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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_CODEPOINT_H
      20              : #define RUST_CODEPOINT_H
      21              : 
      22              : #include "rust-system.h"
      23              : 
      24              : namespace Rust {
      25              : 
      26              : constexpr uint32_t MAX_ASCII_CODEPOINT = 0x7F;
      27              : constexpr uint32_t CODEPOINT_INVALID = 0xFFFE;
      28              : 
      29              : // FIXME: move this to rust-unicode.h?
      30              : struct Codepoint
      31              : {
      32              :   uint32_t value;
      33              : 
      34              :   // Creates a zero codepoint.
      35      3506065 :   Codepoint () : value (0) {}
      36              : 
      37              :   // Creates a codepoint from an encoded UTF-8 value.
      38     15894232 :   Codepoint (uint32_t value) : value (value) {}
      39              : 
      40       325416 :   static Codepoint eof () { return Codepoint (UINT32_MAX); }
      41      8116904 :   bool is_eof () const { return value == UINT32_MAX; }
      42          471 :   bool is_ascii () const { return value <= MAX_ASCII_CODEPOINT; }
      43              :   bool is_supplementary_character () const { return value > 0xFFFF; }
      44              : 
      45              :   // Returns a C++ string containing string value of codepoint.
      46              :   std::string as_string ();
      47              : 
      48      1221812 :   bool operator== (Codepoint other) const { return value == other.value; }
      49      6577373 :   bool operator!= (Codepoint other) const { return !operator== (other); }
      50              : };
      51              : } // namespace Rust
      52              : 
      53              : #endif