File Manager

X7ROOT File Manager

Current Path: /opt/alt/libicu65/usr/include/unicode

opt / alt / libicu65 / usr / include / unicode /

ðŸ“ ..
ðŸ“„ alphaindex.h(26.48 KB)
ðŸ“„ appendable.h(8.49 KB)
ðŸ“„ basictz.h(9.15 KB)
ðŸ“„ brkiter.h(27.8 KB)
ðŸ“„ bytestream.h(9.6 KB)
ðŸ“„ bytestrie.h(20.77 KB)
ðŸ“„ bytestriebuilder.h(7.08 KB)
ðŸ“„ calendar.h(105.74 KB)
ðŸ“„ caniter.h(7.43 KB)
ðŸ“„ casemap.h(25.33 KB)
ðŸ“„ char16ptr.h(7.22 KB)
ðŸ“„ chariter.h(24.05 KB)
ðŸ“„ choicfmt.h(23.91 KB)
ðŸ“„ coleitr.h(13.76 KB)
ðŸ“„ coll.h(56.23 KB)
ðŸ“„ compactdecimalformat.h(6.88 KB)
ðŸ“„ curramt.h(3.76 KB)
ðŸ“„ currpinf.h(7.3 KB)
ðŸ“„ currunit.h(4.05 KB)
ðŸ“„ datefmt.h(40.67 KB)
ðŸ“„ dbbi.h(1.19 KB)
ðŸ“„ dcfmtsym.h(20.13 KB)
ðŸ“„ decimfmt.h(87.38 KB)
ðŸ“„ docmain.h(6.97 KB)
ðŸ“„ dtfmtsym.h(37.7 KB)
ðŸ“„ dtintrv.h(3.84 KB)
ðŸ“„ dtitvfmt.h(46.63 KB)
ðŸ“„ dtitvinf.h(18.51 KB)
ðŸ“„ dtptngen.h(25.08 KB)
ðŸ“„ dtrule.h(8.68 KB)
ðŸ“„ edits.h(20.74 KB)
ðŸ“„ enumset.h(2.08 KB)
ðŸ“„ errorcode.h(4.84 KB)
ðŸ“„ fieldpos.h(8.69 KB)
ðŸ“„ filteredbrk.h(5.37 KB)
ðŸ“„ fmtable.h(24.42 KB)
ðŸ“„ format.h(12.5 KB)
ðŸ“„ formattedvalue.h(10.27 KB)
ðŸ“„ fpositer.h(3.04 KB)
ðŸ“„ gender.h(3.33 KB)
ðŸ“„ gregocal.h(31.71 KB)
ðŸ“„ icudataver.h(1.03 KB)
ðŸ“„ icuplug.h(11.88 KB)
ðŸ“„ idna.h(12.7 KB)
ðŸ“„ listformatter.h(9.47 KB)
ðŸ“„ localebuilder.h(11.27 KB)
ðŸ“„ localematcher.h(22.5 KB)
ðŸ“„ localpointer.h(19.69 KB)
ðŸ“„ locdspnm.h(7.12 KB)
ðŸ“„ locid.h(47.4 KB)
ðŸ“„ measfmt.h(11.33 KB)
ðŸ“„ measunit.h(93.31 KB)
ðŸ“„ measure.h(4.32 KB)
ðŸ“„ messagepattern.h(33.71 KB)
ðŸ“„ msgfmt.h(44.11 KB)
ðŸ“„ normalizer2.h(34.03 KB)
ðŸ“„ normlzr.h(30.94 KB)
