//# This file is a part of toml++ and is subject to the the terms of the MIT license.
//# Copyright (c) Mark Gillard <mark.gillard@outlook.com.au>
//# See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
// SPDX-License-Identifier: MIT

#pragma once
#include "toml_preprocessor.h"

TOML_PUSH_WARNINGS;
TOML_DISABLE_SWITCH_WARNINGS;

/// \cond
TOML_IMPL_NAMESPACE_START
{
	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_ascii_whitespace(char32_t codepoint) noexcept
	{
		return codepoint == U'\t' || codepoint == U' ';
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_non_ascii_whitespace(char32_t codepoint) noexcept
	{
		// see: https://en.wikipedia.org/wiki/Whitespace_character#Unicode
		// (characters that don't say "is a line-break")

		return codepoint == U'\u00A0' // no-break space
			|| codepoint == U'\u1680' // ogham space mark
			|| (codepoint >= U'\u2000' && codepoint <= U'\u200A') // em quad -> hair space
			|| codepoint == U'\u202F' // narrow no-break space
			|| codepoint == U'\u205F' // medium mathematical space
			|| codepoint == U'\u3000' // ideographic space
		;
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_whitespace(char32_t codepoint) noexcept
	{
		return is_ascii_whitespace(codepoint) || is_non_ascii_whitespace(codepoint);
	}

	template <bool IncludeCarriageReturn = true>
	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_ascii_line_break(char32_t codepoint) noexcept
	{
		constexpr auto low_range_end = IncludeCarriageReturn ? U'\r' : U'\f';
		return (codepoint >= U'\n' && codepoint <= low_range_end);
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_non_ascii_line_break(char32_t codepoint) noexcept
	{
		// see https://en.wikipedia.org/wiki/Whitespace_character#Unicode
		// (characters that say "is a line-break")

		return codepoint == U'\u0085' // next line
			|| codepoint == U'\u2028' // line separator
			|| codepoint == U'\u2029' // paragraph separator
		;
	}

	template <bool IncludeCarriageReturn = true>
	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_line_break(char32_t codepoint) noexcept
	{
		return is_ascii_line_break<IncludeCarriageReturn>(codepoint) || is_non_ascii_line_break(codepoint);
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_string_delimiter(char32_t codepoint) noexcept
	{
		return codepoint == U'"' || codepoint == U'\'';
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_ascii_letter(char32_t codepoint) noexcept
	{
		return (codepoint >= U'a' && codepoint <= U'z')
			|| (codepoint >= U'A' && codepoint <= U'Z');
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_binary_digit(char32_t codepoint) noexcept
	{
		return codepoint == U'0' || codepoint == U'1';
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_octal_digit(char32_t codepoint) noexcept
	{
		return (codepoint >= U'0' && codepoint <= U'7');
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_decimal_digit(char32_t codepoint) noexcept
	{
		return (codepoint >= U'0' && codepoint <= U'9');
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_hexadecimal_digit(char32_t c) noexcept
	{
		return U'0' <= c && c <= U'f' && (1ull << (static_cast<uint_least64_t>(c) - 0x30u)) & 0x7E0000007E03FFull;
	}

	template <typename T>
	[[nodiscard]]
	TOML_ATTR(const)
	constexpr std::uint_least32_t hex_to_dec(const T codepoint) noexcept
	{
		if constexpr (std::is_same_v<remove_cvref_t<T>, std::uint_least32_t>)
			return codepoint >= 0x41u // >= 'A'
				? 10u + (codepoint | 0x20u) - 0x61u // - 'a'
				: codepoint - 0x30u // - '0'
			;
		else
			return hex_to_dec(static_cast<std::uint_least32_t>(codepoint));
	}

	#if TOML_LANG_UNRELEASED // toml/issues/687 (unicode bare keys)

	//# Returns true if a codepoint belongs to any of these categories:
	//# 	Ll, Lm, Lo, Lt, Lu
	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_non_ascii_letter(char32_t c) noexcept
	{
		if (U'\xAA' > c || c > U'\U0003134A')
			return false;

		const auto child_index_0 = (static_cast<uint_least64_t>(c) - 0xAAull) / 0xC4Bull;
		if ((1ull << child_index_0) & 0x26180C0000ull)
			return false;
		if ((1ull << child_index_0) & 0x8A7FFC004001CFA0ull)
			return true;
		switch (child_index_0)
		{
			case 0x00: // [0] 00AA - 0CF4
			{
				if (c > U'\u0CF2')
					return false;
				TOML_ASSUME(U'\xAA' <= c);

