// -*- 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
//
//===----------------------------------------------------------------------===//
// WARNING, this entire header is generated by
// utils/generate_extended_grapheme_cluster_table.py
// DO NOT MODIFY!
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//
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// for definitions of Unicode Inc.'s Data Files and Software.
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// or Software are furnished to do so, provided that either
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#ifndef _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H
#define _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H
#include <__algorithm/ranges_upper_bound.h>
#include <__config>
#include <__iterator/access.h>
#include <cstddef>
#include <cstdint>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 20
namespace __extended_grapheme_custer_property_boundary {
enum class __property : uint8_t {
// Values generated from the data files.
__CR,
__Control,
__Extend,
__Extended_Pictographic,
__L,
__LF,
__LV,
__LVT,
__Prepend,
__Regional_Indicator,
__SpacingMark,
__T,
__V,
__ZWJ,
// The properies below aren't stored in the "database".
// Text position properties.
__sot,
__eot,
// The code unit has none of above properties.
__none
};
/// The entries of the extended grapheme cluster bondary property table.
///
/// The data is generated from
/// - https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakProperty.txt
/// - https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt
///
/// The data has 3 values
/// - bits [0, 3] The property. One of the values generated from the datafiles
/// of \ref __property
/// - bits [4, 10] The size of the range.
/// - bits [11, 31] The lower bound code point of the range. The upper bound of
/// the range is lower bound + size.
///
/// The 7 bits for the size allow a maximum range of 128 elements. Some ranges
/// in the Unicode tables are larger. They are stored in multiple consecutive
/// ranges in the data table. An alternative would be to store the sizes in a
/// separate 16-bit value. The original MSVC STL code had such an approach, but
/// this approach uses less space for the data and is about 4% faster in the
/// following benchmark.
/// libcxx/benchmarks/std_format_spec_string_unicode.bench.cpp
// clang-format off
_LIBCPP_HIDE_FROM_ABI inline constexpr uint32_t __entries[1496] = {
0x00000091,
0x00005005,
0x00005811,
0x00006800,
0x00007111,
0x0003fa01,
0x00054803,
0x00056801,
0x00057003,
0x001806f2,
0x00241862,
0x002c8ac2,
0x002df802,
0x002e0812,
0x002e2012,
0x002e3802,
0x00300058,
0x003080a2,
0x0030e001,
0x00325942,
0x00338002,
0x0036b062,
0x0036e808,
0x0036f852,
0x00373812,
0x00375032,
0x00387808,
0x00388802,
0x003981a2,
0x003d30a2,
0x003f5882,
0x003fe802,
0x0040b032,
0x0040d882,
0x00412822,
0x00414842,
0x0042c822,
0x00448018,
0x0044c072,
0x00465172,
0x00471008,
0x004719f2,
0x0048180a,
0x0049d002,
0x0049d80a,
0x0049e002,
0x0049f02a,
0x004a0872,
0x004a483a,
0x004a6802,
0x004a701a,
0x004a8862,
0x004b1012,
0x004c0802,
0x004c101a,
0x004de002,
0x004df002,
0x004df81a,
0x004e0832,
0x004e381a,
0x004e581a,
0x004e6802,
0x004eb802,
0x004f1012,
0x004ff002,
0x00500812,