ðŸ“„ nounit.h(2.69 KB)
ðŸ“„ numberformatter.h(86.31 KB)
ðŸ“„ numberrangeformatter.h(30.14 KB)
ðŸ“„ numfmt.h(49.81 KB)
ðŸ“„ numsys.h(7.19 KB)
ðŸ“„ parseerr.h(3.08 KB)
ðŸ“„ parsepos.h(5.56 KB)
ðŸ“„ platform.h(28.08 KB)
ðŸ“„ plurfmt.h(25.2 KB)
ðŸ“„ plurrule.h(18.39 KB)
ðŸ“„ ptypes.h(3.49 KB)
ðŸ“„ putil.h(6.33 KB)
ðŸ“„ rbbi.h(26.58 KB)
ðŸ“„ rbnf.h(48.73 KB)
ðŸ“„ rbtz.h(15.6 KB)
ðŸ“„ regex.h(84.36 KB)
ðŸ“„ region.h(9.18 KB)
ðŸ“„ reldatefmt.h(22.62 KB)
ðŸ“„ rep.h(9.37 KB)
ðŸ“„ resbund.h(18.07 KB)
ðŸ“„ schriter.h(6.32 KB)
ðŸ“„ scientificnumberformatter.h(6.4 KB)
ðŸ“„ search.h(22.22 KB)
ðŸ“„ selfmt.h(14.3 KB)
ðŸ“„ simpleformatter.h(12.59 KB)
ðŸ“„ simpletz.h(45.44 KB)
ðŸ“„ smpdtfmt.h(70.97 KB)
ðŸ“„ sortkey.h(11.18 KB)
ðŸ“„ std_string.h(1.05 KB)
ðŸ“„ strenum.h(9.92 KB)
ðŸ“„ stringoptions.h(5.79 KB)
ðŸ“„ stringpiece.h(7.38 KB)
ðŸ“„ stringtriebuilder.h(15.33 KB)
ðŸ“„ stsearch.h(21.3 KB)
ðŸ“„ symtable.h(4.27 KB)
ðŸ“„ tblcoll.h(36.61 KB)
ðŸ“„ timezone.h(41.02 KB)
ðŸ“„ tmunit.h(3.38 KB)
ðŸ“„ tmutamt.h(4.9 KB)
ðŸ“„ tmutfmt.h(7.85 KB)
ðŸ“„ translit.h(65.82 KB)
ðŸ“„ tzfmt.h(42.89 KB)
ðŸ“„ tznames.h(16.85 KB)
ðŸ“„ tzrule.h(35.37 KB)
ðŸ“„ tztrans.h(6.12 KB)
ðŸ“„ ubidi.h(89.56 KB)
ðŸ“„ ubiditransform.h(12.65 KB)
ðŸ“„ ubrk.h(23.97 KB)
ðŸ“„ ucal.h(56.9 KB)
ðŸ“„ ucasemap.h(15.18 KB)
ðŸ“„ ucat.h(5.36 KB)
ðŸ“„ uchar.h(140.56 KB)
ðŸ“„ ucharstrie.h(22.58 KB)
ðŸ“„ ucharstriebuilder.h(7.21 KB)
ðŸ“„ uchriter.h(13.2 KB)
ðŸ“„ uclean.h(11.21 KB)
ðŸ“„ ucnv.h(83.09 KB)
ðŸ“„ ucnv_cb.h(6.59 KB)
ðŸ“„ ucnv_err.h(20.99 KB)
ðŸ“„ ucnvsel.h(6.14 KB)
ðŸ“„ ucol.h(61.46 KB)
ðŸ“„ ucoleitr.h(9.46 KB)
ðŸ“„ uconfig.h(12.07 KB)
ðŸ“„ ucpmap.h(5.53 KB)