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFDFFFFFC10801u,	0xFFFFFFFFFFFFDFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0x07C000FFF0FFFFFFu,	0x0000000000000014u,	0x0000000000000000u,	0xFEFFFFF5D02F37C0u,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFEFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFF00FFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFC09FFFFFFFFFBFu,	0x000000007FFFFFFFu,
					0xFFFFFFC000000000u,	0xFFC00000000001E1u,	0x00000001FFFFFFFFu,	0xFFFFFFFFFFFFFFB0u,
					0x18000BFFFFFFFFFFu,	0xFFFFFF4000270030u,	0xFFFFFFF80000003Fu,	0x0FFFFFFFFFFFFFFFu,
					0xFFFFFFFF00000080u,	0x44010FFFFFC10C01u,	0xFFC07FFFFFC00000u,	0xFFC0000000000001u,
					0x000000003FFFF7FFu,	0xFFFFFFFFFC000000u,	0x00FFC0400008FFFFu,	0x7FFFFE67F87FFF80u,
					0x00EC00100008F17Fu,	0x7FFFFE61F80400C0u,	0x001780000000DB7Fu,	0x7FFFFEEFF8000700u,
					0x00C000400008FB7Fu,	0x7FFFFE67F8008000u,	0x00EC00000008FB7Fu,	0xC6358F71FA000080u,
					0x000000400000FFF1u,	0x7FFFFF77F8000000u,	0x00C1C0000008FFFFu,	0x7FFFFF77F8400000u,
					0x00D000000008FBFFu,	0x0000000000000180u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xAAull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0xAAull) % 0x40ull));
				// 1922 code units from 124 ranges (spanning a search area of 3145)
			}
			case 0x01: // [1] 0CF5 - 193F
			{
				if (U'\u0D04' > c || c > U'\u191E')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x027FFFFFFFFFDDFFu,	0x0FC0000038070400u,	0xF2FFBFFFFFC7FFFEu,	0xE000000000000007u,
					0xF000DFFFFFFFFFFFu,	0x6000000000000007u,	0xF200DFFAFFFFFF7Du,	0x100000000F000005u,
					0xF000000000000000u,	0x000001FFFFFFFFEFu,	0x00000000000001F0u,	0xF000000000000000u,
					0x0800007FFFFFFFFFu,	0x3FFE1C0623C3F000u,	0xFFFFFFFFF0000400u,	0xFF7FFFFFFFFFF20Bu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFF3D7F3DFu,	0xD7F3DFFFFFFFF3DFu,	0xFFFFFFFFFFF7FFF3u,
					0xFFFFFFFFFFF3DFFFu,	0xF0000000007FFFFFu,	0xFFFFFFFFF0000FFFu,	0xE3F3FFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xEFFFF9FFFFFFFFFFu,	0xFFFFFFFFF07FFFFFu,	0xF01FE07FFFFFFFFFu,
					0xF0003FFFF0003DFFu,	0xF0001DFFF0003FFFu,	0x0000FFFFFFFFFFFFu,	0x0000000001080000u,
					0xFFFFFFFFF0000000u,	0xF01FFFFFFFFFFFFFu,	0xFFFFF05FFFFFFFF9u,	0xF003FFFFFFFFFFFFu,
					0x0000000007FFFFFFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xD04ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0xD04ull) % 0x40ull));
				// 2239 code units from 83 ranges (spanning a search area of 3099)
			}
			case 0x02: // [2] 1940 - 258A
			{
				if (U'\u1950' > c || c > U'\u2184')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFF001F3FFFFFFFu,	0x03FFFFFF0FFFFFFFu,	0xFFFF000000000000u,	0xFFFFFFFFFFFF007Fu,
					0x000000000000001Fu,	0x0000000000800000u,	0xFFE0000000000000u,	0x0FE0000FFFFFFFFFu,
					0xFFF8000000000000u,	0xFFFFFC00C001FFFFu,	0xFFFF0000003FFFFFu,	0xE0000000000FFFFFu,
					0x01FF3FFFFFFFFC00u,	0x0000E7FFFFFFFFFFu,	0xFFFF046FDE000000u,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0x0000FFFFFFFFFFFFu,	0xFFFF000000000000u,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0x3F3FFFFFFFFF3F3Fu,
					0xFFFF3FFFFFFFAAFFu,	0x1FDC5FDFFFFFFFFFu,	0x00001FDC1FFF0FCFu,	0x0000000000000000u,
					0x0000800200000000u,	0x0000000000001FFFu,	0xFC84000000000000u,	0x43E0F3FFBD503E2Fu,
					0x0018000000000000u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x1950ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x1950ull) % 0x40ull));
				// 1184 code units from 59 ranges (spanning a search area of 2101)
			}
			case 0x03: // [3] 258B - 31D5
			{
				if (U'\u2C00' > c || c > U'\u31BF')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFF7FFFFFFFFFFFu,	0xFFFFFFFF7FFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0x000C781FFFFFFFFFu,
					0xFFFF20BFFFFFFFFFu,	0x000080FFFFFFFFFFu,	0x7F7F7F7F007FFFFFu,	0x000000007F7F7F7Fu,
					0x0000800000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x183E000000000060u,	0xFFFFFFFFFFFFFFFEu,	0xFFFFFFFEE07FFFFFu,	0xF7FFFFFFFFFFFFFFu,
					0xFFFEFFFFFFFFFFE0u,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFF00007FFFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x2C00ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 771 code units from 30 ranges (spanning a search area of 1472)
			}
			case 0x04: return (U'\u31F0' <= c && c <= U'\u31FF') || U'\u3400' <= c;
			case 0x06: return c <= U'\u4DBF' || U'\u4E00' <= c;
			case 0x0C: return c <= U'\u9FFC' || U'\uA000' <= c;
			case 0x0D: // [13] A079 - ACC3
			{
				TOML_ASSUME(U'\uA079' <= c && c <= U'\uACC3');

