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 /*

  ********************************************************************

  * COPYRIGHT:

  * Copyright (c) 1996-2011, International Business Machines Corporation and

  * others. All Rights Reserved.

  ********************************************************************

  */

 #ifndef NORMLZR_H

 #define NORMLZR_H

 #include "unicode/utypes.h"

 /**

  * \file 

  * \brief C++ API: Unicode Normalization

  */

 #if !UCONFIG_NO_NORMALIZATION

 #include "unicode/chariter.h"

 #include "unicode/normalizer2.h"

 #include "unicode/unistr.h"

 #include "unicode/unorm.h"

 #include "unicode/uobject.h"

 U_NAMESPACE_BEGIN

 /**

  * The Normalizer class supports the standard normalization forms described in

  * <a href="http://www.unicode.org/unicode/reports/tr15/" target="unicode">

  * Unicode Standard Annex #15: Unicode Normalization Forms</a>.

  *

  * Note: This API has been replaced by the Normalizer2 class and is only available

  * for backward compatibility. This class simply delegates to the Normalizer2 class.

  * There is one exception: The new API does not provide a replacement for Normalizer::compare().

  *

  * The Normalizer class consists of two parts:

  * - static functions that normalize strings or test if strings are normalized

  * - a Normalizer object is an iterator that takes any kind of text and

  *   provides iteration over its normalized form

  *

  * The Normalizer class is not suitable for subclassing.

  *

  * For basic information about normalization forms and details about the C API

  * please see the documentation in unorm.h.

  *

  * The iterator API with the Normalizer constructors and the non-static functions

  * use a CharacterIterator as input. It is possible to pass a string which

  * is then internally wrapped in a CharacterIterator.

  * The input text is not normalized all at once, but incrementally where needed

  * (providing efficient random access).

  * This allows to pass in a large text but spend only a small amount of time

  * normalizing a small part of that text.

  * However, if the entire text is normalized, then the iterator will be

  * slower than normalizing the entire text at once and iterating over the result.

  * A possible use of the Normalizer iterator is also to report an index into the

  * original text that is close to where the normalized characters come from.

  *

  * <em>Important:</em> The iterator API was cleaned up significantly for ICU 2.0.

  * The earlier implementation reported the getIndex() inconsistently,

  * and previous() could not be used after setIndex(), next(), first(), and current().

  *

  * Normalizer allows to start normalizing from anywhere in the input text by

  * calling setIndexOnly(), first(), or last().

  * Without calling any of these, the iterator will start at the beginning of the text.

  *

  * At any time, next() returns the next normalized code point (UChar32),

  * with post-increment semantics (like CharacterIterator::next32PostInc()).

  * previous() returns the previous normalized code point (UChar32),

  * with pre-decrement semantics (like CharacterIterator::previous32()).

  *

  * current() returns the current code point

  * (respectively the one at the newly set index) without moving

  * the getIndex(). Note that if the text at the current position

  * needs to be normalized, then these functions will do that.

  * (This is why current() is not const.)

  * It is more efficient to call setIndexOnly() instead, which does not

  * normalize.

  *

  * getIndex() always refers to the position in the input text where the normalized

  * code points are returned from. It does not always change with each returned

  * code point.

  * The code point that is returned from any of the functions

  * corresponds to text at or after getIndex(), according to the

  * function's iteration semantics (post-increment or pre-decrement).

  *

  * next() returns a code point from at or after the getIndex()

  * from before the next() call. After the next() call, the getIndex()

  * might have moved to where the next code point will be returned from

  * (from a next() or current() call).

  * This is semantically equivalent to array access with array[index++]

  * (post-increment semantics).

  *

  * previous() returns a code point from at or after the getIndex()

  * from after the previous() call.

  * This is semantically equivalent to array access with array[--index]

  * (pre-decrement semantics).

