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CrowdControl/Assets/Plugins/UniTask/Runtime/Internal/RuntimeHelpersAbstraction.cs

65 lines
2.1 KiB
C#

#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
using System;
#if UNITY_2018_3_OR_NEWER
using UnityEngine;
#endif
namespace Cysharp.Threading.Tasks.Internal
{
internal static class RuntimeHelpersAbstraction
{
// If we can use RuntimeHelpers.IsReferenceOrContainsReferences(.NET Core 2.0), use it.
public static bool IsWellKnownNoReferenceContainsType<T>()
{
return WellKnownNoReferenceContainsType<T>.IsWellKnownType;
}
static bool WellKnownNoReferenceContainsTypeInitialize(Type t)
{
// The primitive types are Boolean, Byte, SByte, Int16, UInt16, Int32, UInt32, Int64, UInt64, IntPtr, UIntPtr, Char, Double, and Single.
if (t.IsPrimitive) return true;
if (t.IsEnum) return true;
if (t == typeof(DateTime)) return true;
if (t == typeof(DateTimeOffset)) return true;
if (t == typeof(Guid)) return true;
if (t == typeof(decimal)) return true;
// unwrap nullable
if (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>))
{
return WellKnownNoReferenceContainsTypeInitialize(t.GetGenericArguments()[0]);
}
#if UNITY_2018_3_OR_NEWER
// or add other wellknown types(Vector, etc...) here
if (t == typeof(Vector2)) return true;
if (t == typeof(Vector3)) return true;
if (t == typeof(Vector4)) return true;
if (t == typeof(Color)) return true;
if (t == typeof(Rect)) return true;
if (t == typeof(Bounds)) return true;
if (t == typeof(Quaternion)) return true;
if (t == typeof(Vector2Int)) return true;
if (t == typeof(Vector3Int)) return true;
#endif
return false;
}
static class WellKnownNoReferenceContainsType<T>
{
public static readonly bool IsWellKnownType;
static WellKnownNoReferenceContainsType()
{
IsWellKnownType = WellKnownNoReferenceContainsTypeInitialize(typeof(T));
}
}
}
}