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iterator.cs
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41 lines (36 loc) · 1.05 KB
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using System;
using System.Collections;
namespace Python.Runtime
{
/// <summary>
/// Implements a generic Python iterator for IEnumerable objects and
/// managed array objects. This supports 'for i in object:' in Python.
/// </summary>
internal class Iterator : ExtensionType
{
private IEnumerator iter;
public Iterator(IEnumerator e)
{
iter = e;
}
/// <summary>
/// Implements support for the Python iteration protocol.
/// </summary>
public static IntPtr tp_iternext(IntPtr ob)
{
var self = GetManagedObject(ob) as Iterator;
if (!self.iter.MoveNext())
{
Exceptions.SetError(Exceptions.StopIteration, Runtime.PyNone);
return IntPtr.Zero;
}
object item = self.iter.Current;
return Converter.ToPythonImplicit(item);
}
public static IntPtr tp_iter(IntPtr ob)
{
Runtime.XIncref(ob);
return ob;
}
}
}