Enum MessageRole 

pub enum MessageRole {
    User,
    Agent,
}

The author of a Message.

The two values are the spec’s exhaustive list. A message is either from the user (the human or the calling system) or from the agent (the A2A server). There is no “system” role in v1.0.

Variants

User

The message was sent by the user (the human or the calling system on the human’s behalf).

Agent

The message was sent by the agent (the A2A server, in response to a previous user message or proactively).

Trait Implementations

impl Clone for MessageRole

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MessageRole

impl Debug for MessageRole

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

Formats the value using the given formatter.

impl Default for MessageRole

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MessageRole

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MessageRole

impl PartialEq for MessageRole

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for MessageRole

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 MessageRole