#pragma once #include "CoreTypes.h" #include "Templates/Optional.h" #include "TypeTraits/TypeTraits.h" #include "Miscellaneous/AssertionMacros.h" #include <locale> #include <climits> NAMESPACE_REDCRAFT_BEGIN NAMESPACE_MODULE_BEGIN(Redcraft) NAMESPACE_MODULE_BEGIN(Utility) template <typename T> concept CCharType = CSameAs<T, char> || CSameAs<T, wchar> || CSameAs<T, u8char> || CSameAs<T, u16char> || CSameAs<T, u32char>; NAMESPACE_PRIVATE_BEGIN template <CCharType> struct TLiteral; template <> struct TLiteral<char> { NODISCARD FORCEINLINE static constexpr char Select(const char X, const wchar , const u8char , const u16char , const u32char ) { return X; } NODISCARD FORCEINLINE static constexpr const char* Select(const char* X, const wchar*, const u8char*, const u16char*, const u32char*) { return X; } }; template <> struct TLiteral<wchar> { NODISCARD FORCEINLINE static constexpr wchar Select(const char , const wchar X, const u8char , const u16char , const u32char ) { return X; } NODISCARD FORCEINLINE static constexpr const wchar* Select(const char*, const wchar* X, const u8char*, const u16char*, const u32char*) { return X; } }; template <> struct TLiteral<u8char> { NODISCARD FORCEINLINE static constexpr u8char Select(const char , const wchar , const u8char X, const u16char , const u32char ) { return X; } NODISCARD FORCEINLINE static constexpr const u8char* Select(const char*, const wchar*, const u8char* X, const u16char*, const u32char*) { return X; } }; template <> struct TLiteral<u16char> { NODISCARD FORCEINLINE static constexpr u16char Select(const char , const wchar , const u8char , const u16char X, const u32char ) { return X; } NODISCARD FORCEINLINE static constexpr const u16char* Select(const char*, const wchar*, const u8char*, const u16char* X, const u32char*) { return X; } }; template <> struct TLiteral<u32char> { NODISCARD FORCEINLINE static constexpr u32char Select(const char , const wchar , const u8char , const u16char , const u32char X) { return X; } NODISCARD FORCEINLINE static constexpr const u32char* Select(const char*, const wchar*, const u8char*, const u16char*, const u32char* X) { return X; } }; NAMESPACE_PRIVATE_END /** Templated literal struct to allow selection of string literals based on the character type provided, and not on compiler switches. */ #define LITERAL(CharType, StringLiteral) NAMESPACE_PRIVATE::TLiteral<CharType>::Select(TEXT(StringLiteral), WTEXT(StringLiteral), U8TEXT(StringLiteral), U16TEXT(StringLiteral), U32TEXT(StringLiteral)) /** Set of utility functions operating on a single character. Implemented based on user-preferred locale and ISO 30112 "i18n". */ template <CCharType T> struct TChar { using CharType = T; /** The maximum number of code units required to represent a single character. if unknown, guess 1. */ static constexpr size_t MaxCodeUnitLength = CSameAs<CharType, char> ? MB_LEN_MAX : CSameAs<CharType, wchar> ? PLATFORM_WINDOWS ? 2 : PLATFORM_LINUX ? 1 : 1 : CSameAs<CharType, u8char> ? 4 : CSameAs<CharType, u16char> ? 2 : CSameAs<CharType, u32char> ? 