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0x00000000000FFFFFu,	0xFFFFFFFFFF800000u,	0xFFFFFFFFFFFFFF9Fu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0x0006007FFF8FFFFFu,	0x003FFFFFFFFFFF80u,
					0xFFFFFF9FFFFFFFC0u,	0x00001FFFFFFFFFFFu,	0xFFFFFE7FC0000000u,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFCFFFFu,	0xF00000000003FE7Fu,	0x000003FFFFFBDDFFu,	0x07FFFFFFFFFFFF80u,
					0x07FFFFFFFFFFFE00u,	0x7E00000000000000u,	0xFF801FFFFFFE0034u,	0xFFFFFF8000003FFFu,
					0x03FFFFFFFFFFF80Fu,	0x007FEF8000400000u,	0x0000FFFFFFFFFFBEu,	0x3FFFFF800007FB80u,
					0x317FFFFFFFFFFFE2u,	0x0E03FF9C0000029Fu,	0xFFBFBF803F3F3F00u,	0xFF81FFFBFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0x000003FFFFFFFFFFu,	0xFFFFFFFFFFFFFF80u,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0x00000000000007FFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xA079ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0xA079ull) % 0x40ull));
				// 2554 code units from 52 ranges (spanning a search area of 3147)
			}
			case 0x11: return c <= U'\uD7A3' || (U'\uD7B0' <= c && c <= U'\uD7C6') || (U'\uD7CB' <= c && c <= U'\uD7FB');
			case 0x14: // [20] F686 - 102D0
			{
				if (U'\uF900' > c)
					return false;
				TOML_ASSUME(c <= U'\U000102D0');

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFF3FFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0x0000000003FFFFFFu,
					0x5F7FFDFFA0F8007Fu,	0xFFFFFFFFFFFFFFDBu,	0x0003FFFFFFFFFFFFu,	0xFFFFFFFFFFF80000u,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0x3FFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFF0000u,	0xFFFFFFFFFFFCFFFFu,	0x0FFF0000000000FFu,
					0x0000000000000000u,	0xFFDF000000000000u,	0xFFFFFFFFFFFFFFFFu,	0x1FFFFFFFFFFFFFFFu,
					0x07FFFFFE00000000u,	0xFFFFFFC007FFFFFEu,	0x7FFFFFFFFFFFFFFFu,	0x000000001CFCFCFCu,
					0xB7FFFF7FFFFFEFFFu,	0x000000003FFF3FFFu,	0xFFFFFFFFFFFFFFFFu,	0x07FFFFFFFFFFFFFFu,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0xFFFFFFFF1FFFFFFFu,	0x000000000001FFFFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xF900ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 1710 code units from 34 ranges (spanning a search area of 2513)
			}
			case 0x15: // [21] 102D1 - 10F1B
			{
				if (U'\U00010300' > c)
					return false;
				TOML_ASSUME(c <= U'\U00010F1B');

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFE000FFFFFFFFu,	0x003FFFFFFFFF03FDu,	0xFFFFFFFF3FFFFFFFu,	0x000000000000FF0Fu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFF00003FFFFFFFu,	0x0FFFFFFFFF0FFFFFu,
					0xFFFF00FFFFFFFFFFu,	0x0000000FFFFFFFFFu,	0x0000000000000000u,	0x0000000000000000u,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0x007FFFFFFFFFFFFFu,	0x000000FF003FFFFFu,	0x0000000000000000u,	0x0000000000000000u,
					0x91BFFFFFFFFFFD3Fu,	0x007FFFFF003FFFFFu,	0x000000007FFFFFFFu,	0x0037FFFF00000000u,
					0x03FFFFFF003FFFFFu,	0x0000000000000000u,	0xC0FFFFFFFFFFFFFFu,	0x0000000000000000u,
					0x003FFFFFFEEF0001u,	0x1FFFFFFF00000000u,	0x000000001FFFFFFFu,	0x0000001FFFFFFEFFu,
					0x003FFFFFFFFFFFFFu,	0x0007FFFF003FFFFFu,	0x000000000003FFFFu,	0x0000000000000000u,
					0xFFFFFFFFFFFFFFFFu,	0x00000000000001FFu,	0x0007FFFFFFFFFFFFu,	0x0007FFFFFFFFFFFFu,
					0x0000000FFFFFFFFFu,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x000303FFFFFFFFFFu,	0x0000000000000000u,
					0x000000000FFFFFFFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x10300ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 1620 code units from 48 ranges (spanning a search area of 3100)
			}
			case 0x16: // [22] 10F1C - 11B66
			{
				if (c > U'\U00011AF8')
					return false;
				TOML_ASSUME(U'\U00010F1C' <= c);

