Implement Generator and Future
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@@ -138,6 +138,16 @@ pub(super) trait GoalKind<'tcx>: TypeFoldable<'tcx> + Copy + Eq {
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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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fn consider_builtin_future_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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fn consider_builtin_generator_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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}
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impl<'tcx> EvalCtxt<'_, 'tcx> {
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@@ -266,6 +276,10 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
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G::consider_builtin_tuple_candidate(self, goal)
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} else if lang_items.pointee_trait() == Some(trait_def_id) {
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G::consider_builtin_pointee_candidate(self, goal)
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} else if lang_items.future_trait() == Some(trait_def_id) {
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G::consider_builtin_future_candidate(self, goal)
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} else if lang_items.gen_trait() == Some(trait_def_id) {
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G::consider_builtin_generator_candidate(self, goal)
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} else {
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Err(NoSolution)
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};
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