| // © 2016 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 2011-2014 International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| */ |
| |
| #ifndef INDEXCHARS_H |
| #define INDEXCHARS_H |
| |
| #include "unicode/utypes.h" |
| #include "unicode/uobject.h" |
| #include "unicode/locid.h" |
| #include "unicode/unistr.h" |
| |
| #if !UCONFIG_NO_COLLATION |
| |
| /** |
| * \file |
| * \brief C++ API: Index Characters |
| */ |
| |
| U_CDECL_BEGIN |
| |
| /** |
| * Constants for Alphabetic Index Label Types. |
| * The form of these enum constants anticipates having a plain C API |
| * for Alphabetic Indexes that will also use them. |
| * @stable ICU 4.8 |
| */ |
| typedef enum UAlphabeticIndexLabelType { |
| /** |
| * Normal Label, typically the starting letter of the names |
| * in the bucket with this label. |
| * @stable ICU 4.8 |
| */ |
| U_ALPHAINDEX_NORMAL = 0, |
| |
| /** |
| * Undeflow Label. The bucket with this label contains names |
| * in scripts that sort before any of the bucket labels in this index. |
| * @stable ICU 4.8 |
| */ |
| U_ALPHAINDEX_UNDERFLOW = 1, |
| |
| /** |
| * Inflow Label. The bucket with this label contains names |
| * in scripts that sort between two of the bucket labels in this index. |
| * Inflow labels are created when an index contains normal labels for |
| * multiple scripts, and skips other scripts that sort between some of the |
| * included scripts. |
| * @stable ICU 4.8 |
| */ |
| U_ALPHAINDEX_INFLOW = 2, |
| |
| /** |
| * Overflow Label. Te bucket with this label contains names in scripts |
| * that sort after all of the bucket labels in this index. |
| * @stable ICU 4.8 |
| */ |
| U_ALPHAINDEX_OVERFLOW = 3 |
| } UAlphabeticIndexLabelType; |
| |
| |
| struct UHashtable; |
| U_CDECL_END |
| |
| U_NAMESPACE_BEGIN |
| |
| // Forward Declarations |
| |
| class BucketList; |
| class Collator; |
| class RuleBasedCollator; |
| class StringEnumeration; |
| class UnicodeSet; |
| class UVector; |
| |
| /** |
| * AlphabeticIndex supports the creation of a UI index appropriate for a given language. |
| * It can support either direct use, or use with a client that doesn't support localized collation. |
| * The following is an example of what an index might look like in a UI: |
| * |
| * <pre> |
| * <b>... A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...</b> |
| * |
| * <b>A</b> |
| * Addison |
| * Albertson |
| * Azensky |
| * <b>B</b> |
| * Baker |
| * ... |
| * </pre> |
| * |
| * The class can generate a list of labels for use as a UI "index", that is, a list of |
| * clickable characters (or character sequences) that allow the user to see a segment |
| * (bucket) of a larger "target" list. That is, each label corresponds to a bucket in |
| * the target list, where everything in the bucket is greater than or equal to the character |
| * (according to the locale's collation). Strings can be added to the index; |
| * they will be in sorted order in the right bucket. |
| * <p> |
| * The class also supports having buckets for strings before the first (underflow), |
| * after the last (overflow), and between scripts (inflow). For example, if the index |
| * is constructed with labels for Russian and English, Greek characters would fall |
| * into an inflow bucket between the other two scripts. |
| * <p> |
| * The AlphabeticIndex class is not intended for public subclassing. |
| * |
| * <p><em>Note:</em> If you expect to have a lot of ASCII or Latin characters |
| * as well as characters from the user's language, |
| * then it is a good idea to call addLabels(Locale::getEnglish(), status).</p> |
| * |
| * <h2>Direct Use</h2> |
| * <p>The following shows an example of building an index directly. |
| * The "show..." methods below are just to illustrate usage. |
| * |
| * <pre> |
| * // Create a simple index. "Item" is assumed to be an application |
| * // defined type that the application's UI and other processing knows about, |
| * // and that has a name. |
| * |
| * UErrorCode status = U_ZERO_ERROR; |
| * AlphabeticIndex index = new AlphabeticIndex(desiredLocale, status); |
| * index->addLabels(additionalLocale, status); |
| * for (Item *item in some source of Items ) { |
| * index->addRecord(item->name(), item, status); |
| * } |
| * ... |