ðŸ“„ ucptrie.h(22.46 KB)
ðŸ“„ ucsdet.h(14.67 KB)
ðŸ“„ ucurr.h(16.12 KB)
ðŸ“„ udat.h(60.88 KB)
ðŸ“„ udata.h(15.56 KB)
ðŸ“„ udateintervalformat.h(10.03 KB)
ðŸ“„ udatpg.h(26.01 KB)
ðŸ“„ udisplaycontext.h(5.89 KB)
ðŸ“„ uenum.h(7.78 KB)
ðŸ“„ ufieldpositer.h(4.36 KB)
ðŸ“„ uformattable.h(10.94 KB)
ðŸ“„ uformattedvalue.h(12.14 KB)
ðŸ“„ ugender.h(2 KB)
ðŸ“„ uidna.h(33.37 KB)
ðŸ“„ uiter.h(22.77 KB)
ðŸ“„ uldnames.h(10.45 KB)
ðŸ“„ ulistformatter.h(8.83 KB)
ðŸ“„ uloc.h(52.54 KB)
ðŸ“„ ulocdata.h(11.26 KB)
ðŸ“„ umachine.h(14.53 KB)
ðŸ“„ umisc.h(1.33 KB)
ðŸ“„ umsg.h(24.23 KB)
ðŸ“„ umutablecptrie.h(8.24 KB)
ðŸ“„ unifilt.h(3.96 KB)
ðŸ“„ unifunct.h(4.04 KB)
ðŸ“„ unimatch.h(6.1 KB)
ðŸ“„ unirepl.h(3.38 KB)
ðŸ“„ uniset.h(64.9 KB)
ðŸ“„ unistr.h(170.43 KB)
ðŸ“„ unorm.h(20.52 KB)
ðŸ“„ unorm2.h(24.66 KB)
ðŸ“„ unum.h(53.62 KB)
ðŸ“„ unumberformatter.h(25.36 KB)
ðŸ“„ unumsys.h(7.21 KB)
ðŸ“„ uobject.h(10.68 KB)
ðŸ“„ upluralrules.h(7.88 KB)
ðŸ“„ uregex.h(72.05 KB)
ðŸ“„ uregion.h(9.84 KB)
ðŸ“„ ureldatefmt.h(17.26 KB)
ðŸ“„ urename.h(130.97 KB)
ðŸ“„ urep.h(5.38 KB)
ðŸ“„ ures.h(36.54 KB)
ðŸ“„ uscript.h(26.87 KB)
ðŸ“„ usearch.h(38.12 KB)
ðŸ“„ uset.h(40 KB)
ðŸ“„ usetiter.h(9.55 KB)
ðŸ“„ ushape.h(18 KB)
ðŸ“„ uspoof.h(65.9 KB)
ðŸ“„ usprep.h(8.14 KB)
ðŸ“„ ustdio.h(38.54 KB)
ðŸ“„ ustream.h(1.89 KB)
ðŸ“„ ustring.h(72.47 KB)
ðŸ“„ ustringtrie.h(3.15 KB)
ðŸ“„ utext.h(58.13 KB)
ðŸ“„ utf.h(7.86 KB)
ðŸ“„ utf16.h(23.32 KB)
ðŸ“„ utf32.h(763 B)
ðŸ“„ utf8.h(30.96 KB)
ðŸ“„ utf_old.h(45.83 KB)
ðŸ“„ utmscale.h(13.78 KB)
ðŸ“„ utrace.h(15.73 KB)
ðŸ“„ utrans.h(25.52 KB)
ðŸ“„ utypes.h(30.74 KB)
ðŸ“„ uvernum.h(6.67 KB)
ðŸ“„ uversion.h(6 KB)
ðŸ“„ vtzone.h(20.3 KB)

