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4f01ae37 | 1 | /* Procedural lookup of box drawing characters. |
a945c346 | 2 | Copyright (C) 2023-2024 Free Software Foundation, Inc. |
4f01ae37 DM |
3 | Contributed by David Malcolm <dmalcolm@redhat.com>. |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #include "config.h" | |
b2e075a5 | 22 | #define INCLUDE_VECTOR |
4f01ae37 DM |
23 | #include "system.h" |
24 | #include "coretypes.h" | |
25 | #include "text-art/box-drawing.h" | |
26 | #include "selftest.h" | |
27 | #include "text-art/selftests.h" | |
28 | ||
29 | ||
30 | /* According to | |
31 | https://en.wikipedia.org/wiki/Box-drawing_character#Character_code | |
32 | "DOS line- and box-drawing characters are not ordered in any programmatic | |
33 | manner, so calculating a particular character shape needs to use a look-up | |
34 | table. " | |
35 | Hence this array. */ | |
36 | static const cppchar_t box_drawing_chars[] = { | |
37 | #include "text-art/box-drawing-chars.inc" | |
38 | }; | |
39 | ||
40 | cppchar_t | |
41 | text_art::get_box_drawing_char (directions line_dirs) | |
42 | { | |
43 | const size_t idx = line_dirs.as_index (); | |
44 | gcc_assert (idx < 16); | |
45 | return box_drawing_chars[idx]; | |
46 | } | |
47 | ||
48 | #if CHECKING_P | |
49 | ||
50 | namespace selftest { | |
51 | ||
52 | /* Run all selftests in this file. */ | |
53 | ||
54 | void | |
55 | text_art_box_drawing_cc_tests () | |
56 | { | |
57 | ASSERT_EQ (text_art::get_box_drawing_char | |
58 | (text_art::directions (false, false, false, false)), | |
59 | ' '); | |
60 | ASSERT_EQ (text_art::get_box_drawing_char | |
61 | (text_art::directions (false, false, true, true)), | |
62 | 0x2500); /* BOX DRAWINGS LIGHT HORIZONTAL */ | |
63 | ASSERT_EQ (text_art::get_box_drawing_char | |
64 | (text_art::directions (true, true, false, false)), | |
65 | 0x2502); /* BOX DRAWINGS LIGHT VERTICAL */ | |
66 | ASSERT_EQ (text_art::get_box_drawing_char | |
67 | (text_art::directions (true, false, true, false)), | |
68 | 0x2518); /* BOX DRAWINGS LIGHT UP AND LEFT */ | |
69 | } | |
70 | ||
71 | } // namespace selftest | |
72 | ||
73 | #endif /* #if CHECKING_P */ |