| * // Show index at top. We could skip or gray out empty buckets |
| * |
| * while (index->nextBucket(status)) { |
| * if (showAll || index->getBucketRecordCount() != 0) { |
| * showLabelAtTop(UI, index->getBucketLabel()); |
| * } |
| * } |
| * ... |
| * // Show the buckets with their contents, skipping empty buckets |
| * |
| * index->resetBucketIterator(status); |
| * while (index->nextBucket(status)) { |
| * if (index->getBucketRecordCount() != 0) { |
| * showLabelInList(UI, index->getBucketLabel()); |
| * while (index->nextRecord(status)) { |
| * showIndexedItem(UI, static_cast<Item *>(index->getRecordData())) |
| * </pre> |
| * |
| * The caller can build different UIs using this class. |
| * For example, an index character could be omitted or grayed-out |
| * if its bucket is empty. Small buckets could also be combined based on size, such as: |
| * |
| * <pre> |
| * <b>... A-F G-N O-Z ...</b> |
| * </pre> |
| * |
| * <h2>Client Support</h2> |
| * <p>Callers can also use the AlphabeticIndex::ImmutableIndex, or the AlphabeticIndex itself, |
| * to support sorting on a client that doesn't support AlphabeticIndex functionality. |
| * |
| * <p>The ImmutableIndex is both immutable and thread-safe. |
| * The corresponding AlphabeticIndex methods are not thread-safe because |
| * they "lazily" build the index buckets. |
| * <ul> |
| * <li>ImmutableIndex.getBucket(index) provides random access to all |
| * buckets and their labels and label types. |
| * <li>The AlphabeticIndex bucket iterator or ImmutableIndex.getBucket(0..getBucketCount-1) |
| * can be used to get a list of the labels, |
| * such as "...", "A", "B",..., and send that list to the client. |
| * <li>When the client has a new name, it sends that name to the server. |
| * The server needs to call the following methods, |
| * and communicate the bucketIndex and collationKey back to the client. |
| * |
| * <pre> |
| * int32_t bucketIndex = index.getBucketIndex(name, status); |
| * const UnicodeString &label = immutableIndex.getBucket(bucketIndex)->getLabel(); // optional |
| * int32_t skLength = collator.getSortKey(name, sk, skCapacity); |
| * </pre> |
| * |
| * <li>The client would put the name (and associated information) into its bucket for bucketIndex. The sort key sk is a |
| * sequence of bytes that can be compared with a binary compare, and produce the right localized result.</li> |
| * </ul> |
| * |
| * @stable ICU 4.8 |
| */ |
| class U_I18N_API AlphabeticIndex: public UObject { |
| public: |
| /** |
| * An index "bucket" with a label string and type. |
| * It is referenced by getBucketIndex(), |
| * and returned by ImmutableIndex.getBucket(). |
| * |
| * The Bucket class is not intended for public subclassing. |
| * @stable ICU 51 |
| */ |
| class U_I18N_API Bucket : public UObject { |
| public: |
| /** |
| * Destructor. |
| * @stable ICU 51 |
| */ |
| virtual ~Bucket(); |
| |
| /** |
| * Returns the label string. |
| * |
| * @return the label string for the bucket |
| * @stable ICU 51 |
| */ |
| const UnicodeString &getLabel() const { return label_; } |
| /** |
| * Returns whether this bucket is a normal, underflow, overflow, or inflow bucket. |
| * |
| * @return the bucket label type |
| * @stable ICU 51 |
| */ |
| UAlphabeticIndexLabelType getLabelType() const { return labelType_; } |
| |
| private: |
| friend class AlphabeticIndex; |
| friend class BucketList; |
| |
| UnicodeString label_; |
| UnicodeString lowerBoundary_; |
| UAlphabeticIndexLabelType labelType_; |
| Bucket *displayBucket_; |
| int32_t displayIndex_; |
| UVector *records_; // Records are owned by the inputList_ vector. |
| |
| Bucket(const UnicodeString &label, // Parameter strings are copied. |
| const UnicodeString &lowerBoundary, |
| UAlphabeticIndexLabelType type); |
| }; |
| |
| /** |
| * Immutable, thread-safe version of AlphabeticIndex. |
| * This class provides thread-safe methods for bucketing, |
| * and random access to buckets and their properties, |
| * but does not offer adding records to the index. |
| * |
| * The ImmutableIndex class is not intended for public subclassing. |
| * |
| * @stable ICU 51 |
| */ |
| class U_I18N_API ImmutableIndex : public UObject { |
| public: |
| /** |
| * Destructor. |
| * @stable ICU 51 |
| */ |
| virtual ~ImmutableIndex(); |
| |
| /** |
