/// <summary>
/// Initializes a new instance of the <see cref="IndexerProviderAttribute"/> class.
/// </summary>
/// <param name="providerType">The <see cref="Type"/> of the object to be iterated over</param>
/// <param name="indexType">The <see cref="Type"/> of the index used by <paramref name="providerType"/>.</param>
/// <param name="first">The first index value.</param>
/// <param name="last">The last index value.</param>
/// <param name="iteratorType">The <see cref="Type"/> of the iterator being used to iterate over <paramref name="providerType"/>.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="indexType"/>, <paramref name="iteratorType"/>, <paramref name="first"/>,
/// or <paramref name="last"/> are null.</exception>
/// <exception cref="ArgumentException">Thrown if <paramref name="providerType"/> does not have an index of type <paramref name="indexType"/></exception>
/// <exception cref="ArgumentException">Thrown in <paramref name="first"/> or <paramref name="last"/> are not of type <paramref name="indexType"/></exception>
public IndexerProviderAttribute(
Type providerType,
Type indexType,
Object first,
Object last,
Type iteratorType
)
: base(providerType)
{
if (indexType == null)
{
throw new ArgumentNullException("indexType");
}
if (iteratorType == null)
{
throw new ArgumentNullException("iteratorType");
}
if (!TypeHelper.HasIndexer(this.ProviderType, indexType))
{
throw new ArgumentException(
providerType.Name + " does not have an indexer with index of type "
+ indexType.Name, "indexType");
}
if (first == null)
{
throw new ArgumentNullException("first");
}
if (last == null)
{
throw new ArgumentNullException("last");
}
if (first.GetType() != indexType)
{
throw new ArgumentException("first type does not match indexType");
}
if (last.GetType() != indexType)
{
throw new ArgumentException("first type does not match indexType");
}
this.indexType = indexType;
this.first = first;
this.last = last;
this.iteratorType = iteratorType;
this.iterator = (IBidirectionalIterator)TypeHelper.CreateInstance(this.iteratorType);
}
/// <summary>
/// Default constructor - initializes all fields to default values
/// </summary>
public IndexerProviderAttribute(
Type providerType,
Type indexType,
Object first,
Object last,
Type iteratorType
)
: base(providerType)
{
if (indexType==null)
throw new ArgumentNullException("indexType");
if (iteratorType==null)
throw new ArgumentNullException("iteratorType");
if (!TypeHelper.HasIndexer(this.ProviderType,indexType))
throw new ArgumentException(
providerType.Name + " does not have an indexer with index of type "
+ indexType.Name, "indexType");
if (first==null)
throw new ArgumentNullException("first");
if (last==null)
throw new ArgumentNullException("last");
if (first.GetType()!=indexType)
throw new ArgumentException("first type does not match indexType");
if (last.GetType()!=indexType)
throw new ArgumentException("first type does not match indexType");
this.indexType = indexType;
this.first = first;
this.last = last;
this.iteratorType = iteratorType;
this.iterator = (IBidirectionalIterator)TypeHelper.CreateInstance(this.iteratorType);
}
