public override IPermission Intersect(IPermission target)
{
DataProtectionPermission dp = Cast(target);
if (dp == null)
{
return(null);
}
if (this.IsUnrestricted() && dp.IsUnrestricted())
{
return(new DataProtectionPermission(PermissionState.Unrestricted));
}
if (this.IsUnrestricted())
{
return(dp.Copy());
}
if (dp.IsUnrestricted())
{
return(this.Copy());
}
return(new DataProtectionPermission(_flags & dp._flags));
}
public override IPermission Union(IPermission target)
{
DataProtectionPermission dp = Cast(target);
if (dp == null)
{
return(this.Copy());
}
if (this.IsUnrestricted() || dp.IsUnrestricted())
{
return(new SecurityPermission(PermissionState.Unrestricted));
}
return(new DataProtectionPermission(_flags | dp._flags));
}
public override bool IsSubsetOf(IPermission target)
{
DataProtectionPermission dp = Cast(target);
if (dp == null)
{
return(_flags == DataProtectionPermissionFlags.NoFlags);
}
if (dp.IsUnrestricted())
{
return(true);
}
if (this.IsUnrestricted())
{
return(false);
}
return((_flags & ~dp._flags) == 0);
}