Struct Message 

pub struct Message {
    pub role: Role,
    pub content: Vec<Content>,
    pub response_metadata: Option<ResponseMetadata>,
}

Conversation message with role and content blocks.

Fields

role: Role

Role of the message sender.

content: Vec<Content>

Content blocks (text, images, tool use, tool results).

response_metadata: Option<ResponseMetadata>

Provider-specific response metadata (safety ratings, grounding, citations).

Implementations

impl Message

pub fn new(role: Role, text: impl Into<String>) -> Self

Create a new message with a single text content block.

pub fn with_content(role: Role, content: Vec<Content>) -> Self

Create a message with multiple content blocks.

pub fn with_metadata( role: Role, content: Vec<Content>, metadata: ResponseMetadata, ) -> Self

Create a message with content and metadata.

pub fn system(text: impl Into<String>) -> Self

Create a system message with text content.

pub fn user(text: impl Into<String>) -> Self

Create a user message with text content.

pub fn assistant(text: impl Into<String>) -> Self

Create an assistant message with text content.

pub fn tool_result( tool_use_id: impl Into<String>, content: impl Into<String>, is_error: bool, ) -> Self

Create a user message with a tool result.

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 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 StructuralPartialEq for Message