  *

  * Internally, the Normalizer iterator normalizes a small piece of text

  * starting at the getIndex() and ending at a following "safe" index.

  * The normalized results is stored in an internal string buffer, and

  * the code points are iterated from there.

  * With multiple iteration calls, this is repeated until the next piece

  * of text needs to be normalized, and the getIndex() needs to be moved.

  *

  * The following "safe" index, the internal buffer, and the secondary

  * iteration index into that buffer are not exposed on the API.

  * This also means that it is currently not practical to return to

  * a particular, arbitrary position in the text because one would need to

  * know, and be able to set, in addition to the getIndex(), at least also the

  * current index into the internal buffer.

  * It is currently only possible to observe when getIndex() changes

  * (with careful consideration of the iteration semantics),

  * at which time the internal index will be 0.

  * For example, if getIndex() is different after next() than before it,

  * then the internal index is 0 and one can return to this getIndex()

  * later with setIndexOnly().

  *

  * Note: While the setIndex() and getIndex() refer to indices in the

  * underlying Unicode input text, the next() and previous() methods

  * iterate through characters in the normalized output.

  * This means that there is not necessarily a one-to-one correspondence

  * between characters returned by next() and previous() and the indices

  * passed to and returned from setIndex() and getIndex().

  * It is for this reason that Normalizer does not implement the CharacterIterator interface.

  *

  * @author Laura Werner, Mark Davis, Markus Scherer

  * @stable ICU 2.0

  */

 class U_COMMON_API Normalizer : public UObject {

 public:

   /**

    * If DONE is returned from an iteration function that returns a code point,

    * then there are no more normalization results available.

    * @stable ICU 2.0

    */

   enum {

       DONE=0xffff

   };

   // Constructors

   /**

    * Creates a new <code>Normalizer</code> object for iterating over the

    * normalized form of a given string.

    * <p>

    * @param str   The string to be normalized.  The normalization

    *              will start at the beginning of the string.

    *

    * @param mode  The normalization mode.

    * @stable ICU 2.0

    */

   Normalizer(const UnicodeString& str, UNormalizationMode mode);

   /**

    * Creates a new <code>Normalizer</code> object for iterating over the

    * normalized form of a given string.

    * <p>

    * @param str   The string to be normalized.  The normalization

    *              will start at the beginning of the string.

    *

    * @param length Length of the string, or -1 if NUL-terminated.

    * @param mode  The normalization mode.

    * @stable ICU 2.0

    */

   Normalizer(const UChar* str, int32_t length, UNormalizationMode mode);

   /**

    * Creates a new <code>Normalizer</code> object for iterating over the

    * normalized form of the given text.

    * <p>

    * @param iter  The input text to be normalized.  The normalization

    *              will start at the beginning of the string.

    *

    * @param mode  The normalization mode.

    * @stable ICU 2.0

    */

   Normalizer(const CharacterIterator& iter, UNormalizationMode mode);

   /**

    * Copy constructor.

    * @param copy The object to be copied.

    * @stable ICU 2.0

    */

   Normalizer(const Normalizer& copy);

   /**

    * Destructor

    * @stable ICU 2.0

    */

   virtual ~Normalizer();

   //-------------------------------------------------------------------------

   // Static utility methods

   //-------------------------------------------------------------------------

   /**

    * Normalizes a <code>UnicodeString</code> according to the specified normalization mode.

    * This is a wrapper for unorm_normalize(), using UnicodeString's.

    *

    * The <code>options</code> parameter specifies which optional

    * <code>Normalizer</code> features are to be enabled for this operation.

    *

    * @param source    the input string to be normalized.

    * @param mode      the normalization mode

    * @param options   the optional features to be enabled (0 for no options)

    * @param result    The normalized string (on output).

    * @param status    The error code.

    * @stable ICU 2.0

    */

   static void U_EXPORT2 normalize(const UnicodeString& source,

                         UNormalizationMode mode, int32_t options,

                         UnicodeString& result,

                         UErrorCode &status);

   /**

    * Compose a <code>UnicodeString</code>.

