Enum ContentBlock 

pub enum ContentBlock {
    Text {
        text: String,
    },
    Thinking {
        thinking: String,
    },
    RedactedThinking {
        data: Option<String>,
    },
    ToolUse {
        id: String,
        name: String,
        input: Value,
    },
    ToolResult {
        tool_use_id: Option<String>,
        content: Value,
    },
    Image {
        source: Value,
    },
    InputText {
        text: String,
    },
    OutputText {
        text: String,
    },
    InputImage {
        extra: BTreeMap<String, Value>,
    },
    Fallback {
        extra: BTreeMap<String, Value>,
    },
    Unknown,
}

A content block that may carry text, used by both formats’ message bodies. Unknown block types are preserved by tag in ContentBlock::Unknown.

Variants

Text

Plain text.

Fields

text: String

The text.

Thinking

Anthropic reasoning block (not replayable across providers).

Fields

thinking: String

The (possibly empty) thinking text.

RedactedThinking

Anthropic redacted reasoning.

Fields

data: Option<String>

Opaque payload.

ToolUse

An assistant tool call (Anthropic shape).

Fields

id: String

Provider call id.

name: String

Tool name.

input: Value

Arguments object.

ToolResult

A tool result (Anthropic shape).

Fields

tool_use_id: Option<String>

The id of the tool_use this answers.

content: Value

String or array-of-blocks content.

Image

An image block (multimodal).

Fields

source: Value

The image source descriptor.

InputText

Codex input text block.

Fields

text: String

The text.

OutputText

Codex output text block.

Fields

text: String

The text.

InputImage

Codex input image block.

Fields

extra: BTreeMap<String, Value>

Opaque image reference.

Fallback

PARITY-11 (provenance P011): a Claude provider-routing note — real shape {"type":"fallback","from":{"model":..},"to":{"model":..}}, a mid-generation model swap (e.g. an overloaded model falling back to another). session.rs’s loader folds it into a short bracketed text marker rather than dropping it.

Fields

extra: BTreeMap<String, Value>

Anything (from/to model descriptors).

Unknown

Any block type we do not model yet. The tag is recovered via ContentBlock::unknown_tag from the captured fields.

Implementations

impl ContentBlock

pub fn tag(&self) -> Option<&'static str>

Returns the static discriminant name for a modeled block, or None for ContentBlock::Unknown.

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

Best-effort flattened text from a block (text-bearing variants only).

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<(), Error>

Formats the value using the given formatter.

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

fn deserialize<__D>( __deserializer: __D, ) -> Result<ContentBlock, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.