Struct spirit::fragment::driver::RefDriver

pub struct RefDriver<Inner>(_);

An adaptor Driver for references.

This is used behind the scenes to wrap a driver for F to create a driver for &F.

Implementations

impl<Inner> RefDriver<Inner>

pub fn new(inner: Inner) -> Self

Creates the driver.

It is available to support also drivers that are provided and created by the user. Usually, the Default implementation is used within the Fragment.

Trait Implementations

impl<Inner: Debug> Debug for RefDriver<Inner>

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

Formats the value using the given formatter.

impl<Inner: Default> Default for RefDriver<Inner>

fn default() -> RefDriver<Inner>

Returns the "default value" for a type.

impl<'a, F: Fragment, Inner: Driver<F>> Driver<&'a F> for RefDriver<Inner>

type SubFragment = Inner::SubFragment

The smaller Fragment the driver cuts F into.

fn instructions<T, I>(
    &mut self,
    fragment: &&F,
    transform: &mut T,
    name: &'static str
) -> Result<Vec<Instruction<T::OutputResource>>, Vec<AnyError>> where
    T: Transformation<<Self::SubFragment as Fragment>::Resource, I, Self::SubFragment>, 

Issues the instructions how to transition to the new fragment.

fn confirm(&mut self, name: &'static str)

Call to this method informs the Driver that the instructions returned by the last call to instructions were followed and the changes have taken place.

fn abort(&mut self, name: &'static str)

Call to this method informs the Driver that the instructions returned by the last call to instructions were not followed and were dropped.

fn maybe_cached(&self, fragment: &&F, name: &'static str) -> bool

Informs if there's a chance the new fragment will use something in the Driver's cache if applied.