    * This is equivalent to normalize() with mode UNORM_NFC or UNORM_NFKC.

    * This is a wrapper for unorm_normalize(), using UnicodeString's.

    *

    * The <code>options</code> parameter specifies which optional

    * <code>Normalizer</code> features are to be enabled for this operation.

    *

    * @param source    the string to be composed.

    * @param compat    Perform compatibility decomposition before composition.

    *                  If this argument is <code>FALSE</code>, only canonical

    *                  decomposition will be performed.

    * @param options   the optional features to be enabled (0 for no options)

    * @param result    The composed string (on output).

    * @param status    The error code.

    * @stable ICU 2.0

    */

   static void U_EXPORT2 compose(const UnicodeString& source,

                       UBool compat, int32_t options,

                       UnicodeString& result,

                       UErrorCode &status);

   /**

    * Static method to decompose a <code>UnicodeString</code>.

    * This is equivalent to normalize() with mode UNORM_NFD or UNORM_NFKD.

    * This is a wrapper for unorm_normalize(), using UnicodeString's.

    *

    * The <code>options</code> parameter specifies which optional

    * <code>Normalizer</code> features are to be enabled for this operation.

    *

    * @param source    the string to be decomposed.

    * @param compat    Perform compatibility decomposition.

    *                  If this argument is <code>FALSE</code>, only canonical

    *                  decomposition will be performed.

    * @param options   the optional features to be enabled (0 for no options)

    * @param result    The decomposed string (on output).

    * @param status    The error code.

    * @stable ICU 2.0

    */

   static void U_EXPORT2 decompose(const UnicodeString& source,

                         UBool compat, int32_t options,

                         UnicodeString& result,

                         UErrorCode &status);

   /**

    * Performing quick check on a string, to quickly determine if the string is

    * in a particular normalization format.

    * This is a wrapper for unorm_quickCheck(), using a UnicodeString.

    *

    * Three types of result can be returned UNORM_YES, UNORM_NO or

    * UNORM_MAYBE. Result UNORM_YES indicates that the argument

    * string is in the desired normalized format, UNORM_NO determines that

    * argument string is not in the desired normalized format. A

    * UNORM_MAYBE result indicates that a more thorough check is required,

    * the user may have to put the string in its normalized form and compare the

    * results.

    * @param source       string for determining if it is in a normalized format

    * @param mode         normalization format

    * @param status A reference to a UErrorCode to receive any errors

    * @return UNORM_YES, UNORM_NO or UNORM_MAYBE

    *

    * @see isNormalized

    * @stable ICU 2.0

    */

   static inline UNormalizationCheckResult

   quickCheck(const UnicodeString &source, UNormalizationMode mode, UErrorCode &status);

   /**

    * Performing quick check on a string; same as the other version of quickCheck

    * but takes an extra options parameter like most normalization functions.

    *

    * @param source       string for determining if it is in a normalized format

    * @param mode         normalization format

    * @param options      the optional features to be enabled (0 for no options)

    * @param status A reference to a UErrorCode to receive any errors

    * @return UNORM_YES, UNORM_NO or UNORM_MAYBE

    *

    * @see isNormalized

    * @stable ICU 2.6

    */

   static UNormalizationCheckResult

   quickCheck(const UnicodeString &source, UNormalizationMode mode, int32_t options, UErrorCode &status);

   /**

    * Test if a string is in a given normalization form.

    * This is semantically equivalent to source.equals(normalize(source, mode)) .

    *

    * Unlike unorm_quickCheck(), this function returns a definitive result,

    * never a "maybe".

    * For NFD, NFKD, and FCD, both functions work exactly the same.

    * For NFC and NFKC where quickCheck may return "maybe", this function will

    * perform further tests to arrive at a TRUE/FALSE result.

