Enum Role 

pub enum Role {
    System,
    User,
    Assistant,
    Tool,
}

Conversation role for CONVERSATION blocks.

Maps the four standard chat roles to single-byte wire values. Unlike Lang, this enum does not have an Other variant — unrecognized role bytes produce an error, since role semantics are fundamental to conversation structure.

┌──────┬───────────┐
│ Wire │ Role      │
├──────┼───────────┤
│ 0x01 │ System    │
│ 0x02 │ User      │
│ 0x03 │ Assistant │
│ 0x04 │ Tool      │
└──────┴───────────┘

Variants

System

User

Assistant

Tool

Implementations

impl Role

pub fn to_wire_byte(self) -> u8

Encode this variant as a single wire byte.

pub fn from_wire_byte(value: u8) -> Result<Self, TypeError>

Decode a wire byte into this enum.

Returns Err(TypeError::InvalidEnumValue) if the byte doesn’t match any known variant.

Trait Implementations

impl Clone for Role

fn clone(&self) -> Role

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Role

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

Formats the value using the given formatter.

impl PartialEq for Role

fn eq(&self, other: &Role) -> 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 Copy for Role

impl Eq for Role

impl StructuralPartialEq for Role