1  // Copyright (C) 2020-2023 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_CASTS
      20  #define RUST_CASTS
      21  
      22  #include "rust-tyty.h"
      23  #include "rust-coercion.h"
      24  
      25  namespace Rust {
      26  namespace Resolver {
      27  
      28  class TypeCastRules
      29  {
      30  public:
      31    static TypeCoercionRules::CoercionResult
      32    resolve (Location locus, TyTy::TyWithLocation from, TyTy::TyWithLocation to);
      33  
      34  protected:
      35    TypeCoercionRules::CoercionResult check ();
      36    TypeCoercionRules::CoercionResult cast_rules ();
      37    TypeCoercionRules::CoercionResult check_ptr_ptr_cast ();
      38  
      39    void emit_cast_error () const;
      40  
      41  protected:
      42    TypeCastRules (Location locus, TyTy::TyWithLocation from,
      43  		 TyTy::TyWithLocation to);
      44  
      45    Location locus;
      46    TyTy::TyWithLocation from;
      47    TyTy::TyWithLocation to;
      48  };
      49  
      50  } // namespace Resolver
      51  } // namespace Rust
      52  
      53  #endif // RUST_CASTS