icdsystems/ICD.Common.Utils
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This commit is contained in:
Chris Cameron
2018-03-12 21:36:36 -04:00
parent 467adc8f3a
commit e806b7c4c2
1 changed files with 11 additions and 1 deletions
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12
ICD.Common.Utils/EnumUtils.cs
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@@ -15,6 +15,7 @@ namespace ICD.Common.Utils
public static class EnumUtils public static class EnumUtils
{ {
private static readonly Dictionary<Type, object[]> s_EnumValuesCache; private static readonly Dictionary<Type, object[]> s_EnumValuesCache;
private static readonly Dictionary<Type, Dictionary<object, object[]>> s_EnumFlagsCache;
/// <summary> /// <summary>
/// Static constructor. /// Static constructor.
@@ -22,6 +23,7 @@ namespace ICD.Common.Utils
static EnumUtils() static EnumUtils()
{ {
s_EnumValuesCache = new Dictionary<Type, object[]>(); s_EnumValuesCache = new Dictionary<Type, object[]>();
s_EnumFlagsCache = new Dictionary<Type, Dictionary<object, object[]>>();
} }
/// <summary> /// <summary>
@@ -276,7 +278,15 @@ namespace ICD.Common.Utils
// ReSharper disable once CompareNonConstrainedGenericWithNull // ReSharper disable once CompareNonConstrainedGenericWithNull
throw new ArgumentException(string.Format("{0} is not an enum", value == null ? "NULL" : value.GetType().Name), "value"); throw new ArgumentException(string.Format("{0} is not an enum", value == null ? "NULL" : value.GetType().Name), "value");
return GetValues<T>().Where(e => HasFlag(value, e)); Type type = typeof(T);
if (!s_EnumFlagsCache.ContainsKey(type))
s_EnumFlagsCache.Add(type, new Dictionary<object, object[]>());
if (!s_EnumFlagsCache[type].ContainsKey(value))
s_EnumFlagsCache[type][value] = GetValues<T>().Where(e => HasFlag(value, e)).Cast<object>().ToArray();
return s_EnumFlagsCache[type][value].Cast<T>();
} }
/// <summary> /// <summary>