Module Sprockets::Engines
In: lib/sprockets/engines.rb

`Engines` provides a global and `Environment` instance registry.

An engine is a type of processor that is bound to an filename extension. `application.js.coffee` indicates that the `CoffeeScriptTemplate` engine will be ran on the file.

Extensions can be stacked and will be evaulated from right to left. `application.js.coffee.erb` will first run `ERBTemplate` then `CoffeeScriptTemplate`.

All `Engine`s must follow the `Tilt::Template` interface. It is recommended to subclass `Tilt::Template`.

Its recommended that you register engine changes on your local `Environment` instance.

    environment.register_engine '.foo', FooProcessor

The global registry is exposed for plugins to register themselves.

    Sprockets.register_engine '.sass', SassTemplate

Methods

Public Instance methods

Returns an `Array` of engine extension `String`s.

    environment.engine_extensions
    # => ['.coffee', '.sass', ...]

Returns an `Array` of `Engine`s registered on the `Environment`. If an `ext` argument is supplied, the `Engine` register under that extension will be returned.

    environment.engines
    # => [CoffeeScriptTemplate, SassTemplate, ...]

    environment.engines('.coffee')
    # => CoffeeScriptTemplate

Registers a new Engine `klass` for `ext`. If the `ext` already has an engine registered, it will be overridden.

    environment.register_engine '.coffee', CoffeeScriptTemplate

[Validate]