Enum ProviderFormatter 

pub enum ProviderFormatter {
    OpenAIChat(OpenAIChatFormatter),
    OpenAIResponses(OpenAIResponsesFormatter),
    Anthropic(AnthropicFormatter),
    Gemini(GeminiFormatter),
    OpenAICompatible(OpenAICompatibleFormatter),
}

Static-dispatch formatter covering every provider family.

All formatter implementations are stateless zero-sized types, so heap-boxing one behind Box<dyn ProviderToolFormatter> buys nothing: the Box still allocates and every call pays a vtable lookup, while the wide pointer itself is 16 bytes (data + vtable). This enum holds the same ZSTs inline — one discriminant byte, no allocation — and its ProviderToolFormatter impl matches on the variant, giving the compiler a static call target per family.

Prefer formatter (which returns this enum) in new code. The Box<dyn ProviderToolFormatter> constructors below are kept for API compatibility and delegate to this enum internally.

Variants

OpenAIChat(OpenAIChatFormatter)

OpenAI Chat Completions API shape.

OpenAIResponses(OpenAIResponsesFormatter)

OpenAI Responses API shape.

Anthropic(AnthropicFormatter)

Anthropic Messages API shape.

Gemini(GeminiFormatter)

Google Gemini generateContent API shape.

OpenAICompatible(OpenAICompatibleFormatter)

Generic OpenAI-compatible Chat Completions shape.

Trait Implementations

impl Clone for ProviderFormatter

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProviderFormatter

impl Debug for ProviderFormatter

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

Formats the value using the given formatter.

impl Eq for ProviderFormatter

impl Hash for ProviderFormatter

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ProviderFormatter

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

Equality operator ==.

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

Inequality operator !=.

impl ProviderToolFormatter for ProviderFormatter

fn family(&self) -> ProviderFamily

Family this formatter belongs to (for diagnostics).

fn supported_extensions(&self) -> &'static [&'static str]

Provider extensions preserved by this formatter. Used by callers that want to validate that a particular extension (e.g. defer_loading) is supported before passing a tool through.

fn supports(&self, tool: &ToolDefinition) -> bool

Returns true when this formatter accepts the given tool type unchanged.

fn format_tools( &self, tools: &[ToolDefinition], model: &str, ) -> Result<Option<Value>, LLMError>

Format a slice of tool definitions into the wire-shape this provider expects.

impl StructuralPartialEq for ProviderFormatter