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      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() % 3) != 0) {
     69         status = U_ILLEGAL_ARGUMENT_ERROR;
     70       } else {
     71         for (int i = 1; i < adopt->size(); i += 3) {
     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   fp.setField(data->elementAti(pos++));
     99   fp.setBeginIndex(data->elementAti(pos++));
    100   fp.setEndIndex(data->elementAti(pos++));
    101 
    102   if (pos == data->size()) {
    103     pos = -1;
    104   }
    105 
    106   return TRUE;
    107 }
    108 
    109 U_NAMESPACE_END
    110 
    111 #endif /* #if !UCONFIG_NO_FORMATTING */
    112 
    113