Ascii.h

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// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <cstdint>
 
namespace mini_llvm {
 
namespace detail {
 
inline constexpr uint8_t kAsciiMasks[] = {
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19,
    0x19, 0x19, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x03,
    0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
    0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
    0x03, 0x03, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01,
    0x01, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05,
    0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
    0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
    0x05, 0x05, 0x05, 0x01, 0x01, 0x01, 0x01, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
 
inline constexpr char kAsciiLower[] = {
    '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
    '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
    '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
    '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f',
    '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
    '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f',
    '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37',
    '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f',
    '\x40',    'a',    'b',    'c',    'd',    'e',    'f',    'g',
       'h',    'i',    'j',    'k',    'l',    'm',    'n',    'o',
       'p',    'q',    'r',    's',    't',    'u',    'v',    'w',
       'x',    'y',    'z', '\x5b', '\x5c', '\x5d', '\x5e', '\x5f',
    '\x60', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67',
    '\x68', '\x69', '\x6a', '\x6b', '\x6c', '\x6d', '\x6e', '\x6f',
    '\x70', '\x71', '\x72', '\x73', '\x74', '\x75', '\x76', '\x77',
    '\x78', '\x79', '\x7a', '\x7b', '\x7c', '\x7d', '\x7e', '\x7f',
    '\x80', '\x81', '\x82', '\x83', '\x84', '\x85', '\x86', '\x87',
    '\x88', '\x89', '\x8a', '\x8b', '\x8c', '\x8d', '\x8e', '\x8f',
    '\x90', '\x91', '\x92', '\x93', '\x94', '\x95', '\x96', '\x97',
    '\x98', '\x99', '\x9a', '\x9b', '\x9c', '\x9d', '\x9e', '\x9f',
    '\xa0', '\xa1', '\xa2', '\xa3', '\xa4', '\xa5', '\xa6', '\xa7',
    '\xa8', '\xa9', '\xaa', '\xab', '\xac', '\xad', '\xae', '\xaf',
    '\xb0', '\xb1', '\xb2', '\xb3', '\xb4', '\xb5', '\xb6', '\xb7',
    '\xb8', '\xb9', '\xba', '\xbb', '\xbc', '\xbd', '\xbe', '\xbf',
    '\xc0', '\xc1', '\xc2', '\xc3', '\xc4', '\xc5', '\xc6', '\xc7',
    '\xc8', '\xc9', '\xca', '\xcb', '\xcc', '\xcd', '\xce', '\xcf',
    '\xd0', '\xd1', '\xd2', '\xd3', '\xd4', '\xd5', '\xd6', '\xd7',
    '\xd8', '\xd9', '\xda', '\xdb', '\xdc', '\xdd', '\xde', '\xdf',
    '\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7',
    '\xe8', '\xe9', '\xea', '\xeb', '\xec', '\xed', '\xee', '\xef',
    '\xf0', '\xf1', '\xf2', '\xf3', '\xf4', '\xf5', '\xf6', '\xf7',
    '\xf8', '\xf9', '\xfa', '\xfb', '\xfc', '\xfd', '\xfe', '\xff',
};
 
inline constexpr char kAsciiUpper[] = {
    '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
    '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
    '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
    '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f',
    '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
    '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f',
    '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37',
    '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f',
    '\x40', '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47',
    '\x48', '\x49', '\x4a', '\x4b', '\x4c', '\x4d', '\x4e', '\x4f',
    '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57',
    '\x58', '\x59', '\x5a', '\x5b', '\x5c', '\x5d', '\x5e', '\x5f',
    '\x60',    'A',    'B',    'C',    'D',    'E',    'F',    'G',
       'H',    'I',    'J',    'K',    'L',    'M',    'N',    'O',
       'P',    'Q',    'R',    'S',    'T',    'U',    'V',    'W',
       'X',    'Y',    'Z', '\x7b', '\x7c', '\x7d', '\x7e', '\x7f',
    '\x80', '\x81', '\x82', '\x83', '\x84', '\x85', '\x86', '\x87',
    '\x88', '\x89', '\x8a', '\x8b', '\x8c', '\x8d', '\x8e', '\x8f',
    '\x90', '\x91', '\x92', '\x93', '\x94', '\x95', '\x96', '\x97',
    '\x98', '\x99', '\x9a', '\x9b', '\x9c', '\x9d', '\x9e', '\x9f',
    '\xa0', '\xa1', '\xa2', '\xa3', '\xa4', '\xa5', '\xa6', '\xa7',
    '\xa8', '\xa9', '\xaa', '\xab', '\xac', '\xad', '\xae', '\xaf',
    '\xb0', '\xb1', '\xb2', '\xb3', '\xb4', '\xb5', '\xb6', '\xb7',
    '\xb8', '\xb9', '\xba', '\xbb', '\xbc', '\xbd', '\xbe', '\xbf',
    '\xc0', '\xc1', '\xc2', '\xc3', '\xc4', '\xc5', '\xc6', '\xc7',
    '\xc8', '\xc9', '\xca', '\xcb', '\xcc', '\xcd', '\xce', '\xcf',
    '\xd0', '\xd1', '\xd2', '\xd3', '\xd4', '\xd5', '\xd6', '\xd7',
    '\xd8', '\xd9', '\xda', '\xdb', '\xdc', '\xdd', '\xde', '\xdf',
    '\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7',
    '\xe8', '\xe9', '\xea', '\xeb', '\xec', '\xed', '\xee', '\xef',
    '\xf0', '\xf1', '\xf2', '\xf3', '\xf4', '\xf5', '\xf6', '\xf7',
    '\xf8', '\xf9', '\xfa', '\xfb', '\xfc', '\xfd', '\xfe', '\xff',
};
 
} // namespace detail
 
inline constexpr bool isAsciiPrintable(char ch) noexcept {
    return detail::kAsciiMasks[static_cast<uint8_t>(ch)] & 0x01;
}
 
inline constexpr bool isAsciiUpper(char ch) noexcept {
    return detail::kAsciiMasks[static_cast<uint8_t>(ch)] & 0x02;
}
 
inline constexpr bool isAsciiLower(char ch) noexcept {
    return detail::kAsciiMasks[static_cast<uint8_t>(ch)] & 0x04;
}
 
inline constexpr bool isAsciiLetter(char ch) noexcept {
    return detail::kAsciiMasks[static_cast<uint8_t>(ch)] & 0x06;
}
 
inline constexpr bool isAsciiDigit(char ch) noexcept {
    return detail::kAsciiMasks[static_cast<uint8_t>(ch)] & 0x08;
}
 
inline constexpr bool isAsciiLetterOrDigit(char ch) noexcept {
    return detail::kAsciiMasks[static_cast<uint8_t>(ch)] & 0x0e;
}
 
inline constexpr bool isAsciiHexDigit(char ch) noexcept {
    return detail::kAsciiMasks[static_cast<uint8_t>(ch)] & 0x10;
}
 
inline constexpr char toAsciiLower(char ch) noexcept{
    return detail::kAsciiLower[static_cast<uint8_t>(ch)];
}
 
inline constexpr char toAsciiUpper(char ch) noexcept {
    return detail::kAsciiUpper[static_cast<uint8_t>(ch)];
}
 
} // namespace mini_llvm