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llvm-project/llvm/lib/Support/Unicode.cpp
Corentin Jabot 64ab2b1dcc Improve handling of static assert messages. 
Instead of dumping the string literal (which
quotes it and escape every non-ascii symbol),
we can use the content of the string when it is a
8 byte string.

Wide, UTF-8/UTF-16/32 strings are still completely
escaped, until we clarify how these entities should
behave (cf https://wg21.link/p2361).

`FormatDiagnostic` is modified to escape
non printable characters and invalid UTF-8.

This ensures that unicode characters, spaces and new
lines are properly rendered in static messages.
This make clang more consistent with other implementation
and fixes this tweet
https://twitter.com/jfbastien/status/1298307325443231744 :)

Of note, `PaddingChecker` did print out new lines that were
later removed by the diagnostic printing code.
To be consistent with its tests, the new lines are removed
from the diagnostic.

Unicode tables updated to both use the Unicode definitions
and the Unicode 14.0 data.

U+00AD SOFT HYPHEN is still considered a print character
to match existing practices in terminals, in addition of
being considered a formatting character as per Unicode.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D108469
2022-06-29 14:57:35 +02:00

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//===- llvm/Support/Unicode.cpp - Unicode character properties -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements functions that allow querying certain properties of
// Unicode characters.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Unicode.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/UnicodeCharRanges.h"
namespace llvm {
namespace sys {
namespace unicode {
/// Unicode code points of the categories L, M, N, P, S and Zs are considered
/// printable.
/// In addition, U+00AD SOFT HYPHEN is also considered printable, as
/// it's actually displayed on most terminals. \return true if the character is
/// considered printable.
bool isPrintable(int UCS) {
// https://unicode.org/Public/14.0.0/ucdxml/
static const UnicodeCharRange PrintableRanges[] = {
{0x0020, 0x007E}, {0x00A0, 0x00AC}, {0x00AE, 0x0377},
{0x037A, 0x037F}, {0x0384, 0x038A}, {0x038C, 0x038C},
{0x038E, 0x03A1}, {0x03A3, 0x052F}, {0x0531, 0x0556},
{0x0559, 0x058A}, {0x058D, 0x058F}, {0x0591, 0x05C7},
{0x05D0, 0x05EA}, {0x05EF, 0x05F4}, {0x0606, 0x061B},
{0x061D, 0x06DC}, {0x06DE, 0x070D}, {0x0710, 0x074A},
{0x074D, 0x07B1}, {0x07C0, 0x07FA}, {0x07FD, 0x082D},
{0x0830, 0x083E}, {0x0840, 0x085B}, {0x085E, 0x085E},
{0x0860, 0x086A}, {0x0870, 0x088E}, {0x0898, 0x08E1},
{0x08E3, 0x0983}, {0x0985, 0x098C}, {0x098F, 0x0990},
{0x0993, 0x09A8}, {0x09AA, 0x09B0}, {0x09B2, 0x09B2},
{0x09B6, 0x09B9}, {0x09BC, 0x09C4}, {0x09C7, 0x09C8},
