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       1                 :             : // Copyright (C) 2020-2024 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                 :     1663534 :   Codepoint () : value (0) {}
      36                 :             : 
      37                 :             :   // Creates a codepoint from an encoded UTF-8 value.
      38                 :     7241397 :   Codepoint (uint32_t value) : value (value) {}
      39                 :             : 
      40                 :      169001 :   static Codepoint eof () { return Codepoint (UINT32_MAX); }
      41                 :     3801015 :   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                 :      552986 :   bool operator== (Codepoint other) const { return value == other.value; }
      49                 :     3006881 :   bool operator!= (Codepoint other) const { return !operator== (other); }
      50                 :             : };
      51                 :             : } // namespace Rust
      52                 :             : 
      53                 :             : #endif