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use std::fmt::*;
pub trait Format<What> {
fn fmt(&self, w: &What, f: &mut Formatter) -> Result;
}
pub struct PrintAs<G, P>(pub G, pub P);
pub struct PrintRefAs<'a, G: 'a, P>(pub &'a G, pub P);
impl<G, P> Debug for PrintAs<G, P>
where
P: Format<G>,
{
fn fmt(&self, f: &mut Formatter) -> Result {
self.1.fmt(&self.0, f)
}
}
impl<'a, G, P> Debug for PrintRefAs<'a, G, P>
where
P: Format<G>,
{
fn fmt(&self, f: &mut Formatter) -> Result {
self.1.fmt(self.0, f)
}
}
impl<G, P: Default> From<G> for PrintAs<G, P> {
fn from(g: G) -> PrintAs<G, P> {
PrintAs(g.into(), P::default())
}
}
impl<G, P> ::std::ops::Deref for PrintAs<G, P> {
type Target = G;
fn deref(&self) -> &G {
&self.0
}
}
impl<G, P> ::std::ops::DerefMut for PrintAs<G, P> {
fn deref_mut(&mut self) -> &mut G {
&mut self.0
}
}