{0x09CB, 0x09CE}, {0x09D7, 0x09D7}, {0x09DC, 0x09DD},
{0x09DF, 0x09E3}, {0x09E6, 0x09FE}, {0x0A01, 0x0A03},
{0x0A05, 0x0A0A}, {0x0A0F, 0x0A10}, {0x0A13, 0x0A28},
{0x0A2A, 0x0A30}, {0x0A32, 0x0A33}, {0x0A35, 0x0A36},
{0x0A38, 0x0A39}, {0x0A3C, 0x0A3C}, {0x0A3E, 0x0A42},
{0x0A47, 0x0A48}, {0x0A4B, 0x0A4D}, {0x0A51, 0x0A51},
{0x0A59, 0x0A5C}, {0x0A5E, 0x0A5E}, {0x0A66, 0x0A76},
{0x0A81, 0x0A83}, {0x0A85, 0x0A8D}, {0x0A8F, 0x0A91},
{0x0A93, 0x0AA8}, {0x0AAA, 0x0AB0}, {0x0AB2, 0x0AB3},
{0x0AB5, 0x0AB9}, {0x0ABC, 0x0AC5}, {0x0AC7, 0x0AC9},
{0x0ACB, 0x0ACD}, {0x0AD0, 0x0AD0}, {0x0AE0, 0x0AE3},
{0x0AE6, 0x0AF1}, {0x0AF9, 0x0AFF}, {0x0B01, 0x0B03},
{0x0B05, 0x0B0C}, {0x0B0F, 0x0B10}, {0x0B13, 0x0B28},
{0x0B2A, 0x0B30}, {0x0B32, 0x0B33}, {0x0B35, 0x0B39},
{0x0B3C, 0x0B44}, {0x0B47, 0x0B48}, {0x0B4B, 0x0B4D},
{0x0B55, 0x0B57}, {0x0B5C, 0x0B5D}, {0x0B5F, 0x0B63},
{0x0B66, 0x0B77}, {0x0B82, 0x0B83}, {0x0B85, 0x0B8A},
{0x0B8E, 0x0B90}, {0x0B92, 0x0B95}, {0x0B99, 0x0B9A},
{0x0B9C, 0x0B9C}, {0x0B9E, 0x0B9F}, {0x0BA3, 0x0BA4},
{0x0BA8, 0x0BAA}, {0x0BAE, 0x0BB9}, {0x0BBE, 0x0BC2},
{0x0BC6, 0x0BC8}, {0x0BCA, 0x0BCD}, {0x0BD0, 0x0BD0},
{0x0BD7, 0x0BD7}, {0x0BE6, 0x0BFA}, {0x0C00, 0x0C0C},
{0x0C0E, 0x0C10}, {0x0C12, 0x0C28}, {0x0C2A, 0x0C39},
{0x0C3C, 0x0C44}, {0x0C46, 0x0C48}, {0x0C4A, 0x0C4D},
{0x0C55, 0x0C56}, {0x0C58, 0x0C5A}, {0x0C5D, 0x0C5D},
{0x0C60, 0x0C63}, {0x0C66, 0x0C6F}, {0x0C77, 0x0C8C},
{0x0C8E, 0x0C90}, {0x0C92, 0x0CA8}, {0x0CAA, 0x0CB3},
{0x0CB5, 0x0CB9}, {0x0CBC, 0x0CC4}, {0x0CC6, 0x0CC8},
{0x0CCA, 0x0CCD}, {0x0CD5, 0x0CD6}, {0x0CDD, 0x0CDE},
{0x0CE0, 0x0CE3}, {0x0CE6, 0x0CEF}, {0x0CF1, 0x0CF2},
{0x0D00, 0x0D0C}, {0x0D0E, 0x0D10}, {0x0D12, 0x0D44},
{0x0D46, 0x0D48}, {0x0D4A, 0x0D4F}, {0x0D54, 0x0D63},
{0x0D66, 0x0D7F}, {0x0D81, 0x0D83}, {0x0D85, 0x0D96},
{0x0D9A, 0x0DB1}, {0x0DB3, 0x0DBB}, {0x0DBD, 0x0DBD},
{0x0DC0, 0x0DC6}, {0x0DCA, 0x0DCA}, {0x0DCF, 0x0DD4},
{0x0DD6, 0x0DD6}, {0x0DD8, 0x0DDF}, {0x0DE6, 0x0DEF},
{0x0DF2, 0x0DF4}, {0x0E01, 0x0E3A}, {0x0E3F, 0x0E5B},
{0x0E81, 0x0E82}, {0x0E84, 0x0E84}, {0x0E86, 0x0E8A},
{0x0E8C, 0x0EA3}, {0x0EA5, 0x0EA5}, {0x0EA7, 0x0EBD},
{0x0EC0, 0x0EC4}, {0x0EC6, 0x0EC6}, {0x0EC8, 0x0ECD},
{0x0ED0, 0x0ED9}, {0x0EDC, 0x0EDF}, {0x0F00, 0x0F47},
{0x0F49, 0x0F6C}, {0x0F71, 0x0F97}, {0x0F99, 0x0FBC},
{0x0FBE, 0x0FCC}, {0x0FCE, 0x0FDA}, {0x1000, 0x10C5},
{0x10C7, 0x10C7}, {0x10CD, 0x10CD}, {0x10D0, 0x1248},
{0x124A, 0x124D}, {0x1250, 0x1256}, {0x1258, 0x1258},
{0x125A, 0x125D}, {0x1260, 0x1288}, {0x128A, 0x128D},
{0x1290, 0x12B0}, {0x12B2, 0x12B5}, {0x12B8, 0x12BE},
{0x12C0, 0x12C0}, {0x12C2, 0x12C5}, {0x12C8, 0x12D6},
{0x12D8, 0x1310}, {0x1312, 0x1315}, {0x1318, 0x135A},
{0x135D, 0x137C}, {0x1380, 0x1399}, {0x13A0, 0x13F5},
{0x13F8, 0x13FD}, {0x1400, 0x169C}, {0x16A0, 0x16F8},
