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

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

#ifndef __MEASUNIT_IMPL_H__
#define __MEASUNIT_IMPL_H__

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include "unicode/measunit.h"
#include "cmemory.h"
#include "charstr.h"

U_NAMESPACE_BEGIN

namespace number {
namespace impl {
class LongNameHandler;
}
} // namespace number

static const char16_t kDefaultCurrency[] = …;
static const char kDefaultCurrency8[] = …;

/**
 * Looks up the "unitQuantity" (aka "type" or "category") of a base unit
 * identifier. The category is returned via `result`, which must initially be
 * empty.
 *
 * This only supports base units: other units must be resolved to base units
 * before passing to this function, otherwise U_UNSUPPORTED_ERROR status may be
 * returned.
 *
 * Categories are found in `unitQuantities` in the `units` resource (see
 * `units.txt`).
 */
// TODO: make this function accepts any `MeasureUnit` as Java and move it to the `UnitsData` class.
CharString U_I18N_API getUnitQuantity(const MeasureUnitImpl &baseMeasureUnitImpl, UErrorCode &status);

/**
 * A struct representing a single unit (optional SI or binary prefix, and dimensionality).
 */
struct U_I18N_API SingleUnitImpl : public UMemory { … };

// Forward declaration
struct MeasureUnitImplWithIndex;

// 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.)
#if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
template class U_I18N_API MaybeStackArray<SingleUnitImpl *, 8>;
template class U_I18N_API MemoryPool<SingleUnitImpl, 8>;
template class U_I18N_API MaybeStackVector<SingleUnitImpl, 8>;
#endif

/**
 * Internal representation of measurement units. Capable of representing all complexities of units,
 * including mixed and compound units.
 */
class U_I18N_API MeasureUnitImpl : public UMemory { … };

struct U_I18N_API MeasureUnitImplWithIndex : public UMemory { … };

// 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.)
#if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
template class U_I18N_API MaybeStackArray<MeasureUnitImplWithIndex *, 8>;
template class U_I18N_API MemoryPool<MeasureUnitImplWithIndex, 8>;
template class U_I18N_API MaybeStackVector<MeasureUnitImplWithIndex, 8>;

// Export an explicit template instantiation of the LocalPointer that is used as a
// data member of MeasureUnitImpl.
// (When building DLLs for Windows this is required.)
#if defined(_MSC_VER)
// Ignore warning 4661 as LocalPointerBase does not use operator== or operator!=
#pragma warning(push)
#pragma warning(disable : 4661)
#endif
template class U_I18N_API LocalPointerBase<MeasureUnitImpl>;
template class U_I18N_API LocalPointer<MeasureUnitImpl>;
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
#endif

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */
#endif //__MEASUNIT_IMPL_H__