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Added GetUniqueValues

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Ell 2024-08-09 22:37:42 +02:00
parent 6305ee9d8c
commit c57f9fdbf6
3 changed files with 56 additions and 1 deletions
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17
DynamicEnums/DynamicEnum.cs
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@ -200,6 +200,23 @@ namespace DynamicEnums {
return DynamicEnum.GetValues(typeof(T)).Cast<T>();
}
/// <summary>
/// Returns a collection of all of the enum values that are explicitly defined for the given dynamic enum type <typeparamref name="T"/>, excluding any explicitly defined combined flags.
/// A value counts as explicitly defined if it has been added using <see cref="Add{T}"/>, <see cref="AddValue{T}"/> or <see cref="AddFlag{T}"/>.
/// </summary>
/// <typeparam name="T">The type whose values to get.</typeparam>
/// <returns>The defined values for the given type, excluding combined flags.</returns>
public static IEnumerable<T> GetUniqueValues<T>() where T : DynamicEnum {
var used = BigInteger.Zero;
foreach (var value in DynamicEnum.GetValues<T>()) {
var iValue = DynamicEnum.GetValue(value);
if ((used & iValue) == 0) {
yield return value;
used |= iValue;
}
}
}
/// <summary>
/// Returns a collection of all of the enum values that are explicitly defined for the given dynamic enum type <paramref name="type"/>.
/// A value counts as explicitly defined if it has been added using <see cref="Add{T}"/>, <see cref="AddValue{T}"/> or <see cref="AddFlag{T}"/>.

16
DynamicEnums/EnumHelper.cs
View file

@ -21,6 +21,22 @@ namespace DynamicEnums {
#endif
}
/// <summary>
/// Returns an array containing all of the values of the given enum type, excluding any explicitly defined combined flags.
/// </summary>
/// <typeparam name="T">The type whose enum to get.</typeparam>
/// <returns>An enumerable of the values of the enum, in declaration order, excluding combined flags.</returns>
public static IEnumerable<T> GetUniqueValues<T>() where T : struct, Enum {
var used = 0L;
foreach (var value in EnumHelper.GetValues<T>()) {
var lValue = Convert.ToInt64(value);
if ((used & lValue) == 0) {
yield return value;
used |= lValue;
}
}
}
/// <summary>
/// Returns true if the given <paramref name="value"/> has all of the given <see cref="Enum"/> flags on it.
/// This operation is equivalent to <see cref="Enum.HasFlag"/>, but doesn't do any additional checks, making it faster.

24
Tests/EnumTests.cs
View file

@ -1,4 +1,5 @@
using System;
using System.Linq;
using System.Numerics;
using DynamicEnums;
using NUnit.Framework;
@ -9,8 +10,18 @@ public class EnumTests {
[Test]
public void TestRegularEnums() {
Assert.AreEqual(
new[] {TestEnum.Zero, TestEnum.One, TestEnum.Two, TestEnum.Eight, TestEnum.Sixteen, TestEnum.EightSixteen, TestEnum.ThirtyTwo, TestEnum.OneTwentyEight, TestEnum.OneTwentyEightTwoOne},
EnumHelper.GetValues<TestEnum>());
Assert.AreEqual(
new[] {TestEnum.Zero, TestEnum.One, TestEnum.Two, TestEnum.Eight, TestEnum.Sixteen, TestEnum.ThirtyTwo, TestEnum.OneTwentyEight},
EnumHelper.GetUniqueValues<TestEnum>());
Assert.AreEqual(
new[] {TestEnum.One, TestEnum.Two, TestEnum.Eight, TestEnum.Sixteen, TestEnum.EightSixteen},
EnumHelper.GetFlags(TestEnum.One | TestEnum.Sixteen | TestEnum.Eight | TestEnum.Two, false));
Assert.AreEqual(
new[] {TestEnum.Zero, TestEnum.One, TestEnum.Two, TestEnum.Eight, TestEnum.Sixteen, TestEnum.EightSixteen},
EnumHelper.GetFlags(TestEnum.One | TestEnum.Sixteen | TestEnum.Eight | TestEnum.Two));
Assert.AreEqual(
@ -35,9 +46,16 @@ public class EnumTests {
var zero = DynamicEnum.Add<TestDynamicEnum>("Zero", 0);
var combined = DynamicEnum.Add<TestDynamicEnum>("Combined", DynamicEnum.GetValue(DynamicEnum.Or(flags[7], flags[13])));
DynamicEnum.Add<TestEnumWithConstructor>("Test", 10);
var test = DynamicEnum.Add<TestEnumWithConstructor>("Test", 10);
Assert.AreEqual(DynamicEnum.GetEnumValue<TestEnumWithConstructor>(10).ToString(), "TestModified");
Assert.AreEqual(
flags.Append(zero).Append(combined),
DynamicEnum.GetValues<TestDynamicEnum>());
Assert.AreEqual(
flags.Append(zero),
DynamicEnum.GetUniqueValues<TestDynamicEnum>());
Assert.AreEqual(DynamicEnum.GetValue(flags[7]), BigInteger.One << 7);
Assert.AreEqual(DynamicEnum.GetEnumValue<TestDynamicEnum>(BigInteger.One << 75), flags[75]);
@ -73,6 +91,9 @@ public class EnumTests {
Assert.AreEqual(
new[] {flags[0], flags[7], flags[13], combined},
DynamicEnum.GetFlags(DynamicEnum.Or(DynamicEnum.Or(flags[0], flags[13]), flags[7]), false));
Assert.AreEqual(
new[] {flags[0], flags[7], flags[13], zero, combined},
DynamicEnum.GetFlags(DynamicEnum.Or(DynamicEnum.Or(flags[0], flags[13]), flags[7])));
Assert.AreEqual(
new[] {flags[0], flags[7], flags[13]},
@ -82,6 +103,7 @@ public class EnumTests {
[Flags]
private enum TestEnum {
Zero = 0,
One = 1,
Two = 2,
Eight = 8,