>,
    },
    Tool {
        content: Content,
        tool_call_id: Option<String>,
    },
    Function {
        content: Content,
        name: Option<String>,
    },
}

Chat message objects.

Variants

System

System message, usually instructions for the model to respond in a certain way.

Fields

content: Content

System prompt content.

name: Option<String>

A unique identifier representing your end-user.

User

User message, typically request from user for the model to answer.

Fields

content: Content

User prompt content.

name: Option<String>

A unique identifier representing your end-user.

Assistant

Assistant role message, previous chat messages from the model.

Fields

content: Option<Content>

Assistant prompt content.

name: Option<String>

A unique identifier representing your end-user.

reasoning_content: Option<String>

Assistant reasoning content.

tool_calls: Option<Vec<ToolCall>>

An array of tool calls available to the model.

Tool

Tool call role message, used to return function call result to the model.

Fields

content: Content

Content of the tool call result.

tool_call_id: Option<String>

The ID of the tool call received from assistant message response.

Function

Function call role message. Deprecated in favor of tool.

Fields

content: Content

Content of the tool call result.

name: Option<String>

A unique identifier representing your end-user.

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Message

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

Formats the value using the given formatter.

impl Default for Message

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Message

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Message

fn eq(&self, other: &Message) -> 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 Serialize for Message

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 Message