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Represent TraitBoundModifiers as distinct parts in HIR

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This commit is contained in:
Michael Goulet
2024-10-20 20:35:18 +00:00
parent 86d69c705a
commit febb3f7c88
18 changed files with 116 additions and 117 deletions
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14
compiler/rustc_hir_pretty/src/lib.rs
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@@ -16,7 +16,6 @@ use rustc_ast_pretty::pprust::{Comments, PrintState};
use rustc_hir::{
BindingMode, ByRef, ConstArgKind, GenericArg, GenericBound, GenericParam, GenericParamKind,
HirId, LifetimeParamKind, Node, PatKind, PreciseCapturingArg, RangeEnd, Term,
TraitBoundModifier,
};
use rustc_span::FileName;
use rustc_span::source_map::SourceMap;
@@ -676,9 +675,16 @@ impl<'a> State<'a> {
}
fn print_poly_trait_ref(&mut self, t: &hir::PolyTraitRef<'_>) {
// FIXME: This isn't correct!
if t.modifiers == TraitBoundModifier::Maybe {
self.word("?");
let hir::TraitBoundModifiers { constness, polarity } = t.modifiers;
match constness {
hir::BoundConstness::Never => {}
hir::BoundConstness::Always(_) => self.word("const"),
hir::BoundConstness::Maybe(_) => self.word("~const"),
}
match polarity {
hir::BoundPolarity::Positive => {}
hir::BoundPolarity::Negative(_) => self.word("!"),
hir::BoundPolarity::Maybe(_) => self.word("?"),
}
self.print_formal_generic_params(t.bound_generic_params);
self.print_trait_ref(&t.trait_ref);