Editing: edits.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

// edits.h
// created: 2016dec30 Markus W. Scherer

#ifndef __EDITS_H__
#define __EDITS_H__

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

#include "unicode/uobject.h"

/**
 * \file
 * \brief C++ API: C++ class Edits for low-level string transformations on styled text.
 */

U_NAMESPACE_BEGIN

class UnicodeString;

/**
 * Records lengths of string edits but not replacement text. Supports replacements, insertions, deletions
 * in linear progression. Does not support moving/reordering of text.
 *
 * There are two types of edits: change edits and no-change edits. Add edits to
 * instances of this class using {@link #addReplace(int32_t, int32_t)} (for change edits) and
 * {@link #addUnchanged(int32_t)} (for no-change edits). Change edits are retained with full granularity,
 * whereas adjacent no-change edits are always merged together. In no-change edits, there is a one-to-one
 * mapping between code points in the source and destination strings.
 *
 * After all edits have been added, instances of this class should be considered immutable, and an
 * {@link Edits::Iterator} can be used for queries.
 *
 * There are four flavors of Edits::Iterator:
 *
 * <ul>
 * <li>{@link #getFineIterator()} retains full granularity of change edits.
 * <li>{@link #getFineChangesIterator()} retains full granularity of change edits, and when calling
 * next() on the iterator, skips over no-change edits (unchanged regions).
 * <li>{@link #getCoarseIterator()} treats adjacent change edits as a single edit. (Adjacent no-change
 * edits are automatically merged during the construction phase.)
 * <li>{@link #getCoarseChangesIterator()} treats adjacent change edits as a single edit, and when
 * calling next() on the iterator, skips over no-change edits (unchanged regions).
 * </ul>
 *
 * For example, consider the string "abcßDeF", which case-folds to "abcssdef". This string has the
 * following fine edits:
 * <ul>
 * <li>abc ⇨ abc (no-change)
 * <li>ß ⇨ ss (change)
 * <li>D ⇨ d (change)
 * <li>e ⇨ e (no-change)
 * <li>F ⇨ f (change)
 * </ul>
 * and the following coarse edits (note how adjacent change edits get merged together):
 * <ul>
 * <li>abc ⇨ abc (no-change)
 * <li>ßD ⇨ ssd (change)
 * <li>e ⇨ e (no-change)
 * <li>F ⇨ f (change)
 * </ul>
 *
 * The "fine changes" and "coarse changes" iterators will step through only the change edits when their
 * `Edits::Iterator::next()` methods are called. They are identical to the non-change iterators when
 * their `Edits::Iterator::findSourceIndex()` or `Edits::Iterator::findDestinationIndex()`
 * methods are used to walk through the string.
 *
 * For examples of how to use this class, see the test `TestCaseMapEditsIteratorDocs` in
 * UCharacterCaseTest.java.
 *
 * An Edits object tracks a separate UErrorCode, but ICU string transformation functions
 * (e.g., case mapping functions) merge any such errors into their API's UErrorCode.
 *
 * @stable ICU 59
 */
class U_COMMON_API Edits U_FINAL : public UMemory {
public:
 /**
 * Constructs an empty object.
 * @stable ICU 59
 */
 Edits() :
 array(stackArray), capacity(STACK_CAPACITY), length(0), delta(0), numChanges(0),
 errorCode_(U_ZERO_ERROR) {}
 /**
 * Copy constructor.
 * @param other source edits
 * @stable ICU 60
 */
 Edits(const Edits &other) :
 array(stackArray), capacity(STACK_CAPACITY), length(other.length),
 delta(other.delta), numChanges(other.numChanges),
 errorCode_(other.errorCode_) {
 copyArray(other);
 }
 /**
 * Move constructor, might leave src empty.
 * This object will have the same contents that the source object had.
 * @param src source edits
 * @stable ICU 60
 */
 Edits(Edits &&src) U_NOEXCEPT :
 array(stackArray), capacity(STACK_CAPACITY), length(src.length),
 delta(src.delta), numChanges(src.numChanges),
 errorCode_(src.errorCode_) {
 moveArray(src);
 }

/**
     * Destructor.
     * @stable ICU 59
     */
    ~Edits();

/**
     * Assignment operator.
     * @param other source edits
     * @return *this
     * @stable ICU 60
     */
    Edits &operator=(const Edits &other);

/**
     * Move assignment operator, might leave src empty.
     * This object will have the same contents that the source object had.
     * The behavior is undefined if *this and src are the same object.
     * @param src source edits
     * @return *this
     * @stable ICU 60
     */
    Edits &operator=(Edits &&src) U_NOEXCEPT;

/**
     * Resets the data but may not release memory.
     * @stable ICU 59
     */
    void reset() U_NOEXCEPT;

/**
     * Adds a no-change edit: a record for an unchanged segment of text.
     * Normally called from inside ICU string transformation functions, not user code.
     * @stable ICU 59
     */
    void addUnchanged(int32_t unchangedLength);
    /**
     * Adds a change edit: a record for a text replacement/insertion/deletion.
     * Normally called from inside ICU string transformation functions, not user code.
     * @stable ICU 59
     */
    void addReplace(int32_t oldLength, int32_t newLength);
    /**
     * Sets the UErrorCode if an error occurred while recording edits.
     * Preserves older error codes in the outErrorCode.
     * Normally called from inside ICU string transformation functions, not user code.
     * @param outErrorCode Set to an error code if it does not contain one already
     *                  and an error occurred while recording edits.
     *                  Otherwise unchanged.
     * @return TRUE if U_FAILURE(outErrorCode)
     * @stable ICU 59
     */
    UBool copyErrorTo(UErrorCode &outErrorCode) const;

/**
     * How much longer is the new text compared with the old text?
     * @return new length minus old length
     * @stable ICU 59
     */
    int32_t lengthDelta() const { return delta; }
    /**
     * @return TRUE if there are any change edits
     * @stable ICU 59
     */
    UBool hasChanges() const { return numChanges != 0; }

