tests and docs for stl_input_iterator

[SVN r31514]

src/object/stl_iterator.cpp

@@ -0,0 +1,42 @@
+// Copyright Eric Niebler 2005.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/python/object.hpp>
+#include <boost/python/handle.hpp>
+#include <boost/python/object/stl_iterator_core.hpp>
+
+namespace boost { namespace python { namespace objects
+{ 
+
+stl_input_iterator_impl::stl_input_iterator_impl()
+  : it_()
+  , ob_()
+{
+}
+
+stl_input_iterator_impl::stl_input_iterator_impl(boost::python::object const &ob)
+  : it_(ob.attr("__iter__")())
+  , ob_()
+{
+    this->increment();
+}
+
+void stl_input_iterator_impl::increment()
+{
+    this->ob_ = boost::python::handle<>(
+        boost::python::allow_null(PyIter_Next(this->it_.ptr())));
+}
+
+bool stl_input_iterator_impl::equal(stl_input_iterator_impl const &that) const
+{
+    return !this->ob_ == !that.ob_;
+}
+
+boost::python::handle<> const &stl_input_iterator_impl::current() const
+{
+    return this->ob_;
+}
+
+}}} // namespace boost::python::objects