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#ifndef GHOSTTY_SIMD_CPW_HELPERS_#define GHOSTTY_SIMD_CPW_HELPERS_
#ifdef NDEBUG#define GHOSTTY_SIMD_ASSERT(cond) ((void)0)#else#define GHOSTTY_SIMD_ASSERT(cond) \ do { \ if (!(cond)) __builtin_trap();\ } while (0)#endif
// Replacement for std::size() that works without libc++.template <typename T, size_t N>constexpr size_t array_size(const T (&)[N]) { return N; }
// Constexpr min/max element over a C array (replaces std::min_element/// std::max_element).template <typename T, size_t N>constexpr T array_min(const T (&a)[N]) { T m = a[0]; for (size_t i = 1; i < N; ++i) if (a[i] != 0 && (m == 0 || a[i] < m)) m = a[i]; return m;}template <typename T, size_t N>constexpr T array_max(const T (&a)[N]) { T m = a[0]; for (size_t i = 1; i < N; ++i) if (a[i] > m) m = a[i]; return m;}
#endif // GHOSTTY_SIMD_CPW_HELPERS_
HWY_BEFORE_NAMESPACE();namespace ghostty {namespace HWY_NAMESPACE {
namespace hn = hwy::HWY_NAMESPACE;
// East Asian WidthHWY_ALIGN constexpr uint32_t eaw_gte32[] = { 0x16fe0, 0x16ff0, 0x17000, 0x18800, 0x18d00, 0x1aff0, 0x1aff5, 0x1affd, 0x1b000, 0x1b132, 0x1b150, 0x1b155, 0x1b164, 0x1b170, 0x1f004, 0x1f0cf, 0x1f18e, 0x1f191, 0x1f200, 0x1f210, 0x1f240, 0x1f250, 0x1f260, 0x1f300, 0x1f32d, 0x1f337, 0x1f37e, 0x1f3a0, 0x1f3cf, 0x1f3e0, 0x1f3f4, 0x1f3f8, 0x1f3fb, 0x1f400, 0x1f440, 0x1f442, 0x1f4ff, 0x1f54b, 0x1f550, 0x1f57a, 0x1f595, 0x1f5a4, 0x1f5fb, 0x1f680, 0x1f6cc, 0x1f6d0, 0x1f6d5, 0x1f6dc, 0x1f6eb, 0x1f6f4, 0x1f7e0, 0x1f7f0, 0x1f90c, 0x1f93c, 0x1f947, 0x1fa70, 0x1fa80, 0x1fa90, 0x1fabf, 0x1face, 0x1fae0, 0x1faf0, 0x20000, 0x2a700, 0x2b740, 0x2b820, 0x2ceb0, 0x2f800, 0x30000, 0x31350, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint32_t eaw_lte32[] = { 0x16fe3, 0x16ff1, 0x187f7, 0x18cd5, 0x18d08, 0x1aff3, 0x1affb, 0x1affe, 0x1b122, 0x1b132, 0x1b152, 0x1b155, 0x1b167, 0x1b2fb, 0x1f004, 0x1f0cf, 0x1f18e, 0x1f19a, 0x1f202, 0x1f23b, 0x1f248, 0x1f251, 0x1f265, 0x1f320, 0x1f335, 0x1f37c, 0x1f393, 0x1f3ca, 0x1f3d3, 0x1f3f0, 0x1f3f4, 0x1f3fa, 0x1f3ff, 0x1f43e, 0x1f440, 0x1f4fc, 0x1f53d, 0x1f54e, 0x1f567, 0x1f57a, 0x1f596, 0x1f5a4, 0x1f64f, 0x1f6c5, 0x1f6cc, 0x1f6d2, 0x1f6d7, 0x1f6df, 0x1f6ec, 0x1f6fc, 0x1f7eb, 0x1f7f0, 0x1f93a, 0x1f945, 0x1f9ff, 0x1fa7c, 0x1fa88, 0x1fabd, 0x1fac5, 0x1fadb, 0x1fae8, 0x1faf8, 0x2a6df, 0x2b739, 0x2b81d, 0x2cea1, 0x2ebe0, 0x2fa1d, 0x3134a, 0x323af, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint16_t eaw_gte16[] = { 0x3000, 0xff01, 0xffe0, 0x1100, 0x231a, 0x2329, 0x232a, 0x23e9, 0x23f0, 