    *

    * @param src        String that is to be tested if it is in a normalization format.

    * @param mode       Which normalization form to test for.

    * @param errorCode  ICU error code in/out parameter.

    *                   Must fulfill U_SUCCESS before the function call.

    * @return Boolean value indicating whether the source string is in the

    *         "mode" normalization form.

    *

    * @see quickCheck

    * @stable ICU 2.2

    */

   static inline UBool

   isNormalized(const UnicodeString &src, UNormalizationMode mode, UErrorCode &errorCode);

   /**

    * Test if a string is in a given normalization form; same as the other version of isNormalized

    * but takes an extra options parameter like most normalization functions.

    *

    * @param src        String that is to be tested if it is in a normalization format.

    * @param mode       Which normalization form to test for.

    * @param options      the optional features to be enabled (0 for no options)

    * @param errorCode  ICU error code in/out parameter.

    *                   Must fulfill U_SUCCESS before the function call.

    * @return Boolean value indicating whether the source string is in the

    *         "mode" normalization form.

    *

    * @see quickCheck

    * @stable ICU 2.6

    */

   static UBool

   isNormalized(const UnicodeString &src, UNormalizationMode mode, int32_t options, UErrorCode &errorCode);

   /**

    * Concatenate normalized strings, making sure that the result is normalized as well.

    *

    * If both the left and the right strings are in

    * the normalization form according to "mode/options",

    * then the result will be

    *

    * \code

    *     dest=normalize(left+right, mode, options)

    * \endcode

    *

    * For details see unorm_concatenate in unorm.h.

    *

    * @param left Left source string.

    * @param right Right source string.

    * @param result The output string.

    * @param mode The normalization mode.

    * @param options A bit set of normalization options.

    * @param errorCode ICU error code in/out parameter.

    *                   Must fulfill U_SUCCESS before the function call.

    * @return result

    *

    * @see unorm_concatenate

    * @see normalize

    * @see unorm_next

    * @see unorm_previous

    *

    * @stable ICU 2.1

    */

   static UnicodeString &

   U_EXPORT2 concatenate(const UnicodeString &left, const UnicodeString &right,

               UnicodeString &result,

               UNormalizationMode mode, int32_t options,

               UErrorCode &errorCode);

   /**

    * Compare two strings for canonical equivalence.

    * Further options include case-insensitive comparison and

    * code point order (as opposed to code unit order).

    *

    * Canonical equivalence between two strings is defined as their normalized

    * forms (NFD or NFC) being identical.

    * This function compares strings incrementally instead of normalizing

    * (and optionally case-folding) both strings entirely,

    * improving performance significantly.

    *

    * Bulk normalization is only necessary if the strings do not fulfill the FCD

    * conditions. Only in this case, and only if the strings are relatively long,

    * is memory allocated temporarily.

    * For FCD strings and short non-FCD strings there is no memory allocation.

    *

    * Semantically, this is equivalent to

    *   strcmp[CodePointOrder](NFD(foldCase(s1)), NFD(foldCase(s2)))

    * where code point order and foldCase are all optional.

    *

    * UAX 21 2.5 Caseless Matching specifies that for a canonical caseless match

    * the case folding must be performed first, then the normalization.

    *

    * @param s1 First source string.

    * @param s2 Second source string.

    *

    * @param options A bit set of options:

    *   - U_FOLD_CASE_DEFAULT or 0 is used for default options:

    *     Case-sensitive comparison in code unit order, and the input strings

    *     are quick-checked for FCD.

    *

    *   - UNORM_INPUT_IS_FCD

    *     Set if the caller knows that both s1 and s2 fulfill the FCD conditions.

    *     If not set, the function will quickCheck for FCD

    *     and normalize if necessary.

    *

    *   - U_COMPARE_CODE_POINT_ORDER

    *     Set to choose code point order instead of code unit order

    *     (see u_strCompare for details).

