2024-07

lib/include/aocpp/Parsing.hpp

@@ -7,6 +7,7 @@
 #include <vector>
 
 #include <boost/spirit/home/qi.hpp>
+#include <boost/fusion/include/boost_tuple.hpp>
 
 namespace aocpp {
 
@@ -46,6 +47,20 @@ auto ParseGrammar_(G const& grammar, std::istream & in) -> typename G::start_typ
   return result;
 }
 
+template <typename P, typename R>
+auto ParseSimple(std::istream& in, P p, R & result) -> void
+{
+  namespace qi = boost::spirit::qi;
+  auto const content = std::string{std::istreambuf_iterator{in}, {}};
+  qi::rule<std::string::const_iterator, R()> r { std::move(p) };
+  auto it = content.begin();
+  auto const end = content.end();
+  bool success = qi::parse(it, end, r, result);
+  if (!success || it != end) {
+      throw std::runtime_error("Parsing failed or input was not fully consumed.");
+  }
+}
+
 }
 
 #endif