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