0x23f3, 0x25fd, 0x2614, 0x2648, 0x267f, 0x2693, 0x26a1, 0x26aa, 0x26bd, 0x26c4, 0x26ce, 0x26d4, 0x26ea, 0x26f2, 0x26f5, 0x26fa, 0x26fd, 0x2705, 0x270a, 0x2728, 0x274c, 0x274e, 0x2753, 0x2757, 0x2795, 0x27b0, 0x27bf, 0x2b1b, 0x2b50, 0x2b55, 0x2e80, 0x2e9b, 0x2f00, 0x2ff0, 0x3001, 0x302e, 0x3041, 0x309b, 0x309d, 0x309f, 0x30a0, 0x30a1, 0x30fb, 0x30fc, 0x30ff, 0x3105, 0x3131, 0x3190, 0x3192, 0x3196, 0x31a0, 0x31c0, 0x31f0, 0x3200, 0x3220, 0x322a, 0x3250, 0x3251, 0x3260, 0x3280, 0x328a, 0x32b1, 0x32c0, 0x3400, 0x4e00, 0xa015, 0xa016, 0xa490, 0xa960, 0xac00, 0xf900, 0xfa70, 0xfe10, 0xfe30, 0xfe54, 0xfe68, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint16_t eaw_lte16[] = { 0x3000, 0xff60, 0xffe6, 0x115f, 0x231b, 0x2329, 0x232a, 0x23ec, 0x23f0, 0x23f3, 0x25fe, 0x2615, 0x2653, 0x267f, 0x2693, 0x26a1, 0x26ab, 0x26be, 0x26c5, 0x26ce, 0x26d4, 0x26ea, 0x26f3, 0x26f5, 0x26fa, 0x26fd, 0x2705, 0x270b, 0x2728, 0x274c, 0x274e, 0x2755, 0x2757, 0x2797, 0x27b0, 0x27bf, 0x2b1c, 0x2b50, 0x2b55, 0x2e99, 0x2ef3, 0x2fd5, 0x2ffb, 0x3029, 0x303e, 0x3096, 0x309c, 0x309e, 0x309f, 0x30a0, 0x30fa, 0x30fb, 0x30fe, 0x30ff, 0x312f, 0x318e, 0x3191, 0x3195, 0x319f, 0x31bf, 0x31e3, 0x31ff, 0x321e, 0x3229, 0x3247, 0x3250, 0x325f, 0x327f, 0x3289, 0x32b0, 0x32bf, 0x33ff, 0x4bdf, 0xa014, 0xa015, 0xa48c, 0xa4c6, 0xa97c, 0xd7a3, 0xfa6d, 0xfad9, 0xfe19, 0xfe52, 0xfe66, 0xfe6b, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
/// These are the ranges of codepoints that are DEFINITELY width 0.HWY_ALIGN constexpr uint32_t zero_gte32[] = { 0x110bd, 0x110cd, 0x13430, 0x1bca0, 0x1d173, 0xe0001, 0xe0020, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint32_t zero_lte32[] = { 0x110bd, 0x110cd, 0x1343f, 0x1bca3, 0x1d17a, 0xe0001, 0xe007f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint16_t zero_gte16[] = { 0xad, 0x70f, 0x890, 0x180e, 0x200b, 0x202a, 0x2060, 0x2066, 0xfeff, 0xfff9, 0x488, 0x1abe, 0x20dd, 0x20e2, 0xa670, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint16_t zero_lte16[] = { 0xad, 0x70f, 0x891, 0x180e, 0x200f, 0x202e, 0x2064, 0x206f, 0xfeff, 0xfffb, 0x489, 0x1abe, 0x20e0, 0x20e4, 0xa672, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
