Enum ContentBlock 

pub enum ContentBlock {
    Text(TextBlock),
    ToolCall(ToolCall),
    ToolResult(ToolResult),
    Thinking(ThinkingBlock),
}

A single piece of content within a Message.

Messages are made of heterogeneous blocks because modern LLMs interleave natural language, tool invocations, tool outputs, and reasoning traces within a single turn.

Variants

Text(TextBlock)

Natural-language text.

ToolCall(ToolCall)

A request from the assistant to invoke a tool.

ToolResult(ToolResult)

The result of having invoked a tool.

Thinking(ThinkingBlock)

A reasoning trace emitted by a thinking-capable model.

Implementations

impl ContentBlock

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

Create a new text block.

pub fn tool_call( id: impl Into<String>, name: impl Into<String>, arguments: Value, ) -> Self

Create a new tool call block.

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

Create a new tool result block.

pub fn thinking( text: impl Into<String>, signature: Option<impl Into<String>>, is_redacted: bool, ) -> Self

Create a new thinking block.

Trait Implementations

impl Clone for ContentBlock

fn clone(&self) -> ContentBlock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContentBlock

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ContentBlock

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ContentBlock

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

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 ContentBlock