{0x1700, 0x1715}, {0x171F, 0x1736}, {0x1740, 0x1753},
{0x1760, 0x176C}, {0x176E, 0x1770}, {0x1772, 0x1773},
{0x1780, 0x17DD}, {0x17E0, 0x17E9}, {0x17F0, 0x17F9},
{0x1800, 0x180D}, {0x180F, 0x1819}, {0x1820, 0x1878},
{0x1880, 0x18AA}, {0x18B0, 0x18F5}, {0x1900, 0x191E},
{0x1920, 0x192B}, {0x1930, 0x193B}, {0x1940, 0x1940},
{0x1944, 0x196D}, {0x1970, 0x1974}, {0x1980, 0x19AB},
{0x19B0, 0x19C9}, {0x19D0, 0x19DA}, {0x19DE, 0x1A1B},
{0x1A1E, 0x1A5E}, {0x1A60, 0x1A7C}, {0x1A7F, 0x1A89},
{0x1A90, 0x1A99}, {0x1AA0, 0x1AAD}, {0x1AB0, 0x1ACE},
{0x1B00, 0x1B4C}, {0x1B50, 0x1B7E}, {0x1B80, 0x1BF3},
{0x1BFC, 0x1C37}, {0x1C3B, 0x1C49}, {0x1C4D, 0x1C88},
{0x1C90, 0x1CBA}, {0x1CBD, 0x1CC7}, {0x1CD0, 0x1CFA},
{0x1D00, 0x1F15}, {0x1F18, 0x1F1D}, {0x1F20, 0x1F45},
{0x1F48, 0x1F4D}, {0x1F50, 0x1F57}, {0x1F59, 0x1F59},
{0x1F5B, 0x1F5B}, {0x1F5D, 0x1F5D}, {0x1F5F, 0x1F7D},
{0x1F80, 0x1FB4}, {0x1FB6, 0x1FC4}, {0x1FC6, 0x1FD3},
{0x1FD6, 0x1FDB}, {0x1FDD, 0x1FEF}, {0x1FF2, 0x1FF4},
{0x1FF6, 0x1FFE}, {0x2000, 0x200A}, {0x2010, 0x2027},
{0x202F, 0x205F}, {0x2070, 0x2071}, {0x2074, 0x208E},
{0x2090, 0x209C}, {0x20A0, 0x20C0}, {0x20D0, 0x20F0},
{0x2100, 0x218B}, {0x2190, 0x2426}, {0x2440, 0x244A},
{0x2460, 0x2B73}, {0x2B76, 0x2B95}, {0x2B97, 0x2CF3},
{0x2CF9, 0x2D25}, {0x2D27, 0x2D27}, {0x2D2D, 0x2D2D},
{0x2D30, 0x2D67}, {0x2D6F, 0x2D70}, {0x2D7F, 0x2D96},
{0x2DA0, 0x2DA6}, {0x2DA8, 0x2DAE}, {0x2DB0, 0x2DB6},
{0x2DB8, 0x2DBE}, {0x2DC0, 0x2DC6}, {0x2DC8, 0x2DCE},
{0x2DD0, 0x2DD6}, {0x2DD8, 0x2DDE}, {0x2DE0, 0x2E5D},
{0x2E80, 0x2E99}, {0x2E9B, 0x2EF3}, {0x2F00, 0x2FD5},
{0x2FF0, 0x2FFB}, {0x3000, 0x303F}, {0x3041, 0x3096},
{0x3099, 0x30FF}, {0x3105, 0x312F}, {0x3131, 0x318E},
{0x3190, 0x31E3}, {0x31F0, 0x321E}, {0x3220, 0xA48C},
{0xA490, 0xA4C6}, {0xA4D0, 0xA62B}, {0xA640, 0xA6F7},
{0xA700, 0xA7CA}, {0xA7D0, 0xA7D1}, {0xA7D3, 0xA7D3},
{0xA7D5, 0xA7D9}, {0xA7F2, 0xA82C}, {0xA830, 0xA839},
{0xA840, 0xA877}, {0xA880, 0xA8C5}, {0xA8CE, 0xA8D9},
{0xA8E0, 0xA953}, {0xA95F, 0xA97C}, {0xA980, 0xA9CD},
{0xA9CF, 0xA9D9}, {0xA9DE, 0xA9FE}, {0xAA00, 0xAA36},
{0xAA40, 0xAA4D}, {0xAA50, 0xAA59}, {0xAA5C, 0xAAC2},
{0xAADB, 0xAAF6}, {0xAB01, 0xAB06}, {0xAB09, 0xAB0E},
{0xAB11, 0xAB16}, {0xAB20, 0xAB26}, {0xAB28, 0xAB2E},
{0xAB30, 0xAB6B}, {0xAB70, 0xABED}, {0xABF0, 0xABF9},
{0xAC00, 0xD7A3}, {0xD7B0, 0xD7C6}, {0xD7CB, 0xD7FB},
{0xF900, 0xFA6D}, {0xFA70, 0xFAD9}, {0xFB00, 0xFB06},
{0xFB13, 0xFB17}, {0xFB1D, 0xFB36}, {0xFB38, 0xFB3C},
{0xFB3E, 0xFB3E}, {0xFB40, 0xFB41}, {0xFB43, 0xFB44},
{0xFB46, 0xFBC2}, {0xFBD3, 0xFD8F}, {0xFD92, 0xFDC7},
{0xFDCF, 0xFDCF}, {0xFDF0, 0xFE19}, {0xFE20, 0xFE52},
{0xFE54, 0xFE66}, {0xFE68, 0xFE6B}, {0xFE70, 0xFE74},
{0xFE76, 0xFEFC}, {0xFF01, 0xFFBE}, {0xFFC2, 0xFFC7},
{0xFFCA, 0xFFCF}, {0xFFD2, 0xFFD7}, {0xFFDA, 0xFFDC},
{0xFFE0, 0xFFE6}, {0xFFE8, 0xFFEE}, {0xFFFC, 0xFFFD},
