Enum MessageItem 

pub enum MessageItem {
    Output(OutputMessage),
    Input(InputMessage),
}

A message item used within the Item enum.

Both InputMessage and OutputMessage have type: "message", so we use an untagged enum to distinguish them based on their structure:

• OutputMessage: role=assistant, required id & status fields
• InputMessage: role=user/system/developer, content is Vec, optional id/status

Note: EasyInputMessage is NOT included here - it’s a separate variant in InputItem, not part of the structured Item enum.

Variants

Output(OutputMessage)

An output message from the model (role: assistant, has required id & status). This must come first as it has the most specific structure (required id and status fields).

Input(InputMessage)

A structured input message (role: user/system/developer, content is Vec). Has structured content list and optional id/status fields.

A message input to the model with a role indicating instruction following hierarchy. Instructions given with the developer or system role take precedence over instructions given with the user role.

Trait Implementations

impl Clone for MessageItem

fn clone(&self) -> MessageItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MessageItem

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MessageItem

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MessageItem

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

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 MessageItem