0x0050180a,
0x0051e002,
0x0051f02a,
0x00520812,
0x00523812,
0x00525822,
0x00528802,
0x00538012,
0x0053a802,
0x00540812,
0x0054180a,
0x0055e002,
0x0055f02a,
0x00560842,
0x00563812,
0x0056480a,
0x0056581a,
0x00566802,
0x00571012,
0x0057d052,
0x00580802,
0x0058101a,
0x0059e002,
0x0059f012,
0x005a000a,
0x005a0832,
0x005a381a,
0x005a581a,
0x005a6802,
0x005aa822,
0x005b1012,
0x005c1002,
0x005df002,
0x005df80a,
0x005e0002,
0x005e081a,
0x005e302a,
0x005e502a,
0x005e6802,
0x005eb802,
0x00600002,
0x0060082a,
0x00602002,
0x0061e002,
0x0061f022,
0x0062083a,
0x00623022,
0x00625032,
0x0062a812,
0x00631012,
0x00640802,
0x0064101a,
0x0065e002,
0x0065f00a,
0x0065f802,
0x0066001a,
0x00661002,
0x0066181a,
0x00663002,
0x0066381a,
0x0066501a,
0x00666012,
0x0066a812,
0x00671012,
0x0067980a,
0x00680012,
0x0068101a,
0x0069d812,
0x0069f002,
0x0069f81a,
0x006a0832,
0x006a302a,
0x006a502a,
0x006a6802,
0x006a7008,
0x006ab802,
0x006b1012,
0x006c0802,
0x006c101a,
0x006e5002,
0x006e7802,
0x006e801a,
0x006e9022,
0x006eb002,
0x006ec06a,
0x006ef802,
0x006f901a,
0x00718802,
0x0071980a,
0x0071a062,
0x00723872,
0x00758802,
0x0075980a,
0x0075a082,
0x00764062,
0x0078c012,
0x0079a802,
0x0079b802,
0x0079c802,
0x0079f01a,
0x007b88d2,
0x007bf80a,
0x007c0042,
0x007c3012,
0x007c68a2,
0x007cca32,
0x007e3002,
0x00816832,
0x0081880a,
0x00819052,
0x0081c812,
0x0081d81a,
0x0081e812,
0x0082b01a,
0x0082c012,
0x0082f022,
0x00838832,
0x00841002,
0x0084200a,
0x00842812,
0x00846802,
0x0084e802,
0x008805f4,
0x008b047c,
0x008d457b,
0x009ae822,
0x00b89022,
0x00b8a80a,
0x00b99012,
0x00b9a00a,
0x00ba9012,
0x00bb9012,
0x00bda012,
0x00bdb00a,
0x00bdb862,
0x00bdf07a,
0x00be3002,
0x00be381a,
0x00be48a2,
0x00bee802,
0x00c05822,
0x00c07001,
0x00c07802,
0x00c42812,
0x00c54802,
0x00c90022,
0x00c9183a,
0x00c93812,
0x00c9482a,
0x00c9801a,
0x00c99002,
0x00c9985a,
0x00c9c822,
0x00d0b812,
0x00d0c81a,
0x00d0d802,
0x00d2a80a,
0x00d2b002,
0x00d2b80a,
0x00d2c062,
0x00d30002,
0x00d31002,
0x00d32872,
0x00d3685a,
0x00d39892,
0x00d3f802,
0x00d581e2,
0x00d80032,
0x00d8200a,
0x00d9a062,
0x00d9d80a,
0x00d9e002,
0x00d9e84a,
0x00da1002,
0x00da181a,
0x00db5882,
0x00dc0012,
0x00dc100a,
0x00dd080a,
0x00dd1032,
0x00dd301a,
0x00dd4012,
0x00dd500a,
0x00dd5822,
0x00df3002,
0x00df380a,
0x00df4012,
0x00df502a,
0x00df6802,
0x00df700a,
0x00df7822,
0x00df901a,
0x00e1207a,
0x00e16072,
0x00e1a01a,
0x00e1b012,
0x00e68022,
0x00e6a0c2,
0x00e7080a,
0x00e71062,
0x00e76802,
0x00e7a002,
0x00e7b80a,
0x00e7c012,
0x00ee03f2,
0x01005801,
0x01006002,
0x0100680d,
0x01007011,
0x01014061,
0x0101e003,
0x01024803,
0x010300f1,
0x01068202,
0x01091003,
0x0109c803,
0x010ca053,
0x010d4813,
0x0118d013,
0x01194003,
0x011c4003,
0x011e7803,
0x011f48a3,
0x011fc023,
0x01261003,
0x012d5013,
0x012db003,
0x012e0003,
0x012fd833,
0x01300053,
0x013038b3,
0x0130a713,
0x01348753,
0x013840a3,
0x0138a003,
0x0138b003,
0x0138e803,
0x01390803,
0x01394003,
0x01399813,
0x013a2003,
0x013a3803,
0x013a6003,
0x013a7003,
0x013a9823,
0x013ab803,
0x013b1843,
0x013ca823,
0x013d0803,
0x013d8003,
0x013df803,
0x0149a013,
0x01582823,
0x0158d813,
0x015a8003,
0x015aa803,
0x01677822,
0x016bf802,
0x016f01f2,
0x01815052,
0x01818003,
0x0181e803,
0x0184c812,
0x0194b803,
0x0194c803,
0x05337832,
0x0533a092,
0x0534f012,
0x05378012,
0x05401002,
0x05403002,
0x05405802,
