private string GetDescription(ValueTypeEqualityImplementations equalsOrHashCode)
{
switch (equalsOrHashCode)
{
case ValueTypeEqualityImplementations.Equals:
return(nameof(Equals));
case ValueTypeEqualityImplementations.GetHashCode:
return(nameof(GetHashCode));
case ValueTypeEqualityImplementations.All:
return($"{nameof(Equals)} and {nameof(GetHashCode)}");
default:
throw new InvalidOperationException($"Invalid value '{equalsOrHashCode}'");
}
}
public static bool HasDefaultEqualsOrHashCodeImplementations(this ITypeSymbol type,
out ValueTypeEqualityImplementations valueTypeEquality)
{
valueTypeEquality = ValueTypeEqualityImplementations.All;
foreach (var member in type.GetMembers())
{
if (member.Name == nameof(Equals) && member.IsOverride)
{
valueTypeEquality &= ~ValueTypeEqualityImplementations.Equals;
}
if (member.Name == nameof(GetHashCode) && member.IsOverride)
{
valueTypeEquality &= ~ValueTypeEqualityImplementations.GetHashCode;
}
}
return(valueTypeEquality != ValueTypeEqualityImplementations.None);
}