icuSources/i18n/significantdigitinterval.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 *******************************************************************************
   5 * Copyright (C) 2015, International Business Machines
   6 * Corporation and others.  All Rights Reserved.
   7 *******************************************************************************
   8 * significantdigitinterval.h
   9 *
  10 * created on: 2015jan6
  11 * created by: Travis Keep
  12 */
  13
  14 #ifndef __SIGNIFICANTDIGITINTERVAL_H__
  15 #define __SIGNIFICANTDIGITINTERVAL_H__
  16
  17 #include "unicode/uobject.h"
  18 #include "unicode/utypes.h"
  19
  20 U_NAMESPACE_BEGIN
  21
  22 /**
  23  * An interval of allowed significant digit counts.
  24  */
  25 class U_I18N_API SignificantDigitInterval : public UMemory {
  26 public:
  27
  28     /**
  29      * No limits on significant digits.
  30      */
  31     SignificantDigitInterval()
  32             : fMax(INT32_MAX), fMin(0) { }
  33
  34     /**
  35      * Make this instance have no limit on significant digits.
  36      */
  37     void clear() {
  38         fMin = 0;
  39         fMax = INT32_MAX;
  40     }
  41
  42     /**
  43      * Returns TRUE if this object is equal to rhs.
  44      */
  45     UBool equals(const SignificantDigitInterval &rhs) const {
  46         return ((fMax == rhs.fMax) && (fMin == rhs.fMin));
  47     }
  48
  49     /**
  50      * Sets maximum significant digits. 0 or negative means no maximum.
  51      */
  52     void setMax(int32_t count) {
  53         fMax = count <= 0 ? INT32_MAX : count;
  54     }
  55
  56     /**
  57      * Get maximum significant digits. INT32_MAX means no maximum.
  58      */
  59     int32_t getMax() const {
  60         return fMax;
  61     }
  62
  63     /**
  64      * Sets minimum significant digits. 0 or negative means no minimum.
  65      */
  66     void setMin(int32_t count) {
  67         fMin = count <= 0 ? 0 : count;
  68     }
  69
  70     /**
  71      * Get maximum significant digits. 0 means no minimum.
  72      */
  73     int32_t getMin() const {
  74         return fMin;
  75     }
  76
  77     /**
  78      * Returns TRUE if this instance represents no constraints on significant
  79      * digits.
  80      */
  81     UBool isNoConstraints() const {
  82         return fMin == 0 && fMax == INT32_MAX;
  83     }
  84
  85 private:
  86     int32_t fMax;
  87     int32_t fMin;
  88 };
  89
  90 U_NAMESPACE_END
  91
  92 #endif  // __SIGNIFICANTDIGITINTERVAL_H__