/**
     * @return the number of change edits
     * @stable ICU 60
     */
    int32_t numberOfChanges() const { return numChanges; }

/**
     * Access to the list of edits.
     *
     * At any moment in time, an instance of this class points to a single edit: a "window" into a span
     * of the source string and the corresponding span of the destination string. The source string span
     * starts at {@link #sourceIndex()} and runs for {@link #oldLength()} chars; the destination string
     * span starts at {@link #destinationIndex()} and runs for {@link #newLength()} chars.
     *
     * The iterator can be moved between edits using the `next()`, `findSourceIndex(int32_t, UErrorCode &)`,
     * and `findDestinationIndex(int32_t, UErrorCode &)` methods.
     * Calling any of these methods mutates the iterator to make it point to the corresponding edit.
     *
     * For more information, see the documentation for {@link Edits}.
     *
     * @see getCoarseIterator
     * @see getFineIterator
     * @stable ICU 59
     */
    struct U_COMMON_API Iterator U_FINAL : public UMemory {
        /**
         * Default constructor, empty iterator.
         * @stable ICU 60
         */
        Iterator() :
                array(nullptr), index(0), length(0),
                remaining(0), onlyChanges_(FALSE), coarse(FALSE),
                dir(0), changed(FALSE), oldLength_(0), newLength_(0),
                srcIndex(0), replIndex(0), destIndex(0) {}
        /**
         * Copy constructor.
         * @stable ICU 59
         */
        Iterator(const Iterator &other) = default;
        /**
         * Assignment operator.
         * @stable ICU 59
         */
        Iterator &operator=(const Iterator &other) = default;

/**
         * Advances the iterator to the next edit.
         * @param errorCode ICU error code. Its input value must pass the U_SUCCESS() test,
         *                  or else the function returns immediately. Check for U_FAILURE()
         *                  on output or use with function chaining. (See User Guide for details.)
         * @return TRUE if there is another edit
         * @stable ICU 59
         */
        UBool next(UErrorCode &errorCode) { return next(onlyChanges_, errorCode); }

/**
         * Moves the iterator to the edit that contains the source index.
         * The source index may be found in a no-change edit
         * even if normal iteration would skip no-change edits.
         * Normal iteration can continue from a found edit.
         *
         * The iterator state before this search logically does not matter.
         * (It may affect the performance of the search.)
         *
         * The iterator state after this search is undefined
         * if the source index is out of bounds for the source string.
         *
         * @param i source index
         * @param errorCode ICU error code. Its input value must pass the U_SUCCESS() test,
         *                  or else the function returns immediately. Check for U_FAILURE()
         *                  on output or use with function chaining. (See User Guide for details.)
         * @return TRUE if the edit for the source index was found
         * @stable ICU 59
         */
        UBool findSourceIndex(int32_t i, UErrorCode &errorCode) {
            return findIndex(i, TRUE, errorCode) == 0;
        }

/**
         * Moves the iterator to the edit that contains the destination index.
         * The destination index may be found in a no-change edit
         * even if normal iteration would skip no-change edits.
         * Normal iteration can continue from a found edit.
         *
         * The iterator state before this search logically does not matter.
         * (It may affect the performance of the search.)
         *
         * The iterator state after this search is undefined
         * if the source index is out of bounds for the source string.
         *
         * @param i destination index
         * @param errorCode ICU error code. Its input value must pass the U_SUCCESS() test,
         *                  or else the function returns immediately. Check for U_FAILURE()
         *                  on output or use with function chaining. (See User Guide for details.)
         * @return TRUE if the edit for the destination index was found
         * @stable ICU 60
         */
        UBool findDestinationIndex(int32_t i, UErrorCode &errorCode) {
            return findIndex(i, FALSE, errorCode) == 0;
        }

