public static ArgumentValidation <T[]> NotEmpty <T>(this ArgumentValidation <T[]> items)
{
if (items.Value.Length == 0)
{
throw new ArgumentNullException(items.ArgumentName);
}
return(items);
}
public static ArgumentValidation <string> NotNullOrWhitespace(this ArgumentValidation <string> item)
{
if (string.IsNullOrWhiteSpace(item.Value))
{
throw new ArgumentNullException(item.ArgumentName);
}
return(item);
}
public static ArgumentValidation <T> IsFalse <T>(
this ArgumentValidation <T> item,
Func <ArgumentValidation <T>, bool> predicate,
string message = "IsFalse evaluated to true")
{
if (predicate.Invoke(item) == true)
{
throw new ArgumentException(message, item.ArgumentName);
}
return(item);
}
public static ArgumentValidation <T> NotNull <T>(this ArgumentValidation <T> item)
{
if (typeof(T).IsClass && item.Value == null)
{
throw new ArgumentNullException(item.ArgumentName);
}
var nullable = Nullable.GetUnderlyingType(typeof(T)) != null;
if (nullable && item.Value == null)
{
throw new ArgumentNullException(item.ArgumentName);
}
return(item);
}
public static ArgumentValidation <T> IsElementTypeAt <T>(
this ArgumentValidation <T> item,
int index,
Type type,
bool isNullValue = true)
where T : IList
{
if (item == null || item.Value == null)
{
throw new ArgumentException(
$"The array for evaluate can not be null",
item.ArgumentName);
}
if (type == null)
{
throw new ArgumentException(
$"The type can not be null",
item.ArgumentName);
}
var element = item.Value[index];
if (!isNullValue && element == null)
{
throw new ArgumentException(
$"IsElementTypeAt({index}) element can not be null value",
item.ArgumentName);
}
if (element.GetType() != type)
{
throw new ArgumentException(
$"IsElementTypeAt({index}) is '{element.GetType().FullName}' and expected '{type.FullName}'",
item.ArgumentName);
}
return(item);
}
