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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_NODE_H
      20              : #define RUST_HIR_NODE_H
      21              : 
      22              : namespace Rust {
      23              : 
      24              : namespace HIR {
      25              : 
      26       374022 : class Node
      27              : {
      28              : public:
      29              :   // Kind for downcasting various HIR nodes to other base classes when visiting
      30              :   // them
      31              :   enum BaseKind
      32              :   {
      33              :     /* class ExternalItem */
      34              :     EXTERNAL,
      35              :     /* class TraitItem */
      36              :     TRAIT_ITEM,
      37              :     /* class VisItem */
      38              :     VIS_ITEM,
      39              :     /* class Item */
      40              :     ITEM,
      41              :     /* class ImplItem */
      42              :     IMPL,
      43              :     /* class Type */
      44              :     TYPE,
      45              :     /* class Stmt */
      46              :     STMT,
      47              :     /* class Expr */
      48              :     EXPR,
      49              :     /* class Pattern */
      50              :     PATTERN,
      51              :   };
      52              : 
      53              :   /**
      54              :    * Get the kind of HIR node we are dealing with. This is useful for
      55              :    * downcasting to more precise types when necessary, i.e going from an `Item*`
      56              :    * to a `VisItem*`
      57              :    */
      58              :   virtual BaseKind get_hir_kind () = 0;
      59              : };
      60              : 
      61              : } // namespace HIR
      62              : } // namespace Rust
      63              : #endif