Enum Content 

#[non_exhaustive]
pub enum Content {
    Text {
        text: String,
        provider_metadata: Option<ProviderMetadata>,
    },
    Reasoning {
        text: String,
        provider_metadata: Option<ProviderMetadata>,
    },
    ReasoningFile {
        data: FileData,
        media_type: MediaType,
        provider_metadata: Option<ProviderMetadata>,
    },
    File {
        data: FileData,
        media_type: MediaType,
        filename: Option<String>,
        provider_metadata: Option<ProviderMetadata>,
    },
    Custom {
        kind: CustomKind,
        provider_metadata: Option<ProviderMetadata>,
    },
    Source(Source),
    ToolCall(ToolCall),
    ToolResult(ProviderToolResult),
    ToolApprovalRequest {
        approval_id: ApprovalId,
        tool_call_id: ToolCallId,
        provider_metadata: Option<ProviderMetadata>,
    },
}

A content part of a generation result, tagged by type.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Text

Generated text.

Fields

text: String

The text.

provider_metadata: Option<ProviderMetadata>

Provider-specific metadata.

Reasoning

Reasoning text.

Fields

text: String

The reasoning text.

provider_metadata: Option<ProviderMetadata>

Provider-specific metadata (signatures, encrypted state, …).

ReasoningFile

A reasoning artifact stored as a file.

Fields

data: FileData

File payload (inline bytes or URL).

media_type: MediaType

Media type of the payload.

provider_metadata: Option<ProviderMetadata>

Provider-specific metadata.

File

A generated file (image, audio, …).

Fields

data: FileData

File payload (inline bytes or URL).

media_type: MediaType

Media type of the payload.

filename: Option<String>

Optional file name.

provider_metadata: Option<ProviderMetadata>

Provider-specific metadata.

Custom

Provider-specific content identified by a provider.type kind.

Fields

kind: CustomKind

Kind of the content.

provider_metadata: Option<ProviderMetadata>

Provider-specific metadata carrying the payload.

Source(Source)

A citation source.

ToolCall(ToolCall)

A tool call requested by the model.

ToolResult(ProviderToolResult)

The result of a provider-executed tool.

ToolApprovalRequest

The provider asks for approval before executing a tool call.

Fields

approval_id: ApprovalId

Identifier of the approval request.

tool_call_id: ToolCallId

Identifier of the tool call awaiting approval.

provider_metadata: Option<ProviderMetadata>

Provider-specific metadata.

Implementations

impl Content

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

Creates a text part without metadata.

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

Creates a reasoning part without metadata.

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

Returns the text of a Content::Text part.

pub fn as_tool_call(&self) -> Option<&ToolCall>

Returns the tool call of a Content::ToolCall part.

pub fn kind_name(&self) -> &'static str

Returns the wire name of the variant (text, tool-call, …).

Trait Implementations

impl Clone for Content

fn clone(&self) -> Content

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Content

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Content

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Content

fn eq(&self, other: &Content) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for Content

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 Content