icuSources/i18n/fphdlimp.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) 2009-2015, International Business Machines Corporation and
   6 * others. All Rights Reserved.
   7 *******************************************************************************
   8 */
   9
  10 #include "unicode/utypes.h"
  11
  12 #if !UCONFIG_NO_FORMATTING
  13
  14 #include "fphdlimp.h"
  15 #include "uvectr32.h"
  16
  17 U_NAMESPACE_BEGIN
  18
  19 // utility FieldPositionHandler
  20 // base class, null implementation
  21
  22 FieldPositionHandler::~FieldPositionHandler() {
  23 }
  24
  25 void FieldPositionHandler::setShift(int32_t delta) {
  26   fShift = delta;
  27 }
  28
  29
  30 // utility subclass FieldPositionOnlyHandler
  31
  32 FieldPositionOnlyHandler::FieldPositionOnlyHandler(FieldPosition& _pos)
  33   : pos(_pos) {
  34 }
  35
  36 FieldPositionOnlyHandler::~FieldPositionOnlyHandler() {
  37 }
  38
  39 void
  40 FieldPositionOnlyHandler::addAttribute(int32_t id, int32_t start, int32_t limit) {
  41   if (pos.getField() == id) {
  42     pos.setBeginIndex(start + fShift);
  43     pos.setEndIndex(limit + fShift);
  44   }
  45 }
  46
  47 void
  48 FieldPositionOnlyHandler::shiftLast(int32_t delta) {
  49   if (delta != 0 && pos.getField() != FieldPosition::DONT_CARE && pos.getBeginIndex() != -1) {
  50     pos.setBeginIndex(delta + pos.getBeginIndex());
  51     pos.setEndIndex(delta + pos.getEndIndex());
  52   }
  53 }
  54
  55 UBool
  56 FieldPositionOnlyHandler::isRecording(void) const {
  57   return pos.getField() != FieldPosition::DONT_CARE;
  58 }
  59
  60
  61 // utility subclass FieldPositionIteratorHandler
  62
  63 FieldPositionIteratorHandler::FieldPositionIteratorHandler(FieldPositionIterator* posIter,
  64                                                            UErrorCode& _status)
  65     : iter(posIter), vec(NULL), status(_status) {
  66   if (iter && U_SUCCESS(status)) {
  67     vec = new UVector32(status);
  68   }
  69 }
  70
  71 FieldPositionIteratorHandler::~FieldPositionIteratorHandler() {
  72   // setData adopts the vec regardless of status, so it's safe to null it
  73   if (iter) {
  74     iter->setData(vec, status);
  75   }
  76   // if iter is null, we never allocated vec, so no need to free it
  77   vec = NULL;
  78 }
  79
  80 void
  81 FieldPositionIteratorHandler::addAttribute(int32_t id, int32_t start, int32_t limit) {
  82   if (iter && U_SUCCESS(status) && start < limit) {
  83     int32_t size = vec->size();
  84     vec->addElement(id, status);
  85     vec->addElement(start + fShift, status);
  86     vec->addElement(limit + fShift, status);
  87     if (!U_SUCCESS(status)) {
  88       vec->setSize(size);
  89     }
  90   }
  91 }
  92
  93 void
  94 FieldPositionIteratorHandler::shiftLast(int32_t delta) {
  95   if (U_SUCCESS(status) && delta != 0) {
  96     int32_t i = vec->size();
  97     if (i > 0) {
  98       --i;
  99       vec->setElementAt(delta + vec->elementAti(i), i);
 100       --i;
 101       vec->setElementAt(delta + vec->elementAti(i), i);
 102     }
 103   }
 104 }
 105
 106 UBool
 107 FieldPositionIteratorHandler::isRecording(void) const {
 108   return U_SUCCESS(status);
 109 }
 110
 111 U_NAMESPACE_END
 112
 113 #endif /* !UCONFIG_NO_FORMATTING */