0x0541181a,
0x05412812,
0x0541380a,
0x05416002,
0x0544001a,
0x0545a0fa,
0x05462012,
0x05470112,
0x0547f802,
0x05493072,
0x054a38a2,
0x054a901a,
0x054b01c4,
0x054c0022,
0x054c180a,
0x054d9802,
0x054da01a,
0x054db032,
0x054dd01a,
0x054de012,
0x054df02a,
0x054f2802,
0x05514852,
0x0551781a,
0x05518812,
0x0551981a,
0x0551a812,
0x05521802,
0x05526002,
0x0552680a,
0x0553e002,
0x05558002,
0x05559022,
0x0555b812,
0x0555f012,
0x05560802,
0x0557580a,
0x05576012,
0x0557701a,
0x0557a80a,
0x0557b002,
0x055f181a,
0x055f2802,
0x055f301a,
0x055f4002,
0x055f481a,
0x055f600a,
0x055f6802,
0x05600006,
0x056009a7,
0x0560e006,
0x0560e9a7,
0x0561c006,
0x0561c9a7,
0x0562a006,
0x0562a9a7,
0x05638006,
0x056389a7,
0x05646006,
0x056469a7,
0x05654006,
0x056549a7,
0x05662006,
0x056629a7,
0x05670006,
0x056709a7,
0x0567e006,
0x0567e9a7,
0x0568c006,
0x0568c9a7,
0x0569a006,
0x0569a9a7,
0x056a8006,
0x056a89a7,
0x056b6006,
0x056b69a7,
0x056c4006,
0x056c49a7,
0x056d2006,
0x056d29a7,
0x056e0006,
0x056e09a7,
0x056ee006,
0x056ee9a7,
0x056fc006,
0x056fc9a7,
0x0570a006,
0x0570a9a7,
0x05718006,
0x057189a7,
0x05726006,
0x057269a7,
0x05734006,
0x057349a7,
0x05742006,
0x057429a7,
0x05750006,
0x057509a7,
0x0575e006,
0x0575e9a7,
0x0576c006,
0x0576c9a7,
0x0577a006,
0x0577a9a7,
0x05788006,
0x057889a7,
0x05796006,
0x057969a7,
0x057a4006,
0x057a49a7,
0x057b2006,
0x057b29a7,
0x057c0006,
0x057c09a7,
0x057ce006,
0x057ce9a7,
0x057dc006,
0x057dc9a7,
0x057ea006,
0x057ea9a7,
0x057f8006,
0x057f89a7,
0x05806006,
0x058069a7,
0x05814006,
0x058149a7,
0x05822006,
0x058229a7,
0x05830006,
0x058309a7,
0x0583e006,
0x0583e9a7,
0x0584c006,
0x0584c9a7,
0x0585a006,
0x0585a9a7,
0x05868006,
0x058689a7,
0x05876006,
0x058769a7,
0x05884006,
0x058849a7,
0x05892006,
0x058929a7,
0x058a0006,
0x058a09a7,
0x058ae006,
0x058ae9a7,
0x058bc006,
0x058bc9a7,
0x058ca006,
0x058ca9a7,
0x058d8006,
0x058d89a7,
0x058e6006,
0x058e69a7,
0x058f4006,
0x058f49a7,
0x05902006,
0x059029a7,
0x05910006,
0x059109a7,
0x0591e006,
0x0591e9a7,
0x0592c006,
0x0592c9a7,
0x0593a006,
0x0593a9a7,
0x05948006,
0x059489a7,
0x05956006,
0x059569a7,
0x05964006,
0x059649a7,
0x05972006,
0x059729a7,
0x05980006,
0x059809a7,
0x0598e006,
0x0598e9a7,
0x0599c006,
0x0599c9a7,
0x059aa006,
0x059aa9a7,
0x059b8006,
0x059b89a7,
0x059c6006,
0x059c69a7,
0x059d4006,
0x059d49a7,
0x059e2006,
0x059e29a7,
0x059f0006,
0x059f09a7,
0x059fe006,
0x059fe9a7,
0x05a0c006,
0x05a0c9a7,
0x05a1a006,
0x05a1a9a7,
0x05a28006,
0x05a289a7,
0x05a36006,
0x05a369a7,
0x05a44006,
0x05a449a7,
0x05a52006,
0x05a529a7,
0x05a60006,
0x05a609a7,
0x05a6e006,
0x05a6e9a7,
0x05a7c006,
0x05a7c9a7,
0x05a8a006,
0x05a8a9a7,
0x05a98006,
0x05a989a7,
0x05aa6006,
0x05aa69a7,
0x05ab4006,
0x05ab49a7,
0x05ac2006,
0x05ac29a7,
0x05ad0006,
0x05ad09a7,
0x05ade006,
0x05ade9a7,
0x05aec006,
0x05aec9a7,
0x05afa006,
0x05afa9a7,
0x05b08006,
0x05b089a7,
0x05b16006,
0x05b169a7,
0x05b24006,
0x05b249a7,
0x05b32006,
0x05b329a7,
0x05b40006,
0x05b409a7,
0x05b4e006,
0x05b4e9a7,
0x05b5c006,
0x05b5c9a7,
0x05b6a006,
0x05b6a9a7,
0x05b78006,
0x05b789a7,
0x05b86006,
0x05b869a7,
0x05b94006,
0x05b949a7,
0x05ba2006,
0x05ba29a7,
0x05bb0006,
0x05bb09a7,
0x05bbe006,
0x05bbe9a7,
0x05bcc006,
0x05bcc9a7,
0x05bda006,
0x05bda9a7,
0x05be8006,
0x05be89a7,
0x05bf6006,
0x05bf69a7,
0x05c04006,
0x05c049a7,
0x05c12006,
