public static bool DuckIs <T>(this object instance)
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
return(DuckType.CanCreate <T>(instance));
}
private static void EnsureArguments(Type?proxyType, object?instance)
{
if (proxyType is null)
{
DuckTypeProxyTypeDefinitionIsNull.Throw();
}
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
}
public static bool DuckIs(this object instance, Type targetType)
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
if (targetType != null)
{
return(DuckType.CanCreate(targetType, instance));
}
return(false);
}
public static bool DuckIs <T>(this object instance)
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
if (DuckType.CreateCache <T> .IsVisible)
{
return(DuckType.CanCreate <T>(instance));
}
return(false);
}
/// <summary>
/// Checks and ensures the arguments for the Create methods
/// </summary>
/// <param name="proxyType">Duck type</param>
/// <param name="instance">Instance value</param>
/// <exception cref="ArgumentNullException">If the duck type or the instance value is null</exception>
private static void EnsureArguments(Type proxyType, object instance)
{
if (proxyType is null)
{
DuckTypeProxyTypeDefinitionIsNull.Throw();
}
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
if (!proxyType.IsPublic && !proxyType.IsNestedPublic)
{
DuckTypeTypeIsNotPublicException.Throw(proxyType, nameof(proxyType));
}
}
public static T DuckAs <T>(this object instance)
where T : class
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
DuckType.CreateTypeResult proxyResult = DuckType.CreateCache <T> .GetProxy(instance.GetType());
if (proxyResult.Success)
{
return(proxyResult.CreateInstance <T>(instance));
}
return(null);
}
public static bool TryDuckCast <T>(this object instance, out T value)
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
DuckType.CreateTypeResult proxyResult = DuckType.CreateCache <T> .GetProxy(instance.GetType());
if (proxyResult.Success)
{
value = proxyResult.CreateInstance <T>(instance);
return(true);
}
value = default;
return(false);
}
public static object DuckAs(this object instance, Type targetType)
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
if (targetType != null)
{
DuckType.CreateTypeResult proxyResult = DuckType.GetOrCreateProxyType(targetType, instance.GetType());
if (proxyResult.Success)
{
return(proxyResult.CreateInstance(instance));
}
}
return(null);
}
public static bool TryDuckCast(this object instance, Type targetType, out object value)
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
if (targetType != null)
{
DuckType.CreateTypeResult proxyResult = DuckType.GetOrCreateProxyType(targetType, instance.GetType());
if (proxyResult.Success)
{
value = proxyResult.CreateInstance(instance);
return(true);
}
}
value = default;
return(false);
}
public static bool TryDuckImplement(this object?instance, Type?typeToDeriveFrom, [NotNullWhen(true)] out object?value)
{
if (instance is null)
{
DuckTypeTargetObjectInstanceIsNull.Throw();
}
if (typeToDeriveFrom != null)
{
DuckType.CreateTypeResult proxyResult = DuckType.GetOrCreateReverseProxyType(typeToDeriveFrom, instance.GetType());
if (proxyResult.Success)
{
value = proxyResult.CreateInstance(instance);
return(true);
}
}
value = default;
return(false);
}