Interface that selector classes must implement. More...

Inheritance diagram for icu::message2::Selector:

Public Member Functions
virtual void	selectKey (FormattedPlaceholder &&toFormat, FunctionOptions &&options, const UnicodeString keys, int32_t keysLen, UnicodeString prefs, int32_t &prefsLen, UErrorCode &status) const =0
	Compares the input to an array of keys, and returns an array of matching keys sorted by preference.

virtual	~Selector ()
	Destructor.

Public Member Functions inherited from icu::UObject
virtual	~UObject ()
	Destructor.

virtual UClassID	getDynamicClassID () const
	ICU4C "poor man's RTTI", returns a UClassID for the actual ICU class.

Detailed Description

Interface that selector classes must implement.

Internal:: Do not use. This API is for internal use only. ICU 75.0 technology preview

Constructor & Destructor Documentation

virtual icu::message2::Selector::~Selector ( )

virtual

Destructor.

Internal:: Do not use. This API is for internal use only. ICU 75.0 technology preview

virtual void icu::message2::Selector::selectKey	(	FormattedPlaceholder &&	toFormat,
		FunctionOptions &&	options,
		const UnicodeString *	keys,
		int32_t	keysLen,
		UnicodeString *	prefs,
		int32_t &	prefsLen,
		UErrorCode &	status
	)		const

pure virtual

Compares the input to an array of keys, and returns an array of matching keys sorted by preference.

Parameters

toFormat	The unnamed function argument; passed by move.
options	A reference to the named function options.
keys	An array of strings that are compared to the input (`context.getFormattableInput()`) in an implementation-specific way.
keysLen	The length of `keys`.
prefs	An array of strings with length `keysLen`. The contents of the array is undefined. `selectKey()` should set the contents of `prefs` to a subset of `keys`, with the best match placed at the lowest index.
prefsLen	A reference that `selectKey()` should set to the length of `prefs`, which must be less than or equal to `keysLen`.
status	Input/output error code. Should not be set directly by the custom selector, which should use `FormattingContext::setSelectorError()` to signal errors. The custom selector may pass `status` to other ICU functions that can signal errors using this mechanism.

Internal:: Do not use. This API is for internal use only. ICU 75.0 technology preview

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