0x05c129a7,
0x05c20006,
0x05c209a7,
0x05c2e006,
0x05c2e9a7,
0x05c3c006,
0x05c3c9a7,
0x05c4a006,
0x05c4a9a7,
0x05c58006,
0x05c589a7,
0x05c66006,
0x05c669a7,
0x05c74006,
0x05c749a7,
0x05c82006,
0x05c829a7,
0x05c90006,
0x05c909a7,
0x05c9e006,
0x05c9e9a7,
0x05cac006,
0x05cac9a7,
0x05cba006,
0x05cba9a7,
0x05cc8006,
0x05cc89a7,
0x05cd6006,
0x05cd69a7,
0x05ce4006,
0x05ce49a7,
0x05cf2006,
0x05cf29a7,
0x05d00006,
0x05d009a7,
0x05d0e006,
0x05d0e9a7,
0x05d1c006,
0x05d1c9a7,
0x05d2a006,
0x05d2a9a7,
0x05d38006,
0x05d389a7,
0x05d46006,
0x05d469a7,
0x05d54006,
0x05d549a7,
0x05d62006,
0x05d629a7,
0x05d70006,
0x05d709a7,
0x05d7e006,
0x05d7e9a7,
0x05d8c006,
0x05d8c9a7,
0x05d9a006,
0x05d9a9a7,
0x05da8006,
0x05da89a7,
0x05db6006,
0x05db69a7,
0x05dc4006,
0x05dc49a7,
0x05dd2006,
0x05dd29a7,
0x05de0006,
0x05de09a7,
0x05dee006,
0x05dee9a7,
0x05dfc006,
0x05dfc9a7,
0x05e0a006,
0x05e0a9a7,
0x05e18006,
0x05e189a7,
0x05e26006,
0x05e269a7,
0x05e34006,
0x05e349a7,
0x05e42006,
0x05e429a7,
0x05e50006,
0x05e509a7,
0x05e5e006,
0x05e5e9a7,
0x05e6c006,
0x05e6c9a7,
0x05e7a006,
0x05e7a9a7,
0x05e88006,
0x05e889a7,
0x05e96006,
0x05e969a7,
0x05ea4006,
0x05ea49a7,
0x05eb2006,
0x05eb29a7,
0x05ec0006,
0x05ec09a7,
0x05ece006,
0x05ece9a7,
0x05edc006,
0x05edc9a7,
0x05eea006,
0x05eea9a7,
0x05ef8006,
0x05ef89a7,
0x05f06006,
0x05f069a7,
0x05f14006,
0x05f149a7,
0x05f22006,
0x05f229a7,
0x05f30006,
0x05f309a7,
0x05f3e006,
0x05f3e9a7,
0x05f4c006,
0x05f4c9a7,
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0x706787f1,
0x706b87f1,
0x706f87f1,
0x707387f1,
0x707787f1,
0x707b87f1,
0x707f80f1};
// clang-format on
/// Returns the extended grapheme cluster bondary property of a code point.
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr __property __get_property(const char32_t __code_point) noexcept {
// The algorithm searches for the upper bound of the range and, when found,
// steps back one entry. This algorithm is used since the code point can be
// anywhere in the range. After a lower bound is found the next step is to
// compare whether the code unit is indeed in the range.
//
// Since the entry contains a code unit, size, and property the code point
// being sought needs to be adjusted. Just shifting the code point to the
// proper position doesn't work; suppose an entry has property 0, size 1,
// and lower bound 3. This results in the entry 0x1810.
// When searching for code point 3 it will search for 0x1800, find 0x1810
// and moves to the previous entry. Thus the lower bound value will never
// be found.
// The simple solution is to set the bits belonging to the property and
// size. Then the upper bound for code point 3 will return the entry after
// 0x1810. After moving to the previous entry the algorithm arrives at the
// correct entry.
ptrdiff_t __i = std::ranges::upper_bound(__entries, (__code_point << 11) | 0x7ffu) - __entries;
if (__i == 0)
return __property::__none;
--__i;
uint32_t __upper_bound = (__entries[__i] >> 11) + ((__entries[__i] >> 4) & 0x7f);
if (__code_point <= __upper_bound)
return static_cast<__property>(__entries[__i] & 0xf);
return __property::__none;
}
} // namespace __extended_grapheme_custer_property_boundary
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H
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