Enum MessageContent 

pub enum MessageContent {
    Text(String),
    Blocks(Vec<ContentBlock>),
}

Message content that can be either a plain string or an array of content blocks.

Claude Code uses different formats depending on the message type:

• Initial user prompts: "content": "hello" (plain string)
• Tool results/complex messages: "content": [{"type": "text", "text": "..."}] (array)

Variants

Text(String)

Plain text content (used for simple user prompts)

Blocks(Vec<ContentBlock>)

Array of content blocks (used for tool results, assistant messages)

Implementations

impl MessageContent

pub fn text(&self) -> Option<&str>

Extract plain text from the content, if available. For Text variant, returns the string directly. For Blocks variant, finds the first text block and returns its content.

pub fn blocks(&self) -> Option<&[ContentBlock]>

Get content blocks, if this is the Blocks variant.

Trait Implementations

impl Clone for MessageContent

fn clone(&self) -> MessageContent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MessageContent

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

Formats the value using the given formatter.

impl PartialEq for MessageContent

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