1 : 1; /** Whether the character type is fixed-length. */ static constexpr bool bIsFixedLength = MaxCodeUnitLength == 1; NODISCARD FORCEINLINE static constexpr bool IsValid(CharType InChar) { if constexpr (CSameAs<CharType, u8char>) { if ((InChar & 0b10000000) == 0b00000000) return true; return false; } else if constexpr (CSameAs<CharType, u16char> || CSameAs<CharType, u32char>) { if (InChar >= 0xD800 && InChar <= 0xDBFF) return false; if (InChar >= 0xDC00 && InChar <= 0xDFFF) return false; return InChar <= 0x10FFFF; } // Windows uses UTF-16 encoding for wchar. else if constexpr (PLATFORM_WINDOWS && (CSameAs<CharType, wchar>)) { return TChar::IsValid(static_cast<u16char>(InChar)); } // Linux uses UTF-32 encoding for wchar. else if constexpr (PLATFORM_LINUX && (CSameAs<CharType, wchar>)) { return TChar::IsValid(static_cast<u32char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsNonch(CharType InChar) { if constexpr (CSameAs<CharType, u8char>) { return false; } else if constexpr (CSameAs<CharType, u16char>) { if (InChar >= U16TEXT('\uFDD0') && InChar <= U16TEXT('\uFDEF')) return true; if (InChar == U16TEXT('\uFFFE')) return true; if (InChar == U16TEXT('\uFFFF')) return true; return false; } else if constexpr (CSameAs<CharType, u32char>) { if (InChar >= U32TEXT('\uFDD0') && InChar <= U32TEXT('\uFDEF')) return true; if ((InChar & 0x0000FFFE) == 0x0000FFFE) return TChar::IsValid(InChar); return false; } // Windows uses UTF-16 encoding for wchar. else if constexpr (PLATFORM_WINDOWS && (CSameAs<CharType, wchar>)) { return TChar::IsNonch(static_cast<u16char>(InChar)); } // Linux uses UTF-32 encoding for wchar. else if constexpr (PLATFORM_LINUX && (CSameAs<CharType, wchar>)) { return TChar::IsNonch(static_cast<u32char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsAlnum(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::isalnum(InChar, Loc); } else { return TChar::IsAlpha(InChar) || TChar::IsDigit(InChar); } } NODISCARD FORCEINLINE static constexpr bool IsAlpha(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::isalpha(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * <U0041>..<U005A>;<U0061>..<U007A>; */ if ((InChar >= U8TEXT('\u0041') && InChar <= U8TEXT('\u005A')) || (InChar >= U8TEXT('\u0061') && InChar <= U8TEXT('\u007A'))) return true; return false; } else if constexpr (CSameAs<CharType, u16char> || CSameAs<CharType, u32char>) { checkf(InChar <= LITERAL(CharType, '\u007F'), TEXT("TChar::IsAlpha() only supports basic latin block.")); if (InChar > LITERAL(CharType, '\u007F')) return false; return TChar<u8char>::IsAlpha(static_cast<u8char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsLower(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::islower(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * <U0061>..<U007A>; */ if (InChar >= U8TEXT('\u0061') && InChar <= U8TEXT('\u007A')) return true; return false; } else if constexpr (CSameAs<CharType, u16char>) { checkf(InChar <= U16TEXT('\u007F'), TEXT("TChar::IsLower() only supports basic latin block.")); if (InChar > U16TEXT('\u007F')) return false; return TChar<u8char>::IsLower(static_cast<u8char>(InChar)); } else if constexpr (CSameAs<CharType, u32char>) { checkf(InChar <= U32TEXT('\u007F'), TEXT("TChar::IsLower() only supports basic latin block.")); if (InChar > U32TEXT('\u007F')) return false; return TChar<u8char>::IsLower(static_cast<u8char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsUpper(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::isupper(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * <U0041>..<U005A>; */ if (InChar >= U8TEXT('\u0041') && InChar <= U8TEXT('\u005A')) return true; return false; } else if constexpr (CSameAs<CharType, u16char>) { checkf(InChar <= U16TEXT('\u007F'), TEXT("TChar::IsUpper() only supports basic latin block.")); if (InChar > U16TEXT('\u007F')) return false; return TChar<u8char>::IsUpper(static_cast<u8char>(InChar)); } else if constexpr (CSameAs<CharType, u32char>) { checkf(InChar <= U32TEXT('\u007F'), TEXT("TChar::IsUpper() only supports basic latin block.")); if (InChar > U32TEXT('\u007F')) return false; return TChar<u8char>::IsUpper(static_cast<u8char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsDigit(CharType InChar) { /* <U0030>..