The Expression class corresponds to the expression nonterminal in the MessageFormat 2 grammar and the Expression interface defined in https://github.com/unicode-org/message-format-wg/blob/main/spec/data-model.md#patterns. More...

#include <messageformat2_data_model.h>

Inheritance diagram for icu::message2::data_model::Expression:

Data Structures
class	Builder
	The mutable `Expression::Builder` class allows the operator to be constructed incrementally. More...

Public Member Functions
U_I18N_API UBool	isStandaloneAnnotation () const
	Checks if this expression is an annotation with no operand. More...

U_I18N_API UBool	isFunctionCall () const
	Checks if this expression has a function annotation (with or without an operand). More...

U_I18N_API const Operator *	getOperator (UErrorCode &status) const
	Accesses the function annotating this expression. More...

U_I18N_API const Operand &	getOperand () const
	Accesses the operand of this expression. More...

U_I18N_API std::vector< Option >	getAttributes () const
	Gets the attributes of this expression. More...

U_I18N_API	Expression (const Expression &other)
	Copy constructor. More...

U_I18N_API Expression &	operator= (Expression) noexcept
	Assignment operator. More...

U_I18N_API	Expression ()
	Default constructor. More...

virtual U_I18N_API	~Expression ()
	Destructor. More...

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

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

Friends
class	message2::Serializer

U_I18N_API friend void	swap (Expression &e1, Expression &e2) noexcept
	Non-member swap function. More...

Detailed Description

The Expression class corresponds to the expression nonterminal in the MessageFormat 2 grammar and the Expression interface defined in https://github.com/unicode-org/message-format-wg/blob/main/spec/data-model.md#patterns.

It represents either an operand with no annotation; an annotation with no operand; or an operand annotated with an annotation.

Expression is immutable, copyable and movable.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

Definition at line 1161 of file messageformat2_data_model.h.

Constructor & Destructor Documentation

◆ Expression() [1/2]

U_I18N_API icu::message2::data_model::Expression::Expression ( const Expression & other )

Copy constructor.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

◆ Expression() [2/2]

U_I18N_API icu::message2::data_model::Expression::Expression ( )

Default constructor.

Puts the Expression into a valid but undefined state.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

◆ ~Expression()

virtual U_I18N_API icu::message2::data_model::Expression::~Expression ( )

virtual

Destructor.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

Member Function Documentation

◆ getAttributes()

U_I18N_API std::vector<Option> icu::message2::data_model::Expression::getAttributes ( ) const

inline

Gets the attributes of this expression.

Returns: A vector of attributes

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

Definition at line 1217 of file messageformat2_data_model.h.

◆ getOperand()

U_I18N_API const Operand& icu::message2::data_model::Expression::getOperand ( ) const

Accesses the operand of this expression.

Returns: A reference to the operand of this expression, which may be the null operand.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

◆ getOperator()

U_I18N_API const Operator* icu::message2::data_model::Expression::getOperator ( UErrorCode & status ) const

Accesses the function annotating this expression.

If !(isFunctionCall()), sets status to U_INVALID_STATE_ERROR.

Parameters

status Input/output error code.

Returns: A non-owned pointer to the operator of this expression, which does not outlive the expression.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

◆ isFunctionCall()

U_I18N_API UBool icu::message2::data_model::Expression::isFunctionCall ( ) const

Checks if this expression has a function annotation (with or without an operand).

Returns: True if and only if the expression has an annotation that is a function.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

◆ isStandaloneAnnotation()

U_I18N_API UBool icu::message2::data_model::Expression::isStandaloneAnnotation ( ) const

Checks if this expression is an annotation with no operand.

Returns: True if and only if the expression has an annotation and has no operand.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

◆ operator=()

U_I18N_API Expression& icu::message2::data_model::Expression::operator= ( Expression )

noexcept

Assignment operator.

Internal:: Do not use. This API is for internal use only. ICU 75 technology preview

Deprecated:: This API is for technology preview only.

Friends And Related Function Documentation

◆ swap

U_I18N_API friend void swap	(	Expression &	e1,
		Expression &	e2
	)

friend

Non-member swap function.