chromium/third_party/icu/source/i18n/collationkeys.cpp

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2012-2015, International Business Machines
* Corporation and others.  All Rights Reserved.
*******************************************************************************
* collationkeys.cpp
*
* created on: 2012sep02
* created by: Markus W. Scherer
*/

#include "unicode/utypes.h"

#if !UCONFIG_NO_COLLATION

#include "unicode/bytestream.h"
#include "collation.h"
#include "collationiterator.h"
#include "collationkeys.h"
#include "collationsettings.h"
#include "uassert.h"

U_NAMESPACE_BEGIN

SortKeyByteSink::~SortKeyByteSink() { … }

void
SortKeyByteSink::Append(const char *bytes, int32_t n) { … }

char *
SortKeyByteSink::GetAppendBuffer(int32_t min_capacity,
                                 int32_t desired_capacity_hint,
                                 char *scratch,
                                 int32_t scratch_capacity,
                                 int32_t *result_capacity) { … }

namespace {

/**
 * uint8_t byte buffer, similar to CharString but simpler.
 */
class SortKeyLevel : public UMemory { … };

void SortKeyLevel::appendByte(uint32_t b) { … }

void
SortKeyLevel::appendWeight16(uint32_t w) { … }

void
SortKeyLevel::appendWeight32(uint32_t w) { … }

void
SortKeyLevel::appendReverseWeight16(uint32_t w) { … }

UBool SortKeyLevel::ensureCapacity(int32_t appendCapacity) { … }

}  // namespace

CollationKeys::LevelCallback::~LevelCallback() { … }

UBool
CollationKeys::LevelCallback::needToWrite(Collation::Level /*level*/) { … }

/**
 * Map from collation strength (UColAttributeValue)
 * to a mask of Collation::Level bits up to that strength,
 * excluding the CASE_LEVEL which is independent of the strength,
 * and excluding IDENTICAL_LEVEL which this function does not write.
 */
static const uint32_t levelMasks[UCOL_STRENGTH_LIMIT] = …;

void
CollationKeys::writeSortKeyUpToQuaternary(CollationIterator &iter,
                                          const UBool *compressibleBytes,
                                          const CollationSettings &settings,
                                          SortKeyByteSink &sink,
                                          Collation::Level minLevel, LevelCallback &callback,
                                          UBool preflight, UErrorCode &errorCode) { … }

U_NAMESPACE_END

#endif  // !UCONFIG_NO_COLLATION