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1 : : // Copyright (C) 2020-2025 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 : 1668873 : Codepoint () : value (0) {}
36 : :
37 : : // Creates a codepoint from an encoded UTF-8 value.
38 : 7293234 : Codepoint (uint32_t value) : value (value) {}
39 : :
40 : 174113 : static Codepoint eof () { return Codepoint (UINT32_MAX); }
41 : 3830363 : 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 : 554639 : bool operator== (Codepoint other) const { return value == other.value; }
49 : 3030286 : bool operator!= (Codepoint other) const { return !operator== (other); }
50 : : };
51 : : } // namespace Rust
52 : :
53 : : #endif
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