{0x10000, 0x1000B}, {0x1000D, 0x10026}, {0x10028, 0x1003A},
{0x1003C, 0x1003D}, {0x1003F, 0x1004D}, {0x10050, 0x1005D},
{0x10080, 0x100FA}, {0x10100, 0x10102}, {0x10107, 0x10133},
{0x10137, 0x1018E}, {0x10190, 0x1019C}, {0x101A0, 0x101A0},
{0x101D0, 0x101FD}, {0x10280, 0x1029C}, {0x102A0, 0x102D0},
{0x102E0, 0x102FB}, {0x10300, 0x10323}, {0x1032D, 0x1034A},
{0x10350, 0x1037A}, {0x10380, 0x1039D}, {0x1039F, 0x103C3},
{0x103C8, 0x103D5}, {0x10400, 0x1049D}, {0x104A0, 0x104A9},
{0x104B0, 0x104D3}, {0x104D8, 0x104FB}, {0x10500, 0x10527},
{0x10530, 0x10563}, {0x1056F, 0x1057A}, {0x1057C, 0x1058A},
{0x1058C, 0x10592}, {0x10594, 0x10595}, {0x10597, 0x105A1},
{0x105A3, 0x105B1}, {0x105B3, 0x105B9}, {0x105BB, 0x105BC},
{0x10600, 0x10736}, {0x10740, 0x10755}, {0x10760, 0x10767},
{0x10780, 0x10785}, {0x10787, 0x107B0}, {0x107B2, 0x107BA},
{0x10800, 0x10805}, {0x10808, 0x10808}, {0x1080A, 0x10835},
{0x10837, 0x10838}, {0x1083C, 0x1083C}, {0x1083F, 0x10855},
{0x10857, 0x1089E}, {0x108A7, 0x108AF}, {0x108E0, 0x108F2},
{0x108F4, 0x108F5}, {0x108FB, 0x1091B}, {0x1091F, 0x10939},
{0x1093F, 0x1093F}, {0x10980, 0x109B7}, {0x109BC, 0x109CF},
{0x109D2, 0x10A03}, {0x10A05, 0x10A06}, {0x10A0C, 0x10A13},
{0x10A15, 0x10A17}, {0x10A19, 0x10A35}, {0x10A38, 0x10A3A},
{0x10A3F, 0x10A48}, {0x10A50, 0x10A58}, {0x10A60, 0x10A9F},
{0x10AC0, 0x10AE6}, {0x10AEB, 0x10AF6}, {0x10B00, 0x10B35},
{0x10B39, 0x10B55}, {0x10B58, 0x10B72}, {0x10B78, 0x10B91},
{0x10B99, 0x10B9C}, {0x10BA9, 0x10BAF}, {0x10C00, 0x10C48},
{0x10C80, 0x10CB2}, {0x10CC0, 0x10CF2}, {0x10CFA, 0x10D27},
{0x10D30, 0x10D39}, {0x10E60, 0x10E7E}, {0x10E80, 0x10EA9},
{0x10EAB, 0x10EAD}, {0x10EB0, 0x10EB1}, {0x10F00, 0x10F27},
{0x10F30, 0x10F59}, {0x10F70, 0x10F89}, {0x10FB0, 0x10FCB},
{0x10FE0, 0x10FF6}, {0x11000, 0x1104D}, {0x11052, 0x11075},
{0x1107F, 0x110BC}, {0x110BE, 0x110C2}, {0x110D0, 0x110E8},
{0x110F0, 0x110F9}, {0x11100, 0x11134}, {0x11136, 0x11147},
{0x11150, 0x11176}, {0x11180, 0x111DF}, {0x111E1, 0x111F4},
{0x11200, 0x11211}, {0x11213, 0x1123E}, {0x11280, 0x11286},
{0x11288, 0x11288}, {0x1128A, 0x1128D}, {0x1128F, 0x1129D},
{0x1129F, 0x112A9}, {0x112B0, 0x112EA}, {0x112F0, 0x112F9},
{0x11300, 0x11303}, {0x11305, 0x1130C}, {0x1130F, 0x11310},
{0x11313, 0x11328}, {0x1132A, 0x11330}, {0x11332, 0x11333},
{0x11335, 0x11339}, {0x1133B, 0x11344}, {0x11347, 0x11348},
{0x1134B, 0x1134D}, {0x11350, 0x11350}, {0x11357, 0x11357},
{0x1135D, 0x11363}, {0x11366, 0x1136C}, {0x11370, 0x11374},
{0x11400, 0x1145B}, {0x1145D, 0x11461}, {0x11480, 0x114C7},
{0x114D0, 0x114D9}, {0x11580, 0x115B5}, {0x115B8, 0x115DD},
{0x11600, 0x11644}, {0x11650, 0x11659}, {0x11660, 0x1166C},
{0x11680, 0x116B9}, {0x116C0, 0x116C9}, {0x11700, 0x1171A},
{0x1171D, 0x1172B}, {0x11730, 0x11746}, {0x11800, 0x1183B},
