chromium/third_party/icu/source/i18n/units_data.h

// © 2020 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING
#ifndef __UNITS_DATA_H__
#define __UNITS_DATA_H__

#include <limits>

#include "charstr.h"
#include "cmemory.h"
#include "unicode/stringpiece.h"
#include "unicode/uobject.h"

U_NAMESPACE_BEGIN
namespace units {

/**
 * Encapsulates "convertUnits" information from units resources, specifying how
 * to convert from one unit to another.
 *
 * Information in this class is still in the form of strings: symbolic constants
 * need to be interpreted. Rationale: symbols can cancel out for higher
 * precision conversion - going from feet to inches should cancel out the
 * `ft_to_m` constant.
 */
class U_I18N_API ConversionRateInfo : public UMemory { … };

} // namespace units

// Export explicit template instantiations of MaybeStackArray, MemoryPool and
// MaybeStackVector. This is required when building DLLs for Windows. (See
// datefmt.h, collationiterator.h, erarules.h and others for similar examples.)
//
// Note: These need to be outside of the units namespace, or Clang will generate
// a compile error.
#if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
template class U_I18N_API MaybeStackArray<units::ConversionRateInfo*, 8>;
template class U_I18N_API MemoryPool<units::ConversionRateInfo, 8>;
template class U_I18N_API MaybeStackVector<units::ConversionRateInfo, 8>;
#endif

namespace units {

/**
 * Returns ConversionRateInfo for all supported conversions.
 *
 * @param result Receives the set of conversion rates.
 * @param status Receives status.
 */
void U_I18N_API getAllConversionRates(MaybeStackVector<ConversionRateInfo> &result, UErrorCode &status);

/**
 * Contains all the supported conversion rates.
 */
class U_I18N_API ConversionRates { … };

// Encapsulates unitPreferenceData information from units resources, specifying
// a sequence of output unit preferences.
struct U_I18N_API UnitPreference : public UMemory { … };

/**
 * Metadata about the preferences in UnitPreferences::unitPrefs_.
 *
 * This class owns all of its data.
 *
 * UnitPreferenceMetadata lives in the anonymous namespace, because it should
 * only be useful to internal code and unit testing code.
 */
class U_I18N_API UnitPreferenceMetadata : public UMemory { … };

} // namespace units

// Export explicit template instantiations of MaybeStackArray, MemoryPool and
// MaybeStackVector. This is required when building DLLs for Windows. (See
// datefmt.h, collationiterator.h, erarules.h and others for similar examples.)
//
// Note: These need to be outside of the units namespace, or Clang will generate
// a compile error.
#if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
template class U_I18N_API MaybeStackArray<units::UnitPreferenceMetadata*, 8>;
template class U_I18N_API MemoryPool<units::UnitPreferenceMetadata, 8>;
template class U_I18N_API MaybeStackVector<units::UnitPreferenceMetadata, 8>;
template class U_I18N_API MaybeStackArray<units::UnitPreference*, 8>;
template class U_I18N_API MemoryPool<units::UnitPreference, 8>;
template class U_I18N_API MaybeStackVector<units::UnitPreference, 8>;
#endif

namespace units {

/**
 * Unit Preferences information for various locales and usages.
 */
class U_I18N_API UnitPreferences { … };

} // namespace units
U_NAMESPACE_END

#endif //__UNITS_DATA_H__

#endif /* #if !UCONFIG_NO_FORMATTING */