LCOV - code coverage report
Current view: top level - gcc/rust/checks/errors/privacy - rust-visibility-resolver.cc (source / functions) Coverage Total Hit
Test: gcc.info Lines: 87.2 % 117 102
Test Date: 2026-07-11 15:47:05 Functions: 89.5 % 19 17
Legend: Lines:     hit not hit

            Line data    Source code
       1              : // Copyright (C) 2020-2026 Free Software Foundation, Inc.
       2              : 
       3              : // This file is part of GCC.
       4              : 
       5              : // GCC is free software; you can redistribute it and/or modify it under
       6              : // the terms of the GNU General Public License as published by the Free
       7              : // Software Foundation; either version 3, or (at your option) any later
       8              : // version.
       9              : 
      10              : // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      11              : // WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12              : // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      13              : // for more details.
      14              : 
      15              : // You should have received a copy of the GNU General Public License
      16              : // along with GCC; see the file COPYING3.  If not see
      17              : // <http://www.gnu.org/licenses/>.
      18              : 
      19              : #include "rust-visibility-resolver.h"
      20              : #include "rust-ast.h"
      21              : #include "rust-hir.h"
      22              : #include "rust-hir-item.h"
      23              : #include "rust-finalized-name-resolution-context.h"
      24              : #include "rust-rib.h"
      25              : 
      26              : namespace Rust {
      27              : namespace Privacy {
      28              : 
      29         4339 : VisibilityResolver::VisibilityResolver (
      30              :   Analysis::Mappings &mappings,
      31         4339 :   const Resolver2_0::FinalizedNameResolutionContext &resolver)
      32         4339 :   : mappings (mappings), resolver (resolver)
      33         4339 : {}
      34              : 
      35              : void
      36         4339 : VisibilityResolver::go (HIR::Crate &crate)
      37              : {
      38         4339 :   mappings.insert_visibility (crate.get_mappings ().get_nodeid (),
      39              :                               ModuleVisibility::create_public ());
      40              : 
      41         4339 :   current_module = crate.get_mappings ().get_defid ();
      42              : 
      43        22168 :   for (auto &item : crate.get_items ())
      44              :     {
      45        17829 :       if (item->get_hir_kind () == HIR::Node::VIS_ITEM)
      46              :         {
      47        17829 :           auto vis_item = static_cast<HIR::VisItem *> (item.get ());
      48        17829 :           vis_item->accept_vis (*this);
      49              :         }
      50              :     }
      51         4339 : }
      52              : 
      53              : bool
      54           16 : VisibilityResolver::resolve_module_path (const HIR::SimplePath &restriction,
      55              :                                          DefId &id)
      56              : {
      57              :   // We need, from the restriction, to figure out the actual Module it
      58              :   // belongs to.
      59              : 
      60           16 :   NodeId ast_node_id = restriction.get_mappings ().get_nodeid ();
      61              : 
      62           16 :   auto invalid_path
      63              :     = Error (restriction.get_locus (),
      64           16 :              "cannot use non-module path as privacy restrictor");
      65              : 
      66           16 :   NodeId ref_node_id;
      67           16 :   if (auto id = resolver.lookup (ast_node_id, Resolver2_0::Namespace::Types))
      68              :     {
      69           16 :       ref_node_id = *id;
      70              :     }
      71              :   else
      72              :     {
      73            0 :       invalid_path.emit ();
      74            0 :       return false;
      75              :     }
      76              :   // FIXME: Add a hint here if we can find the path in another scope, such as
      77              :   // a type or something else
      78              :   // TODO: For the hint, can we point to the original item's definition if
      79              :   // present?
      80              : 
      81           16 :   tl::optional<HirId> hid = mappings.lookup_node_to_hir (ref_node_id);
      82           16 :   rust_assert (hid.has_value ());
      83           16 :   auto ref = hid.value ();
      84              : 
      85           16 :   auto crate = mappings.get_ast_crate (mappings.get_current_crate ());
      86              : 
      87              :   // we may be dealing with pub(crate)
      88           16 :   if (ref_node_id == crate.get_node_id ())
      89              :     // FIXME: What do we do here? There isn't a DefId for the Crate, so can we
      90              :     // actually do anything?
      91              :     // We basically want to return true always but just when exporting export
      92              :     // these items as private?
      93              :     return true;
      94              : 
      95            8 :   if (auto module = mappings.lookup_module (ref))
      96              :     {
      97              :       // Fill in the resolved `DefId`
      98            8 :       id = module.value ()->get_mappings ().get_defid ();
      99              : 
     100            8 :       return true;
     101              :     }
     102            0 :   invalid_path.emit ();
     103            0 :   return false;
     104           16 : }
     105              : 
     106              : bool
     107        21341 : VisibilityResolver::resolve_visibility (const HIR::Visibility &visibility,
     108              :                                         ModuleVisibility &to_resolve)
     109              : {
     110        21341 :   switch (visibility.get_vis_type ())
     111              :     {
     112        14734 :     case HIR::Visibility::VisType::Private:
     113        14734 :       to_resolve = ModuleVisibility::create_restricted (current_module);
     114        14734 :       return true;
     115         6591 :     case HIR::Visibility::VisType::Public:
     116         6591 :       to_resolve = ModuleVisibility::create_public ();
     117         6591 :       return true;
     118           16 :     case HIR::Visibility::VisType::Restricted:
     119           16 :       {
     120              :         // FIXME: We also need to handle 2015 vs 2018 edition conflicts