{0x118A0, 0x118F2}, {0x118FF, 0x11906}, {0x11909, 0x11909},
{0x1190C, 0x11913}, {0x11915, 0x11916}, {0x11918, 0x11935},
{0x11937, 0x11938}, {0x1193B, 0x11946}, {0x11950, 0x11959},
{0x119A0, 0x119A7}, {0x119AA, 0x119D7}, {0x119DA, 0x119E4},
{0x11A00, 0x11A47}, {0x11A50, 0x11AA2}, {0x11AB0, 0x11AF8},
{0x11C00, 0x11C08}, {0x11C0A, 0x11C36}, {0x11C38, 0x11C45},
{0x11C50, 0x11C6C}, {0x11C70, 0x11C8F}, {0x11C92, 0x11CA7},
{0x11CA9, 0x11CB6}, {0x11D00, 0x11D06}, {0x11D08, 0x11D09},
{0x11D0B, 0x11D36}, {0x11D3A, 0x11D3A}, {0x11D3C, 0x11D3D},
{0x11D3F, 0x11D47}, {0x11D50, 0x11D59}, {0x11D60, 0x11D65},
{0x11D67, 0x11D68}, {0x11D6A, 0x11D8E}, {0x11D90, 0x11D91},
{0x11D93, 0x11D98}, {0x11DA0, 0x11DA9}, {0x11EE0, 0x11EF8},
{0x11FB0, 0x11FB0}, {0x11FC0, 0x11FF1}, {0x11FFF, 0x12399},
{0x12400, 0x1246E}, {0x12470, 0x12474}, {0x12480, 0x12543},
{0x12F90, 0x12FF2}, {0x13000, 0x1342E}, {0x14400, 0x14646},
{0x16800, 0x16A38}, {0x16A40, 0x16A5E}, {0x16A60, 0x16A69},
{0x16A6E, 0x16ABE}, {0x16AC0, 0x16AC9}, {0x16AD0, 0x16AED},
{0x16AF0, 0x16AF5}, {0x16B00, 0x16B45}, {0x16B50, 0x16B59},
{0x16B5B, 0x16B61}, {0x16B63, 0x16B77}, {0x16B7D, 0x16B8F},
{0x16E40, 0x16E9A}, {0x16F00, 0x16F4A}, {0x16F4F, 0x16F87},
{0x16F8F, 0x16F9F}, {0x16FE0, 0x16FE4}, {0x16FF0, 0x16FF1},
{0x17000, 0x187F7}, {0x18800, 0x18CD5}, {0x18D00, 0x18D08},
{0x1AFF0, 0x1AFF3}, {0x1AFF5, 0x1AFFB}, {0x1AFFD, 0x1AFFE},
{0x1B000, 0x1B122}, {0x1B150, 0x1B152}, {0x1B164, 0x1B167},
{0x1B170, 0x1B2FB}, {0x1BC00, 0x1BC6A}, {0x1BC70, 0x1BC7C},
{0x1BC80, 0x1BC88}, {0x1BC90, 0x1BC99}, {0x1BC9C, 0x1BC9F},
{0x1CF00, 0x1CF2D}, {0x1CF30, 0x1CF46}, {0x1CF50, 0x1CFC3},
{0x1D000, 0x1D0F5}, {0x1D100, 0x1D126}, {0x1D129, 0x1D172},
{0x1D17B, 0x1D1EA}, {0x1D200, 0x1D245}, {0x1D2E0, 0x1D2F3},
{0x1D300, 0x1D356}, {0x1D360, 0x1D378}, {0x1D400, 0x1D454},
{0x1D456, 0x1D49C}, {0x1D49E, 0x1D49F}, {0x1D4A2, 0x1D4A2},
{0x1D4A5, 0x1D4A6}, {0x1D4A9, 0x1D4AC}, {0x1D4AE, 0x1D4B9},
{0x1D4BB, 0x1D4BB}, {0x1D4BD, 0x1D4C3}, {0x1D4C5, 0x1D505},
{0x1D507, 0x1D50A}, {0x1D50D, 0x1D514}, {0x1D516, 0x1D51C},
{0x1D51E, 0x1D539}, {0x1D53B, 0x1D53E}, {0x1D540, 0x1D544},
{0x1D546, 0x1D546}, {0x1D54A, 0x1D550}, {0x1D552, 0x1D6A5},
{0x1D6A8, 0x1D7CB}, {0x1D7CE, 0x1DA8B}, {0x1DA9B, 0x1DA9F},
{0x1DAA1, 0x1DAAF}, {0x1DF00, 0x1DF1E}, {0x1E000, 0x1E006},
{0x1E008, 0x1E018}, {0x1E01B, 0x1E021}, {0x1E023, 0x1E024},
{0x1E026, 0x1E02A}, {0x1E100, 0x1E12C}, {0x1E130, 0x1E13D},
{0x1E140, 0x1E149}, {0x1E14E, 0x1E14F}, {0x1E290, 0x1E2AE},
{0x1E2C0, 0x1E2F9}, {0x1E2FF, 0x1E2FF}, {0x1E7E0, 0x1E7E6},
{0x1E7E8, 0x1E7EB}, {0x1E7ED, 0x1E7EE}, {0x1E7F0, 0x1E7FE},
{0x1E800, 0x1E8C4}, {0x1E8C7, 0x1E8D6}, {0x1E900, 0x1E94B},
{0x1E950, 0x1E959}, {0x1E95E, 0x1E95F}, {0x1EC71, 0x1ECB4},
{0x1ED01, 0x1ED3D}, {0x1EE00, 0x1EE03}, {0x1EE05, 0x1EE1F},
{0x1EE21, 0x1EE22}, {0x1EE24, 0x1EE24}, {0x1EE27, 0x1EE27},