    *

    *   - U_COMPARE_IGNORE_CASE

    *     Set to compare strings case-insensitively using case folding,

    *     instead of case-sensitively.

    *     If set, then the following case folding options are used.

    *

    *   - Options as used with case-insensitive comparisons, currently:

    *

    *   - U_FOLD_CASE_EXCLUDE_SPECIAL_I

    *    (see u_strCaseCompare for details)

    *

    *   - regular normalization options shifted left by UNORM_COMPARE_NORM_OPTIONS_SHIFT

    *

    * @param errorCode ICU error code in/out parameter.

    *                  Must fulfill U_SUCCESS before the function call.

    * @return <0 or 0 or >0 as usual for string comparisons

    *

    * @see unorm_compare

    * @see normalize

    * @see UNORM_FCD

    * @see u_strCompare

    * @see u_strCaseCompare

    *

    * @stable ICU 2.2

    */

   static inline int32_t

   compare(const UnicodeString &s1, const UnicodeString &s2,

           uint32_t options,

           UErrorCode &errorCode);

   //-------------------------------------------------------------------------

   // Iteration API

   //-------------------------------------------------------------------------

   /**

    * Return the current character in the normalized text.

    * current() may need to normalize some text at getIndex().

    * The getIndex() is not changed.

    *

    * @return the current normalized code point

    * @stable ICU 2.0

    */

   UChar32              current(void);

   /**

    * Return the first character in the normalized text.

    * This is equivalent to setIndexOnly(startIndex()) followed by next().

    * (Post-increment semantics.)

    *

    * @return the first normalized code point

    * @stable ICU 2.0

    */

   UChar32              first(void);

   /**

    * Return the last character in the normalized text.

    * This is equivalent to setIndexOnly(endIndex()) followed by previous().

    * (Pre-decrement semantics.)

    *

    * @return the last normalized code point

    * @stable ICU 2.0

    */

   UChar32              last(void);

   /**

    * Return the next character in the normalized text.

    * (Post-increment semantics.)

    * If the end of the text has already been reached, DONE is returned.

    * The DONE value could be confused with a U+FFFF non-character code point

    * in the text. If this is possible, you can test getIndex()<endIndex()

    * before calling next(), or (getIndex()<endIndex() || last()!=DONE)

    * after calling next(). (Calling last() will change the iterator state!)

    *

    * The C API unorm_next() is more efficient and does not have this ambiguity.

    *

    * @return the next normalized code point

    * @stable ICU 2.0

    */

   UChar32              next(void);

   /**

    * Return the previous character in the normalized text and decrement.

    * (Pre-decrement semantics.)

    * If the beginning of the text has already been reached, DONE is returned.

    * The DONE value could be confused with a U+FFFF non-character code point

    * in the text. If this is possible, you can test

    * (getIndex()>startIndex() || first()!=DONE). (Calling first() will change

    * the iterator state!)

    *

    * The C API unorm_previous() is more efficient and does not have this ambiguity.

    *

    * @return the previous normalized code point

    * @stable ICU 2.0

    */

   UChar32              previous(void);

   /**

    * Set the iteration position in the input text that is being normalized,

    * without any immediate normalization.

    * After setIndexOnly(), getIndex() will return the same index that is

    * specified here.

    *

    * @param index the desired index in the input text.

    * @stable ICU 2.0

    */

   void                 setIndexOnly(int32_t index);

   /**

    * Reset the index to the beginning of the text.

    * This is equivalent to setIndexOnly(startIndex)).

    * @stable ICU 2.0

    */

   void                reset(void);

   /**

    * Retrieve the current iteration position in the input text that is

    * being normalized.

    *

    * A following call to next() will return a normalized code point from

    * the input text at or after this index.

    *

    * After a call to previous(), getIndex() will point at or before the

    * position in the input text where the normalized code point

    * was returned from with previous().

