/// Generic trait to enable chainable API
pub trait With: Sized {
/// Calls the given closure and return the result.
///
/// Used to chainify wrapper constructors.
fn wrap_with<U, F: FnOnce(Self) -> U>(self, f: F) -> U {
f(self)
}
/// Calls the given closure on `self`.
fn with<F: FnOnce(&mut Self)>(mut self, f: F) -> Self {
f(&mut self);
self
}
/// Calls the given closure on `self`.
fn try_with<E, F>(mut self, f: F) -> Result<Self, E>
where
F: FnOnce(&mut Self) -> Result<(), E>,
{
f(&mut self)?;
Ok(self)
}
/// Calls the given closure if `condition == true`.
fn with_if<F>(mut self, condition: bool, f: F) -> Self
where
F: FnOnce(&mut Self),
{
if condition {
f(&mut self);
}
self
}
}
impl<T: Sized> With for T {}