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: 2026-02-28 14:20:25 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-name-resolution-context.h"
      24              : 
      25              : namespace Rust {
      26              : namespace Privacy {
      27              : 
      28         4121 : VisibilityResolver::VisibilityResolver (
      29              :   Analysis::Mappings &mappings,
      30         4121 :   const Resolver2_0::NameResolutionContext &resolver)
      31         4121 :   : mappings (mappings), resolver (resolver)
      32         4121 : {}
      33              : 
      34              : void
      35         4121 : VisibilityResolver::go (HIR::Crate &crate)
      36              : {
      37         4121 :   mappings.insert_visibility (crate.get_mappings ().get_nodeid (),
      38              :                               ModuleVisibility::create_public ());
      39              : 
      40         4121 :   current_module = crate.get_mappings ().get_defid ();
      41              : 
      42        21141 :   for (auto &item : crate.get_items ())
      43              :     {
      44        17020 :       if (item->get_hir_kind () == HIR::Node::VIS_ITEM)
      45              :         {
      46        17020 :           auto vis_item = static_cast<HIR::VisItem *> (item.get ());
      47        17020 :           vis_item->accept_vis (*this);
      48              :         }
      49              :     }
      50         4121 : }
      51              : 
      52              : bool
      53           16 : VisibilityResolver::resolve_module_path (const HIR::SimplePath &restriction,
      54              :                                          DefId &id)
      55              : {
      56              :   // We need, from the restriction, to figure out the actual Module it
      57              :   // belongs to.
      58              : 
      59           16 :   NodeId ast_node_id = restriction.get_mappings ().get_nodeid ();
      60              : 
      61           16 :   auto invalid_path
      62              :     = Error (restriction.get_locus (),
      63           16 :              "cannot use non-module path as privacy restrictor");
      64              : 
      65           16 :   NodeId ref_node_id;
      66           16 :   if (auto id = resolver.lookup (ast_node_id))
      67              :     {
      68           16 :       ref_node_id = *id;
      69              :     }
      70              :   else
      71              :     {
      72            0 :       invalid_path.emit ();
      73            0 :       return false;
      74              :     }
      75              :   // FIXME: Add a hint here if we can find the path in another scope, such as
      76              :   // a type or something else
      77              :   // TODO: For the hint, can we point to the original item's definition if
      78              :   // present?
      79              : 
      80           16 :   tl::optional<HirId> hid = mappings.lookup_node_to_hir (ref_node_id);
      81           16 :   rust_assert (hid.has_value ());
      82           16 :   auto ref = hid.value ();
      83              : 
      84           16 :   auto crate = mappings.get_ast_crate (mappings.get_current_crate ());
      85              : 
      86              :   // we may be dealing with pub(crate)
      87           16 :   if (ref_node_id == crate.get_node_id ())
      88              :     // FIXME: What do we do here? There isn't a DefId for the Crate, so can we
      89              :     // actually do anything?
      90              :     // We basically want to return true always but just when exporting export
      91              :     // these items as private?
      92              :     return true;
      93              : 
      94            8 :   if (auto module = mappings.lookup_module (ref))
      95              :     {
      96              :       // Fill in the resolved `DefId`
      97            8 :       id = module.value ()->get_mappings ().get_defid ();
      98              : 
      99            8 :       return true;
     100              :     }
     101            0 :   invalid_path.emit ();
     102            0 :   return false;
     103           16 : }
     104              : 
     105              : bool
     106        20694 : VisibilityResolver::resolve_visibility (const HIR::Visibility &visibility,
     107              :                                         ModuleVisibility &to_resolve)
     108              : {
     109        20694 :   switch (visibility.get_vis_type ())
     110              :     {
     111        14369 :     case HIR::Visibility::PRIVATE:
     112        14369 :       to_resolve = ModuleVisibility::create_restricted (current_module);
     113        14369 :       return true;
     114         6309 :     case HIR::Visibility::PUBLIC:
     115         6309 :       to_resolve = ModuleVisibility::create_public ();
     116         6309 :       return true;
     117           16 :     case HIR::Visibility::RESTRICTED:
     118           16 :       {
     119              :         // FIXME: We also need to handle 2015 vs 2018 edition conflicts
     120           16 :         auto id = UNKNOWN_DEFID;
     121           16 :         auto result = resolve_module_path (visibility.get_path (), id);
     122           16 :         to_resolve = ModuleVisibility::create_restricted (id);
     123           16 :         return result;
     124              :       }
     125            0 :     default:
     126            0 :       rust_unreachable ();
     127              :       return false;
     128              :     }
     129              : }
     130              : 
     131              : void
     132        16680 : VisibilityResolver::resolve_and_update (const HIR::VisItem *item)
     133              : {
     134        16680 :   ModuleVisibility module_vis;