/// Non-spacing marksHWY_ALIGN constexpr uint32_t nsm_gte32[] = { 0x101fd, 0x102e0, 0x10376, 0x10a01, 0x10a05, 0x10a0c, 0x10a38, 0x10a3f, 0x10ae5, 0x10d24, 0x10eab, 0x10efd, 0x10f46, 0x10f82, 0x11001, 0x11038, 0x11070, 0x11073, 0x1107f, 0x110b3, 0x110b9, 0x110c2, 0x11100, 0x11127, 0x1112d, 0x11173, 0x11180, 0x111b6, 0x111c9, 0x111cf, 0x1122f, 0x11234, 0x11236, 0x1123e, 0x11241, 0x112df, 0x112e3, 0x11300, 0x1133b, 0x11340, 0x11366, 0x11370, 0x11438, 0x11442, 0x11446, 0x1145e, 0x114b3, 0x114ba, 0x114bf, 0x114c2, 0x115b2, 0x115bc, 0x115bf, 0x115dc, 0x11633, 0x1163d, 0x1163f, 0x116ab, 0x116ad, 0x116b0, 0x116b7, 0x1171d, 0x11722, 0x11727, 0x1182f, 0x11839, 0x1193b, 0x1193e, 0x11943, 0x119d4, 0x119da, 0x119e0, 0x11a01, 0x11a33, 0x11a3b, 0x11a47, 0x11a51, 0x11a59, 0x11a8a, 0x11a98, 0x11c30, 0x11c38, 0x11c3f, 0x11c92, 0x11caa, 0x11cb2, 0x11cb5, 0x11d31, 0x11d3a, 0x11d3c, 0x11d3f, 0x11d47, 0x11d90, 0x11d95, 0x11d97, 0x11ef3, 0x11f00, 0x11f36, 0x11f40, 0x11f42, 0x13440, 0x13447, 0x16af0, 0x16b30, 0x16f4f, 0x16f8f, 0x16fe4, 0x1bc9d, 0x1cf00, 0x1cf30, 0x1d167, 0x1d17b, 0x1d185, 0x1d1aa, 0x1d242, 0x1da00, 0x1da3b, 0x1da75, 0x1da84, 0x1da9b, 0x1daa1, 0x1e000, 0x1e008, 0x1e01b, 0x1e023, 0x1e026, 0x1e08f, 0x1e130, 0x1e2ae, 0x1e2ec, 0x1e4ec, 0x1e8d0, 0x1e944, 0xe0100, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint32_t nsm_lte32[] = { 0x101fd, 0x102e0, 0x1037a, 0x10a03, 0x10a06, 0x10a0f, 0x10a3a, 0x10a3f, 0x10ae6, 0x10d27, 0x10eac, 0x10eff, 0x10f50, 0x10f85, 0x11001, 0x11046, 0x11070, 0x11074, 0x11081, 0x110b6, 0x110ba, 0x110c2, 0x11102, 0x1112b, 0x11134, 0x11173, 0x11181, 0x111be, 0x111cc, 0x111cf, 0x11231, 0x11234, 0x11237, 0x1123e, 0x11241, 0x112df, 0x112ea, 0x11301, 0x1133c, 0x11340, 0x1136c, 0x11374, 0x1143f, 0x11444, 0x11446, 0x1145e, 0x114b8, 0x114ba, 0x114c0, 0x114c3, 0x115b5, 0x115bd, 0x115c0, 0x115dd, 0x1163a, 0x1163d, 0x11640, 0x116ab, 0x116ad, 0x116b5, 0x116b7, 0x1171f, 0x11725, 0x1172b, 0x11837, 0x1183a, 0x1193c, 0x1193e, 0x11943, 0x119d7, 0x119db, 0x119e0, 0x11a0a, 0x11a38, 0x11a3e, 0x11a47, 0x11a56, 0x11a5b, 0x11a96, 0x11a99, 0x11c36, 0x11c3d, 0x11c3f, 0x11ca7, 0x11cb0, 0x11cb3, 0x11cb6, 0x11d36, 0x11d3a, 0x11d3d, 0x11d45, 0x11d47, 0x11d91, 0x11d95, 0x11d97, 0x11ef4, 0x11f01, 0x11f3a, 0x11f40, 0x11f42, 0x13440, 0x13455, 0x16af4, 0x16b36, 0x16f4f, 0x16f92, 0x16fe4, 0x1bc9e, 0x1cf2d, 0x1cf46, 0x1d169, 0x1d182, 0x1d18b, 0x1d1ad, 0x1d244, 0x1da36, 0x1da6c, 0x1da75, 0x1da84, 0x1da9f, 0x1daaf, 0x1e006, 0x1e018, 0x1e021, 0x1e024, 0x1e02a, 0x1e08f, 0x1e136, 0x1e2ae, 0x1e2ef, 0x1e4ef, 0x1e8d6, 0x1e94a, 0xe01ef, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint16_t nsm_gte16[] = { 0x300, 0x483, 0x591, 0x5bf, 0x5c1, 0x5c4, 0x5c7, 0x610, 0x64b, 0x670, 0x6d6, 0x6df, 0x6e7, 0x6ea, 0x711, 0x730, 0x7a6, 0x7eb, 0x7fd, 0x816, 0x81b, 0x825, 0x829, 0x859, 0x898, 0x8ca, 0x8e3, 0x93a, 0x93c, 0x941, 0x94d, 0x951, 0x962, 0x981, 0x9bc, 0x9c1, 