| * Returns the number of index buckets and labels, including underflow/inflow/overflow. |
| * |
| * @return the number of index buckets |
| * @stable ICU 51 |
| */ |
| int32_t getBucketCount() const; |
| |
| /** |
| * Finds the index bucket for the given name and returns the number of that bucket. |
| * Use getBucket() to get the bucket's properties. |
| * |
| * @param name the string to be sorted into an index bucket |
| * @return the bucket number for the name |
| * @stable ICU 51 |
| */ |
| int32_t getBucketIndex(const UnicodeString &name, UErrorCode &errorCode) const; |
| |
| /** |
| * Returns the index-th bucket. Returns NULL if the index is out of range. |
| * |
| * @param index bucket number |
| * @return the index-th bucket |
| * @stable ICU 51 |
| */ |
| const Bucket *getBucket(int32_t index) const; |
| |
| private: |
| friend class AlphabeticIndex; |
| |
| ImmutableIndex(BucketList *bucketList, Collator *collatorPrimaryOnly) |
| : buckets_(bucketList), collatorPrimaryOnly_(collatorPrimaryOnly) {} |
| |
| BucketList *buckets_; |
| Collator *collatorPrimaryOnly_; |
| }; |
| |
| /** |
| * Construct an AlphabeticIndex object for the specified locale. If the locale's |
| * data does not include index characters, a set of them will be |
| * synthesized based on the locale's exemplar characters. The locale |
| * determines the sorting order for both the index characters and the |
| * user item names appearing under each Index character. |
| * |
| * @param locale the desired locale. |
| * @param status Error code, will be set with the reason if the construction |
| * of the AlphabeticIndex object fails. |
| * @stable ICU 4.8 |
| */ |
| AlphabeticIndex(const Locale &locale, UErrorCode &status); |
| |
| /** |
| * Construct an AlphabeticIndex that uses a specific collator. |
| * |
| * The index will be created with no labels; the addLabels() function must be called |
| * after creation to add the desired labels to the index. |
| * |
| * The index adopts the collator, and is responsible for deleting it. |
| * The caller should make no further use of the collator after creating the index. |
| * |
| * @param collator The collator to use to order the contents of this index. |
| * @param status Error code, will be set with the reason if the |
| * operation fails. |
| * @stable ICU 51 |
| */ |
| AlphabeticIndex(RuleBasedCollator *collator, UErrorCode &status); |
| |
| /** |
| * Add Labels to this Index. The labels are additions to those |
| * that are already in the index; they do not replace the existing |
| * ones. |
| * @param additions The additional characters to add to the index, such as A-Z. |
| * @param status Error code, will be set with the reason if the |
| * operation fails. |
| * @return this, for chaining |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &addLabels(const UnicodeSet &additions, UErrorCode &status); |
| |
| /** |
| * Add the index characters from a Locale to the index. The labels |
| * are added to those that are already in the index; they do not replace the |
| * existing index characters. The collation order for this index is not |
| * changed; it remains that of the locale that was originally specified |
| * when creating this Index. |
| * |
| * @param locale The locale whose index characters are to be added. |
| * @param status Error code, will be set with the reason if the |
| * operation fails. |
| * @return this, for chaining |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &addLabels(const Locale &locale, UErrorCode &status); |
| |
| /** |
| * Destructor |
| * @stable ICU 4.8 |
| */ |
| virtual ~AlphabeticIndex(); |
| |
| /** |
| * Builds an immutable, thread-safe version of this instance, without data records. |
| * |
| * @return an immutable index instance |
| * @stable ICU 51 |
| */ |
| ImmutableIndex *buildImmutableIndex(UErrorCode &errorCode); |
| |
| /** |
| * Get the Collator that establishes the ordering of the items in this index. |
| * Ownership of the collator remains with the AlphabeticIndex instance. |
| * |
| * The returned collator is a reference to the internal collator used by this |
| * index. It may be safely used to compare the names of items or to get |
| * sort keys for names. However if any settings need to be changed, |
| * or other non-const methods called, a cloned copy must be made first. |