<U0039>; */ return (InChar >= LITERAL(CharType, '0') && InChar <= LITERAL(CharType, '9')); } NODISCARD FORCEINLINE static constexpr bool IsDigit(CharType InChar, int Base) { checkf(Base >= 2 && Base <= 36, TEXT("Base must be in the range [2, 36].")); /* <U0030>..<U0039>;<U0041>..<U0046>;<U0061>..<U0066>; */ return (InChar >= LITERAL(CharType, '0') && InChar < LITERAL(CharType, '0') + Base ) || (InChar >= LITERAL(CharType, 'a') && InChar < LITERAL(CharType, 'a') + Base - 10) || (InChar >= LITERAL(CharType, 'A') && InChar < LITERAL(CharType, 'A') + Base - 10); } NODISCARD FORCEINLINE static constexpr bool IsCntrl(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::iscntrl(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* <U0000>..<U001F>;<U007F>; */ return (InChar >= U8TEXT('\u0000') && InChar <= U8TEXT('\u001F')) || InChar == U8TEXT('\u007F'); } else if constexpr (CSameAs<CharType, u16char>) { /* <U0000>..<U001F>;<U007F>..<U009F>;<U2028>;<U2029>; */ return (InChar >= U16TEXT('\u0000') && InChar <= U16TEXT('\u001F')) || (InChar >= U16TEXT('\u007F') && InChar <= U16TEXT('\u009F')) || (InChar == U16TEXT('\u2028') || InChar == U16TEXT('\u2029')); } else if constexpr (CSameAs<CharType, u32char>) { /* <U0000>..<U001F>;<U007F>..<U009F>;<U2028>;<U2029>; */ return (InChar >= U32TEXT('\u0000') && InChar <= U32TEXT('\u001F')) || (InChar >= U32TEXT('\u007F') && InChar <= U32TEXT('\u009F')) || (InChar == U32TEXT('\u2028') || InChar == U32TEXT('\u2029')); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsGraph(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::isgraph(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * <U0021>..<U007E>; */ if (InChar >= U8TEXT('\u0021') && InChar <= U8TEXT('\u007E')) return true; return false; } else if constexpr (CSameAs<CharType, u16char>) { checkf(InChar <= U16TEXT('\u007F'), TEXT("TChar::IsGraph() only supports basic latin block.")); if (InChar > U16TEXT('\u007F')) return false; return TChar<u8char>::IsGraph(static_cast<u8char>(InChar)); } else if constexpr (CSameAs<CharType, u32char>) { checkf(InChar <= U32TEXT('\u007F'), TEXT("TChar::IsGraph() only supports basic latin block.")); if (InChar > U32TEXT('\u007F')) return false; return TChar<u8char>::IsGraph(static_cast<u8char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsSpace(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::isspace(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* * ISO/IEC 6429 * <U0009>..<U000D>; */ if (InChar >= U8TEXT('\u0009') && InChar <= U8TEXT('\u000D')) return true; /* * BASIC LATIN * <U0020>; */ if (InChar == U8TEXT('\u0020')) return true; return false; } else if constexpr (CSameAs<CharType, u16char>) { /* * ISO/IEC 6429 * <U0009>..<U000D>; */ if (InChar >= U16TEXT('\u0009') && InChar <= U16TEXT('\u000D')) return true; /* * BASIC LATIN * <U0020>; */ if (InChar == U16TEXT('\u0020')) return true; /* * OGHAM * <U1680>; */ if (InChar == U16TEXT('\u1680')) return true; /* * MONGOL * <U180E>; */ if (InChar == U16TEXT('\u180E')) return true; /* * GENERAL PUNCTUATION * <U2000>..<U2006>;<U2008>..