Add a builtin FnPtr
trait
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7a0600714a
commit
0c13565ca6
20 changed files with 310 additions and 27 deletions
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@ -153,6 +153,12 @@ pub(super) trait GoalKind<'tcx>: TypeFoldable<TyCtxt<'tcx>> + Copy + Eq {
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goal: Goal<'tcx, Self>,
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) -> QueryResult<'tcx>;
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// A type is a `FnPtr` if it is of `FnPtr` type.
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fn consider_builtin_fn_ptr_trait_candidate(
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ecx: &mut EvalCtxt<'_, 'tcx>,
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goal: Goal<'tcx, Self>,
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) -> QueryResult<'tcx>;
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// A callable type (a closure, fn def, or fn ptr) is known to implement the `Fn<A>`
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// family of traits where `A` is given by the signature of the type.
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fn consider_builtin_fn_trait_candidates(
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@ -331,6 +337,8 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
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G::consider_builtin_copy_clone_candidate(self, goal)
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} else if lang_items.pointer_like() == Some(trait_def_id) {
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G::consider_builtin_pointer_like_candidate(self, goal)
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} else if lang_items.fn_ptr_trait() == Some(trait_def_id) {
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G::consider_builtin_fn_ptr_trait_candidate(self, goal)
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} else if let Some(kind) = self.tcx().fn_trait_kind_from_def_id(trait_def_id) {
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G::consider_builtin_fn_trait_candidates(self, goal, kind)
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} else if lang_items.tuple_trait() == Some(trait_def_id) {
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