Line data    Source code

       1              : // Copyright (C) 2025-2026 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_GGC_H
      20              : #define RUST_GGC_H
      21              : 
      22              : #include "rust-system.h"
      23              : #include "tree.h"
      24              : 
      25              : namespace Rust {
      26              : 
      27              : // forward declare
      28              : class Identifier;
      29              : 
      30              : namespace GGC {
      31              : 
      32              : class Ident
      33              : {
      34              :   tree inner;
      35              : 
      36              : public:
      37              :   Ident (const char *str);
      38              :   Ident (const std::string &str);
      39              :   Ident (const Rust::Identifier &ident);
      40              : 
      41              :   bool operator== (const Ident &other) const { return inner == other.inner; }
      42              :   bool operator== (const std::string &other) const;
      43              : 
      44              :   const char *c_str () const { return IDENTIFIER_POINTER (inner); }
      45              :   size_t size () const { return IDENTIFIER_LENGTH (inner); }
      46              : 
      47              :   bool empty () const { return !size (); }
      48              : 
      49              :   std::string as_string () const
      50              :   {
      51              :     return std::string (c_str (), c_str () + size ());
      52              :   }
      53              : 
      54       327022 :   tree as_tree () const { return inner; }
      55              : };
      56              : 
      57              : static inline bool
      58              : operator== (const std::string &a, const Ident &b)
      59              : {
      60              :   return b == a;
      61              : }
      62              : 
      63              : class ChainList
      64              : {
      65              :   tree head;
      66              :   tree *tail_cdr;
      67              : 
      68              : public:
      69           58 :   ChainList () : head (NULL_TREE), tail_cdr (&head) {}
      70              : 
      71              :   ChainList (ChainList &&oth)
      72              :   {
      73              :     head = oth.head;
      74              :     if (oth.tail_cdr == &oth.head)
      75              :       tail_cdr = &oth.head;
      76              :     else
      77              :       tail_cdr = oth.tail_cdr;
      78              :     oth.head = NULL_TREE;
      79              :     oth.tail_cdr = &oth.head;
      80              :   }
      81              : 
      82              :   ChainList &operator= (ChainList &&oth)
      83              :   {
      84              :     this->~ChainList ();
      85              :     new (this) ChainList (std::move (oth));
      86              :     return *this;
      87              :   }
      88              : 
      89           58 :   tree get_head () const { return head; }
      90              : 
      91              :   // TREE_CHAIN (ent) will be modified
      92              :   // making ent a node in this list
      93              :   // do not push a single tree to multiple ChainList objects
      94           35 :   void push_back (tree ent)
      95              :   {
      96           35 :     *tail_cdr = ent;
      97           35 :     tail_cdr = &TREE_CHAIN (ent);
      98           35 :   }
      99              : };
     100              : 
     101              : } // namespace GGC
     102              : 
     103              : } // namespace Rust
     104              : 
     105              : #endif // RUST_GGC_H