37 lines
1.5 KiB
C#
37 lines
1.5 KiB
C#
using System;
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namespace Unity.XR.CoreUtils
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{
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/// <summary>
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/// Utility for dealing with <see cref="System.Guid"/> objects.
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/// </summary>
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public static class GuidUtil
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{
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/// <summary>
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/// Reconstructs a <see cref="Guid"/> from two <see cref="ulong"/> values representing the low and high bytes.
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/// </summary>
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/// <remarks>
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/// Use <see cref="GuidExtensions.Decompose(Guid, out ulong, out ulong)"/> to separate the `Guid`
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/// into its low and high components.
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/// </remarks>
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/// <param name="low">The low 8 bytes of the `Guid`.</param>
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/// <param name="high">The high 8 bytes of the `Guid`.</param>
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/// <returns>The `Guid` composed of <paramref name="low"/> and <paramref name="high"/>.</returns>
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public static Guid Compose(ulong low, ulong high)
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{
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return new Guid(
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(uint)((low & 0x00000000ffffffff) >> 0),
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(ushort)((low & 0x0000ffff00000000) >> 32),
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(ushort)((low & 0xffff000000000000) >> 48),
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(byte)((high & 0x00000000000000ff) >> 0),
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(byte)((high & 0x000000000000ff00) >> 8),
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(byte)((high & 0x0000000000ff0000) >> 16),
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(byte)((high & 0x00000000ff000000) >> 24),
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(byte)((high & 0x000000ff00000000) >> 32),
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(byte)((high & 0x0000ff0000000000) >> 40),
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(byte)((high & 0x00ff000000000000) >> 48),
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(byte)((high & 0xff00000000000000) >> 56));
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}
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}
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}
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