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make Repr of TraitRef more useful

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This commit is contained in:
Ariel Ben-Yehuda 2015-04-14 21:09:59 +03:00
parent ce27d024ff
commit 6a95d90b86
1 changed files with 7 additions and 4 deletions
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11
src/librustc/util/ppaux.rs
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@ -810,8 +810,12 @@ impl<'tcx> Repr<'tcx> for ty::TraitRef<'tcx> {
// to enumerate the `for<...>` etc because the debruijn index
// tells you everything you need to know.
let base = ty::item_path_str(tcx, self.def_id);
parameterized(tcx, &base, self.substs, self.def_id, &[],
|| ty::lookup_trait_def(tcx, self.def_id).generics.clone())
let result = parameterized(tcx, &base, self.substs, self.def_id, &[],
|| ty::lookup_trait_def(tcx, self.def_id).generics.clone());
match self.substs.self_ty() {
None => result,
Some(sty) => format!("<{} as {}>", sty.repr(tcx), result)
}
}
}
@ -1504,8 +1508,7 @@ impl<'tcx> UserString<'tcx> for ty::ProjectionPredicate<'tcx> {
impl<'tcx> Repr<'tcx> for ty::ProjectionTy<'tcx> {
fn repr(&self, tcx: &ctxt<'tcx>) -> String {
format!("<{} as {}>::{}",
self.trait_ref.substs.self_ty().repr(tcx),
format!("{}::{}",
self.trait_ref.repr(tcx),
self.item_name.repr(tcx))
}