[Boost-users] [Spirit] leaf_node_d compile time error

Subject: [Boost-users] [Spirit] leaf_node_d compile time error
From: Chris Uzdavinis (cuzdav_at_[hidden])
Date: 2009-04-24 18:55:53

Hi, I'm upgrading some code from boost 1.33 to 1.38, and upgrading
compilers from
gcc 4.1 to 4.3.3.  Code that used to work is no longer compiling, and
I'm running out
of ideas what might be the problem.  While the real code is
significantly larger, I've
managed to extract the problem down to this short example.

#define BOOST_SPIRIT_USE_OLD_NAMESPACE
#include "boost/spirit/include/classic_core.hpp"
#include "boost/spirit/include/classic_ast.hpp"

using namespace boost::spirit;

struct Test_Parser : public grammar<Test_Parser> {
  template <typename ScannerT>
  struct definition {
    definition(Test_Parser const & /*self*/) {

      test_filter  = leaf_node_d[ ch_p('=') ]  //<<<<<<< HERE
          ;
    }
    rule<ScannerT> test_filter;
    rule<ScannerT> const & start() const { return test_filter; }
  };
};

int main() {
  using namespace boost::spirit;
  char const * str = "=";
  Test_Parser parser;
  parse_info<> info = parse(str, parser, space_p);
}

When I use leaf_node_d[], it doesn't compile.  Removing leaf_node_d,
and all is well.  The error is ugly, but ultimately is this:
error: no type named node_factory_t in
class boost::spirit::leaf_node_parser<T>::parse(const ScannerT&) const

I've spent a few hours trying to grok the code and am falling short.  Any help
would be appreciated.

g++ -I $BOOST_ROOT foo.cpp
/usr/local43/include/boost-1_38/boost/spirit/home/classic/tree/common.hpp:
In member function typename
boost::spirit::parser_result<boost::spirit::leaf_node_parser<T>,
ScannerT>::type boost::spirit::leaf_node_parser<T>::parse(const
ScannerT&) const [with ScannerT = boost::spirit::scanner<const char*,
boost::spirit::scanner_policies<boost::spirit::skipper_iteration_policy<boost::spirit::iteration_policy>,
boost::spirit::match_policy, boost::spirit::action_policy> >, T =
boost::spirit::chlit<char>]:
/usr/local43/include/boost-1_38/boost/spirit/home/classic/core/non_terminal/impl/rule.ipp:235:
  instantiated from typename boost::spirit::match_result<ScannerT,
ContextResultT>::type boost::spirit::impl::concrete_parser<ParserT,
ScannerT, AttrT>::do_parse_virtual(const ScannerT&) const [with
ParserT = boost::spirit::leaf_node_parser<boost::spirit::chlit<char>
>, ScannerT = boost::spirit::scanner<const char*,
boost::spirit::scanner_policies<boost::spirit::skipper_iteration_policy<boost::spirit::iteration_policy>,
boost::spirit::match_policy, boost::spirit::action_policy> >, AttrT =
boost::spirit::nil_t]
foo.cpp:28:   instantiated from here
/usr/local43/include/boost-1_38/boost/spirit/home/classic/tree/common.hpp:903:
error: no type named node_factory_t in class
boost::spirit::leaf_node_parser<T>::parse(const ScannerT&) const [with
ScannerT = boost::spirit::scanner<const char*,
boost::spirit::scanner_policies<boost::spirit::skipper_iteration_policy<boost::spirit::iteration_policy>,
boost::spirit::match_policy, boost::spirit::action_policy> >, T =
boost::spirit::chlit<char>]::result_t
make: *** [.obj/foo.o] Error 1

-- 
Chris