0x9cd, 0x9e2, 0x9fe, 0xa01, 0xa3c, 0xa41, 0xa47, 0xa4b, 0xa51, 0xa70, 0xa75, 0xa81, 0xabc, 0xac1, 0xac7, 0xacd, 0xae2, 0xafa, 0xb01, 0xb3c, 0xb3f, 0xb41, 0xb4d, 0xb55, 0xb62, 0xb82, 0xbc0, 0xbcd, 0xc00, 0xc04, 0xc3c, 0xc3e, 0xc46, 0xc4a, 0xc55, 0xc62, 0xc81, 0xcbc, 0xcbf, 0xcc6, 0xccc, 0xce2, 0xd00, 0xd3b, 0xd41, 0xd4d, 0xd62, 0xd81, 0xdca, 0xdd2, 0xdd6, 0xe31, 0xe34, 0xe47, 0xeb1, 0xeb4, 0xec8, 0xf18, 0xf35, 0xf37, 0xf39, 0xf71, 0xf80, 0xf86, 0xf8d, 0xf99, 0xfc6, 0x102d, 0x1032, 0x1039, 0x103d, 0x1058, 0x105e, 0x1071, 0x1082, 0x1085, 0x108d, 0x109d, 0x135d, 0x1712, 0x1732, 0x1752, 0x1772, 0x17b4, 0x17b7, 0x17c6, 0x17c9, 0x17dd, 0x180b, 0x180f, 0x1885, 0x18a9, 0x1920, 0x1927, 0x1932, 0x1939, 0x1a17, 0x1a1b, 0x1a56, 0x1a58, 0x1a60, 0x1a62, 0x1a65, 0x1a73, 0x1a7f, 0x1ab0, 0x1abf, 0x1b00, 0x1b34, 0x1b36, 0x1b3c, 0x1b42, 0x1b6b, 0x1b80, 0x1ba2, 0x1ba8, 0x1bab, 0x1be6, 0x1be8, 0x1bed, 0x1bef, 0x1c2c, 0x1c36, 0x1cd0, 0x1cd4, 0x1ce2, 0x1ced, 0x1cf4, 0x1cf8, 0x1dc0, 0x20d0, 0x20e1, 0x20e5, 0x2cef, 0x2d7f, 0x2de0, 0x302a, 0x3099, 0xa66f, 0xa674, 0xa69e, 0xa6f0, 0xa802, 0xa806, 0xa80b, 0xa825, 0xa82c, 0xa8c4, 0xa8e0, 0xa8ff, 0xa926, 0xa947, 0xa980, 0xa9b3, 0xa9b6, 0xa9bc, 0xa9e5, 0xaa29, 0xaa31, 0xaa35, 0xaa43, 0xaa4c, 0xaa7c, 0xaab0, 0xaab2, 0xaab7, 0xaabe, 0xaac1, 0xaaec, 0xaaf6, 0xabe5, 0xabe8, 0xabed, 0xfb1e, 0xfe00, 0xfe20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
HWY_ALIGN constexpr uint16_t nsm_lte16[] = { 0x36f, 0x487, 0x5bd, 0x5bf, 0x5c2, 0x5c5, 0x5c7, 0x61a, 0x65f, 0x670, 0x6dc, 0x6e4, 0x6e8, 0x6ed, 0x711, 0x74a, 0x7b0, 0x7f3, 0x7fd, 0x819, 0x823, 0x827, 0x82d, 0x85b, 0x89f, 0x8e1, 0x902, 0x93a, 0x93c, 0x948, 0x94d, 0x957, 0x963, 0x981, 0x9bc, 0x9c4, 0x9cd, 0x9e3, 0x9fe, 0xa02, 0xa3c, 0xa42, 0xa48, 0xa4d, 0xa51, 0xa71, 0xa75, 0xa82, 0xabc, 0xac5, 0xac8, 0xacd, 0xae3, 0xaff, 0xb01, 0xb3c, 0xb3f, 0xb44, 0xb4d, 0xb56, 0xb63, 0xb82, 0xbc0, 0xbcd, 0xc00, 0xc04, 0xc3c, 0xc40, 0xc48, 0xc4d, 0xc56, 0xc63, 0xc81, 0xcbc, 0xcbf, 0xcc6, 0xccd, 0xce3, 0xd01, 0xd3c, 0xd44, 0xd4d, 0xd63, 0xd81, 0xdca, 0xdd4, 0xdd6, 0xe31, 0xe3a, 0xe4e, 0xeb1, 0xebc, 0xece, 0xf19, 0xf35, 0xf37, 0xf39, 0xf7e, 0xf84, 0xf87, 0xf97, 0xfbc, 0xfc6, 0x1030, 0x1037, 0x103a, 0x103e, 0x1059, 0x1060, 0x1074, 0x1082, 0x1086, 0x108d, 0x109d, 0x135f, 0x1714, 0x1733, 0x1753, 0x1773, 0x17b5, 0x17bd, 0x17c6, 0x17d3, 0x17dd, 0x180d, 0x180f, 0x1886, 0x18a9, 0x1922, 0x1928, 0x1932, 0x193b, 0x1a18, 0x1a1b, 0x1a56, 0x1a5e, 0x1a60, 0x1a62, 0x1a6c, 0x1a7c, 0x1a7f, 0x1abd, 0x1ace, 0x1b03, 0x1b34, 0x1b3a, 0x1b3c, 0x1b42, 