v1::iso_639 Class Reference

#include <hikogui/i18n/iso_639.hpp>

Public Member Functions
constexpr	iso_639 (iso_639 const &) noexcept=default
constexpr	iso_639 (iso_639 &&) noexcept=default
constexpr iso_639 &	operator= (iso_639 const &) noexcept=default
constexpr iso_639 &	operator= (iso_639 &&) noexcept=default
constexpr	iso_639 () noexcept
	Construct empty language.
constexpr	iso_639 (std::string_view str)
	Construct a language from the 2 or 3 letter code.
constexpr	iso_639 (std::in_place_t, uint16_t v) noexcept
constexpr uint16_t const &	intrinsic () const noexcept
constexpr uint16_t &	intrinsic () noexcept
constexpr std::size_t	size () const noexcept
	Get the number of character.
constexpr bool	empty () const noexcept
	Check if the language is empty.
constexpr	operator bool () const noexcept
	Check if the language is used.
size_t	hash () const noexcept
	Get the hash value for this language code.
constexpr std::string	code () const noexcept
	Get the 2 or 3 letter ISO-639 code.

Friends
template<std::size_t I>
constexpr friend bool	set (iso_639 &rhs, char c) noexcept
	Set the letter at a specific position.
template<std::size_t I>
constexpr friend char	get (iso_639 const &rhs) noexcept
	Get the letter at a specific position.
constexpr friend std::string	to_string (iso_639 const &rhs) noexcept
constexpr friend bool	operator== (iso_639 const &lhs, iso_639 const &rhs) noexcept=default
	Compare two language codes.
constexpr friend auto	operator<=> (iso_639 const &lhs, iso_639 const &rhs) noexcept=default
	Compare two language codes.
constexpr friend bool	matches (iso_639 const &lhs, iso_639 const &rhs) noexcept
	Check if rhs matches with lhs.

Detailed Description

ISO-639 language code.

A 2 or 3 lower case language code selected from the following iso standards:

1. ISO 639-1 (2002)
2. ISO 639-2 (1998)
3. ISO 639-3 (2007)
4. ISO 639-5 (2008)

This class compresses this 2 or 3 character language code inside 15 bits.

Constructor & Destructor Documentation

iso_639() [1/2]

constexpr v1::iso_639::iso_639 ( )

inlineconstexprnoexcept

Construct empty language.

iso_639() [2/2]

constexpr v1::iso_639::iso_639 ( std::string_view str )

inlineconstexpr

Construct a language from the 2 or 3 letter code.

Member Function Documentation

code()

constexpr std::string v1::iso_639::code ( ) const

inlineconstexprnoexcept

Get the 2 or 3 letter ISO-639 code.

empty()

constexpr bool v1::iso_639::empty ( ) const

inlineconstexprnoexcept

Check if the language is empty.

hash()

size_t v1::iso_639::hash ( ) const

inlinenoexcept

Get the hash value for this language code.

operator bool()

constexpr v1::iso_639::operator bool ( ) const

inlineexplicitconstexprnoexcept

Check if the language is used.

size()

constexpr std::size_t v1::iso_639::size ( ) const

inlineconstexprnoexcept

Get the number of character.

Returns

2 or 3 for a code, or 0 if empty.

Friends And Related Symbol Documentation

get

template<std::size_t I>

constexpr friend char get ( iso_639 const & rhs )

friend

Get the letter at a specific position.

Template Parameters

I

index

Parameters

rhs	The language code read from.

Returns

The character at index, a-z, 0-5 or nul.

matches

constexpr friend bool matches ( iso_639 const & lhs, iso_639 const & rhs )

friend

Check if rhs matches with lhs.

Parameters

lhs	The language or wild-card.
rhs	The language.

Returns

True when lhs is a wild-card or when lhs and rhs are equal.

operator<=>

constexpr friend auto operator<=> ( iso_639 const & lhs, iso_639 const & rhs )

friend

Compare two language codes.

operator==

constexpr friend bool operator== ( iso_639 const & lhs, iso_639 const & rhs )

friend

Compare two language codes.

set

template<std::size_t I>

constexpr friend bool set ( iso_639 & rhs, char c )

friend

Set the letter at a specific position.

Template Parameters

I

index

Parameters

rhs	The language code to change.
c	The character to set. a-z, A-Z, 0-5 or nul.

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

• hikogui/src/hikogui/i18n/iso_639.hpp