icuSources/i18n/fpositer.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 ******************************************************************************
   5 * Copyright (C) 2009-2012, International Business Machines Corporation and
   6 * others. All Rights Reserved.
   7 ******************************************************************************
   8 *   Date        Name        Description
   9 *   12/14/09    doug        Creation.
  10 ******************************************************************************
  11 */
  12
  13 #include "unicode/utypes.h"
  14
  15 #if !UCONFIG_NO_FORMATTING
  16
  17 #include "unicode/fpositer.h"
  18 #include "cmemory.h"
  19 #include "uvectr32.h"
  20
  21 U_NAMESPACE_BEGIN
  22
  23 FieldPositionIterator::~FieldPositionIterator() {
  24   delete data;
  25   data = NULL;
  26   pos = -1;
  27 }
  28
  29 FieldPositionIterator::FieldPositionIterator()
  30     : data(NULL), pos(-1) {
  31 }
  32
  33 FieldPositionIterator::FieldPositionIterator(const FieldPositionIterator &rhs)
  34   : UObject(rhs), data(NULL), pos(rhs.pos) {
  35
  36   if (rhs.data) {
  37     UErrorCode status = U_ZERO_ERROR;
  38     data = new UVector32(status);
  39     data->assign(*rhs.data, status);
  40     if (status != U_ZERO_ERROR) {
  41       delete data;
  42       data = NULL;
  43       pos = -1;
  44     }
  45   }
  46 }
  47
  48 UBool FieldPositionIterator::operator==(const FieldPositionIterator &rhs) const {
  49   if (&rhs == this) {
  50     return TRUE;
  51   }
  52   if (pos != rhs.pos) {
  53     return FALSE;
  54   }
  55   if (!data) {
  56     return rhs.data == NULL;
  57   }
  58   return rhs.data ? data->operator==(*rhs.data) : FALSE;
  59 }
  60
  61 void FieldPositionIterator::setData(UVector32 *adopt, UErrorCode& status) {
  62   // Verify that adopt has valid data, and update status if it doesn't.
  63   if (U_SUCCESS(status)) {
  64     if (adopt) {
  65       if (adopt->size() == 0) {
  66         delete adopt;
  67         adopt = NULL;
  68       } else if ((adopt->size() % 4) != 0) {
  69         status = U_ILLEGAL_ARGUMENT_ERROR;
  70       } else {
  71         for (int i = 2; i < adopt->size(); i += 4) {
  72           if (adopt->elementAti(i) >= adopt->elementAti(i+1)) {
  73             status = U_ILLEGAL_ARGUMENT_ERROR;
  74             break;
  75           }
  76         }
  77       }
  78     }
  79   }
  80
  81   // We own the data, even if status is in error, so we need to delete it now
  82   // if we're not keeping track of it.
  83   if (!U_SUCCESS(status)) {
  84     delete adopt;
  85     return;
  86   }
  87
  88   delete data;
  89   data = adopt;
  90   pos = adopt == NULL ? -1 : 0;
  91 }
  92
  93 UBool FieldPositionIterator::next(FieldPosition& fp) {
  94   if (pos == -1) {
  95     return FALSE;
  96   }
  97
  98   // Ignore the first element of the tetrad: used for field category
  99   pos++;
 100   fp.setField(data->elementAti(pos++));
 101   fp.setBeginIndex(data->elementAti(pos++));
 102   fp.setEndIndex(data->elementAti(pos++));
 103
 104   if (pos == data->size()) {
 105     pos = -1;
 106   }
 107
 108   return TRUE;
 109 }
 110
 111 U_NAMESPACE_END
 112
 113 #endif /* #if !UCONFIG_NO_FORMATTING */
 114