| * |
| * @return The collator |
| * @stable ICU 4.8 |
| */ |
| virtual const RuleBasedCollator &getCollator() const; |
| |
| |
| /** |
| * Get the default label used for abbreviated buckets <i>between</i> other index characters. |
| * For example, consider the labels when Latin and Greek are used: |
| * X Y Z ... Α Β Γ. |
| * |
| * @return inflow label |
| * @stable ICU 4.8 |
| */ |
| virtual const UnicodeString &getInflowLabel() const; |
| |
| /** |
| * Set the default label used for abbreviated buckets <i>between</i> other index characters. |
| * An inflow label will be automatically inserted if two otherwise-adjacent label characters |
| * are from different scripts, e.g. Latin and Cyrillic, and a third script, e.g. Greek, |
| * sorts between the two. The default inflow character is an ellipsis (...) |
| * |
| * @param inflowLabel the new Inflow label. |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return this |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &setInflowLabel(const UnicodeString &inflowLabel, UErrorCode &status); |
| |
| |
| /** |
| * Get the special label used for items that sort after the last normal label, |
| * and that would not otherwise have an appropriate label. |
| * |
| * @return the overflow label |
| * @stable ICU 4.8 |
| */ |
| virtual const UnicodeString &getOverflowLabel() const; |
| |
| |
| /** |
| * Set the label used for items that sort after the last normal label, |
| * and that would not otherwise have an appropriate label. |
| * |
| * @param overflowLabel the new overflow label. |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return this |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &setOverflowLabel(const UnicodeString &overflowLabel, UErrorCode &status); |
| |
| /** |
| * Get the special label used for items that sort before the first normal label, |
| * and that would not otherwise have an appropriate label. |
| * |
| * @return underflow label |
| * @stable ICU 4.8 |
| */ |
| virtual const UnicodeString &getUnderflowLabel() const; |
| |
| /** |
| * Set the label used for items that sort before the first normal label, |
| * and that would not otherwise have an appropriate label. |
| * |
| * @param underflowLabel the new underflow label. |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return this |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &setUnderflowLabel(const UnicodeString &underflowLabel, UErrorCode &status); |
| |
| |
| /** |
| * Get the limit on the number of labels permitted in the index. |
| * The number does not include over, under and inflow labels. |
| * |
| * @return maxLabelCount maximum number of labels. |
| * @stable ICU 4.8 |
| */ |
| virtual int32_t getMaxLabelCount() const; |
| |
| /** |
| * Set a limit on the number of labels permitted in the index. |
| * The number does not include over, under and inflow labels. |
| * Currently, if the number is exceeded, then every |
| * nth item is removed to bring the count down. |
| * A more sophisticated mechanism may be available in the future. |
| * |
| * @param maxLabelCount the maximum number of labels. |
| * @param status error code |
| * @return This, for chaining |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &setMaxLabelCount(int32_t maxLabelCount, UErrorCode &status); |
| |
| |
| /** |
| * Add a record to the index. Each record will be associated with an index Bucket |
| * based on the record's name. The list of records for each bucket will be sorted |
| * based on the collation ordering of the names in the index's locale. |
| * Records with duplicate names are permitted; they will be kept in the order |
| * that they were added. |
| * |
| * @param name The display name for the Record. The Record will be placed in |
| * a bucket based on this name. |
| * @param data An optional pointer to user data associated with this |
| * item. When iterating the contents of a bucket, both the |
| * data pointer the name will be available for each Record. |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return This, for chaining. |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &addRecord(const UnicodeString &name, const void *data, UErrorCode &status); |
| |
| /** |
| * Remove all Records from the Index. The set of Buckets, which define the headings under |
