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Auto and alias traits

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This commit is contained in:
Michael Goulet
2023-01-17 20:16:30 +00:00
parent 3d87a8e848
commit 45aa5c0f90
4 changed files with 171 additions and 23 deletions
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28
compiler/rustc_trait_selection/src/solve/project_goals.rs
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@@ -290,13 +290,6 @@ impl<'tcx> assembly::GoalKind<'tcx> for ProjectionPredicate<'tcx> {
})
}
fn consider_builtin_sized_candidate(
_ecx: &mut EvalCtxt<'_, 'tcx>,
goal: Goal<'tcx, Self>,
) -> QueryResult<'tcx> {
bug!("`Sized` does not have an associated type: {:?}", goal);
}
fn consider_assumption(
ecx: &mut EvalCtxt<'_, 'tcx>,
goal: Goal<'tcx, Self>,
@@ -333,6 +326,27 @@ impl<'tcx> assembly::GoalKind<'tcx> for ProjectionPredicate<'tcx> {
Err(NoSolution)
}
}
fn consider_auto_trait_candidate(
_ecx: &mut EvalCtxt<'_, 'tcx>,
goal: Goal<'tcx, Self>,
) -> QueryResult<'tcx> {
bug!("auto traits do not have associated types: {:?}", goal);
}
fn consider_trait_alias_candidate(
_ecx: &mut EvalCtxt<'_, 'tcx>,
goal: Goal<'tcx, Self>,
) -> QueryResult<'tcx> {
bug!("trait aliases do not have associated types: {:?}", goal);
}
fn consider_builtin_sized_candidate(
_ecx: &mut EvalCtxt<'_, 'tcx>,
goal: Goal<'tcx, Self>,
) -> QueryResult<'tcx> {
bug!("`Sized` does not have an associated type: {:?}", goal);
}
}
/// This behavior is also implemented in `rustc_ty_utils` and in the old `project` code.