/**
         * Computes the destination index corresponding to the given source index.
         * If the source index is inside a change edit (not at its start),
         * then the destination index at the end of that edit is returned,
         * since there is no information about index mapping inside a change edit.
         *
         * (This means that indexes to the start and middle of an edit,
         * for example around a grapheme cluster, are mapped to indexes
         * encompassing the entire edit.
         * The alternative, mapping an interior index to the start,
         * would map such an interval to an empty one.)
         *
         * This operation will usually but not always modify this object.
         * The iterator state after this search is undefined.
         *
         * @param i source index
         * @param errorCode ICU error code. Its input value must pass the U_SUCCESS() test,
         *                  or else the function returns immediately. Check for U_FAILURE()
         *                  on output or use with function chaining. (See User Guide for details.)
         * @return destination index; undefined if i is not 0..string length
         * @stable ICU 60
         */
        int32_t destinationIndexFromSourceIndex(int32_t i, UErrorCode &errorCode);

/**
         * Computes the source index corresponding to the given destination index.
         * If the destination index is inside a change edit (not at its start),
         * then the source index at the end of that edit is returned,
         * since there is no information about index mapping inside a change edit.
         *
         * (This means that indexes to the start and middle of an edit,
         * for example around a grapheme cluster, are mapped to indexes
         * encompassing the entire edit.
         * The alternative, mapping an interior index to the start,
         * would map such an interval to an empty one.)
         *
         * This operation will usually but not always modify this object.
         * The iterator state after this search is undefined.
         *
         * @param i destination index
         * @param errorCode ICU error code. Its input value must pass the U_SUCCESS() test,
         *                  or else the function returns immediately. Check for U_FAILURE()
         *                  on output or use with function chaining. (See User Guide for details.)
         * @return source index; undefined if i is not 0..string length
         * @stable ICU 60
         */
        int32_t sourceIndexFromDestinationIndex(int32_t i, UErrorCode &errorCode);

/**
         * Returns whether the edit currently represented by the iterator is a change edit.
         *
         * @return TRUE if this edit replaces oldLength() units with newLength() different ones.
         *         FALSE if oldLength units remain unchanged.
         * @stable ICU 59
         */
        UBool hasChange() const { return changed; }

/**
         * The length of the current span in the source string, which starts at {@link #sourceIndex}.
         *
         * @return the number of units in the original string which are replaced or remain unchanged.
         * @stable ICU 59
         */
        int32_t oldLength() const { return oldLength_; }

/**
         * The length of the current span in the destination string, which starts at
         * {@link #destinationIndex}, or in the replacement string, which starts at
         * {@link #replacementIndex}.
         *
         * @return the number of units in the modified string, if hasChange() is TRUE.
         *         Same as oldLength if hasChange() is FALSE.
         * @stable ICU 59
         */
        int32_t newLength() const { return newLength_; }

/**
         * The start index of the current span in the source string; the span has length
         * {@link #oldLength}.
         *
         * @return the current index into the source string
         * @stable ICU 59
         */
        int32_t sourceIndex() const { return srcIndex; }

/**
         * The start index of the current span in the replacement string; the span has length
         * {@link #newLength}. Well-defined only if the current edit is a change edit.
         *
         * The *replacement string* is the concatenation of all substrings of the destination
         * string corresponding to change edits.
         *
         * This method is intended to be used together with operations that write only replacement
         * characters (e.g. operations specifying the \ref U_OMIT_UNCHANGED_TEXT option).
         * The source string can then be modified in-place.
         *
         * @return the current index into the replacement-characters-only string,
         *         not counting unchanged spans
         * @stable ICU 59
         */
        int32_t replacementIndex() const {
            // TODO: Throw an exception if we aren't in a change edit?
            return replIndex;
        }

/**
         * The start index of the current span in the destination string; the span has length
         * {@link #newLength}.
         *
         * @return the current index into the full destination string
         * @stable ICU 59
         */
        int32_t destinationIndex() const { return destIndex; }

#ifndef U_HIDE_INTERNAL_API
        /**
         * A string representation of the current edit represented by the iterator for debugging. You
         * should not depend on the contents of the return string.
         * @internal
         */
        UnicodeString& toString(UnicodeString& appendTo) const;
#endif  // U_HIDE_INTERNAL_API

private:
        friend class Edits;