    *

    * @return the current index in the input text

    * @stable ICU 2.0

    */

   int32_t            getIndex(void) const;

   /**

    * Retrieve the index of the start of the input text. This is the begin index

    * of the <code>CharacterIterator</code> or the start (i.e. index 0) of the string

    * over which this <code>Normalizer</code> is iterating.

    *

    * @return the smallest index in the input text where the Normalizer operates

    * @stable ICU 2.0

    */

   int32_t            startIndex(void) const;

   /**

    * Retrieve the index of the end of the input text. This is the end index

    * of the <code>CharacterIterator</code> or the length of the string

    * over which this <code>Normalizer</code> is iterating.

    * This end index is exclusive, i.e., the Normalizer operates only on characters

    * before this index.

    *

    * @return the first index in the input text where the Normalizer does not operate

    * @stable ICU 2.0

    */

   int32_t            endIndex(void) const;

   /**

    * Returns TRUE when both iterators refer to the same character in the same

    * input text.

    *

    * @param that a Normalizer object to compare this one to

    * @return comparison result

    * @stable ICU 2.0

    */

   UBool        operator==(const Normalizer& that) const;

   /**

    * Returns FALSE when both iterators refer to the same character in the same

    * input text.

    *

    * @param that a Normalizer object to compare this one to

    * @return comparison result

    * @stable ICU 2.0

    */

   inline UBool        operator!=(const Normalizer& that) const;

   /**

    * Returns a pointer to a new Normalizer that is a clone of this one.

    * The caller is responsible for deleting the new clone.

    * @return a pointer to a new Normalizer

    * @stable ICU 2.0

    */

   Normalizer*        clone(void) const;

   /**

    * Generates a hash code for this iterator.

    *

    * @return the hash code

    * @stable ICU 2.0

    */

   int32_t                hashCode(void) const;

   //-------------------------------------------------------------------------

   // Property access methods

   //-------------------------------------------------------------------------

   /**

    * Set the normalization mode for this object.

    * <p>

    * <b>Note:</b>If the normalization mode is changed while iterating

    * over a string, calls to {@link #next() } and {@link #previous() } may

    * return previously buffers characters in the old normalization mode

    * until the iteration is able to re-sync at the next base character.

    * It is safest to call {@link #setIndexOnly }, {@link #reset() },

    * {@link #setText }, {@link #first() },

    * {@link #last() }, etc. after calling <code>setMode</code>.

    * <p>

    * @param newMode the new mode for this <code>Normalizer</code>.

    * @see #getUMode

    * @stable ICU 2.0

    */

   void setMode(UNormalizationMode newMode);

   /**

    * Return the normalization mode for this object.

    *

    * This is an unusual name because there used to be a getMode() that

    * returned a different type.

    *

    * @return the mode for this <code>Normalizer</code>

    * @see #setMode

    * @stable ICU 2.0

    */

   UNormalizationMode getUMode(void) const;

   /**

    * Set options that affect this <code>Normalizer</code>'s operation.

    * Options do not change the basic composition or decomposition operation

    * that is being performed, but they control whether

    * certain optional portions of the operation are done.

    * Currently the only available option is obsolete.

    *

    * It is possible to specify multiple options that are all turned on or off.

    *

    * @param   option  the option(s) whose value is/are to be set.

    * @param   value   the new setting for the option.  Use <code>TRUE</code> to

    *                  turn the option(s) on and <code>FALSE</code> to turn it/them off.

    *

    * @see #getOption

    * @stable ICU 2.0

    */

   void setOption(int32_t option,

          UBool value);

   /**

    * Determine whether an option is turned on or off.

    * If multiple options are specified, then the result is TRUE if any

    * of them are set.

    * <p>

    * @param option the option(s) that are to be checked

    * @return TRUE if any of the option(s) are set

    * @see #setOption

    * @stable ICU 2.0

    */

   UBool getOption(int32_t option) const;

   /**

    * Set the input text over which this <code>Normalizer</code> will iterate.