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x000003FFFFF00801u,	0x0000000000000000u,	0x000001FFFFF00000u,	0xFFFFFF8007FFFFF0u,
					0x000000000FFFFFFFu,	0xFFFFFF8000000000u,	0xFFF00000000FFFFFu,	0xFFFFFF8000001FFFu,
					0xFFF00900000007FFu,	0xFFFFFF80047FFFFFu,	0x400001E0007FFFFFu,	0xFFBFFFF000000001u,
					0x000000000000FFFFu,	0xFFFBD7F000000000u,	0xFFFFFFFFFFF01FFBu,	0xFF99FE0000000007u,
					0x001000023EDFDFFFu,	0x000000000000003Eu,	0x0000000000000000u,	0xFFFFFFF000000000u,
					0x0000780001FFFFFFu,	0xFFFFFFF000000038u,	0x00000B00000FFFFFu,	0x0000000000000000u,
					0x0000000000000000u,	0xFFFFFFF000000000u,	0xF00000000007FFFFu,	0xFFFFFFF000000000u,
					0x00000100000FFFFFu,	0xFFFFFFF000000000u,	0x0000000010007FFFu,	0x7FFFFFF000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0xFFFFFFF000000000u,
					0x000000000000FFFFu,	0x0000000000000000u,	0xFFFFFFFFFFFFFFF0u,	0xF6FF27F80000000Fu,
					0x00000028000FFFFFu,	0x0000000000000000u,	0x001FFFFFFFFFCFF0u,	0xFFFF8010000000A0u,
					0x00100000407FFFFFu,	0x00003FFFFFFFFFFFu,	0xFFFFFFF000000002u,	0x000000001FFFFFFFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x10F1Cull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x10F1Cull) % 0x40ull));
				// 1130 code units from 67 ranges (spanning a search area of 3037)
			}
			case 0x17: // [23] 11B67 - 127B1
			{
				if (U'\U00011C00' > c || c > U'\U00012543')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x00007FFFFFFFFDFFu,	0xFFFC000000000001u,	0x000000000000FFFFu,	0x0000000000000000u,
					0x0001FFFFFFFFFB7Fu,	0xFFFFFDBF00000040u,	0x00000000010003FFu,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0007FFFF00000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0001000000000000u,	0x0000000000000000u,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0x0000000003FFFFFFu,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0x000000000000000Fu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x11C00ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 1304 code units from 16 ranges (spanning a search area of 2372)
			}
			case 0x18: return U'\U00013000' <= c;
			case 0x19: return c <= U'\U0001342E';
			case 0x1A: return U'\U00014400' <= c && c <= U'\U00014646';
			case 0x1D: // [29] 16529 - 17173
			{
				if (U'\U00016800' > c)
					return false;
				TOML_ASSUME(c <= U'\U00017173');

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0x01FFFFFFFFFFFFFFu,	0x000000007FFFFFFFu,	0x0000000000000000u,	0x00003FFFFFFF0000u,
					0x0000FFFFFFFFFFFFu,	0xE0FFFFF80000000Fu,	0x000000000000FFFFu,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0xFFFFFFFFFFFFFFFFu,	0x0000000000000000u,	0x0000000000000000u,
					0xFFFFFFFFFFFFFFFFu,	0x00000000000107FFu,	0x00000000FFF80000u,	0x0000000B00000000u,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0x000FFFFFFFFFFFFFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x16800ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 1250 code units from 14 ranges (spanning a search area of 2420)
			}
			case 0x1F: return c <= U'\U000187F7' || U'\U00018800' <= c;
			case 0x20: return c <= U'\U00018CD5' || (U'\U00018D00' <= c && c <= U'\U00018D08');
			case 0x23: // [35] 1AEEB - 1BB35
			{
				if (U'\U0001B000' > c || c > U'\U0001B2FB')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0x000000007FFFFFFFu,	0xFFFF00F000070000u,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0x0FFFFFFFFFFFFFFFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x1B000ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 690 code units from 4 ranges (spanning a search area of 764)
			}
			case 0x24: // [36] 1BB36 - 1C780
			{
				if (U'\U0001BC00' > c || c > U'\U0001BC99')
					return false;

				switch ((static_cast<uint_least64_t>(c) - 0x1BC00ull) / 0x40ull)
				{
					case 0x01: return c <= U'\U0001BC7C' && (1ull << (static_cast<uint_least64_t>(c) - 0x1BC40u)) & 0x1FFF07FFFFFFFFFFull;
					case 0x02: return (1u << (static_cast<uint_least32_t>(c) - 0x1BC80u)) & 0x3FF01FFu;
					default: return true;
				}
				// 139 code units from 4 ranges (spanning a search area of 154)
				TOML_UNREACHABLE;
			}
			case 0x26: // [38] 1D3CC - 1E016
			{
				if (U'\U0001D400' > c || c > U'\U0001D7CB')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFDFFFFFu,	0xEBFFDE64DFFFFFFFu,	0xFFFFFFFFFFFFFFEFu,
					0x7BFFFFFFDFDFE7BFu,	0xFFFFFFFFFFFDFC5Fu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFF3FFFFFFFFFu,	0xF7FFFFFFF7FFFFFDu,
					0xFFDFFFFFFFDFFFFFu,	0xFFFF7FFFFFFF7FFFu,	0xFFFFFDFFFFFFFDFFu,	0x0000000000000FF7u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x1D400ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 936 code units from 30 ranges (spanning a search area of 972)
			}
			case 0x27: // [39] 1E017 - 1EC61
			{
				if (U'\U0001E100' > c || c > U'\U0001E94B')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x3F801FFFFFFFFFFFu,	0x0000000000004000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x00000FFFFFFFFFFFu,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0xFFFFFFFFFFFFFFFFu,	0x000000000000001Fu,
					0xFFFFFFFFFFFFFFFFu,	0x000000000000080Fu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x1E100ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 363 code units from 7 ranges (spanning a search area of 2124)
			}
			case 0x28: // [40] 1EC62 - 1F8AC
			{
				if (U'\U0001EE00' > c || c > U'\U0001EEBB')
					return false;