0x1b73, 0x1b81, 0x1ba5, 0x1ba9, 0x1bad, 0x1be6, 0x1be9, 0x1bed, 0x1bf1, 0x1c33, 0x1c37, 0x1cd2, 0x1ce0, 0x1ce8, 0x1ced, 0x1cf4, 0x1cf9, 0x1dff, 0x20dc, 0x20e1, 0x20f0, 0x2cf1, 0x2d7f, 0x2dff, 0x302d, 0x309a, 0xa66f, 0xa67d, 0xa69f, 0xa6f1, 0xa802, 0xa806, 0xa80b, 0xa826, 0xa82c, 0xa8c5, 0xa8f1, 0xa8ff, 0xa92d, 0xa951, 0xa982, 0xa9b3, 0xa9b9, 0xa9bd, 0xa9e5, 0xaa2e, 0xaa32, 0xaa36, 0xaa43, 0xaa4c, 0xaa7c, 0xaab0, 0xaab4, 0xaab8, 0xaabf, 0xaac1, 0xaaed, 0xaaf6, 0xabe5, 0xabe8, 0xabed, 0xfb1e, 0xfe0f, 0xfe2f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
// All our tables must be identically sizedstatic_assert(array_size(eaw_gte32) == array_size(eaw_lte32));static_assert(array_size(eaw_gte16) == array_size(eaw_lte16));static_assert(array_size(zero_gte32) == array_size(zero_lte32));static_assert(array_size(zero_gte16) == array_size(zero_lte16));static_assert(array_size(nsm_gte32) == array_size(nsm_lte32));static_assert(array_size(nsm_gte16) == array_size(nsm_lte16));
/// Handles 16-bit codepoints.template <class D, typename T = uint16_t>int8_t CodepointWidth16(D d, uint16_t input) { GHOSTTY_SIMD_ASSERT(input > 0xFF); GHOSTTY_SIMD_ASSERT(input <= 0xFFFF);
const size_t N = hn::Lanes(d); const hn::Vec<D> input_vec = Set(d, input);
{ // NOTE: 0x2E3B is technically width 3 but for our terminal we only // handle up to width 2 as wide so we will treat it as width 2. HWY_ALIGN constexpr T gte_keys[] = { 0x2E3A, 0x3400, 0x4E00, 0xF900, 0x2E3B, 0x1160, 0x2060, 0xFFF0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; HWY_ALIGN constexpr T lte_keys[] = { 0x2E3A, 0x4DBF, 0x9FFF, 0xFAFF, 0x2E3B, 0x11FF, 0x206F, 0xFFF8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; static_assert(array_size(gte_keys) == array_size(lte_keys)); static_assert(array_size(gte_keys) >= 32); size_t i = 0; for (; i + N <= array_size(lte_keys) && lte_keys[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, lte_keys + i); const hn::Vec<D> gte_vec = hn::Load(d, gte_keys + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec)));
// We organize the data above to split 0 and 2-width codepoints since // we can probably do all the comparisons in one go. if (idx >= 5) { return 0; } else if (idx >= 0) { return 2; } } GHOSTTY_SIMD_ASSERT(i >= 7); // We should have checked all the ranges. }
{ constexpr T zero_gte_min = array_min(zero_gte16); constexpr T zero_lte_max = array_max(zero_lte16); if (input >= zero_gte_min && input <= zero_lte_max) { size_t i = 0; for (; i + N <= array_size(zero_gte16) && zero_gte16[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, zero_lte16 + i); const hn::Vec<D> gte_vec = hn::Load(d, zero_gte16 + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 0; } } } }
