Trait TranslationBackend 

pub trait TranslationBackend: Send + Sync {
    // Required method
    fn translate_batch<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 self,
        texts: &'life1 [String],
        target: &'life2 Lang,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<String>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;

    // Provided methods
    fn id(&self) -> &'static str { ... }
    fn supports(&self, target: &Lang) -> bool { ... }
}

A machine-translation backend for free-form text.

Implement this to plug a custom engine (e.g. a hosted translation API) into the translation pipeline via set_backend. The built-in offline backend (feature translation-offline) is used by default when no custom backend is registered.

Inputs are English; implementations must return one translated string per input, preserving order. Inputs may contain multiple sentences.

Required Methods

fn translate_batch<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, texts: &'life1 [String], target: &'life2 Lang, ) -> Pin<Box<dyn Future<Output = Result<Vec<String>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Translate every English text into the target language, preserving order.

Provided Methods

fn id(&self) -> &'static str

Identifier used in logs and errors.

fn supports(&self, target: &Lang) -> bool

Whether this backend can translate into target.

The pipeline calls this before translate_batch; when it returns false the free-form text is left untranslated (English) instead of failing the request. Defaults to true (assume full support).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors