c5ee60e05b
This allows removing the names from Adt and FnDef (and more later), as a first step towards aligning more with chalk's Ty :)
57 lines
1.3 KiB
Rust
57 lines
1.3 KiB
Rust
use std::fmt;
|
|
|
|
use crate::db::HirDatabase;
|
|
|
|
pub struct HirFormatter<'a, 'b, DB> {
|
|
pub db: &'a DB,
|
|
fmt: &'a mut fmt::Formatter<'b>,
|
|
}
|
|
|
|
pub trait HirDisplay {
|
|
fn hir_fmt(&self, f: &mut HirFormatter<impl HirDatabase>) -> fmt::Result;
|
|
fn display<'a, DB>(&'a self, db: &'a DB) -> HirDisplayWrapper<'a, DB, Self>
|
|
where
|
|
Self: Sized,
|
|
{
|
|
HirDisplayWrapper(db, self)
|
|
}
|
|
}
|
|
|
|
impl<'a, 'b, DB> HirFormatter<'a, 'b, DB>
|
|
where
|
|
DB: HirDatabase,
|
|
{
|
|
pub fn write_joined<T: HirDisplay>(
|
|
&mut self,
|
|
iter: impl IntoIterator<Item = T>,
|
|
sep: &str,
|
|
) -> fmt::Result {
|
|
let mut first = true;
|
|
for e in iter {
|
|
if !first {
|
|
write!(self, "{}", sep)?;
|
|
}
|
|
first = false;
|
|
e.hir_fmt(self)?;
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
/// This allows using the `write!` macro directly with a `HirFormatter`.
|
|
pub fn write_fmt(&mut self, args: fmt::Arguments) -> fmt::Result {
|
|
fmt::write(self.fmt, args)
|
|
}
|
|
}
|
|
|
|
pub struct HirDisplayWrapper<'a, DB, T>(&'a DB, &'a T);
|
|
|
|
impl<'a, DB, T> fmt::Display for HirDisplayWrapper<'a, DB, T>
|
|
where
|
|
DB: HirDatabase,
|
|
T: HirDisplay,
|
|
{
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
self.1.hir_fmt(&mut HirFormatter { db: self.0, fmt: f })
|
|
}
|
|
}
|