Imported from /home/lorry/working-area/delta_boost-tarball/boost_1_54_0.tar.bz2.boost_1_54_0baserock/morph

1 files changed, 65 insertions, 0 deletions

diff --git a/libs/fusion/test/algorithm/segmented_find_if.cpp b/libs/fusion/test/algorithm/segmented_find_if.cpp
new file mode 100644
index 000000000..98d963cff
--- /dev/null
+++ b/libs/fusion/test/algorithm/segmented_find_if.cpp
@@ -0,0 +1,65 @@
+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+    Copyright (c) 2011 Eric Niebler
+
+    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/detail/lightweight_test.hpp>
+#include <boost/fusion/container/vector/vector.hpp>
+#include <boost/fusion/algorithm/query/find_if.hpp>
+#include <boost/fusion/container/generation/make_vector.hpp>
+#include <boost/mpl/placeholders.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include "../sequence/tree.hpp"
+
+struct not_there {};
+
+template<typename Tree>
+void 
+process_tree(Tree const &tree)
+{
+    using namespace boost;
+    using mpl::_;
+
+    typedef typename boost::fusion::result_of::find_if<Tree const, is_same<_,short> >::type short_iter;
+    typedef typename boost::fusion::result_of::find_if<Tree const, is_same<_,float> >::type float_iter;
+    typedef typename boost::fusion::result_of::find_if<Tree const, is_same<_,not_there> >::type not_there_iter;
+
+    // find_if of a segmented data structure returns generic
+    // segmented iterators
+    short_iter si = fusion::find_if<is_same<_,short> >(tree);
+    float_iter fi = fusion::find_if<is_same<_,float> >(tree);
+
+    // they behave like ordinary Fusion iterators ...
+    BOOST_TEST((*si == short('d')));
+    BOOST_TEST((*fi == float(1)));
+
+    // Searching for something that's not there should return the end iterator.
+    not_there_iter nti = fusion::find_if<is_same<_,not_there> >(tree);
+    BOOST_TEST((nti == fusion::end(tree)));
+}
+
+int
+main()
+{
+    using namespace boost::fusion;
+    process_tree(
+        make_tree(
+            make_vector(double(0),'B')
+          , make_tree(
+                make_vector(1,2,long(3))
+              , make_tree(make_vector('a','b','c'))
+              , make_tree(make_vector(short('d'),'e','f'))
+            )
+          , make_tree(
+                make_vector(4,5,6)
+              , make_tree(make_vector(float(1),'h','i'))
+              , make_tree(make_vector('j','k','l'))
+            )
+        )
+    );
+
+    return boost::report_errors();
+}
+