1 /*

     2 **********************************************************************

     3 *   Copyright (C) 1999-2000 IBM Corp. All rights reserved.

     4 **********************************************************************

     5 *   Date        Name        Description

     6 *   12/1/99    rgillam     Complete port from Java.

     7 *   01/13/2000 helena      Added UErrorCode to ctors.

     8 **********************************************************************

     9 */

    10 

    11 #ifndef DBBI_TBL_H

    12 #define DBBI_TBL_H

    13 

    14 #include "unicode/utypes.h"

    15 #include "unicode/uobject.h"

    16 #include "unicode/udata.h"

    17 #include "brkdict.h"

    18 

    19 U_NAMESPACE_BEGIN

    20 

    21 /* forward declaration */

    22 class DictionaryBasedBreakIterator;

    23 

    24 //

    25 //   DictionaryBasedBreakIteratorTables

    26 //

    27 //        This class sits between instances of DictionaryBasedBreakIterator

    28 //        and the dictionary data itself,  which is of type BreakDictionary.

    29 //        It provides reference counting, allowing multiple copies of a

    30 //        DictionaryBasedBreakIterator to share a single instance of

    31 //        BreakDictionary.

    32 //

    33 //        TODO:  it'd probably be cleaner to add the reference counting to

    34 //        BreakDictionary and get rid of this class, but doing it this way

    35 //        was a convenient transition from earlier code, and time is short...

    36 //

    37 class DictionaryBasedBreakIteratorTables : public UMemory {

    38 

    39 private:

    40     int32_t      fRefCount;

    41 

    42 

    43 public:

    44     //=======================================================================

    45     // constructor

    46     //=======================================================================

    47     /* @param dictionaryFilename The name of the dictionary file

    48      * @param status The error code

    49      * @return the newly created DictionaryBasedBreakIteratorTables

    50      **/

    51     DictionaryBasedBreakIteratorTables(const char*       dictionaryFilename,

    52                                              UErrorCode& status);

    53 

    54     BreakDictionary    *fDictionary;

    55     void addReference();

    56     void removeReference();

    57     /**

    58      * Destructor.  Should not be used directly.  Use removeReference() istead.

    59      *              (Not private to avoid compiler warnings.)

    60      */

    61     virtual ~DictionaryBasedBreakIteratorTables();

    62 

    63 private:

    64     /**

    65      * The copy constructor is declared private and not implemented.

    66      * THIS CLASS MAY NOT BE COPIED.

    67      * @param that The DictionaryBasedBreakIteratorTables to be copied.

    68      * @return the newly constructed DictionaryBasedBreakIteratorTables.

    69      */

    70     DictionaryBasedBreakIteratorTables(const DictionaryBasedBreakIteratorTables& that);

    71 

    72     //=======================================================================

    73     // boilerplate

    74     //=======================================================================

    75 

    76 

    77     /**

    78      * The assignment operator is declared private and not implemented.

    79      * THIS CLASS MAY NOT BE COPIED.

    80      * Call addReference() and share an existing copy instead.

    81      * @that The object to be copied

    82      * @return the newly created  DictionaryBasedBreakIteratorTables.

    83      */

    84     DictionaryBasedBreakIteratorTables& operator=(

    85             const DictionaryBasedBreakIteratorTables& that);

    86 };

    87 

    88 U_NAMESPACE_END

    89 

    90 #endif