Iterator(const uint16_t *a, int32_t len, UBool oc, UBool crs);

int32_t readLength(int32_t head);
 void updateNextIndexes();
 void updatePreviousIndexes();
 UBool noNext();
 UBool next(UBool onlyChanges, UErrorCode &errorCode);
 UBool previous(UErrorCode &errorCode);
 /** @return -1: error or i<0; 0: found; 1: i>=string length */
 int32_t findIndex(int32_t i, UBool findSource, UErrorCode &errorCode);

const uint16_t *array;
        int32_t index, length;
        // 0 if we are not within compressed equal-length changes.
        // Otherwise the number of remaining changes, including the current one.
        int32_t remaining;
        UBool onlyChanges_, coarse;

int8_t dir; // iteration direction: back(<0), initial(0), forward(>0)
 UBool changed;
 int32_t oldLength_, newLength_;
 int32_t srcIndex, replIndex, destIndex;
 };

/**
     * Returns an Iterator for coarse-grained change edits
     * (adjacent change edits are treated as one).
     * Can be used to perform simple string updates.
     * Skips no-change edits.
     * @return an Iterator that merges adjacent changes.
     * @stable ICU 59
     */
    Iterator getCoarseChangesIterator() const {
        return Iterator(array, length, TRUE, TRUE);
    }

/**
     * Returns an Iterator for coarse-grained change and no-change edits
     * (adjacent change edits are treated as one).
     * Can be used to perform simple string updates.
     * Adjacent change edits are treated as one edit.
     * @return an Iterator that merges adjacent changes.
     * @stable ICU 59
     */
    Iterator getCoarseIterator() const {
        return Iterator(array, length, FALSE, TRUE);
    }

/**
     * Returns an Iterator for fine-grained change edits
     * (full granularity of change edits is retained).
     * Can be used for modifying styled text.
     * Skips no-change edits.
     * @return an Iterator that separates adjacent changes.
     * @stable ICU 59
     */
    Iterator getFineChangesIterator() const {
        return Iterator(array, length, TRUE, FALSE);
    }

/**
     * Returns an Iterator for fine-grained change and no-change edits
     * (full granularity of change edits is retained).
     * Can be used for modifying styled text.
     * @return an Iterator that separates adjacent changes.
     * @stable ICU 59
     */
    Iterator getFineIterator() const {
        return Iterator(array, length, FALSE, FALSE);
    }

/**
 * Merges the two input Edits and appends the result to this object.
 *
 * Consider two string transformations (for example, normalization and case mapping)
 * where each records Edits in addition to writing an output string. 
 * Edits ab reflect how substrings of input string a
 * map to substrings of intermediate string b. 
 * Edits bc reflect how substrings of intermediate string b
 * map to substrings of output string c. 
 * This function merges ab and bc such that the additional edits
 * recorded in this object reflect how substrings of input string a
 * map to substrings of output string c.
 *
 * If unrelated Edits are passed in where the output string of the first
 * has a different length than the input string of the second,
 * then a U_ILLEGAL_ARGUMENT_ERROR is reported.
 *
 * @param ab reflects how substrings of input string a
 * map to substrings of intermediate string b.
 * @param bc reflects how substrings of intermediate string b
 * map to substrings of output string c.
 * @param errorCode ICU error code. Its input value must pass the U_SUCCESS() test,
 * or else the function returns immediately. Check for U_FAILURE()
 * on output or use with function chaining. (See User Guide for details.)
 * @return *this, with the merged edits appended
 * @stable ICU 60
 */
 Edits &mergeAndAppend(const Edits &ab, const Edits &bc, UErrorCode &errorCode);

private:
    void releaseArray() U_NOEXCEPT;
    Edits &copyArray(const Edits &other);
    Edits &moveArray(Edits &src) U_NOEXCEPT;

void setLastUnit(int32_t last) { array[length - 1] = (uint16_t)last; }
    int32_t lastUnit() const { return length > 0 ? array[length - 1] : 0xffff; }

void append(int32_t r);
    UBool growArray();

static const int32_t STACK_CAPACITY = 100;
    uint16_t *array;
    int32_t capacity;
    int32_t length;
    int32_t delta;
    int32_t numChanges;
    UErrorCode errorCode_;
    uint16_t stackArray[STACK_CAPACITY];
};

U_NAMESPACE_END

#endif /* U_SHOW_CPLUSPLUS_API */

#endif  // __EDITS_H__

X7ROOT File Manager

Editing: edits.h

Upload File

Create Folder