{0x1EE29, 0x1EE32}, {0x1EE34, 0x1EE37}, {0x1EE39, 0x1EE39},
{0x1EE3B, 0x1EE3B}, {0x1EE42, 0x1EE42}, {0x1EE47, 0x1EE47},
{0x1EE49, 0x1EE49}, {0x1EE4B, 0x1EE4B}, {0x1EE4D, 0x1EE4F},
{0x1EE51, 0x1EE52}, {0x1EE54, 0x1EE54}, {0x1EE57, 0x1EE57},
{0x1EE59, 0x1EE59}, {0x1EE5B, 0x1EE5B}, {0x1EE5D, 0x1EE5D},
{0x1EE5F, 0x1EE5F}, {0x1EE61, 0x1EE62}, {0x1EE64, 0x1EE64},
{0x1EE67, 0x1EE6A}, {0x1EE6C, 0x1EE72}, {0x1EE74, 0x1EE77},
{0x1EE79, 0x1EE7C}, {0x1EE7E, 0x1EE7E}, {0x1EE80, 0x1EE89},
{0x1EE8B, 0x1EE9B}, {0x1EEA1, 0x1EEA3}, {0x1EEA5, 0x1EEA9},
{0x1EEAB, 0x1EEBB}, {0x1EEF0, 0x1EEF1}, {0x1F000, 0x1F02B},
{0x1F030, 0x1F093}, {0x1F0A0, 0x1F0AE}, {0x1F0B1, 0x1F0BF},
{0x1F0C1, 0x1F0CF}, {0x1F0D1, 0x1F0F5}, {0x1F100, 0x1F1AD},
{0x1F1E6, 0x1F202}, {0x1F210, 0x1F23B}, {0x1F240, 0x1F248},
{0x1F250, 0x1F251}, {0x1F260, 0x1F265}, {0x1F300, 0x1F6D7},
{0x1F6DD, 0x1F6EC}, {0x1F6F0, 0x1F6FC}, {0x1F700, 0x1F773},
{0x1F780, 0x1F7D8}, {0x1F7E0, 0x1F7EB}, {0x1F7F0, 0x1F7F0},
{0x1F800, 0x1F80B}, {0x1F810, 0x1F847}, {0x1F850, 0x1F859},
{0x1F860, 0x1F887}, {0x1F890, 0x1F8AD}, {0x1F8B0, 0x1F8B1},
{0x1F900, 0x1FA53}, {0x1FA60, 0x1FA6D}, {0x1FA70, 0x1FA74},
{0x1FA78, 0x1FA7C}, {0x1FA80, 0x1FA86}, {0x1FA90, 0x1FAAC},
{0x1FAB0, 0x1FABA}, {0x1FAC0, 0x1FAC5}, {0x1FAD0, 0x1FAD9},
{0x1FAE0, 0x1FAE7}, {0x1FAF0, 0x1FAF6}, {0x1FB00, 0x1FB92},
{0x1FB94, 0x1FBCA}, {0x1FBF0, 0x1FBF9}, {0x20000, 0x2A6DF},
{0x2A700, 0x2B738}, {0x2B740, 0x2B81D}, {0x2B820, 0x2CEA1},
{0x2CEB0, 0x2EBE0}, {0x2F800, 0x2FA1D}, {0x30000, 0x3134A},
{0xE0100, 0xE01EF}};
static const UnicodeCharSet Printables(PrintableRanges);
// Clang special cases 0x00AD (SOFT HYPHEN) which is rendered as an actual
// hyphen in most terminals.
return UCS == 0x00AD || Printables.contains(UCS);
}
/// Unicode code points of the Cf category are considered
/// fornatting characters.
bool isFormatting(int UCS) {
// https://unicode.org/Public/14.0.0/ucdxml/
static const UnicodeCharRange Cf[] = {
{0x00AD, 0x00AD}, {0x0600, 0x0605}, {0x061C, 0x061C},
{0x06DD, 0x06DD}, {0x070F, 0x070F}, {0x0890, 0x0891},
{0x08E2, 0x08E2}, {0x180E, 0x180E}, {0x200B, 0x200F},
{0x202A, 0x202E}, {0x2060, 0x2064}, {0x2066, 0x206F},
{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFB}, {0x110BD, 0x110BD},
{0x110CD, 0x110CD}, {0x13430, 0x13438}, {0x1BCA0, 0x1BCA3},
{0x1D173, 0x1D17A}, {0xE0001, 0xE0001}, {0xE0020, 0xE007F}};
static const UnicodeCharSet Format(Cf);
return Format.contains(UCS);
}
/// Gets the number of positions a character is likely to occupy when output
/// on a terminal ("character width"). This depends on the implementation of the
/// terminal, and there's no standard definition of character width.
/// The implementation defines it in a way that is expected to be compatible
/// with a generic Unicode-capable terminal.