{ constexpr T eaw_gte_min = array_min(eaw_gte16); constexpr T eaw_lte_max = array_max(eaw_lte16); if (input >= eaw_gte_min && input <= eaw_lte_max) { size_t i = 0; for (; i + N <= array_size(eaw_lte16) && eaw_lte16[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, eaw_lte16 + i); const hn::Vec<D> gte_vec = hn::Load(d, eaw_gte16 + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 2; } } } }
{ constexpr T nsm_gte_min = array_min(nsm_gte16); constexpr T nsm_lte_max = array_max(nsm_lte16); if (input >= nsm_gte_min && input <= nsm_lte_max) { size_t i = 0; for (; i + N <= array_size(nsm_lte16) && nsm_lte16[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, nsm_lte16 + i); const hn::Vec<D> gte_vec = hn::Load(d, nsm_gte16 + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 0; } } } }
return 1;}
/// Handles codepoints larger than 16-bit.template <class D, typename T = uint32_t>int8_t CodepointWidth32(D d, T input) { GHOSTTY_SIMD_ASSERT(input > 0xFFFF);
const size_t N = hn::Lanes(d); const hn::Vec<D> input_vec = Set(d, input);
{ // NOTE: 0x2E3B is technically width 3 but for our terminal we only // handle up to width 2 as wide so we will treat it as width 2. HWY_ALIGN constexpr T gte_keys[] = { 0x1f1e6, 0x20000, 0x30000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; HWY_ALIGN constexpr T lte_keys[] = { 0x1f1ff, 0x2FFFD, 0x3FFFD, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; static_assert(array_size(gte_keys) == array_size(lte_keys)); static_assert(array_size(gte_keys) >= 16); size_t i = 0; for (; i + N <= array_size(lte_keys) && lte_keys[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, lte_keys + i); const hn::Vec<D> gte_vec = hn::Load(d, gte_keys + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 2; } } GHOSTTY_SIMD_ASSERT(i >= 2); // We should have checked all the ranges. }
{ HWY_ALIGN constexpr T gte_keys[] = { 0xE0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; HWY_ALIGN constexpr T lte_keys[] = { 0xE0FFF, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; static_assert(array_size(gte_keys) == array_size(lte_keys)); static_assert(array_size(gte_keys) >= 16); size_t i = 0; for (; i + N <= array_size(lte_keys) && lte_keys[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, lte_keys + i); const hn::Vec<D> gte_vec = hn::Load(d, gte_keys + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 0; } } }
