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#Region "Microsoft.VisualBasic::33ec11383a0c1f0680f65f1a9fd7d9d0, Microsoft.VisualBasic.Core\Extensions\Math\Percentage.vb"
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#End Region
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Imports System.Runtime.CompilerServices
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Imports System.Xml.Serialization
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Imports Microsoft.VisualBasic.Scripting.Runtime
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Imports r = System.Text.RegularExpressions.Regex
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Namespace Math
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Public Structure Percentage : Implements IComparable, IFormattable, IConvertible, IComparable(Of [Double]), IEquatable(Of [Double])
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<XmlAttribute> Public Property Numerator As Double
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<XmlAttribute> Public Property Denominator As Double
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<SoapIgnore> Public ReadOnly Property Value As Double
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Get
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If Numerator = 0R Then
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Return 0
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Else
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Return Numerator / Denominator
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End If
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End Get
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End Property
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<SoapIgnore> Public ReadOnly Property FractionExpr As String
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Get
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Return $"{Numerator}/{Denominator}"
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End Get
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End Property
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Sub New(n As Double, d As Double)
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Numerator = n
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Denominator = d
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End Sub
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Public Overrides Function ToString() As String
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Return String.Format("{0}/{1} ({2}%)", Numerator, Denominator, Value)
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End Function
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<param name="Text">``\d+[/]\d+ \(\d+[%]\)``</param>
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Public Shared Function TryParse(Text As String) As Percentage
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If String.IsNullOrEmpty(Text) Then
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Return ZERO
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End If
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Dim matchs$() = r.Matches(Text, "\d+").ToArray
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Dim n As Double = matchs(0).RegexParseDouble
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Dim d As Double = matchs(1).RegexParseDouble
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Return New Percentage With {
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.Numerator = n,
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.Denominator = d
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}
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End Function
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Public Shared ReadOnly Property ZERO As New Percentage(0, 1)
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Public Shared ReadOnly Property One As New Percentage(1, 1)
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Narrowing Operator CType(value As Percentage) As Double
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Return value.Value
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End Operator
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Operator >(value As Percentage, n As Double) As Boolean
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Return value.Value > n
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End Operator
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Shared Operator <(value As Percentage, n As Double) As Boolean
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Return value.Value < n
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End Operator
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#Region "Public Interface"
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Public Function CompareTo(obj As Object) As Integer Implements IComparable.CompareTo
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If obj Is Nothing Then
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Return 1
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End If
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If obj.GetType Is GetType(Double) Then
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Return Value.CompareTo(DirectCast(obj, Double))
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ElseIf obj.GetType Is GetType(Percentage) Then
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Return Value.CompareTo(DirectCast(obj, Percentage).Value)
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Else
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Return 1
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End If
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End Function
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Overloads Function ToString(format As String, formatProvider As IFormatProvider) As String Implements IFormattable.ToString
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Return Value.ToString(format, formatProvider)
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End Function
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#Region "Implements IConvertible"
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Function GetTypeCode() As TypeCode Implements IConvertible.GetTypeCode
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Return TypeCode.Double
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End Function
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Private Function ToBoolean(provider As IFormatProvider) As Boolean Implements IConvertible.ToBoolean
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Throw New NotImplementedException()
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End Function
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Private Function ToChar(provider As IFormatProvider) As Char Implements IConvertible.ToChar
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Throw New NotImplementedException()
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End Function
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Private Function ToSByte(provider As IFormatProvider) As SByte Implements IConvertible.ToSByte
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Throw New NotImplementedException()
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End Function
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Private Function ToByte(provider As IFormatProvider) As Byte Implements IConvertible.ToByte
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Throw New NotImplementedException()
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End Function
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Private Function ToInt16(provider As IFormatProvider) As Short Implements IConvertible.ToInt16
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Throw New NotImplementedException()
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End Function
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Private Function ToUInt16(provider As IFormatProvider) As UShort Implements IConvertible.ToUInt16
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Throw New NotImplementedException()
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End Function
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Private Function ToInt32(provider As IFormatProvider) As Integer Implements IConvertible.ToInt32
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Throw New NotImplementedException()
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End Function
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Private Function ToUInt32(provider As IFormatProvider) As UInteger Implements IConvertible.ToUInt32
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Throw New NotImplementedException()
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End Function
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Private Function ToInt64(provider As IFormatProvider) As Long Implements IConvertible.ToInt64
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Throw New NotImplementedException()
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End Function
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Private Function ToUInt64(provider As IFormatProvider) As ULong Implements IConvertible.ToUInt64
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Throw New NotImplementedException()
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End Function
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Private Function ToSingle(provider As IFormatProvider) As Single Implements IConvertible.ToSingle
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Throw New NotImplementedException()
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End Function
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Private Function ToDouble(provider As IFormatProvider) As Double Implements IConvertible.ToDouble
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Throw New NotImplementedException()
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End Function
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Private Function ToDecimal(provider As IFormatProvider) As Decimal Implements IConvertible.ToDecimal
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Throw New NotImplementedException()
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End Function
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Private Function ToDateTime(provider As IFormatProvider) As Date Implements IConvertible.ToDateTime
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Throw New NotImplementedException()
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End Function
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Overloads Function ToString(provider As IFormatProvider) As String Implements IConvertible.ToString
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Return Value.ToString(provider)
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End Function
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Private Function ToType(conversionType As Type, provider As IFormatProvider) As Object Implements IConvertible.ToType
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Throw New NotImplementedException()
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End Function
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#End Region
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Function CompareTo(other As Double) As Integer Implements IComparable(Of Double).CompareTo
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Return Value.CompareTo(other)
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End Function
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Overloads Function Equals(other As Double) As Boolean Implements IEquatable(Of Double).Equals
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Return Value.Equals(other)
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End Function
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#End Region
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End Structure
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End Namespace
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