/// \return Character width:
/// * ErrorNonPrintableCharacter (-1) for non-printable characters (as
/// identified by isPrintable);
/// * 0 for non-spacing and enclosing combining marks;
/// * 2 for CJK characters excluding halfwidth forms;
/// * 1 for all remaining characters.
static inline int charWidth(int UCS)
{
if (!isPrintable(UCS))
return ErrorNonPrintableCharacter;
// Sorted list of non-spacing and enclosing combining mark intervals as
// defined in "3.6 Combination" of
// http://www.unicode.org/versions/Unicode6.2.0/UnicodeStandard-6.2.pdf
static const UnicodeCharRange CombiningCharacterRanges[] = {
{ 0x0300, 0x036F }, { 0x0483, 0x0489 }, { 0x0591, 0x05BD },
{ 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 }, { 0x05C4, 0x05C5 },
{ 0x05C7, 0x05C7 }, { 0x0610, 0x061A }, { 0x064B, 0x065F },
{ 0x0670, 0x0670 }, { 0x06D6, 0x06DC }, { 0x06DF, 0x06E4 },
{ 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED }, { 0x0711, 0x0711 },
{ 0x0730, 0x074A }, { 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 },
{ 0x0816, 0x0819 }, { 0x081B, 0x0823 }, { 0x0825, 0x0827 },
{ 0x0829, 0x082D }, { 0x0859, 0x085B }, { 0x08E4, 0x08FE },
{ 0x0900, 0x0902 }, { 0x093A, 0x093A }, { 0x093C, 0x093C },
{ 0x0941, 0x0948 }, { 0x094D, 0x094D }, { 0x0951, 0x0957 },
{ 0x0962, 0x0963 }, { 0x0981, 0x0981 }, { 0x09BC, 0x09BC },
{ 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD }, { 0x09E2, 0x09E3 },
{ 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C }, { 0x0A41, 0x0A42 },
{ 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D }, { 0x0A51, 0x0A51 },
{ 0x0A70, 0x0A71 }, { 0x0A75, 0x0A75 }, { 0x0A81, 0x0A82 },
{ 0x0ABC, 0x0ABC }, { 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 },
{ 0x0ACD, 0x0ACD }, { 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 },
{ 0x0B3C, 0x0B3C }, { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B44 },
{ 0x0B4D, 0x0B4D }, { 0x0B56, 0x0B56 }, { 0x0B62, 0x0B63 },
{ 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 }, { 0x0BCD, 0x0BCD },
{ 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 }, { 0x0C4A, 0x0C4D },
{ 0x0C55, 0x0C56 }, { 0x0C62, 0x0C63 }, { 0x0CBC, 0x0CBC },
{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
{ 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D44 }, { 0x0D4D, 0x0D4D },
{ 0x0D62, 0x0D63 }, { 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 },
{ 0x0DD6, 0x0DD6 }, { 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A },
{ 0x0E47, 0x0E4E }, { 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 },
{ 0x0EBB, 0x0EBC }, { 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 },
{ 0x0F35, 0x0F35 }, { 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 },
{ 0x0F71, 0x0F7E }, { 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 },
{ 0x0F8D, 0x0F97 }, { 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 },
{ 0x102D, 0x1030 }, { 0x1032, 0x1037 }, { 0x1039, 0x103A },
{ 0x103D, 0x103E }, { 0x1058, 0x1059 }, { 0x105E, 0x1060 },
{ 0x1071, 0x1074 }, { 0x1082, 0x1082 }, { 0x1085, 0x1086 },
{ 0x108D, 0x108D }, { 0x109D, 0x109D }, { 0x135D, 0x135F },
{ 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
{ 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
{ 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
{ 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
{ 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },
{ 0x1A17, 0x1A18 }, { 0x1A56, 0x1A56 }, { 0x1A58, 0x1A5E },
{ 0x1A60, 0x1A60 }, { 0x1A62, 0x1A62 }, { 0x1A65, 0x1A6C },
{ 0x1A73, 0x1A7C }, { 0x1A7F, 0x1A7F }, { 0x1B00, 0x1B03 },
{ 0x1B34, 0x1B34 }, { 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C },