				switch ((static_cast<uint_least64_t>(c) - 0x1EE00ull) / 0x40ull)
				{
					case 0x00: return c <= U'\U0001EE3B' && (1ull << (static_cast<uint_least64_t>(c) - 0x1EE00u)) & 0xAF7FE96FFFFFFEFull;
					case 0x01: return U'\U0001EE42' <= c && c <= U'\U0001EE7E'
						&& (1ull << (static_cast<uint_least64_t>(c) - 0x1EE42u)) & 0x17BDFDE5AAA5BAA1ull;
					case 0x02: return (1ull << (static_cast<uint_least64_t>(c) - 0x1EE80u)) & 0xFFFFBEE0FFFFBFFull;
					TOML_NO_DEFAULT_CASE;
				}
				// 141 code units from 33 ranges (spanning a search area of 188)
				TOML_UNREACHABLE;
			}
			case 0x29: return U'\U00020000' <= c;
			case 0x37: return c <= U'\U0002A6DD' || U'\U0002A700' <= c;
			case 0x38: return c <= U'\U0002B734' || (U'\U0002B740' <= c && c <= U'\U0002B81D') || U'\U0002B820' <= c;
			case 0x3A: return c <= U'\U0002CEA1' || U'\U0002CEB0' <= c;
			case 0x3C: return c <= U'\U0002EBE0';
			case 0x3D: return U'\U0002F800' <= c && c <= U'\U0002FA1D';
			case 0x3E: return U'\U00030000' <= c;
			TOML_NO_DEFAULT_CASE;
		}
		// 131189 code units from 620 ranges (spanning a search area of 201377)
		TOML_UNREACHABLE;
	}

	//# Returns true if a codepoint belongs to any of these categories:
	//# 	Nd, Nl
	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_non_ascii_number(char32_t c) noexcept
	{
		if (U'\u0660' > c || c > U'\U0001FBF9')
			return false;

		const auto child_index_0 = (static_cast<uint_least64_t>(c) - 0x660ull) / 0x7D7ull;
		if ((1ull << child_index_0) & 0x47FFDFE07FCFFFD0ull)
			return false;
		switch (child_index_0)
		{
			case 0x00: // [0] 0660 - 0E36
			{
				if (c > U'\u0DEF')
					return false;
				TOML_ASSUME(U'\u0660' <= c);

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x00000000000003FFu,	0x0000000000000000u,	0x0000000003FF0000u,	0x0000000000000000u,
					0x0000000000000000u,	0x000003FF00000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x000000000000FFC0u,	0x0000000000000000u,	0x000000000000FFC0u,	0x0000000000000000u,
					0x000000000000FFC0u,	0x0000000000000000u,	0x000000000000FFC0u,	0x0000000000000000u,
					0x000000000000FFC0u,	0x0000000000000000u,	0x000000000000FFC0u,	0x0000000000000000u,
					0x000000000000FFC0u,	0x0000000000000000u,	0x000000000000FFC0u,	0x0000000000000000u,
					0x000000000000FFC0u,	0x0000000000000000u,	0x000000000000FFC0u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x660ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x660ull) % 0x40ull));
				// 130 code units from 13 ranges (spanning a search area of 1936)
			}
			case 0x01: // [1] 0E37 - 160D
			{
				if (U'\u0E50' > c || c > U'\u1099')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x00000000000003FFu,	0x0000000000000000u,	0x00000000000003FFu,	0x0000000003FF0000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x03FF000000000000u,
					0x0000000000000000u,	0x00000000000003FFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xE50ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0xE50ull) % 0x40ull));
				// 50 code units from 5 ranges (spanning a search area of 586)
			}
			case 0x02: // [2] 160E - 1DE4
			{
				if (U'\u16EE' > c || c > U'\u1C59')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x0000000000000007u,	0x0000000000000000u,	0x0000000000000000u,	0x0FFC000000000000u,
					0x00000FFC00000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x00000003FF000000u,	0x0000000000000000u,	0x00000FFC00000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x00000FFC0FFC0000u,	0x0000000000000000u,
					0x0000000000000000u,	0x00000FFC00000000u,	0x0000000000000000u,	0x0000000000000FFCu,
					0x0000000000000000u,	0x00000FFC0FFC0000u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x16EEull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x16EEull) % 0x40ull));
				// 103 code units from 11 ranges (spanning a search area of 1388)
			}
			case 0x03: return U'\u2160' <= c && c <= U'\u2188' && (1ull << (static_cast<uint_least64_t>(c) - 0x2160u)) & 0x1E7FFFFFFFFull;
			case 0x05: return U'\u3007' <= c && c <= U'\u303A' && (1ull << (static_cast<uint_least64_t>(c) - 0x3007u)) & 0xE0007FC000001ull;
			case 0x14: // [20] A32C - AB02
			{
				if (U'\uA620' > c || c > U'\uAA59')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x00000000000003FFu,	0x0000000000000000u,	0x0000000000000000u,	0x000000000000FFC0u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x03FF000000000000u,	0x000003FF00000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x03FF000000000000u,	0x0000000003FF0000u,
					0x03FF000000000000u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xA620ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0xA620ull) % 0x40ull));
				// 70 code units from 7 ranges (spanning a search area of 1082)
			}
			case 0x15: return U'\uABF0' <= c && c <= U'\uABF9';
			case 0x1F: return U'\uFF10' <= c && c <= U'\uFF19';
			case 0x20: // [32] 10140 - 10916
			{
				if (c > U'\U000104A9')
					return false;
				TOML_ASSUME(U'\U00010140' <= c);

