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       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              : #ifndef RUST_HIR_TYPE_CHECK_ITEM
      20              : #define RUST_HIR_TYPE_CHECK_ITEM
      21              : 
      22              : #include "rust-hir-type-check-base.h"
      23              : #include "rust-hir-visitor.h"
      24              : 
      25              : namespace Rust {
      26              : namespace Resolver {
      27              : 
      28        24372 : class TypeCheckItem : private TypeCheckBase, private HIR::HIRVisItemVisitor
      29              : {
      30              : public:
      31              :   static TyTy::BaseType *Resolve (HIR::Item &item);
      32              : 
      33              :   static TyTy::FnType *ResolveFunctionSignature (HIR::Function &function);
      34              : 
      35              :   static TyTy::BaseType *ResolveTraitSignature (HIR::Trait &trait);
      36              : 
      37              :   static TyTy::BaseType *ResolveImplItem (HIR::ImplBlock &impl_block,
      38              :                                           HIR::ImplItem &item);
      39              : 
      40              :   static TyTy::BaseType *ResolveImplBlockSelf (HIR::ImplBlock &impl_block);
      41              : 
      42              :   static TyTy::BaseType *ResolveImplBlockSelfWithInference (
      43              :     HIR::ImplBlock &impl, location_t locus,
      44              :     TyTy::SubstitutionArgumentMappings *infer_arguments);
      45              : 
      46              :   static std::vector<TyTy::SubstitutionParamMapping>
      47              :   ResolveImplBlockSubstitutions (HIR::ImplBlock &impl_block,
      48              :                                  bool &failure_flag);
      49              : 
      50              :   static void ResolveImplTraitAssociatedTypes (
      51              :     TypeCheckContext *context, HIR::ImplBlock &impl_block,
      52              :     TyTy::TypeBoundPredicate &specified_bound, TyTy::BaseType *self,
      53              :     std::vector<TyTy::SubstitutionParamMapping> &substitutions,
      54              :     std::map<DefId, AssocTypeEntry> &assoc_types_by_trait_item,
      55              :     std::vector<const TraitItemReference *> &trait_item_refs);
      56              : 
      57              :   void visit (HIR::Module &module) override;
      58              :   void visit (HIR::Function &function) override;
      59              :   void visit (HIR::TypeAlias &alias) override;
      60              :   void visit (HIR::TupleStruct &struct_decl) override;
      61              :   void visit (HIR::StructStruct &struct_decl) override;
      62              :   void visit (HIR::Enum &enum_decl) override;
      63              :   void visit (HIR::Union &union_decl) override;
      64              :   void visit (HIR::StaticItem &var) override;
      65              :   void visit (HIR::ConstantItem &constant) override;
      66              :   void visit (HIR::ImplBlock &impl_block) override;
      67              :   void visit (HIR::ExternBlock &extern_block) override;
      68              :   void visit (HIR::Trait &trait_block) override;
      69              :   void visit (HIR::ExternCrate &extern_crate) override;
      70              : 
      71              :   // nothing to do
      72            0 :   void visit (HIR::UseDeclaration &) override {}
      73              : 
      74              : protected:
      75              :   void resolve_impl_block (HIR::ImplBlock &impl_block);
      76              :   void resolve_trait_impl_block (HIR::ImplBlock &impl_block);
      77              : 
      78              :   std::pair<std::vector<TyTy::SubstitutionParamMapping>,
      79              :             TyTy::RegionConstraints>
      80              :   resolve_impl_block_substitutions (HIR::ImplBlock &impl_block,
      81              :                                     bool &failure_flag);
      82              : 
      83              :   void validate_trait_impl_block (
      84              :     const TyTy::TypeBoundPredicate &specified_bound,
      85              :     std::vector<const TraitItemReference *> trait_item_refs,
      86              :     TraitReference *trait_reference, HIR::ImplBlock &impl_block,
      87              :     TyTy::BaseType *self,
      88              :     std::vector<TyTy::SubstitutionParamMapping> &substitutions);
      89              : 
      90              :   TyTy::BaseType *resolve_impl_item (HIR::ImplBlock &impl_block,
      91              :                                      HIR::ImplItem &item);
      92              : 
      93              :   TyTy::BaseType *resolve_impl_block_self (HIR::ImplBlock &impl_block);
      94              : 
      95              :   TyTy::FnType *resolve_function_signature (HIR::Function &function);
      96              : 
      97              :   TyTy::BaseType *resolve_trait (HIR::Trait &trait, bool resolve_bodies);
      98              : 
      99              :   bool validate_repr_simd (const std::vector<TyTy::StructFieldType *> &fields,
     100              :                            location_t locus);
     101              : 
     102              : private:
     103              :   TypeCheckItem ();
     104              : 
     105              :   TyTy::BaseType *infered;
     106              : };
     107              : 
     108              : } // namespace Resolver
     109              : } // namespace Rust
     110              : 
     111              : #endif // RUST_HIR_TYPE_CHECK_ITEM