1  // Copyright (C) 2021-2023 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_TRAIT_RESOLVE_H
      20  #define RUST_HIR_TRAIT_RESOLVE_H
      21  
      22  #include "rust-hir-type-check-type.h"
      23  
      24  namespace Rust {
      25  namespace Resolver {
      26  
      27  class ResolveTraitItemToRef : public TypeCheckBase,
      28  			      private HIR::HIRTraitItemVisitor
      29  {
      30  public:
      31    static TraitItemReference
      32    Resolve (HIR::TraitItem &item, TyTy::BaseType *self,
      33  	   std::vector<TyTy::SubstitutionParamMapping> substitutions);
      34  
      35    void visit (HIR::TraitItemType &type) override;
      36  
      37    void visit (HIR::TraitItemConst &cst) override;
      38  
      39    void visit (HIR::TraitItemFunc &fn) override;
      40  
      41  private:
      42    ResolveTraitItemToRef (
      43      TyTy::BaseType *self,
      44      std::vector<TyTy::SubstitutionParamMapping> &&substitutions);
      45  
      46    TraitItemReference resolved;
      47    TyTy::BaseType *self;
      48    std::vector<TyTy::SubstitutionParamMapping> substitutions;
      49  };
      50  
      51  class TraitResolver : public TypeCheckBase
      52  {
      53  public:
      54    static TraitReference *Resolve (HIR::TypePath &path);
      55  
      56    static TraitReference *Resolve (HIR::Trait &trait);
      57  
      58    static TraitReference *Lookup (HIR::TypePath &path);
      59  
      60  private:
      61    TraitResolver ();
      62  
      63    TraitReference *resolve_path (HIR::TypePath &path);
      64  
      65    TraitReference *resolve_trait (HIR::Trait *trait_reference);
      66  
      67    TraitReference *lookup_path (HIR::TypePath &path);
      68  
      69    bool resolve_path_to_trait (const HIR::TypePath &path,
      70  			      HIR::Trait **resolved) const;
      71  };
      72  
      73  } // namespace Resolver
      74  } // namespace Rust
      75  
      76  #endif // RUST_HIR_TRAIT_RESOLVE_H