real::detail::char_class Struct Reference

A set of byte values (0–255) as a 256-bit bitmap. More...

#include <charclass.hpp>

Public Member Functions
constexpr void	set (std::uint8_t byte)
	Adds byte byte to the set.
constexpr void	set_range (std::uint8_t low, std::uint8_t high)
	Adds the inclusive byte range [low, high] to the set.
constexpr void	merge (const char_class &other)
	Unions other into this set.
constexpr void	invert_ascii ()
	Complements the ASCII half (bytes 0–127) only.
constexpr void	invert ()
	Full 256-bit complement (binary mode: raw bytes, no UTF-8).
constexpr bool	test (std::uint8_t byte) const
	Tests membership of byte byte.
constexpr bool	empty () const
	Reports whether the set has no members.
constexpr bool	operator== (const char_class &) const =default

Public Attributes
std::array< std::uint64_t, 4 >	bits {}
	Bitmap; bit byte is byte byte's membership.

Detailed Description

A set of byte values (0–255) as a 256-bit bitmap.

Membership, insertion and complement are all O(1) or O(256) and constexpr. All bit manipulation uses unsigned operands (MISRA forbids signed bitwise).

Definition at line 29 of file charclass.hpp.

Member Function Documentation

empty()

constexpr bool real::detail::char_class::empty ( ) const

inlineconstexpr

Reports whether the set has no members.

Returns

true if the set is empty.

Definition at line 117 of file charclass.hpp.

invert()

constexpr void real::detail::char_class::invert ( )

inlineconstexpr

Full 256-bit complement (binary mode: raw bytes, no UTF-8).

Definition at line 95 of file charclass.hpp.

invert_ascii()

constexpr void real::detail::char_class::invert_ascii ( )

inlineconstexpr

Complements the ASCII half (bytes 0–127) only.

Bytes >= 0x80 are left untouched; the compiler handles non-ASCII codepoints as explicit UTF-8 multi-byte alternatives instead.

Definition at line 86 of file charclass.hpp.

merge()

constexpr void real::detail::char_class::merge ( const char_class &  other )

inlineconstexpr

Unions other into this set.

Parameters

[in]

other

The set whose members are added to this one.

Definition at line 73 of file charclass.hpp.

operator==()

constexpr bool real::detail::char_class::operator== ( const char_class &  ) const

constexprdefault

set()

constexpr void real::detail::char_class::set ( std::uint8_t  byte )

inlineconstexpr

Adds byte byte to the set.

Parameters

[in]

byte

The byte to insert.

Definition at line 37 of file charclass.hpp.

set_range()

constexpr void real::detail::char_class::set_range ( std::uint8_t  low, std::uint8_t  high  )

inlineconstexpr

Adds the inclusive byte range [low, high] to the set.

Parameters

[in]	low	First byte of the range.
[in]	high	Last byte of the range (inclusive).

Definition at line 48 of file charclass.hpp.

test()

constexpr bool real::detail::char_class::test ( std::uint8_t  byte ) const

inlineconstexpr

Tests membership of byte byte.

Parameters

[in]

byte

The byte to test.

Returns

true if byte is in the set.

Definition at line 107 of file charclass.hpp.

Member Data Documentation

bits

std::array<std::uint64_t, 4> real::detail::char_class::bits {}

Bitmap; bit byte is byte byte's membership.

Definition at line 31 of file charclass.hpp.

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The documentation for this struct was generated from the following file:

• include/real/core/charclass.hpp