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x001FFFFFFFFFFFFFu,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000402u,	0x0000000000000000u,	0x00000000003E0000u,	0x0000000000000000u,
					0x0000000000000000u,	0x000003FF00000000u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x10140ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 70 code units from 5 ranges (spanning a search area of 874)
			}
			case 0x21: return (U'\U00010D30' <= c && c <= U'\U00010D39') || (U'\U00011066' <= c && c <= U'\U0001106F');
			case 0x22: // [34] 110EE - 118C4
			{
				if (U'\U000110F0' > c || c > U'\U00011739')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x00000000000003FFu,	0x000000000000FFC0u,	0x0000000000000000u,	0x000003FF00000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x00000000000003FFu,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x000003FF00000000u,	0x0000000000000000u,	0x000003FF00000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x000003FF00000000u,	0x0000000000000000u,	0x0000000003FF0000u,
					0x0000000000000000u,	0x00000000000003FFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x110F0ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x110F0ull) % 0x40ull));
				// 90 code units from 9 ranges (spanning a search area of 1610)
			}
			case 0x23: // [35] 118C5 - 1209B
			{
				if (U'\U000118E0' > c || c > U'\U00011DA9')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x00000000000003FFu,	0x03FF000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x03FF000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x03FF000000000000u,	0x0000000000000000u,	0x00000000000003FFu,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x118E0ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x118E0ull) % 0x40ull));
				// 50 code units from 5 ranges (spanning a search area of 1226)
			}
			case 0x24: return U'\U00012400' <= c && c <= U'\U0001246E';
			case 0x2D: return (U'\U00016A60' <= c && c <= U'\U00016A69') || (U'\U00016B50' <= c && c <= U'\U00016B59');
			case 0x3B: return U'\U0001D7CE' <= c && c <= U'\U0001D7FF';
			case 0x3C: return (U'\U0001E140' <= c && c <= U'\U0001E149') || (U'\U0001E2F0' <= c && c <= U'\U0001E2F9');
			case 0x3D: return U'\U0001E950' <= c && c <= U'\U0001E959';
			case 0x3F: return U'\U0001FBF0' <= c;
			TOML_NO_DEFAULT_CASE;
		}
		// 876 code units from 72 ranges (spanning a search area of 128410)
		TOML_UNREACHABLE;
	}

	//# Returns true if a codepoint belongs to any of these categories:
	//# 	Mn, Mc
	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_combining_mark(char32_t c) noexcept
	{
		if (U'\u0300' > c || c > U'\U000E01EF')
			return false;

		const auto child_index_0 = (static_cast<uint_least64_t>(c) - 0x300ull) / 0x37FCull;
		if ((1ull << child_index_0) & 0x7FFFFFFFFFFFFE02ull)
			return false;
		switch (child_index_0)
		{
			case 0x00: // [0] 0300 - 3AFB
			{
				if (c > U'\u309A')
					return false;
				TOML_ASSUME(U'\u0300' <= c);

