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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_TYTY_UTIL_H
      20              : #define RUST_TYTY_UTIL_H
      21              : 
      22              : #include "rust-hir-map.h"
      23              : 
      24              : namespace Rust {
      25              : namespace TyTy {
      26              : 
      27              : class BaseType;
      28              : class ConstType;
      29              : 
      30              : // this is a placeholder for types that can change like inference variables
      31              : class TyVar
      32              : {
      33              : public:
      34              :   explicit TyVar (HirId ref);
      35              : 
      36           31 :   HirId get_ref () const { return ref; }
      37              : 
      38              :   BaseType *get_tyty () const;
      39              : 
      40              :   TyVar clone () const;
      41              : 
      42              :   TyVar monomorphized_clone () const;
      43              : 
      44              :   static TyVar get_implicit_infer_var (location_t locus);
      45              : 
      46              :   static TyVar get_implicit_const_infer_var (location_t locus,
      47              :                                              TyVar *implicit_type = nullptr);
      48              : 
      49              :   static TyVar subst_covariant_var (TyTy::BaseType *orig,
      50              :                                     TyTy::BaseType *subst);
      51              : 
      52              : private:
      53              :   HirId ref;
      54              : };
      55              : 
      56              : class TyWithLocation
      57              : {
      58              : public:
      59              :   explicit TyWithLocation (BaseType *ty, location_t locus);
      60              :   explicit TyWithLocation (BaseType *ty);
      61              : 
      62      6539345 :   BaseType *get_ty () const { return ty; }
      63       128447 :   location_t get_locus () const { return locus; }
      64              : 
      65              : private:
      66              :   BaseType *ty;
      67              :   location_t locus;
      68              : };
      69              : 
      70              : } // namespace TyTy
      71              : } // namespace Rust
      72              : 
      73              : #endif // RUST_TYTY_UTIL_H