<U200A>;<U2028>;<U2029>;<U205F>; */ if ((InChar >= U16TEXT('\u2000') && InChar <= U16TEXT('\u2006')) || (InChar >= U16TEXT('\u2008') && InChar <= U16TEXT('\u200A')) || (InChar == U16TEXT('\u2028') || InChar == U16TEXT('\u2029')) || (InChar == U16TEXT('\u205F'))) return true; /* * CJK SYMBOLS AND PUNCTUATION, HIRAGANA * <U3000>; */ if (InChar == U16TEXT('\u3000')) return true; return false; } else if constexpr (CSameAs<CharType, u32char>) { /* * ISO/IEC 6429 * <U0009>..<U000D>; */ if (InChar >= U32TEXT('\u0009') && InChar <= U32TEXT('\u000D')) return true; /* * BASIC LATIN * <U0020>; */ if (InChar == U32TEXT('\u0020')) return true; /* * OGHAM * <U1680>; */ if (InChar == U32TEXT('\u1680')) return true; /* * MONGOL * <U180E>; */ if (InChar == U32TEXT('\u180E')) return true; /* * GENERAL PUNCTUATION * <U2000>..<U2006>;<U2008>..<U200A>;<U2028>;<U2029>;<U205F>; */ if ((InChar >= U32TEXT('\u2000') && InChar <= U32TEXT('\u2006')) || (InChar >= U32TEXT('\u2008') && InChar <= U32TEXT('\u200A')) || (InChar == U32TEXT('\u2028') || InChar == U32TEXT('\u2029')) || (InChar == U32TEXT('\u205F'))) return true; /* * CJK SYMBOLS AND PUNCTUATION, HIRAGANA * <U3000>; */ if (InChar == U32TEXT('\u3000')) return true; return false; } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsBlank(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::isblank(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* <U0009>;<U0020>; */ return InChar == U8TEXT('\u0009') || InChar == U8TEXT('\u0020'); } else if constexpr (CSameAs<CharType, u16char>) { /* <U0009>;<U0020>;<U1680>;<U180E>;<U2000>..<U2006>;<U2008>..<U200A>;<U205F>;<U3000>; */ return (InChar >= U16TEXT('\u2000') && InChar <= U16TEXT('\u2006')) || (InChar == U16TEXT('\u0009') || InChar == U16TEXT('\u0020')) || (InChar == U16TEXT('\u1680') || InChar == U16TEXT('\u180E')) || (InChar == U16TEXT('\u2008') || InChar == U16TEXT('\u200A')) || (InChar == U16TEXT('\u205F') || InChar == U16TEXT('\u3000')); } else if constexpr (CSameAs<CharType, u32char>) { /* <U0009>;<U0020>;<U1680>;<U180E>;<U2000>..<U2006>;<U2008>..<U200A>;<U205F>;<U3000>; */ return (InChar >= U32TEXT('\u2000') && InChar <= U32TEXT('\u2006')) || (InChar == U32TEXT('\u0009') || InChar == U32TEXT('\u0020')) || (InChar == U32TEXT('\u1680') || InChar == U32TEXT('\u180E')) || (InChar == U32TEXT('\u2008') || InChar == U32TEXT('\u200A')) || (InChar == U32TEXT('\u205F') || InChar == U32TEXT('\u3000')); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsPrint(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::isprint(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * <U0020>..<U007E>; */ if (InChar >= U8TEXT('\u0020') && InChar <= U8TEXT('\u007E')) return true; return false; } else if constexpr (CSameAs<CharType, u16char>) { checkf(InChar <= U16TEXT('\u007F'), TEXT("TChar::IsPrint() only supports basic latin block.")); if (InChar > U16TEXT('\u007F')) return false; return TChar<u8char>::IsPrint(static_cast<u8char>(InChar)); } else if constexpr (CSameAs<CharType, u32char>) { checkf(InChar <= U32TEXT('\u007F'), TEXT("TChar::IsPrint() only supports basic latin block.")); if (InChar > U32TEXT('\u007F')) return false; return TChar<u8char>::IsPrint(static_cast<u8char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr bool IsPunct(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return NAMESPACE_STD::ispunct(InChar, Loc); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * <U0021>..<U002F>;<U003A>..<U0040>;<U005B>..<U0060>;<U007B>..