     135        16680 :   if (!resolve_visibility (item->get_visibility (), module_vis))
     136            0 :     return; // we will already have emitted errors
     137              : 
     138        16680 :   mappings.insert_visibility (item->get_mappings ().get_nodeid (), module_vis);
     139              : }
     140              : 
     141              : void
     142         1189 : VisibilityResolver::visit (HIR::Module &mod)
     143              : {
     144         1189 :   auto old_module = current_module;
     145         1189 :   current_module = mod.get_mappings ().get_defid ();
     146              : 
     147         5099 :   for (auto &item : mod.get_items ())
     148              :     {
     149         3910 :       if (item->get_hir_kind () == HIR::Node::VIS_ITEM)
     150              :         {
     151         3910 :           auto vis_item = static_cast<HIR::VisItem *> (item.get ());
     152         3910 :           vis_item->accept_vis (*this);
     153              :         }
     154              :     }
     155              : 
     156         1189 :   current_module = old_module;
     157         1189 : }
     158              : 
     159              : void
     160            0 : VisibilityResolver::visit (HIR::ExternCrate &)
     161            0 : {}
     162              : 
     163              : void
     164            0 : VisibilityResolver::visit (HIR::UseDeclaration &)
     165            0 : {}
     166              : 
     167              : void
     168        12841 : VisibilityResolver::visit (HIR::Function &func)
     169              : {
     170        12841 :   resolve_and_update (&func);
     171        12841 : }
     172              : 
     173              : void
     174         1212 : VisibilityResolver::visit (HIR::TypeAlias &type_alias)
     175              : {
     176         1212 :   resolve_and_update (&type_alias);
     177         1212 : }
     178              : 
     179              : void
     180         1322 : VisibilityResolver::visit (HIR::StructStruct &struct_item)
     181              : {
     182         1322 :   resolve_and_update (&struct_item);
     183         1322 : }
     184              : 
     185              : void
     186          794 : VisibilityResolver::visit (HIR::TupleStruct &tuple_struct)
     187              : {
     188          794 :   resolve_and_update (&tuple_struct);
     189          794 : }
     190              : 
     191              : void
     192          478 : VisibilityResolver::visit (HIR::Enum &enum_item)
     193              : {
     194          478 :   ModuleVisibility vis;
     195          478 :   if (!resolve_visibility (enum_item.get_visibility (), vis))
     196            0 :     return;
     197              : 
     198          478 :   mappings.insert_visibility (enum_item.get_mappings ().get_nodeid (), vis);
     199         1614 :   for (auto &variant : enum_item.get_variants ())
     200         1136 :     mappings.insert_visibility (variant->get_mappings ().get_nodeid (), vis);
     201              : }
     202              : 
     203              : void
     204           97 : VisibilityResolver::visit (HIR::Union &)
     205           97 : {}
     206              : 
     207              : void
     208          460 : VisibilityResolver::visit (HIR::ConstantItem &const_item)
     209              : {
     210          460 :   resolve_and_update (&const_item);
     211          460 : }
     212              : 
     213              : void
     214           51 : VisibilityResolver::visit (HIR::StaticItem &static_item)
     215              : {
     216           51 :   resolve_and_update (&static_item);
     217           51 : }
     218              : 
     219              : void
     220         3536 : VisibilityResolver::visit (HIR::Trait &trait)
     221              : {
     222         3536 :   ModuleVisibility vis;
     223         3536 :   if (!resolve_visibility (trait.get_visibility (), vis))
     224            0 :     return;
     225              : 
     226         3536 :   mappings.insert_visibility (trait.get_mappings ().get_nodeid (), vis);
     227         6747 :   for (auto &item : trait.get_trait_items ())
     228         3211 :     mappings.insert_visibility (item->get_mappings ().get_nodeid (), vis);
     229              : }
     230              : 
     231              : void
     232         5538 : VisibilityResolver::visit (HIR::ImplBlock &impl)
     233              : {
     234        13568 :   for (auto &item : impl.get_impl_items ())
     235              :     {
     236         8030 :       HIR::VisItem *vis_item;
     237         8030 :       switch (item->get_impl_item_type ())
     238              :         {
     239         6793 :         case HIR::ImplItem::FUNCTION:
     240         6793 :           vis_item = static_cast<HIR::Function *> (item.get ());
     241              :           break;
     242         1170 :         case HIR::ImplItem::TYPE_ALIAS:
     243         1170 :           vis_item = static_cast<HIR::TypeAlias *> (item.get ());
     244              :           break;
     245           67 :         case HIR::ImplItem::CONSTANT:
     246           67 :           vis_item = static_cast<HIR::ConstantItem *> (item.get ());
     247              :           break;
     248            0 :         default:
     249            0 :           rust_unreachable ();
     250         8030 :           return;
     251              :         }
     252         8030 :       vis_item->accept_vis (*this);
     253              :     }
     254         5538 : }
     255              : 
     256              : void
     257         1442 : VisibilityResolver::visit (HIR::ExternBlock &)
     258         1442 : {}
     259              : 
     260              : } // namespace Privacy
     261              : } // 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.