    * The iteration position is set to the beginning.

    *

    * @param newText a string that replaces the current input text

    * @param status a UErrorCode

    * @stable ICU 2.0

    */

   void setText(const UnicodeString& newText,

            UErrorCode &status);

   /**

    * Set the input text over which this <code>Normalizer</code> will iterate.

    * The iteration position is set to the beginning.

    *

    * @param newText a CharacterIterator object that replaces the current input text

    * @param status a UErrorCode

    * @stable ICU 2.0

    */

   void setText(const CharacterIterator& newText,

            UErrorCode &status);

   /**

    * Set the input text over which this <code>Normalizer</code> will iterate.

    * The iteration position is set to the beginning.

    *

    * @param newText a string that replaces the current input text

    * @param length the length of the string, or -1 if NUL-terminated

    * @param status a UErrorCode

    * @stable ICU 2.0

    */

   void setText(const UChar* newText,

                     int32_t length,

             UErrorCode &status);

   /**

    * Copies the input text into the UnicodeString argument.

    *

    * @param result Receives a copy of the text under iteration.

    * @stable ICU 2.0

    */

   void            getText(UnicodeString&  result);

   /**

    * ICU "poor man's RTTI", returns a UClassID for this class.

    * @returns a UClassID for this class.

    * @stable ICU 2.2

    */

   static UClassID U_EXPORT2 getStaticClassID();

   /**

    * ICU "poor man's RTTI", returns a UClassID for the actual class.

    * @return a UClassID for the actual class.

    * @stable ICU 2.2

    */

   virtual UClassID getDynamicClassID() const;

 private:

   //-------------------------------------------------------------------------

   // Private functions

   //-------------------------------------------------------------------------

   Normalizer(); // default constructor not implemented

   Normalizer &operator=(const Normalizer &that); // assignment operator not implemented

   // Private utility methods for iteration

   // For documentation, see the source code

   UBool nextNormalize();

   UBool previousNormalize();

   void    init();

   void    clearBuffer(void);

   //-------------------------------------------------------------------------

   // Private data

   //-------------------------------------------------------------------------

   FilteredNormalizer2*fFilteredNorm2;  // owned if not NULL

   const Normalizer2  *fNorm2;  // not owned; may be equal to fFilteredNorm2

   UNormalizationMode  fUMode;

   int32_t             fOptions;

   // The input text and our position in it

   CharacterIterator  *text;

   // The normalization buffer is the result of normalization

   // of the source in [currentIndex..nextIndex[ .

   int32_t         currentIndex, nextIndex;

   // A buffer for holding intermediate results

   UnicodeString       buffer;

   int32_t         bufferPos;

 };

 //-------------------------------------------------------------------------

 // Inline implementations

 //-------------------------------------------------------------------------

 inline UBool

 Normalizer::operator!= (const Normalizer& other) const

 { return ! operator==(other); }

 inline UNormalizationCheckResult

 Normalizer::quickCheck(const UnicodeString& source,

                        UNormalizationMode mode,

                        UErrorCode &status) {

     return quickCheck(source, mode, 0, status);

 }

 inline UBool

 Normalizer::isNormalized(const UnicodeString& source,

                          UNormalizationMode mode,

                          UErrorCode &status) {

     return isNormalized(source, mode, 0, status);

 }

 inline int32_t

 Normalizer::compare(const UnicodeString &s1, const UnicodeString &s2,

                     uint32_t options,

                     UErrorCode &errorCode) {

   // all argument checking is done in unorm_compare

   return unorm_compare(s1.getBuffer(), s1.length(),

                        s2.getBuffer(), s2.length(),

                        options,

                        &errorCode);

 }

 U_NAMESPACE_END

 #endif /* #if !UCONFIG_NO_NORMALIZATION */

 #endif // NORMLZR_H