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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System.Globalization;
using System.Runtime;
struct SequenceRange
{
// fields
Int64 lower;
Int64 upper;
// constructors
public SequenceRange(Int64 number)
: this(number, number)
{
}
public SequenceRange(Int64 lower, Int64 upper)
{
if (lower < 0)
{
throw Fx.AssertAndThrow("Argument lower cannot be negative.");
}
if (lower > upper)
{
throw Fx.AssertAndThrow("Argument upper cannot be less than argument lower.");
}
this.lower = lower;
this.upper = upper;
}
// properties
public Int64 Lower
{
get { return this.lower; }
}
public Int64 Upper
{
get { return this.upper; }
}
public static bool operator ==(SequenceRange a, SequenceRange b)
{
return (a.lower == b.lower) && (a.upper == b.upper);
}
public static bool operator !=(SequenceRange a, SequenceRange b)
{
return !(a == b);
}
public bool Contains(Int64 number)
{
return (number >= this.lower && number <= this.upper);
}
public bool Contains(SequenceRange range)
{
return (range.Lower >= this.lower && range.Upper <= this.upper);
}
public override bool Equals(object obj)
{
if (obj == null)
{
return false;
}
else if (obj is SequenceRange)
{
return this == (SequenceRange)obj;
}
else
{
return false;
}
}
public override int GetHashCode()
{
Int64 hashCode = (this.upper ^ (this.upper - this.lower));
return (int)((hashCode << 32) ^ (hashCode >> 32));
}
public override string ToString()
{
return string.Format(CultureInfo.InvariantCulture, "{0}-{1}", this.lower, this.upper);
}
}
}
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