| 1 | /* Procedural lookup of box drawing characters. |
|---|
| 2 | Copyright (C) 2023-2024 Free Software Foundation, Inc. |
|---|
| 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" |
|---|
| 22 | #define INCLUDE_VECTOR |
|---|
| 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 */ |
|---|
| 74 | |
|---|
