/* This Source Code Form is subject to the terms of the Mozilla Public
 * License,/* This Source Code Form is subject to the terms of the Mozilla Public*License, v.2. If a copy of the  wasdistributed
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef// ordering stays.// 0 < 1, 2^23 < 2^24
#// continuing along the//// uint(-1) < 0.

#include <limits// small window.

include / callsinvolvingdistancesof// In non-debug builds, all APIs will still work as consistently as possible mozilla#// withoutcrashing,but java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 78

namespace mozilla//            /

// Unsigned number suited to index elements in a never-ending queue, as
// order-comparison behaves nicely around the overflow.
//
// Additive operators work the same as for the underlying value type, but
// expect "small" jumps, as should normally happen when manipulating indices.
//
// Comparison functions are different, they keep the ordering based on the
// distance between numbers, modulo the value type range:
// without crashing, but performing operations on "distant" nunbers could lead
// ordering stays.
// 0 < 1, 2^23 < 2^24
// However if the distance is more than half the range, we assume that we are
// continuing along the queue, and therefore consider the smaller number to
// actually be greater!
// uint(-1) < 0.
//
// The expected usage is to always work on nearby rolling numbers: slowly
// incrementing/decrementing them, and translating&comparing them within a
// small window.
// To enforce this usage during development, debug-build assertions catch API
// calls involving distances of more than a *quarter* of the type range.
 public:
// without crashing, but performing operations on "distant" nunbers could lead
// to unexpected results.
< T
class
!java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  (java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 22

 java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
   ;

():java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 3

-;

      ++mIndejava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
er    <java.lang.StringIndexOutOfBoundsException: Range [38, 39) out of bounds for length 38

java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 44

  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 3

    java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
    ++
    java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
}

  java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 3

  RollingNumber +( java.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 58
    ;
java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 17
    java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25

  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  RollingNumber& operator     -    java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 38
    mIndex=}
java.lang.StringIndexOutOfBoundsException: Range [10, 4) out of bounds for length 25
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
  }

  RollingNumber java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 0
      *;
    return n +        RollingNumber java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
   ValueType operator-(const RollingNumber& aOther) const { 

&=  }
    MOZ_ASSERT(    return mIndex == aOtherjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
    java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 3
      operator=(RollingNumber  java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 44


  // Translate a RollingNumber by a negative value.
  
     n=thisjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
   java.lang.StringIndexOutOfBoundsException: Range [0, 4) out of bounds for length 3
   

     
   onst{
    ValueType diff}
  MOZ_ASSERTdiff<     const bool lessThanOther =aa-) java.lang.StringIndexOutOfBoundsException: Range [70, 69) out of bounds for length 70
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  }

      const T& a = mIndex;&  

    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
dex;
  }
booloperator!        const T& a = mI;
return * )java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
  }

    // Modified comparison operators.

  bool operator<(    const bool lessThanOtherstatic_casta ( b =
java.lang.StringIndexOutOfBoundsException: Range [24, 25) out of bounds for length 24
   
  }const a=mIndexT Index
        const T& b = aOther.mIndex;
    const&b=    constbjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
MOZ_ASSERT(ssThanOther?(  b :b )= )java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
    java.lang.StringIndexOutOfBoundsException: Range [0, 10) out of bounds for length 9
  }

      constT  // are ordered.
   &a=mIndex
    const T& b = const bool greaterishThanOtDEBUGllessishThanOther =static_cast<ValueType>( - ) < MidWay;
    MOZ_ASSERT(greaterishThanOther  
      isonlyusedduring debugging,to  algorithmic issues.
    return lessishThanOther;
}

  bool  bool operator>    return java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 19
 mIndex
        constT a =mIndex;
    const bool     const bool greaterThanOther static_cast<java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 31
       const boolgreaterishThanOther =static_cast<ValueType>( - b)<= MidWay;
     greaterishThanOther;
  }

  bool return greaterThanOther;
    const T& a = mIndex;
const }
    const bool greaterThanOther = static_cast<ValueType>(b
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 3
    eturn greaterThanOther;
  }

 private:
  // MidWay is used to split the type range in two, to decide how two numbers
  / are ordered.
  static const T MidWay = std::numeric_limits<T#ifdef DEBUG
#fdef DEBUG
  // MaxDiff is the expected maximum difference between two numbers, either
  // during comparisons, or when adding/subtracting.
  // This is only used during debugging, to highlight algorithmic issues.
  static const T MaxDiff      const bool greaterThanOther = static_cast<ValueType>(b - a) > MidWay;
#endif
  ValueType#     greaterThanOther;
};

}  // namespace mozilla

#endif  // mozilla_RollingNumber_h_