     121           16 :         auto id = UNKNOWN_DEFID;
     122           16 :         auto result = resolve_module_path (visibility.get_path (), id);
     123           16 :         to_resolve = ModuleVisibility::create_restricted (id);
     124           16 :         return result;
     125              :       }
     126            0 :     default:
     127            0 :       rust_unreachable ();
     128              :       return false;
     129              :     }
     130              : }
     131              : 
     132              : void
     133        17096 : VisibilityResolver::resolve_and_update (const HIR::VisItem *item)
     134              : {
     135        17096 :   ModuleVisibility module_vis;
     136        17096 :   if (!resolve_visibility (item->get_visibility (), module_vis))
     137            0 :     return; // we will already have emitted errors
     138              : 
     139        17096 :   mappings.insert_visibility (item->get_mappings ().get_nodeid (), module_vis);
     140              : }
     141              : 
     142              : void
     143         1200 : VisibilityResolver::visit (HIR::Module &mod)
     144              : {
     145         1200 :   auto old_module = current_module;
     146         1200 :   current_module = mod.get_mappings ().get_defid ();
     147              : 
     148         5130 :   for (auto &item : mod.get_items ())
     149              :     {
     150         3930 :       if (item->get_hir_kind () == HIR::Node::VIS_ITEM)
     151              :         {
     152         3930 :           auto vis_item = static_cast<HIR::VisItem *> (item.get ());
     153         3930 :           vis_item->accept_vis (*this);
     154              :         }
     155              :     }
     156              : 
     157         1200 :   current_module = old_module;
     158         1200 : }
     159              : 
     160              : void
     161            0 : VisibilityResolver::visit (HIR::ExternCrate &)
     162            0 : {}
     163              : 
     164              : void
     165            0 : VisibilityResolver::visit (HIR::UseDeclaration &)
     166            0 : {}
     167              : 
     168              : void
     169        13168 : VisibilityResolver::visit (HIR::Function &func)
     170              : {
     171        13168 :   resolve_and_update (&func);
     172        13168 : }
     173              : 
     174              : void
     175         1235 : VisibilityResolver::visit (HIR::TypeAlias &type_alias)
     176              : {
     177         1235 :   resolve_and_update (&type_alias);
     178         1235 : }
     179              : 
     180              : void
     181         1377 : VisibilityResolver::visit (HIR::StructStruct &struct_item)
     182              : {
     183         1377 :   resolve_and_update (&struct_item);
     184         1377 : }
     185              : 
     186              : void
     187          797 : VisibilityResolver::visit (HIR::TupleStruct &tuple_struct)
     188              : {
     189          797 :   resolve_and_update (&tuple_struct);
     190          797 : }
     191              : 
     192              : void
     193          486 : VisibilityResolver::visit (HIR::Enum &enum_item)
     194              : {
     195          486 :   ModuleVisibility vis;
     196          486 :   if (!resolve_visibility (enum_item.get_visibility (), vis))
     197            0 :     return;
     198              : 
     199          486 :   mappings.insert_visibility (enum_item.get_mappings ().get_nodeid (), vis);
     200         1637 :   for (auto &variant : enum_item.get_variants ())
     201         1151 :     mappings.insert_visibility (variant->get_mappings ().get_nodeid (), vis);
     202              : }
     203              : 
     204              : void
     205          101 : VisibilityResolver::visit (HIR::Union &)
     206          101 : {}
     207              : 
     208              : void
     209          468 : VisibilityResolver::visit (HIR::ConstantItem &const_item)
     210              : {
     211          468 :   resolve_and_update (&const_item);
     212          468 : }
     213              : 
     214              : void
     215           51 : VisibilityResolver::visit (HIR::StaticItem &static_item)
     216              : {
     217           51 :   resolve_and_update (&static_item);
     218           51 : }
     219              : 
     220              : void
     221         3759 : VisibilityResolver::visit (HIR::Trait &trait)
     222              : {
     223         3759 :   ModuleVisibility vis;
     224         3759 :   if (!resolve_visibility (trait.get_visibility (), vis))
     225            0 :     return;
     226              : 
     227         3759 :   mappings.insert_visibility (trait.get_mappings ().get_nodeid (), vis);
     228         7013 :   for (auto &item : trait.get_trait_items ())
     229         3254 :     mappings.insert_visibility (item->get_mappings ().get_nodeid (), vis);
     230              : }
     231              : 
     232              : void
     233         5628 : VisibilityResolver::visit (HIR::ImplBlock &impl)
     234              : {
     235        13758 :   for (auto &item : impl.get_impl_items ())
     236              :     {
     237         8130 :       HIR::VisItem *vis_item;
     238         8130 :       switch (item->get_impl_item_type ())
     239              :         {
     240         6884 :         case HIR::ImplItem::FUNCTION:
     241         6884 :           vis_item = static_cast<HIR::Function *> (item.get ());
     242              :           break;
     243         1178 :         case HIR::ImplItem::TYPE_ALIAS:
     244         1178 :           vis_item = static_cast<HIR::TypeAlias *> (item.get ());
     245              :           break;
     246           68 :         case HIR::ImplItem::CONSTANT:
     247           68 :           vis_item = static_cast<HIR::ConstantItem *> (item.get ());
     248              :           break;
     249            0 :         default:
     250            0 :           rust_unreachable ();
     251         8130 :           return;
     252              :         }
     253         8130 :       vis_item->accept_vis (*this);
     254              :     }
     255         5628 : }
     256              : 
     257              : void
     258         1619 : VisibilityResolver::visit (HIR::ExternBlock &)
     259         1619 : {}
     260              : 
     261              : } // namespace Privacy
     262              : } // namespace Rust
        

Generated by: LCOV version 2.4-beta

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto,rust,m2 --enable-host-shared. GCC test suite is run with the built compiler.