<U007E>; */ if ((InChar >= U8TEXT('\u0021') && InChar <= U8TEXT('\u002F')) || (InChar >= U8TEXT('\u003A') && InChar <= U8TEXT('\u0040')) || (InChar >= U8TEXT('\u005B') && InChar <= U8TEXT('\u0060')) || (InChar >= U8TEXT('\u007B') && InChar <= U8TEXT('\u007E'))) return true; return false; } else if constexpr (CSameAs<CharType, u16char>) { checkf(InChar <= U16TEXT('\u007F'), TEXT("TChar::IsPunct() only supports basic latin block.")); if (InChar > U16TEXT('\u007F')) return false; return TChar<u8char>::IsPunct(static_cast<u8char>(InChar)); } else if constexpr (CSameAs<CharType, u32char>) { checkf(InChar <= U32TEXT('\u007F'), TEXT("TChar::IsPunct() only supports basic latin block.")); if (InChar > U32TEXT('\u007F')) return false; return TChar<u8char>::IsPunct(static_cast<u8char>(InChar)); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return false; } NODISCARD FORCEINLINE static constexpr CharType ToLower(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return static_cast<CharType>(NAMESPACE_STD::tolower(InChar, Loc)); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * (<U0041>,<U0061>);(<U0042>,<U0062>);(<U0043>,<U0063>);(<U0044>,<U0064>); * (<U0045>,<U0065>);(<U0046>,<U0066>);(<U0047>,<U0067>);(<U0048>,<U0068>); * (<U0049>,<U0069>);(<U004A>,<U006A>);(<U004B>,<U006B>);(<U004C>,<U006C>); * (<U004D>,<U006D>);(<U004E>,<U006E>);(<U004F>,<U006F>);(<U0050>,<U0070>); * (<U0051>,<U0071>);(<U0052>,<U0072>);(<U0053>,<U0073>);(<U0054>,<U0074>); * (<U0055>,<U0075>);(<U0056>,<U0076>);(<U0057>,<U0077>);(<U0058>,<U0078>); * (<U0059>,<U0079>);(<U005A>,<U007A>); */ if (InChar >= U8TEXT('\u0041') && InChar <= U8TEXT('\u005A')) return InChar + U8TEXT('\u0020'); return InChar; } else if constexpr (CSameAs<CharType, u16char>) { checkf(InChar <= U16TEXT('\u007F'), TEXT("TChar::ToLower() only supports basic latin block.")); if (InChar > U16TEXT('\u007F')) return false; return static_cast<u16char>(TChar<u8char>::ToLower(static_cast<u8char>(InChar))); } else if constexpr (CSameAs<CharType, u32char>) { checkf(InChar <= U32TEXT('\u007F'), TEXT("TChar::ToLower() only supports basic latin block.")); if (InChar > U32TEXT('\u007F')) return false; return static_cast<u16char>(TChar<u8char>::ToLower(static_cast<u8char>(InChar))); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return InChar; } NODISCARD FORCEINLINE static constexpr CharType ToUpper(CharType InChar) { if constexpr (CSameAs<CharType, char> || CSameAs<CharType, wchar>) { NAMESPACE_STD::locale Loc(""); return static_cast<CharType>(NAMESPACE_STD::toupper(InChar, Loc)); } else if constexpr (CSameAs<CharType, u8char>) { /* * BASIC LATIN * (<U0061>,<U0041>);(<U0062>,<U0042>);(<U0063>,<U0043>);(<U0064>,<U0044>);/ * (<U0065>,<U0045>);(<U0066>,<U0046>);(<U0067>,<U0047>);(<U0068>,<U0048>);/ * (<U0069>,<U0049>);(<U006A>,<U004A>);(<U006B>,<U004B>);(<U006C>,<U004C>);/ * (<U006D>,<U004D>);(<U006E>,<U004E>);(<U006F>,<U004F>);(<U0070>,<U0050>);/ * (<U0071>,<U0051>);(<U0072>,<U0052>);(<U0073>,<U0053>);(<U0074>,<U0054>);/ * (<U0075>,<U0055>);(<U0076>,<U0056>);(<U0077>,<U0057>);(<U0078>,<U0058>);/ * (<U0079>,<U0059>);(<U007A>,<U005A>); */ if (InChar >= U8TEXT('\u0061') && InChar <= U8TEXT('\u007A')) return InChar - U8TEXT('\u0020'); return InChar; } else if constexpr (CSameAs<CharType, u16char>) { checkf(InChar <= U16TEXT('\u007F'), TEXT("TChar::ToUpper() only supports basic latin block.")); if (InChar > U16TEXT('\u007F')) return false; return static_cast<u16char>(TChar<u8char>::ToUpper(static_cast<u8char>(InChar))); } else if constexpr (CSameAs<CharType, u32char>) { checkf(InChar <= U32TEXT('\u007F'), TEXT("TChar::ToUpper() only supports basic latin block.")); if (InChar > U32TEXT('\u007F')) return false; return static_cast<u16char>(TChar<u8char>::ToUpper(static_cast<u8char>(InChar))); } else static_assert(sizeof(CharType) == -1, "Unsupported character type"); return InChar; } NODISCARD FORCEINLINE static constexpr TOptional<unsigned> ToDigit(CharType InChar) { switch (InChar) { case LITERAL(CharType, '0'): return 0; case LITERAL(CharType, '1'): return 1; case LITERAL(CharType, '2'): return 2; case LITERAL(CharType, '3'): return 3; case LITERAL(CharType, '4'): return 4; case LITERAL(CharType, '5'): return 5; case LITERAL(CharType, '6'): return 6; case LITERAL(CharType, '7'): return 7; case LITERAL(CharType, '8'): return 8; case LITERAL(CharType, '9'): return 9; case LITERAL(CharType, 'a'): return 10; case LITERAL(CharType, 'b'): return 11; case LITERAL(CharType, 'c'): return 12; case LITERAL(CharType, 'd'): return 13; case LITERAL(CharType, 'e'): return 14; case LITERAL(CharType, 'f'): return 15; case LITERAL(CharType, 'g'): return 16; case LITERAL(CharType, 'h'): return 17; case LITERAL(CharType, 'i'): return 18; case LITERAL(CharType, 'j'): return 19; case LITERAL(CharType, 'k'): return 20; case LITERAL(CharType, 'l'): return 21; case LITERAL(CharType, 'm'): return 22; case LITERAL(CharType, 'n'): return 23; case LITERAL(CharType, 'o'): return 24; case LITERAL(CharType, 'p'): return 25; case LITERAL(CharType, 'q'): return 26; case LITERAL(CharType, 'r'): return 27; case LITERAL(CharType, 's'): return 28; case LITERAL(CharType, 't'): return 29; case LITERAL(CharType, 'u'): return 30; case LITERAL(CharType, 'v'): return 31; case LITERAL(CharType, 'w'): return 32; case LITERAL(CharType, 'x'): return 33; case LITERAL(CharType, 'y'): return 34; case LITERAL(CharType, 'z'): return 35; case LITERAL(CharType, 'A'): return 10; case LITERAL(CharType, 'B'): return 11; case LITERAL(CharType, 'C'): return 12; case LITERAL(CharType, 'D'): return 13; case LITERAL(CharType, 'E'): return 14; case LITERAL(CharType, 'F'): return 15; case LITERAL(CharType, 'G'): return 16; case LITERAL(CharType, 'H'): return 17; case LITERAL(CharType, 'I'): return 18; case LITERAL(CharType, 'J'): return 19; case LITERAL(CharType, 'K'): return 20; case LITERAL(CharType, 'L'): return 21; case LITERAL(CharType, 'M'): return 22; case LITERAL(CharType, 'N'): return 23; case LITERAL(CharType, 'O'): return 24; case LITERAL(CharType, 'P'): return 25; case LITERAL(CharType, 'Q'): return 26; case LITERAL(CharType, 'R'): return 27; case LITERAL(CharType, 'S'): return 28; case LITERAL(CharType, 'T'): return 29; case LITERAL(CharType, 'U'): return 30; case LITERAL(CharType, 'V'): return 31; case LITERAL(CharType, 'W'): return 32; case LITERAL(CharType, 'X'): return 33; case LITERAL(CharType, 'Y'): return 34; case LITERAL(CharType, 'Z'): return 35; default: return Invalid; } } NODISCARD FORCEINLINE static constexpr TOptional<CharType> FromDigit(int InDigit) { if (InDigit < 0 || InDigit > 35) return Invalid; return LITERAL(CharType, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ")[InDigit]; } }; using FChar = TChar<char>; using FWChar = TChar<wchar>; using FU8Char = TChar<u8char>; using FU16Char = TChar<u16char>; using FU32Char = TChar<u32char>; using FUnicodeChar = TChar<unicodechar>; static_assert(FUnicodeChar::bIsFixedLength); NAMESPACE_MODULE_END(Utility) NAMESPACE_MODULE_END(Redcraft) NAMESPACE_REDCRAFT_END