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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
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