| | | 1 | | using System; |
| | | 2 | | using System.Diagnostics.CodeAnalysis; |
| | | 3 | | |
| | | 4 | | namespace Plainquire.Filter.Abstractions; |
| | | 5 | | |
| | | 6 | | /// <summary> |
| | | 7 | | /// Extension methods for <see cref="Range"/>. |
| | | 8 | | /// </summary> |
| | | 9 | | [SuppressMessage("ReSharper", "MemberCanBePrivate.Global", Justification = "Provided as library, can be used from outsid |
| | | 10 | | public static class RangeExtensions |
| | | 11 | | { |
| | | 12 | | /// <summary> |
| | | 13 | | /// Checks if two <see name="Range{TType}"/> intersects with each other. |
| | | 14 | | /// </summary> |
| | | 15 | | /// <param name="val1">The first of two <see name="Range{TType}"/> to compare.</param> |
| | | 16 | | /// <param name="val2">The second of two <see name="Range{TType}"/> to compare.</param> |
| | | 17 | | public static bool Intersect<TType>(this Range<TType>? val1, Range<TType>? val2) |
| | | 18 | | where TType : IComparable<TType> |
| | | 19 | | { |
| | 37 | 20 | | if (val1 == null || val2 == null) |
| | 3 | 21 | | return false; |
| | | 22 | | |
| | 34 | 23 | | var val1StartIsLowerOrEqualThanVal2End = val1.Start == null || val2.End == null || val1.Start.CompareTo(val2.End |
| | 34 | 24 | | var val2StartIsLowerOrEqualThanVal1End = val2.Start == null || val1.End == null || val2.Start.CompareTo(val1.End |
| | 34 | 25 | | return val1StartIsLowerOrEqualThanVal2End && val2StartIsLowerOrEqualThanVal1End; |
| | | 26 | | } |
| | | 27 | | |
| | | 28 | | /// <summary> |
| | | 29 | | /// Returns the intersected range of two <see name="Range{TType}"/>. |
| | | 30 | | /// </summary> |
| | | 31 | | /// <param name="val1">The first of two <see name="Range{TType}"/> to compare.</param> |
| | | 32 | | /// <param name="val2">The second of two <see name="Range{TType}"/> to compare.</param> |
| | | 33 | | public static Range<TType>? Intersection<TType>(this Range<TType>? val1, Range<TType>? val2) |
| | | 34 | | where TType : IComparable<TType> |
| | | 35 | | { |
| | 11 | 36 | | if (val1 == null) |
| | 2 | 37 | | return val2; |
| | | 38 | | |
| | 9 | 39 | | if (val2 == null) |
| | 1 | 40 | | return val1; |
| | | 41 | | |
| | 8 | 42 | | if (!Intersect(val1, val2)) |
| | 2 | 43 | | return default; |
| | | 44 | | |
| | 6 | 45 | | var start = Max(val1.Start, val2.Start); |
| | 6 | 46 | | var end = Min(val1.End, val2.End); |
| | 6 | 47 | | return new Range<TType>(start, end); |
| | | 48 | | } |
| | | 49 | | |
| | | 50 | | /// <summary> |
| | | 51 | | /// Returns the union range of two <see name="Range{TType}"/>. |
| | | 52 | | /// </summary> |
| | | 53 | | /// <param name="val1">The first of two <see name="Range{TType}"/> to compare.</param> |
| | | 54 | | /// <param name="val2">The second of two <see name="Range{TType}"/> to compare.</param> |
| | | 55 | | public static Range<TType>? Union<TType>(this Range<TType>? val1, Range<TType>? val2) |
| | | 56 | | where TType : IComparable<TType> |
| | | 57 | | { |
| | 11 | 58 | | if (val1 == null) |
| | 2 | 59 | | return val2; |
| | | 60 | | |
| | 9 | 61 | | if (val2 == null) |
| | 1 | 62 | | return val1; |
| | | 63 | | |
| | 8 | 64 | | var start = Min(val1.Start, val2.Start); |
| | 8 | 65 | | var end = Max(val1.End, val2.End); |
| | 8 | 66 | | return new Range<TType>(start, end); |
| | | 67 | | } |
| | | 68 | | |
| | | 69 | | /// <summary> |
| | | 70 | | /// Checks if one <see name="Range{TType}"/> contains another. |
| | | 71 | | /// </summary> |
| | | 72 | | /// <param name="val1">The first of two <see name="Range{TType}"/> to compare.</param> |
| | | 73 | | /// <param name="val2">The second of two <see name="Range{TType}"/> to compare.</param> |
| | | 74 | | public static bool Contains<TType>(this Range<TType>? val1, Range<TType>? val2) |
| | | 75 | | where TType : IComparable<TType> |
| | | 76 | | { |
| | 24 | 77 | | if (val1 == null || val2 == null) |
| | 3 | 78 | | return false; |
| | | 79 | | |
| | 21 | 80 | | var val1StartIsLowerOrEqualThanVal2Start = val1.Start == null || (val2.Start != null && val1.Start.CompareTo(val |
| | 21 | 81 | | var val1EndIsGreaterOrEqualThanVal2End = val1.End == null || (val2.End != null && val1.End.CompareTo(val2.End) > |
| | 21 | 82 | | return val1StartIsLowerOrEqualThanVal2Start && val1EndIsGreaterOrEqualThanVal2End; |
| | | 83 | | } |
| | | 84 | | |
| | | 85 | | /// <summary> |
| | | 86 | | /// Returns the lower of two <typeparamref name="TType"/>. |
| | | 87 | | /// </summary> |
| | | 88 | | /// <param name="val1">The first of two <typeparamref name="TType"/> to compare.</param> |
| | | 89 | | /// <param name="val2">The second of two <typeparamref name="TType"/> to compare.</param> |
| | | 90 | | public static TType? Min<TType>(TType? val1, TType? val2) |
| | | 91 | | where TType : IComparable<TType> |
| | | 92 | | { |
| | 14 | 93 | | if (val1 == null) |
| | 0 | 94 | | return val1; |
| | | 95 | | |
| | 14 | 96 | | if (val2 == null) |
| | 0 | 97 | | return val2; |
| | | 98 | | |
| | 14 | 99 | | return val1.CompareTo(val2) <= 0 ? val1 : val2; |
| | | 100 | | } |
| | | 101 | | |
| | | 102 | | /// <summary> |
| | | 103 | | /// Returns the greater of two <typeparamref name="TType"/>. |
| | | 104 | | /// </summary> |
| | | 105 | | /// <param name="val1">The first of two <typeparamref name="TType"/> to compare.</param> |
| | | 106 | | /// <param name="val2">The second of two <typeparamref name="TType"/> to compare.</param> |
| | | 107 | | public static TType? Max<TType>(TType? val1, TType? val2) |
| | | 108 | | where TType : IComparable<TType> |
| | | 109 | | { |
| | 14 | 110 | | if (val1 == null) |
| | 0 | 111 | | return val2; |
| | | 112 | | |
| | 14 | 113 | | if (val2 == null) |
| | 0 | 114 | | return val1; |
| | | 115 | | |
| | 14 | 116 | | return val1.CompareTo(val2) >= 0 ? val1 : val2; |
| | | 117 | | } |
| | | 118 | | } |