{ 0x1B42, 0x1B42 }, { 0x1B6B, 0x1B73 }, { 0x1B80, 0x1B81 },
{ 0x1BA2, 0x1BA5 }, { 0x1BA8, 0x1BA9 }, { 0x1BAB, 0x1BAB },
{ 0x1BE6, 0x1BE6 }, { 0x1BE8, 0x1BE9 }, { 0x1BED, 0x1BED },
{ 0x1BEF, 0x1BF1 }, { 0x1C2C, 0x1C33 }, { 0x1C36, 0x1C37 },
{ 0x1CD0, 0x1CD2 }, { 0x1CD4, 0x1CE0 }, { 0x1CE2, 0x1CE8 },
{ 0x1CED, 0x1CED }, { 0x1CF4, 0x1CF4 }, { 0x1DC0, 0x1DE6 },
{ 0x1DFC, 0x1DFF }, { 0x20D0, 0x20F0 }, { 0x2CEF, 0x2CF1 },
{ 0x2D7F, 0x2D7F }, { 0x2DE0, 0x2DFF }, { 0x302A, 0x302D },
{ 0x3099, 0x309A }, { 0xA66F, 0xA672 }, { 0xA674, 0xA67D },
{ 0xA69F, 0xA69F }, { 0xA6F0, 0xA6F1 }, { 0xA802, 0xA802 },
{ 0xA806, 0xA806 }, { 0xA80B, 0xA80B }, { 0xA825, 0xA826 },
{ 0xA8C4, 0xA8C4 }, { 0xA8E0, 0xA8F1 }, { 0xA926, 0xA92D },
{ 0xA947, 0xA951 }, { 0xA980, 0xA982 }, { 0xA9B3, 0xA9B3 },
{ 0xA9B6, 0xA9B9 }, { 0xA9BC, 0xA9BC }, { 0xAA29, 0xAA2E },
{ 0xAA31, 0xAA32 }, { 0xAA35, 0xAA36 }, { 0xAA43, 0xAA43 },
{ 0xAA4C, 0xAA4C }, { 0xAAB0, 0xAAB0 }, { 0xAAB2, 0xAAB4 },
{ 0xAAB7, 0xAAB8 }, { 0xAABE, 0xAABF }, { 0xAAC1, 0xAAC1 },
{ 0xAAEC, 0xAAED }, { 0xAAF6, 0xAAF6 }, { 0xABE5, 0xABE5 },
{ 0xABE8, 0xABE8 }, { 0xABED, 0xABED }, { 0xFB1E, 0xFB1E },
{ 0xFE00, 0xFE0F }, { 0xFE20, 0xFE26 }, { 0x101FD, 0x101FD },
{ 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },
{ 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x11001, 0x11001 },
{ 0x11038, 0x11046 }, { 0x11080, 0x11081 }, { 0x110B3, 0x110B6 },
{ 0x110B9, 0x110BA }, { 0x11100, 0x11102 }, { 0x11127, 0x1112B },
{ 0x1112D, 0x11134 }, { 0x11180, 0x11181 }, { 0x111B6, 0x111BE },
{ 0x116AB, 0x116AB }, { 0x116AD, 0x116AD }, { 0x116B0, 0x116B5 },
{ 0x116B7, 0x116B7 }, { 0x16F8F, 0x16F92 }, { 0x1D167, 0x1D169 },
{ 0x1D17B, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },
{ 0x1D242, 0x1D244 }, { 0xE0100, 0xE01EF },
};
static const UnicodeCharSet CombiningCharacters(CombiningCharacterRanges);
if (CombiningCharacters.contains(UCS))
return 0;
static const UnicodeCharRange DoubleWidthCharacterRanges[] = {
// Hangul Jamo
{ 0x1100, 0x11FF },
// Deprecated fullwidth angle brackets
{ 0x2329, 0x232A },
// CJK Misc, CJK Unified Ideographs, Yijing Hexagrams, Yi
// excluding U+303F (IDEOGRAPHIC HALF FILL SPACE)
{ 0x2E80, 0x303E }, { 0x3040, 0xA4CF },
// Hangul
{ 0xAC00, 0xD7A3 }, { 0xD7B0, 0xD7C6 }, { 0xD7CB, 0xD7FB },
// CJK Unified Ideographs
{ 0xF900, 0xFAFF },
// Vertical forms
{ 0xFE10, 0xFE19 },
// CJK Compatibility Forms + Small Form Variants
{ 0xFE30, 0xFE6F },
// Fullwidth forms
{ 0xFF01, 0xFF60 }, { 0xFFE0, 0xFFE6 },
// CJK Unified Ideographs
{ 0x20000, 0x2A6DF }, { 0x2A700, 0x2B81F }, { 0x2F800, 0x2FA1F }
};
static const UnicodeCharSet DoubleWidthCharacters(DoubleWidthCharacterRanges);
if (DoubleWidthCharacters.contains(UCS))
return 2;
return 1;
}
static bool isprintableascii(char c) { return c > 31 && c < 127; }
int columnWidthUTF8(StringRef Text) {
unsigned ColumnWidth = 0;
unsigned Length;
for (size_t i = 0, e = Text.size(); i < e; i += Length) {
Length = getNumBytesForUTF8(Text[i]);
// fast path for ASCII characters
if (Length == 1) {
if (!isprintableascii(Text[i]))
return ErrorNonPrintableCharacter;
ColumnWidth += 1;
continue;
}
if (Length <= 0 || i + Length > Text.size())
return ErrorInvalidUTF8;
UTF32 buf[1];
const UTF8 *Start = reinterpret_cast<const UTF8 *>(Text.data() + i);
UTF32 *Target = &buf[0];
if (conversionOK != ConvertUTF8toUTF32(&Start, Start + Length, &Target,
Target + 1, strictConversion))
return ErrorInvalidUTF8;
int Width = charWidth(buf[0]);
if (Width < 0)
return ErrorNonPrintableCharacter;
ColumnWidth += Width;
}
return ColumnWidth;
}
} // namespace unicode
} // namespace sys
} // namespace llvm
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