{ constexpr T zero_gte_min = array_min(zero_gte32); constexpr T zero_lte_max = array_max(zero_lte32); if (input >= zero_gte_min && input <= zero_lte_max) { size_t i = 0; for (; i + N <= array_size(zero_gte32) && zero_gte32[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, zero_lte32 + i); const hn::Vec<D> gte_vec = hn::Load(d, zero_gte32 + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 0; } } } }
{ constexpr T eaw_gte_min = array_min(eaw_gte32); constexpr T eaw_lte_max = array_max(eaw_lte32); if (input >= eaw_gte_min && input <= eaw_lte_max) { size_t i = 0; for (; i + N <= array_size(eaw_lte32) && eaw_lte32[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, eaw_lte32 + i); const hn::Vec<D> gte_vec = hn::Load(d, eaw_gte32 + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 2; } } } }
{ constexpr T nsm_gte_min = array_min(nsm_gte32); constexpr T nsm_lte_max = array_max(nsm_lte32); if (input >= nsm_gte_min && input <= nsm_lte_max) { size_t i = 0; for (; i + N <= array_size(nsm_lte32) && nsm_lte32[i] != 0; i += N) { const hn::Vec<D> lte_vec = hn::Load(d, nsm_lte32 + i); const hn::Vec<D> gte_vec = hn::Load(d, nsm_gte32 + i); const intptr_t idx = hn::FindFirstTrue( d, hn::And(hn::Le(input_vec, lte_vec), hn::Ge(input_vec, gte_vec))); if (idx >= 0) { return 0; } } } }
return 1;}
/// Vectorized implementation of Unicode display width. Determining width/// unfortunately requires many small range checks, so we test some fast paths/// and otherwise try to do N (vector lane width) range checks at a time.int8_t CodepointWidth(uint32_t input) { // If the input is ASCII, then we return 1. We do NOT check for // control characters because we assume that the input has already // been checked for that case. if (input <= 0xFF) { return 1; }
// We handle 16-bit codepoints separately because they are more common // and we can fit double the number of lanes in a vector. if (input <= 0xFFFF) { hn::ScalableTag<uint16_t> d; return CodepointWidth16(d, input); }
hn::ScalableTag<uint32_t> d; return CodepointWidth32(d, input);}
} // namespace HWY_NAMESPACE} // namespace ghosttyHWY_AFTER_NAMESPACE();
// HWY_ONCE is true for only one of the target passes#if HWY_ONCE
namespace ghostty {
HWY_EXPORT(CodepointWidth);
int8_t CodepointWidth(uint32_t cp) { return HWY_DYNAMIC_DISPATCH(CodepointWidth)(cp);}
} // namespace ghostty
extern "C" {
int8_t ghostty_simd_codepoint_width(uint32_t cp) { return ghostty::CodepointWidth(cp);}
} // extern "C"
#endif // HWY_ONCE