messageformat2_arguments.h

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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_NORMALIZATION
 
#if !UCONFIG_NO_FORMATTING
 
#if !UCONFIG_NO_MF2

 
#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

// 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
 
namespace message2 {
 
    class MessageFormatter;
 
    // Arguments
    // ----------

    class U_I18N_API MessageArguments : public UObject {
    public:
        MessageArguments(const std::map<UnicodeString, Formattable>& args, UErrorCode& status) {
            if (U_FAILURE(status)) {
                return;
            }
            argumentNames = LocalArray<UnicodeString>(new UnicodeString[argsLen = static_cast<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++;
            }
        }

        MessageArguments& operator=(MessageArguments&&) noexcept;
        MessageArguments() = default;
        virtual ~MessageArguments();
    private:
        friend class MessageContext;
 
        const Formattable* getArgument(const MessageFormatter&,
                                       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 /* #if !UCONFIG_NO_NORMALIZATION */
 
#endif /* U_SHOW_CPLUSPLUS_API */
 
#endif // MESSAGEFORMAT2_ARGUMENTS_H
 
// eof