| * which records are classified, is not altered. |
| * |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return This, for chaining. |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &clearRecords(UErrorCode &status); |
| |
| |
| /** Get the number of labels in this index. |
| * Note: may trigger lazy index construction. |
| * |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return The number of labels in this index, including any under, over or |
| * in-flow labels. |
| * @stable ICU 4.8 |
| */ |
| virtual int32_t getBucketCount(UErrorCode &status); |
| |
| |
| /** Get the total number of Records in this index, that is, the number |
| * of <name, data> pairs added. |
| * |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return The number of records in this index, that is, the total number |
| * of (name, data) items added with addRecord(). |
| * @stable ICU 4.8 |
| */ |
| virtual int32_t getRecordCount(UErrorCode &status); |
| |
| |
| |
| /** |
| * Given the name of a record, return the zero-based index of the Bucket |
| * in which the item should appear. The name need not be in the index. |
| * A Record will not be added to the index by this function. |
| * Bucket numbers are zero-based, in Bucket iteration order. |
| * |
| * @param itemName The name whose bucket position in the index is to be determined. |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return The bucket number for this name. |
| * @stable ICU 4.8 |
| * |
| */ |
| virtual int32_t getBucketIndex(const UnicodeString &itemName, UErrorCode &status); |
| |
| |
| /** |
| * Get the zero based index of the current Bucket from an iteration |
| * over the Buckets of this index. Return -1 if no iteration is in process. |
| * @return the index of the current Bucket |
| * @stable ICU 4.8 |
| */ |
| virtual int32_t getBucketIndex() const; |
| |
| |
| /** |
| * Advance the iteration over the Buckets of this index. Return FALSE if |
| * there are no more Buckets. |
| * |
| * @param status Error code, will be set with the reason if the operation fails. |
| * U_ENUM_OUT_OF_SYNC_ERROR will be reported if the index is modified while |
| * an enumeration of its contents are in process. |
| * |
| * @return TRUE if success, FALSE if at end of iteration |
| * @stable ICU 4.8 |
| */ |
| virtual UBool nextBucket(UErrorCode &status); |
| |
| /** |
| * Return the name of the Label of the current bucket from an iteration over the buckets. |
| * If the iteration is before the first Bucket (nextBucket() has not been called), |
| * or after the last, return an empty string. |
| * |
| * @return the bucket label. |
| * @stable ICU 4.8 |
| */ |
| virtual const UnicodeString &getBucketLabel() const; |
| |
| /** |
| * Return the type of the label for the current Bucket (selected by the |
| * iteration over Buckets.) |
| * |
| * @return the label type. |
| * @stable ICU 4.8 |
| */ |
| virtual UAlphabeticIndexLabelType getBucketLabelType() const; |
| |
| /** |
| * Get the number of <name, data> Records in the current Bucket. |
| * If the current bucket iteration position is before the first label or after the |
| * last, return 0. |
| * |
| * @return the number of Records. |
| * @stable ICU 4.8 |
| */ |
| virtual int32_t getBucketRecordCount() const; |
| |
| |
| /** |
| * Reset the Bucket iteration for this index. The next call to nextBucket() |
| * will restart the iteration at the first label. |
| * |
| * @param status Error code, will be set with the reason if the operation fails. |
| * @return this, for chaining. |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &resetBucketIterator(UErrorCode &status); |
| |
| /** |
| * Advance to the next record in the current Bucket. |
| * When nextBucket() is called, Record iteration is reset to just before the |
| * first Record in the new Bucket. |
| * |
| * @param status Error code, will be set with the reason if the operation fails. |
| * U_ENUM_OUT_OF_SYNC_ERROR will be reported if the index is modified while |
| * an enumeration of its contents are in process. |
| * @return TRUE if successful, FALSE when the iteration advances past the last item. |
| * @stable ICU 4.8 |
| */ |
| virtual UBool nextRecord(UErrorCode &status); |
| |
| /** |
| * Get the name of the current Record. |