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0xFFFFFFFFFFFFFFFFu,	0x0000FFFFFFFFFFFFu,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x00000000000000F8u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0xBFFFFFFFFFFE0000u,	0x00000000000000B6u,
					0x0000000007FF0000u,	0x00010000FFFFF800u,	0x0000000000000000u,	0x00003D9F9FC00000u,
					0xFFFF000000020000u,	0x00000000000007FFu,	0x0001FFC000000000u,	0x200FF80000000000u,
					0x00003EEFFBC00000u,	0x000000000E000000u,	0x0000000000000000u,	0xFFFFFFFBFFF80000u,
					0xDC0000000000000Fu,	0x0000000C00FEFFFFu,	0xD00000000000000Eu,	0x4000000C0080399Fu,
					0xD00000000000000Eu,	0x0023000000023987u,	0xD00000000000000Eu,	0xFC00000C00003BBFu,
					0xD00000000000000Eu,	0x0000000C00E0399Fu,	0xC000000000000004u,	0x0000000000803DC7u,
					0xC00000000000001Fu,	0x0000000C00603DDFu,	0xD00000000000000Eu,	0x0000000C00603DDFu,
					0xD80000000000000Fu,	0x0000000C00803DDFu,	0x000000000000000Eu,	0x000C0000FF5F8400u,
					0x07F2000000000000u,	0x0000000000007F80u,	0x1FF2000000000000u,	0x0000000000003F00u,
					0xC2A0000003000000u,	0xFFFE000000000000u,	0x1FFFFFFFFEFFE0DFu,	0x0000000000000040u,
					0x7FFFF80000000000u,	0x001E3F9DC3C00000u,	0x000000003C00BFFCu,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x00000000E0000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x001C0000001C0000u,	0x000C0000000C0000u,	0xFFF0000000000000u,	0x00000000200FFFFFu,
					0x0000000000003800u,	0x0000000000000000u,	0x0000020000000060u,	0x0000000000000000u,
					0x0FFF0FFF00000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x000000000F800000u,	0x9FFFFFFF7FE00000u,	0xBFFF000000000000u,	0x0000000000000001u,
					0xFFF000000000001Fu,	0x000FF8000000001Fu,	0x00003FFE00000007u,	0x000FFFC000000000u,
					0x00FFFFF000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x039021FFFFF70000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0xFBFFFFFFFFFFFFFFu,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0001FFE21FFF0000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0003800000000000u,
					0x0000000000000000u,	0x8000000000000000u,	0x0000000000000000u,	0xFFFFFFFF00000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000FC0000000000u,	0x0000000000000000u,	0x0000000006000000u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x300ull) / 0x40ull]
					& (0x1ull << (static_cast<uint_least64_t>(c) % 0x40ull));
				// 1106 code units from 156 ranges (spanning a search area of 11675)
			}
			case 0x02: // [2] 72F8 - AAF3
			{
				if (U'\uA66F' > c || c > U'\uAAEF')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x0001800000007FE1u,	0x0000000000000000u,	0x0000000000000006u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x21F0000010880000u,	0x0000000000000000u,
					0x0000000000060000u,	0xFFFE0000007FFFE0u,	0x7F80000000010007u,	0x0000001FFF000000u,
					0x00000000001E0000u,	0x004000000003FFF0u,	0xFC00000000000000u,	0x00000000601000FFu,
					0x0000000000007000u,	0xF00000000005833Au,	0x0000000000000001u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xA66Full) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0xA66Full) % 0x40ull));
				// 137 code units from 28 ranges (spanning a search area of 1153)
			}
			case 0x03: return (U'\uAAF5' <= c && c <= U'\uAAF6') || (U'\uABE3' <= c && c <= U'\uABEA') || (U'\uABEC' <= c && c <= U'\uABED');
			case 0x04: // [4] E2F0 - 11AEB
			{
				if (U'\uFB1E' > c || c > U'\U00011A99')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x0000000000000001u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0003FFFC00000000u,
					0x000000000003FFFCu,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000080000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000004u,
					0x0000000000000000u,	0x000000001F000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0003C1B800000000u,
					0x000000021C000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000180u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x00000000000003C0u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000006000u,	0x0000000000000000u,
					0x0007FF0000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000001C00000000u,
					0x000001FFFC000000u,	0x0000001E00000000u,	0x000000001FFC0000u,	0x0000001C00000000u,
					0x00000180007FFE00u,	0x0000001C00200000u,	0x00037807FFE00000u,	0x0000000000000000u,
					0x0000000103FFC000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000003C00001FFEu,
					0x0200E67F60000000u,	0x00000000007C7F30u,	0x0000000000000000u,	0x0000000000000000u,
					0x000001FFFF800000u,	0x0000000000000001u,	0x0000003FFFFC0000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0xC0000007FCFE0000u,	0x0000000000000000u,
					0x00000007FFFC0000u,	0x0000000000000000u,	0x0000000003FFE000u,	0x8000000000000000u,
					0x0000000000003FFFu,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x000000001FFFC000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x00000035E6FC0000u,	0x0000000000000000u,	0xF3F8000000000000u,	0x00001FF800000047u,
					0x3FF80201EFE00000u,	0x0FFFF00000000000u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0xFB1Eull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0xFB1Eull) % 0x40ull));
				// 402 code units from 63 ranges (spanning a search area of 8060)
			}
			case 0x05: // [5] 11AEC - 152E7
			{
				if (U'\U00011C2F' > c || c > U'\U00011EF6')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x000000000001FEFFu,	0xFDFFFFF800000000u,	0x00000000000000FFu,	0x0000000000000000u,
					0x00000000017F68FCu,	0x000001F6F8000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x00000000000000F0u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x11C2Full) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x11C2Full) % 0x40ull));
				// 85 code units from 13 ranges (spanning a search area of 712)
			}
			case 0x06: // [6] 152E8 - 18AE3
			{
				if (U'\U00016AF0' > c || c > U'\U00016FF1')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x000000000000001Fu,	0x000000000000007Fu,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0xFFFFFFFE80000000u,	0x0000000780FFFFFFu,	0x0010000000000000u,
					0x0000000000000003u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x16AF0ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x16AF0ull) % 0x40ull));
				// 75 code units from 7 ranges (spanning a search area of 1282)
			}
			case 0x07: return U'\U0001BC9D' <= c && c <= U'\U0001BC9E';
			case 0x08: // [8] 1C2E0 - 1FADB
			{
				if (U'\U0001D165' > c || c > U'\U0001E94A')
					return false;

