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Diffstat (limited to 'crates/hir-ty/src/display.rs')
| -rw-r--r-- | crates/hir-ty/src/display.rs | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/crates/hir-ty/src/display.rs b/crates/hir-ty/src/display.rs index 7f0baf49da..a6602747ef 100644 --- a/crates/hir-ty/src/display.rs +++ b/crates/hir-ty/src/display.rs @@ -751,9 +751,19 @@ impl HirDisplay for Ty { } TyKind::BoundVar(idx) => idx.hir_fmt(f)?, TyKind::Dyn(dyn_ty) => { + // Reorder bounds to satisfy `write_bounds_like_dyn_trait()`'s expectation. + // FIXME: `Iterator::partition_in_place()` or `Vec::drain_filter()` may make it + // more efficient when either of them hits stable. + let mut bounds: SmallVec<[_; 4]> = + dyn_ty.bounds.skip_binders().iter(Interner).cloned().collect(); + let (auto_traits, others): (SmallVec<[_; 4]>, _) = + bounds.drain(1..).partition(|b| b.skip_binders().trait_id().is_some()); + bounds.extend(others); + bounds.extend(auto_traits); + write_bounds_like_dyn_trait_with_prefix( "dyn", - dyn_ty.bounds.skip_binders().interned(), + &bounds, SizedByDefault::NotSized, f, )?; |