| * Return an empty string if the Record iteration position is before first |
| * or after the last. |
| * |
| * @return The name of the current index item. |
| * @stable ICU 4.8 |
| */ |
| virtual const UnicodeString &getRecordName() const; |
| |
| |
| /** |
| * Return the data pointer of the Record currently being iterated over. |
| * Return NULL if the current iteration position before the first item in this Bucket, |
| * or after the last. |
| * |
| * @return The current Record's data pointer. |
| * @stable ICU 4.8 |
| */ |
| virtual const void *getRecordData() const; |
| |
| |
| /** |
| * Reset the Record iterator position to before the first Record in the current Bucket. |
| * |
| * @return This, for chaining. |
| * @stable ICU 4.8 |
| */ |
| virtual AlphabeticIndex &resetRecordIterator(); |
| |
| private: |
| /** |
| * No Copy constructor. |
| * @internal |
| */ |
| AlphabeticIndex(const AlphabeticIndex &other); |
| |
| /** |
| * No assignment. |
| */ |
| AlphabeticIndex &operator =(const AlphabeticIndex & /*other*/) { return *this;}; |
| |
| /** |
| * No Equality operators. |
| * @internal |
| */ |
| virtual UBool operator==(const AlphabeticIndex& other) const; |
| |
| /** |
| * Inequality operator. |
| * @internal |
| */ |
| virtual UBool operator!=(const AlphabeticIndex& other) const; |
| |
| // Common initialization, for use from all constructors. |
| void init(const Locale *locale, UErrorCode &status); |
| |
| /** |
| * This method is called to get the index exemplars. Normally these come from the locale directly, |
| * but if they aren't available, we have to synthesize them. |
| */ |
| void addIndexExemplars(const Locale &locale, UErrorCode &status); |
| /** |
| * Add Chinese index characters from the tailoring. |
| */ |
| UBool addChineseIndexCharacters(UErrorCode &errorCode); |
| |
| UVector *firstStringsInScript(UErrorCode &status); |
| |
| static UnicodeString separated(const UnicodeString &item); |
| |
| /** |
| * Determine the best labels to use. |
| * This is based on the exemplars, but we also process to make sure that they are unique, |
| * and sort differently, and that the overall list is small enough. |
| */ |
| void initLabels(UVector &indexCharacters, UErrorCode &errorCode) const; |
| BucketList *createBucketList(UErrorCode &errorCode) const; |
| void initBuckets(UErrorCode &errorCode); |
| void clearBuckets(); |
| void internalResetBucketIterator(); |
| |
| public: |
| |
| // The Record is declared public only to allow access from |
| // implementation code written in plain C. |
| // It is not intended for public use. |
| |
| #ifndef U_HIDE_INTERNAL_API |
| /** |
| * A (name, data) pair, to be sorted by name into one of the index buckets. |
| * The user data is not used by the index implementation. |
| * @internal |
| */ |
| struct Record: public UMemory { |
| const UnicodeString name_; |
| const void *data_; |
| Record(const UnicodeString &name, const void *data); |
| ~Record(); |
| }; |
| #endif /* U_HIDE_INTERNAL_API */ |
| |
| private: |
| |
| /** |
| * Holds all user records before they are distributed into buckets. |
| * Type of contents is (Record *) |
| * @internal |
| */ |
| UVector *inputList_; |
| |
| int32_t labelsIterIndex_; // Index of next item to return. |
| int32_t itemsIterIndex_; |
| Bucket *currentBucket_; // While an iteration of the index in underway, |
| // point to the bucket for the current label. |
| // NULL when no iteration underway. |
| |
| int32_t maxLabelCount_; // Limit on # of labels permitted in the index. |
| |
| UnicodeSet *initialLabels_; // Initial (unprocessed) set of Labels. Union |
| // of those explicitly set by the user plus |
| // those from locales. Raw values, before |
| // crunching into bucket labels. |
| |
| UVector *firstCharsInScripts_; // The first character from each script, |
| // in collation order. |
| |
| RuleBasedCollator *collator_; |
| RuleBasedCollator *collatorPrimaryOnly_; |
| |
| // Lazy evaluated: null means that we have not built yet. |
| BucketList *buckets_; |
| |
| UnicodeString inflowLabel_; |
| UnicodeString overflowLabel_; |
| UnicodeString underflowLabel_; |
| UnicodeString overflowComparisonString_; |
| |
| UnicodeString emptyString_; |
| }; |
| |
| U_NAMESPACE_END |
| |
| #endif // !UCONFIG_NO_COLLATION |
| #endif |
