ICU 78.1 78.1

Data Structures | Public Types | Public Member Functions | Friends
icu::message2::MessageFormatter Class Reference

`#include <messageformat2.h>`

Inheritance diagram for icu::message2::MessageFormatter:

## Data Structures
class | Builder
| The mutable Builder class allows each part of the MessageFormatter to be initialized separately; calling its `build()` method yields an immutable MessageFormatter. More...

## Public Types
enum | UMFErrorHandlingBehavior { U_MF_BEST_EFFORT = 0 , U_MF_STRICT }
| Used in conjunction with the MessageFormatter::Builder::setErrorHandlingBehavior() method. More...
typedef enum icu::message2::MessageFormatter::UMFErrorHandlingBehavior | UMFErrorHandlingBehavior
| Used in conjunction with the MessageFormatter::Builder::setErrorHandlingBehavior() method. More...

## Public Member Functions
U_I18N_API MessageFormatter & | operator= (MessageFormatter &&) noexcept
| Move assignment operator: The source MessageFormatter will be left in a valid but undefined state. More...
virtual U_I18N_API | ~MessageFormatter ()
| Destructor. More...
U_I18N_API UnicodeString | formatToString (const MessageArguments &arguments, UErrorCode &status)
| Formats the message to a string, using the data model that was previously set or parsed, and the given `arguments` object. More...
U_I18N_API FormattedMessage | format (const MessageArguments &arguments, UErrorCode &status) const
| Not yet implemented; formats the message to a `FormattedMessage` object, using the data model that was previously set or parsed, and the given `arguments` object. More...
U_I18N_API const Locale & | getLocale () const
| Accesses the locale that this `MessageFormatter` object was created with. More...
U_I18N_API UnicodeString | getPattern () const
| Serializes the data model as a string in MessageFormat 2.0 syntax. More...
U_I18N_API const MFDataModel & | getDataModel () const
| Accesses the data model referred to by this `MessageFormatter` object. More...
U_I18N_API const UnicodeString & | getNormalizedPattern () const
| Returns a string consisting of the input with optional spaces removed. 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 | Builder
class | Checker
class | MessageArguments
class | MessageContext

## Detailed Description

MessageFormatter is a Technical Preview API implementing MessageFormat 2.0.

See the description of the syntax with examples and use cases and the corresponding ABNF grammar.

The MessageFormatter class is mutable and movable. It is not copyable. (It is mutable because if it has a custom function registry, the registry may include `FormatterFactory` objects implementing custom formatters, which are allowed to contain mutable state.)

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 54 of file messageformat2.h.

## Member Typedef Documentation

## ◆ UMFErrorHandlingBehavior

typedef enum icu::message2::MessageFormatter::UMFErrorHandlingBehavior icu::message2::MessageFormatter::UMFErrorHandlingBehavior

Used in conjunction with the MessageFormatter::Builder::setErrorHandlingBehavior() method.

Internal:
  Do not use. This API is for internal use only. ICU 76 technology preview

Deprecated:
  This API is for technology preview only.

## Member Enumeration Documentation

## ◆ UMFErrorHandlingBehavior

enum icu::message2::MessageFormatter::UMFErrorHandlingBehavior

Used in conjunction with the MessageFormatter::Builder::setErrorHandlingBehavior() method.

Internal:
  Do not use. This API is for internal use only. ICU 76 technology preview

Deprecated:
  This API is for technology preview only.

Enumerator
U_MF_BEST_EFFORT | Suppress errors and return best-effort output. Internal: Do not use. This API is for internal use only. ICU 76 technology preview Deprecated: This API is for technology preview only.
U_MF_STRICT | Signal all MessageFormat errors using the UErrorCode argument. Internal: Do not use. This API is for internal use only. ICU 76 technology preview Deprecated: This API is for technology preview only.

Definition at line 152 of file messageformat2.h.

## Constructor & Destructor Documentation

## ◆ ~MessageFormatter()

virtual U_I18N_API icu::message2::MessageFormatter::~MessageFormatter | ( |  | ) |
| 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

## ◆ format()

U_I18N_API FormattedMessage icu::message2::MessageFormatter::format | ( | const MessageArguments & | arguments,
|  | UErrorCode & | status
| ) |  | const
| inline

Not yet implemented; formats the message to a `FormattedMessage` object, using the data model that was previously set or parsed, and the given `arguments` object.

Parameters

  arguments | Reference to message arguments
  status | Input/output error code used to indicate syntax errors, data model errors, resolution errors, formatting errors, selection errors, as well as other errors (such as memory allocation failures). Partial output is still provided in the presence of most error types.

Returns
  The `FormattedMessage` representing the formatted message.

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 105 of file messageformat2.h.

References U_SUCCESS, and U_UNSUPPORTED_ERROR.

## ◆ formatToString()

U_I18N_API UnicodeString icu::message2::MessageFormatter::formatToString | ( | const MessageArguments & | arguments,
|  | UErrorCode & | status
| ) |  |

Formats the message to a string, using the data model that was previously set or parsed, and the given `arguments` object.

Parameters

  arguments | Reference to message arguments
  status | Input/output error code used to indicate syntax errors, data model errors, resolution errors, formatting errors, selection errors, as well as other errors (such as memory allocation failures). Partial output is still provided in the presence of most error types.

Returns
  The string result of formatting the message with the given arguments.

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

Deprecated:
  This API is for technology preview only.

## ◆ getDataModel()

U_I18N_API const MFDataModel& icu::message2::MessageFormatter::getDataModel | ( |  | ) | const

Accesses the data model referred to by this `MessageFormatter` object.

Returns
  A reference to the data model.

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

Deprecated:
  This API is for technology preview only.

## ◆ getLocale()

U_I18N_API const Locale& icu::message2::MessageFormatter::getLocale | ( |  | ) | const
| inline

Accesses the locale that this `MessageFormatter` object was created with.

Returns
  A reference to the locale.

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 121 of file messageformat2.h.

## ◆ getNormalizedPattern()

U_I18N_API const UnicodeString& icu::message2::MessageFormatter::getNormalizedPattern | ( |  | ) | const
| inline

Returns a string consisting of the input with optional spaces removed.

Returns
  A normalized string representation of the input

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 329 of file messageformat2.h.

## ◆ getPattern()

U_I18N_API UnicodeString icu::message2::MessageFormatter::getPattern | ( |  | ) | const

Serializes the data model as a string in MessageFormat 2.0 syntax.

Returns
  result A string representation of the data model. The string is a valid MessageFormat 2.0 message.

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 MessageFormatter& icu::message2::MessageFormatter::operator= | ( | MessageFormatter && |  | ) |
| noexcept

Move assignment operator: The source MessageFormatter will be left in 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.

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

- i18n/unicode/messageformat2.h