/// <param name="type">Type to create.</param>
/// <param name="chainer">Handles callback behavior for child values.</param>
/// <inheritdoc cref="Create(Type,Func{object,bool})"/>
private object Create(Type type, RandomizerChainer chainer)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
(bool, object)result = _hints
.Select(h => h.TryCreate(type, chainer))
.FirstOrDefault(r => r.Item1);
if (!result.Equals(default))
/// <summary>Initializes a new instance of the <see cref="RandomizerChainer"/> class.</summary>
/// <param name="prevChainer">Previous chainer to build upon.</param>
/// <param name="parent">Container of the instance to create.</param>
private RandomizerChainer(RandomizerChainer prevChainer, object parent)
{
Parent = parent;
Gen = prevChainer.Gen;
_faker = prevChainer._faker;
_randomizer = prevChainer._randomizer;
if (parent != null)
{
_history = prevChainer._history
.Append(new KeyValuePair <Type, object>(parent.GetType(), parent))
.ToDictionary(p => p.Key, p => p.Value);
}
else
{
_history = prevChainer._history;
}
}
/// <inheritdoc/>
protected internal sealed override (bool, object) TryCreate(Type type, RandomizerChainer randomizer)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (randomizer == null)
{
throw new ArgumentNullException(nameof(randomizer));
}
if (type.IsInheritedBy <T>() &&
(type != typeof(object) || typeof(T) == typeof(object)) &&
!randomizer.AlreadyCreated <T>())
{
return(true, Create(randomizer));
}
else
{
return(false, null);
}
}
/// <summary>Tries to create a random instance of the given type.</summary> /// <param name="type">Type to generate.</param> /// <param name="randomizer">Handles callback behavior for child values.</param> /// <returns> /// (<c>true</c>, created instance) if successful; /// (<c>false</c>, <c>null</c>) otherwise. /// </returns> protected internal abstract (bool, object) TryCreate(Type type, RandomizerChainer randomizer);
/// <summary>Creates a random <typeparamref name="T"/> instance.</summary> /// <param name="randomizer">Handles callback behavior for child values.</param> /// <returns>The created <typeparamref name="T"/> instance.</returns> protected abstract T Create(RandomizerChainer randomizer);