using NUnit.Framework.Internal; using System; using System.Runtime.CompilerServices; namespace NUnit.Framework.Constraints.Comparers { internal static class EqualsComparer { [System.Runtime.CompilerServices.NullableContext(1)] public static EqualMethodResult Equal(object x, object y, ref Tolerance tolerance, ComparisonState state, NUnitEqualityComparer equalityComparer) { if (equalityComparer.CompareAsCollection && state.TopLevelComparison) return EqualMethodResult.TypesNotSupported; Type type = x.GetType(); Type type2 = y.GetType(); if (equalityComparer.CompareProperties && (type.HasCompilerGeneratedEquals() || type2.HasCompilerGeneratedEquals())) return EqualMethodResult.TypesNotSupported; bool flag = TypeHelper.OverridesEqualsObject(type); bool flag2 = TypeHelper.OverridesEqualsObject(type2); if (flag | flag2) { if (tolerance.HasVariance) return EqualMethodResult.ToleranceNotSupported; if (!((flag & flag2) ? (x.Equals(y) || y.Equals(x)) : ((!flag) ? y.Equals(x) : x.Equals(y)))) return EqualMethodResult.ComparedNotEqual; return EqualMethodResult.ComparedEqual; } return EqualMethodResult.TypesNotSupported; } } }