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// © 2024 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html #include "unicode/utypes.h" #ifndef MESSAGEFORMAT2_ARGUMENTS_H #define MESSAGEFORMAT2_ARGUMENTS_H #if U_SHOW_CPLUSPLUS_API #if !UCONFIG_NO_FORMATTING #if !UCONFIG_NO_MF2 /** * \file * \brief C++ API: Formats messages using the draft MessageFormat 2.0. */ #include "unicode/messageformat2_data_model_names.h" #include "unicode/messageformat2_formattable.h" #include "unicode/unistr.h" #ifndef U_HIDE_DEPRECATED_API #include <map> U_NAMESPACE_BEGIN /// @cond DOXYGEN_IGNORE // Export an explicit template instantiation of the LocalPointer that is used as a // data member of various MessageFormatDataModel classes. // (When building DLLs for Windows this is required.) // (See measunit_impl.h, datefmt.h, collationiterator.h, erarules.h and others // for similar examples.) #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN template class U_I18N_API LocalPointerBase<UnicodeString>; template class U_I18N_API LocalPointerBase<message2::Formattable>; template class U_I18N_API LocalArray<UnicodeString>; template class U_I18N_API LocalArray<message2::Formattable>; #endif /// @endcond namespace message2 { class MessageContext; // Arguments // ---------- /** * * The `MessageArguments` class represents the named arguments to a message. * It is immutable and movable. It is not copyable. * * @internal ICU 75 technology preview * @deprecated This API is for technology preview only. */ class U_I18N_API MessageArguments : public UObject { public: /** * Message arguments constructor, which takes a map and returns a container * of arguments that can be passed to a `MessageFormatter`. * * @param args A reference to a map from strings (argument names) to `message2::Formattable` * objects (argument values). The keys and values of the map are copied into the result. * @param status Input/output error code. * * @internal ICU 75 technology preview * @deprecated This API is for technology preview only. */ MessageArguments(const std::map<UnicodeString, Formattable>& args, UErrorCode& status) { if (U_FAILURE(status)) { return; } argumentNames = LocalArray<UnicodeString>(new UnicodeString[argsLen = (int32_t) args.size()]); arguments = LocalArray<Formattable>(new Formattable[argsLen]); if (!argumentNames.isValid() || !arguments.isValid()) { status = U_MEMORY_ALLOCATION_ERROR; return; } int32_t i = 0; for (auto iter = args.begin(); iter != args.end(); ++iter) { argumentNames[i] = iter->first; arguments[i] = iter->second; i++; } } /** * Move operator: * The source MessageArguments will be left in a valid but undefined state. * * @internal ICU 75 technology preview * @deprecated This API is for technology preview only. */ MessageArguments& operator=(MessageArguments&&) noexcept; /** * Default constructor. * Returns an empty arguments mapping. * * @internal ICU 75 technology preview * @deprecated This API is for technology preview only. */ MessageArguments() = default; /** * Destructor. * * @internal ICU 75 technology preview * @deprecated This API is for technology preview only. */ virtual ~MessageArguments(); private: friend class MessageContext; const Formattable* getArgument(const data_model::VariableName&, UErrorCode&) const; // Avoids using Hashtable so that code constructing a Hashtable // doesn't have to appear in this header file LocalArray<UnicodeString> argumentNames; LocalArray<Formattable> arguments; int32_t argsLen = 0; }; // class MessageArguments } // namespace message2 U_NAMESPACE_END #endif // U_HIDE_DEPRECATED_API #endif /* #if !UCONFIG_NO_MF2 */ #endif /* #if !UCONFIG_NO_FORMATTING */ #endif /* U_SHOW_CPLUSPLUS_API */ #endif // MESSAGEFORMAT2_ARGUMENTS_H // eof