Enum ChatRole 

#[non_exhaustive]
pub enum ChatRole {
    System,
    User,
    Assistant,
    Tool,
}

The role of a participant in a conversation.

Most conversations follow the pattern System → User → Assistant, with ChatRole::Tool appearing only when the assistant invokes a tool and the caller feeds back the result.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

System

Sets behavioral instructions for the assistant. Typically the first message in a conversation; not all providers surface it as a discrete message (some use a separate system parameter).

User

A message from the human user.

Assistant

A message generated by the model.

Tool

A tool result fed back to the model after it made a tool call.

Trait Implementations

impl Clone for ChatRole

fn clone(&self) -> ChatRole

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChatRole

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ChatRole

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ChatRole

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

Formats the value using the given formatter.

impl Hash for ChatRole

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ChatRole

fn eq(&self, other: &ChatRole) -> 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 ChatRole

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ChatRole

impl Eq for ChatRole

impl StructuralPartialEq for ChatRole