整理

2026-03-23 20:54:41 +08:00
commit e13b3650e9
4596 changed files with 1015768 additions and 0 deletions
--- a/include/boost/mpl/aux_/joint_iter.hpp
+++ b/include/boost/mpl/aux_/joint_iter.hpp
@@ -0,0 +1,120 @@
+
+#ifndef BOOST_MPL_AUX_JOINT_ITER_HPP_INCLUDED
+#define BOOST_MPL_AUX_JOINT_ITER_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2004
+//
+// 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)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id$
+// $Date$
+// $Revision$
+
+#include <boost/mpl/next_prior.hpp>
+#include <boost/mpl/deref.hpp>
+#include <boost/mpl/iterator_tags.hpp>
+#include <boost/mpl/aux_/lambda_spec.hpp>
+#include <boost/mpl/aux_/config/ctps.hpp>
+
+#if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+#   include <boost/type_traits/is_same.hpp>
+#endif
+
+namespace boost { namespace mpl {
+
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+
+template<
+      typename Iterator1
+    , typename LastIterator1
+    , typename Iterator2
+    >
+struct joint_iter
+{
+    typedef Iterator1 base;
+    typedef forward_iterator_tag category;
+};
+
+template<
+      typename LastIterator1
+    , typename Iterator2
+    >
+struct joint_iter<LastIterator1,LastIterator1,Iterator2>
+{
+    typedef Iterator2 base;
+    typedef forward_iterator_tag category;
+};
+
+
+template< typename I1, typename L1, typename I2 >
+struct deref< joint_iter<I1,L1,I2> >
+{
+    typedef typename joint_iter<I1,L1,I2>::base base_;
+    typedef typename deref<base_>::type type;
+};
+
+template< typename I1, typename L1, typename I2 >
+struct next< joint_iter<I1,L1,I2> >
+{
+    typedef joint_iter< typename mpl::next<I1>::type,L1,I2 > type;
+};
+
+template< typename L1, typename I2 >
+struct next< joint_iter<L1,L1,I2> >
+{
+    typedef joint_iter< L1,L1,typename mpl::next<I2>::type > type;
+};
+
+#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+template<
+      typename Iterator1
+    , typename LastIterator1
+    , typename Iterator2
+    >
+struct joint_iter;
+
+template< bool > struct joint_iter_impl
+{
+    template< typename I1, typename L1, typename I2 > struct result_
+    {
+        typedef I1 base;
+        typedef forward_iterator_tag category;
+        typedef joint_iter< typename mpl::next<I1>::type,L1,I2 > next;
+        typedef typename deref<I1>::type type;
+    };
+};
+
+template<> struct joint_iter_impl<true>
+{
+    template< typename I1, typename L1, typename I2 > struct result_
+    {
+        typedef I2 base;
+        typedef forward_iterator_tag category;
+        typedef joint_iter< L1,L1,typename mpl::next<I2>::type > next;
+        typedef typename deref<I2>::type type;
+    };
+};
+
+template<
+      typename Iterator1
+    , typename LastIterator1
+    , typename Iterator2
+    >
+struct joint_iter
+    : joint_iter_impl< is_same<Iterator1,LastIterator1>::value >
+        ::template result_<Iterator1,LastIterator1,Iterator2>
+{
+};
+
+#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(3, joint_iter)
+
+}}
+
+#endif // BOOST_MPL_AUX_JOINT_ITER_HPP_INCLUDED