diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/rust/typecheck/rust-tyty-bounds.cc | 69 |
1 files changed, 62 insertions, 7 deletions
diff --git a/gcc/rust/typecheck/rust-tyty-bounds.cc b/gcc/rust/typecheck/rust-tyty-bounds.cc index 1a2ed3b..20a81ad 100644 --- a/gcc/rust/typecheck/rust-tyty-bounds.cc +++ b/gcc/rust/typecheck/rust-tyty-bounds.cc @@ -84,16 +84,71 @@ TypeCheckBase::get_predicate_from_bound (HIR::TypePath &type_path) = HIR::GenericArgs::create_empty (type_path.get_locus ()); auto &final_seg = type_path.get_final_segment (); - if (final_seg->is_generic_segment ()) + switch (final_seg->get_type ()) { - auto final_generic_seg - = static_cast<HIR::TypePathSegmentGeneric *> (final_seg.get ()); - if (final_generic_seg->has_generic_args ()) - { - args = final_generic_seg->get_generic_args (); - } + case HIR::TypePathSegment::SegmentType::GENERIC: { + auto final_generic_seg + = static_cast<HIR::TypePathSegmentGeneric *> (final_seg.get ()); + if (final_generic_seg->has_generic_args ()) + { + args = final_generic_seg->get_generic_args (); + } + } + break; + + case HIR::TypePathSegment::SegmentType::FUNCTION: { + auto final_function_seg + = static_cast<HIR::TypePathSegmentFunction *> (final_seg.get ()); + auto &fn = final_function_seg->get_function_path (); + + // we need to make implicit generic args which must be an implicit Tuple + auto crate_num = mappings->get_current_crate (); + HirId implicit_args_id = mappings->get_next_hir_id (); + Analysis::NodeMapping mapping (crate_num, + final_seg->get_mappings ().get_nodeid (), + implicit_args_id, UNKNOWN_LOCAL_DEFID); + + std::vector<std::unique_ptr<HIR::Type>> params_copy; + for (auto &p : fn.get_params ()) + { + params_copy.push_back (p->clone_type ()); + } + + HIR::TupleType *implicit_tuple + = new HIR::TupleType (mapping, std::move (params_copy), + final_seg->get_locus ()); + + std::vector<std::unique_ptr<HIR::Type>> inputs; + inputs.push_back (std::unique_ptr<HIR::Type> (implicit_tuple)); + + args = HIR::GenericArgs ({} /* lifetimes */, + std::move (inputs) /* type_args*/, + {} /* binding_args*/, {} /* const_args */, + final_seg->get_locus ()); + + // resolve the fn_once_output type + TyTy::BaseType *fn_once_output_ty + = fn.has_return_type () + ? TypeCheckType::Resolve (fn.get_return_type ().get ()) + : TyTy::TupleType::get_unit_type ( + final_seg->get_mappings ().get_hirid ()); + context->insert_implicit_type (final_seg->get_mappings ().get_hirid (), + fn_once_output_ty); + + // setup the associated type.. ?? + // fn_once_output_ty->debug (); + } + break; + + default: + /* nothing to do */ + break; } + // FIXME + // I think this should really be just be if the !args.is_empty() because + // someone might wrongly apply generic arguments where they should not and + // they will be missing error diagnostics if (predicate.requires_generic_args ()) { // this is applying generic arguments to a trait reference |