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fpositer.h (3103B)

      1 // © 2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4 ********************************************************************************
      5 *   Copyright (C) 2010-2012, International Business Machines
      6 *   Corporation and others.  All Rights Reserved.
      7 ********************************************************************************
      8 *
      9 * File attiter.h
     10 *
     11 * Modification History:
     12 *
     13 *   Date        Name        Description
     14 *   12/15/2009  dougfelt    Created
     15 ********************************************************************************
     16 */
     17 
     18 #ifndef FPOSITER_H
     19 #define FPOSITER_H
     20 
     21 #include "unicode/utypes.h"
     22 
     23 #if U_SHOW_CPLUSPLUS_API
     24 
     25 #include "unicode/uobject.h"
     26 
     27 /**
     28 * \file
     29 * \brief C++ API: FieldPosition Iterator.
     30 */
     31 
     32 #if UCONFIG_NO_FORMATTING
     33 
     34 U_NAMESPACE_BEGIN
     35 
     36 /*
     37 * Allow the declaration of APIs with pointers to FieldPositionIterator
     38 * even when formatting is removed from the build.
     39 */
     40 class FieldPositionIterator;
     41 
     42 U_NAMESPACE_END
     43 
     44 #else
     45 
     46 #include "unicode/fieldpos.h"
     47 #include "unicode/umisc.h"
     48 
     49 U_NAMESPACE_BEGIN
     50 
     51 class UVector32;
     52 
     53 /**
     54 * FieldPositionIterator returns the field ids and their start/limit positions generated
     55 * by a call to Format::format.  See Format, NumberFormat, DecimalFormat.
     56 * @stable ICU 4.4
     57 */
     58 class U_I18N_API FieldPositionIterator : public UObject {
     59 public:
     60    /**
     61     * Destructor.
     62     * @stable ICU 4.4
     63     */
     64    ~FieldPositionIterator();
     65 
     66    /**
     67     * Constructs a new, empty iterator.
     68     * @stable ICU 4.4
     69     */
     70    FieldPositionIterator();
     71 
     72    /**
     73     * Copy constructor.  If the copy failed for some reason, the new iterator will
     74     * be empty.
     75     * @stable ICU 4.4
     76     */
     77    FieldPositionIterator(const FieldPositionIterator&);
     78 
     79    /**
     80     * Return true if another object is semantically equal to this
     81     * one.
     82     * <p>
     83     * Return true if this FieldPositionIterator is at the same position in an
     84     * equal array of run values.
     85     * @stable ICU 4.4
     86     */
     87    bool operator==(const FieldPositionIterator&) const;
     88 
     89    /**
     90     * Returns the complement of the result of operator==
     91     * @param rhs The FieldPositionIterator to be compared for inequality
     92     * @return the complement of the result of operator==
     93     * @stable ICU 4.4
     94     */
     95    bool operator!=(const FieldPositionIterator& rhs) const { return !operator==(rhs); }
     96 
     97    /**
     98     * If the current position is valid, updates the FieldPosition values, advances the iterator,
     99     * and returns true, otherwise returns false.
    100     * @stable ICU 4.4
    101     */
    102    UBool next(FieldPosition& fp);
    103 
    104 private:
    105    /**
    106     * Sets the data used by the iterator, and resets the position.
    107     * Returns U_ILLEGAL_ARGUMENT_ERROR in status if the data is not valid 
    108     * (length is not a multiple of 3, or start >= limit for any run).
    109     */
    110    void setData(UVector32 *adopt, UErrorCode& status);
    111 
    112    friend class FieldPositionIteratorHandler;
    113 
    114    UVector32 *data;
    115    int32_t pos;
    116 };
    117 
    118 U_NAMESPACE_END
    119 
    120 #endif /* #if !UCONFIG_NO_FORMATTING */
    121 
    122 #endif /* U_SHOW_CPLUSPLUS_API */
    123 
    124 #endif // FPOSITER_H