				constexpr uint_least64_t bitmask_table_1[] =
				{
					0x0000007F3FC03F1Fu,	0x00000000000001E0u,	0x0000000000000000u,	0x00000000E0000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0xFFFFFFFFF8000000u,	0xFFFFFFFFFFC3FFFFu,
					0xF7C00000800100FFu,	0x00000000000007FFu,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0xDFCFFFFBF8000000u,	0x000000000000003Eu,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x000000000003F800u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000780u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,	0x0000000000000000u,
					0x0000000000000000u,	0x0003F80000000000u,	0x0000000000000000u,	0x0000003F80000000u,
				};
				return bitmask_table_1[(static_cast<uint_least64_t>(c) - 0x1D165ull) / 0x40ull]
					& (0x1ull << ((static_cast<uint_least64_t>(c) - 0x1D165ull) % 0x40ull));
				// 223 code units from 21 ranges (spanning a search area of 6118)
			}
			case 0x3F: return U'\U000E0100' <= c;
			TOML_NO_DEFAULT_CASE;
		}
		// 2282 code units from 293 ranges (spanning a search area of 917232)
		TOML_UNREACHABLE;
	}

	#endif // TOML_LANG_UNRELEASED

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_bare_key_character(char32_t codepoint) noexcept
	{
		return is_ascii_letter(codepoint)
			|| is_decimal_digit(codepoint)
			|| codepoint == U'-'
			|| codepoint == U'_'
			#if TOML_LANG_UNRELEASED // toml/issues/644 ('+' in bare keys) & toml/issues/687 (unicode bare keys)
			|| codepoint == U'+'
			|| is_non_ascii_letter(codepoint)
			|| is_non_ascii_number(codepoint)
			|| is_combining_mark(codepoint)
			#endif
		;
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_value_terminator(char32_t codepoint) noexcept
	{
		return is_ascii_line_break(codepoint)
			|| is_ascii_whitespace(codepoint)
			|| codepoint == U']'
			|| codepoint == U'}'
			|| codepoint == U','
			|| codepoint == U'#'
			|| is_non_ascii_line_break(codepoint)
			|| is_non_ascii_whitespace(codepoint)
		;
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_control_character(char32_t codepoint) noexcept
	{
		return codepoint <= U'\u001F' || codepoint == U'\u007F';
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_nontab_control_character(char32_t codepoint) noexcept
	{
		return codepoint <= U'\u0008'
			|| (codepoint >= U'\u000A' && codepoint <= U'\u001F')
			|| codepoint == U'\u007F';
	}

	[[nodiscard]]
	TOML_ATTR(const)
	constexpr bool is_unicode_surrogate(char32_t codepoint) noexcept
	{
		return codepoint >= 0xD800u && codepoint <= 0xDFFF;
	}

	struct utf8_decoder final
	{
		// utf8_decoder based on this: https://bjoern.hoehrmann.de/utf-8/decoder/dfa/
		// Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>

		uint_least32_t state{};
		char32_t codepoint{};

		static constexpr uint8_t state_table[]
		{
			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,
			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,		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,		0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
			0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,		0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
			1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,		9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
			7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,		7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
			8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2,		2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
			10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3,		11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,

			0,12,24,36,60,96,84,12,12,12,48,72,		12,12,12,12,12,12,12,12,12,12,12,12,
			12, 0,12,12,12,12,12, 0,12, 0,12,12,	12,24,12,12,12,12,12,24,12,24,12,12,
			12,12,12,12,12,12,12,24,12,12,12,12,	12,24,12,12,12,12,12,12,12,24,12,12,
			12,12,12,12,12,12,12,36,12,36,12,12,	12,36,12,12,12,12,12,36,12,36,12,12,
			12,36,12,12,12,12,12,12,12,12,12,12
		};

		[[nodiscard]]
		constexpr bool error() const noexcept
		{
			return state == uint_least32_t{ 12u };
		}

		[[nodiscard]]
		constexpr bool has_code_point() const noexcept
		{
			return state == uint_least32_t{};
		}

		[[nodiscard]]
		constexpr bool needs_more_input() const noexcept
		{
			return state > uint_least32_t{} && state != uint_least32_t{ 12u };
		}

		constexpr void operator () (uint8_t byte) noexcept
		{
			TOML_ASSERT(!error());

			const auto type = state_table[byte];

			codepoint = static_cast<char32_t>(
				has_code_point()
					? (uint_least32_t{ 255u } >> type) & byte
					: (byte & uint_least32_t{ 63u }) | (static_cast<uint_least32_t>(codepoint) << 6)
				);

			state = state_table[state + uint_least32_t{ 256u } + type];
		}
	};
}
TOML_IMPL_NAMESPACE_END;
/// \endcond

TOML_POP_WARNINGS; // TOML_DISABLE_SWITCH_WARNINGS