1 files changed, 49 insertions, 0 deletions
diff --git a/src/boost/libs/metaparse/example/getting_started/7.hpp b/src/boost/libs/metaparse/example/getting_started/7.hpp
new file mode 100644
index 00000000..fe245b98
--- /dev/null
+++ b/src/boost/libs/metaparse/example/getting_started/7.hpp
@@ -0,0 +1,49 @@
+#ifndef BOOST_METAPARSE_GETTING_STARTED_7_HPP
+#define BOOST_METAPARSE_GETTING_STARTED_7_HPP
+
+// Automatically generated header file
+
+// Definitions before section 6.2
+#include "6_2.hpp"
+
+// Definitions of section 6.2
+#include <boost/mpl/minus.hpp>
+
+template <class L, char Op, class R> struct eval_binary_op;
+
+template <class L, class R> struct eval_binary_op<L, '+', R> : boost::mpl::plus<L, R>::type {};
+
+template <class L, class R> struct eval_binary_op<L, '-', R> : boost::mpl::minus<L, R>::type {};
+
+// query:
+//    eval_binary_op<boost::mpl::int_<11>, '+', boost::mpl::int_<2>>::type
+
+// query:
+//    eval_binary_op<boost::mpl::int_<13>, '-', boost::mpl::int_<2>>::type
+
+template <class S, class Item> 
+ struct binary_op : 
+   eval_binary_op< 
+     S, 
+     boost::mpl::at_c<Item, 0>::type::value, 
+     typename boost::mpl::at_c<Item, 1>::type 
+   > 
+   {};
+
+// query:
+//    binary_op<boost::mpl::int_<11>, boost::mpl::vector<boost::mpl::char_<'+'>, boost::mpl::int_<2>>>::type
+
+using exp_parser13 = 
+ build_parser< 
+   foldl_start_with_parser< 
+     sequence<one_of<plus_token, minus_token>, int_token>, 
+     int_token, 
+     boost::mpl::quote2<binary_op> 
+   > 
+ >;
+
+// query:
+//    exp_parser13::apply<BOOST_METAPARSE_STRING("1 + 2 - 3")>::type
+
+#endif
+