/// <summary>
/// Checks whether the value contained in the IEnsureArg instance is not null. If it is null
/// then an ArgumentNullException will be thrown.
/// </summary>
/// <typeparam name="T">The type of the value contained in the IEnsureArg instance.</typeparam>
/// <param name="ensureArg">
/// The IEnsureArg instance, usually created from an Ensure.Arg() call.
/// </param>
/// <param name="exceptionMessage">
/// Optional exception message to use if the null check fails. This exception message will
/// override the message supplied in the Ensure.Arg() call, if any.
/// </param>
/// <returns>The ensureArg instance.</returns>
/// <exception cref="System.ArgumentNullException">ensureArg.Value is null.</exception>
public static IEnsureArg <T?> IsNotNull <T>(this IEnsureArg <T?> ensureArg, string exceptionMessage = null)
where T : struct
{
ensureArg.ValidateEnsureArgIsNotNull();
if (!ensureArg.Value.HasValue)
{
ensureArg.ThrowArgumentNullException(exceptionMessage);
}
return(ensureArg);
}
/// <summary>
/// Checks whether the value contained in the IEnsureArg instance is not null. If it is null
/// then an ArgumentNullException will be thrown.
/// </summary>
/// <typeparam name="T">The type of the value contained in the IEnsureArg instance.</typeparam>
/// <param name="ensureArg">
/// The IEnsureArg instance, usually created from an Ensure.Arg() call.
/// </param>
/// <param name="exceptionMessage">
/// Optional exception message to use if the null check fails. This exception message will
/// override the message supplied in the Ensure.Arg() call, if any.
/// </param>
/// <returns>The ensureArg instance.</returns>
/// <exception cref="System.ArgumentNullException">ensureArg.Value is null.</exception>
public static IEnsureArg <T> IsNotNull <T>(this IEnsureArg <T> ensureArg, string exceptionMessage = null)
where T : class
{
ensureArg.ValidateEnsureArgIsNotNull();
if (ensureArg.Value == null)
{
ensureArg.ThrowArgumentNullException(exceptionMessage);
}
return(ensureArg);
}