ladybird/AK/CharacterTypes.h
Andreas Kling ae3ffdd521 AK: Make it possible to not using AK classes into the global namespace
This patch adds the `USING_AK_GLOBALLY` macro which is enabled by
default, but can be overridden by build flags.

This is a step towards integrating Jakt and AK types.
2022-11-26 15:51:34 +01:00

204 lines
5.4 KiB
C++

/*
* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Array.h>
#include <AK/Types.h>
// NOTE: For a quick reference for most of this, see https://www.cplusplus.com/reference/cctype/ and https://infra.spec.whatwg.org/#code-points.
// NOTE: To avoid ambiguity when including this header, all methods contains names should contain "ascii" or "unicode".
namespace AK {
constexpr bool is_ascii(u32 code_point)
{
return code_point < 0x80;
}
constexpr bool is_ascii_digit(u32 code_point)
{
return code_point >= '0' && code_point <= '9';
}
constexpr bool is_ascii_upper_alpha(u32 code_point)
{
return (code_point >= 'A' && code_point <= 'Z');
}
constexpr bool is_ascii_lower_alpha(u32 code_point)
{
return (code_point >= 'a' && code_point <= 'z');
}
constexpr bool is_ascii_alpha(u32 code_point)
{
return is_ascii_lower_alpha(code_point) || is_ascii_upper_alpha(code_point);
}
constexpr bool is_ascii_alphanumeric(u32 code_point)
{
return is_ascii_alpha(code_point) || is_ascii_digit(code_point);
}
constexpr bool is_ascii_binary_digit(u32 code_point)
{
return code_point == '0' || code_point == '1';
}
constexpr bool is_ascii_octal_digit(u32 code_point)
{
return code_point >= '0' && code_point <= '7';
}
constexpr bool is_ascii_hex_digit(u32 code_point)
{
return is_ascii_digit(code_point) || (code_point >= 'A' && code_point <= 'F') || (code_point >= 'a' && code_point <= 'f');
}
constexpr bool is_ascii_blank(u32 code_point)
{
return code_point == '\t' || code_point == ' ';
}
constexpr bool is_ascii_space(u32 code_point)
{
return code_point == ' ' || code_point == '\t' || code_point == '\n' || code_point == '\v' || code_point == '\f' || code_point == '\r';
}
constexpr bool is_ascii_punctuation(u32 code_point)
{
return (code_point >= 0x21 && code_point <= 0x2F) || (code_point >= 0x3A && code_point <= 0x40) || (code_point >= 0x5B && code_point <= 0x60) || (code_point >= 0x7B && code_point <= 0x7E);
}
constexpr bool is_ascii_graphical(u32 code_point)
{
return code_point >= 0x21 && code_point <= 0x7E;
}
constexpr bool is_ascii_printable(u32 code_point)
{
return code_point >= 0x20 && code_point <= 0x7E;
}
constexpr bool is_ascii_c0_control(u32 code_point)
{
return code_point < 0x20;
}
constexpr bool is_ascii_control(u32 code_point)
{
return is_ascii_c0_control(code_point) || code_point == 0x7F;
}
constexpr bool is_unicode(u32 code_point)
{
return code_point <= 0x10FFFF;
}
constexpr bool is_unicode_control(u32 code_point)
{
return is_ascii_c0_control(code_point) || (code_point >= 0x7E && code_point <= 0x9F);
}
constexpr bool is_unicode_surrogate(u32 code_point)
{
return code_point >= 0xD800 && code_point <= 0xDFFF;
}
constexpr bool is_unicode_scalar_value(u32 code_point)
{
return is_unicode(code_point) && !is_unicode_surrogate(code_point);
}
constexpr bool is_unicode_noncharacter(u32 code_point)
{
return is_unicode(code_point) && ((code_point >= 0xFDD0 && code_point <= 0xFDEF) || ((code_point & 0xFFFE) == 0xFFFE) || ((code_point & 0xFFFF) == 0xFFFF));
}
constexpr u32 to_ascii_lowercase(u32 code_point)
{
if (is_ascii_upper_alpha(code_point))
return code_point + 0x20;
return code_point;
}
constexpr u32 to_ascii_uppercase(u32 code_point)
{
if (is_ascii_lower_alpha(code_point))
return code_point - 0x20;
return code_point;
}
constexpr u32 parse_ascii_digit(u32 code_point)
{
if (is_ascii_digit(code_point))
return code_point - '0';
VERIFY_NOT_REACHED();
}
constexpr u32 parse_ascii_hex_digit(u32 code_point)
{
if (is_ascii_digit(code_point))
return parse_ascii_digit(code_point);
if (code_point >= 'A' && code_point <= 'F')
return code_point - 'A' + 10;
if (code_point >= 'a' && code_point <= 'f')
return code_point - 'a' + 10;
VERIFY_NOT_REACHED();
}
constexpr u32 parse_ascii_base36_digit(u32 code_point)
{
if (is_ascii_digit(code_point))
return parse_ascii_digit(code_point);
if (code_point >= 'A' && code_point <= 'Z')
return code_point - 'A' + 10;
if (code_point >= 'a' && code_point <= 'z')
return code_point - 'a' + 10;
VERIFY_NOT_REACHED();
}
constexpr u32 to_ascii_base36_digit(u32 digit)
{
constexpr Array<char, 36> base36_map = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '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' };
VERIFY(digit < base36_map.size());
return base36_map[digit];
}
}
#if USING_AK_GLOBALLY
using AK::is_ascii;
using AK::is_ascii_alpha;
using AK::is_ascii_alphanumeric;
using AK::is_ascii_binary_digit;
using AK::is_ascii_blank;
using AK::is_ascii_c0_control;
using AK::is_ascii_control;
using AK::is_ascii_digit;
using AK::is_ascii_graphical;
using AK::is_ascii_hex_digit;
using AK::is_ascii_lower_alpha;
using AK::is_ascii_octal_digit;
using AK::is_ascii_printable;
using AK::is_ascii_punctuation;
using AK::is_ascii_space;
using AK::is_ascii_upper_alpha;
using AK::is_unicode;
using AK::is_unicode_control;
using AK::is_unicode_noncharacter;
using AK::is_unicode_scalar_value;
using AK::is_unicode_surrogate;
using AK::parse_ascii_base36_digit;
using AK::parse_ascii_digit;
using AK::parse_ascii_hex_digit;
using AK::to_ascii_base36_digit;
using AK::to_ascii_lowercase;
using AK::to_ascii_uppercase;
#endif