Qi parsing issue with simple structured input like C

Question

I am trying to set up a basic parser for some game data that use the familiar and very simple "C-style" format. Basically, naming the copied "structures" and then entering the parameters and nested "structures" inside. It will parse something like this:

Name0
{
 Name1
 {
  Param0 *= 2
  Param2 = "lol"
 }
 Param0 = 1
 Param1 = "test"

 Name2 { }
}

Name3 {
 Param0 = "test"
}

, "Test {}", - , . , , , . , , , category root. , "Test {}":

Error! Expecting <sequence>"{"<node> here: ""

Parser:

 template<typename Iterator>
 struct Parser : qi::grammar<Iterator, std::vector<Category>(), ascii::space_type>
 {
  qi::rule<Iterator, std::vector<Category>(), ascii::space_type> root;

  qi::rule<Iterator, Category(), ascii::space_type> category;
  qi::rule<Iterator, Param(), ascii::space_type> param;

  qi::rule<Iterator, Node(), ascii::space_type> node;

  qi::rule<Iterator, Value(), ascii::space_type> value;

  qi::rule<Iterator, char()> escape;
  qi::rule<Iterator, std::string()> quotedstring;
  qi::rule<Iterator, std::string()> normalstring;

  qi::rule<Iterator> comment;
  qi::rule<Iterator> commentblock;

  Parser() : Parser::base_type(root, "root")
  {
   using namespace qi;

   using ascii::char_;

   using phoenix::construct;
   using phoenix::val;

   escape %= '\\' > char_("\\\"");
   quotedstring %= '"' >> *((char_ - '"') | escape) > '"';
   normalstring %= *(char_ - qi::eol);

   comment = "//" >> *(char_ - qi::eol);
   commentblock = "/*" >> *(char_ - "*/") > "*/";

   node %= category | param; //comment? comment block? holding off for now

   value %= normalstring | float_;

   param %=
    lexeme[+(char_ - operators)]
    > operators
    > value
    > qi::eol;

   category %=
    lexeme[+(char_ - '{')] //won't this grab all whitespace around the tag too?
    > '{'
    >> *node
    > '}';

    root %= *category;

    root.name("root");

    category.name("category");
    param.name("param");

    node.name("node");

    value.name("value");

    escape.name("escape");
    quotedstring.name("quotedstring");
    normalstring.name("normalstring");

    comment.name("comment");
    commentblock.name("commentblock");

    debug(root);
    debug(category);
    debug(param);
    debug(node);
    debug(value);
    debug(escape);
    debug(quotedstring);
    debug(normalstring);
    debug(comment);
    debug(commentblock);

    on_error<fail>
     (
     root,
     std::cout
     << val("Error! Expecting ")
     << _4
     << val(" here: \"")
     << construct<std::string>(_3, _2)
     << val("\"")
     << std::endl
     );
  }
 };

, ++ 11 lambdas on_success on_error? on_error , , , , ( ). ? , - , , .

:

operators:

 struct Operators : qi::symbols<char, Operator>
 {
  Operators()
  {
   add
    ("=", Operator::equal)
    ("+=", Operator::plusequal)
    ("-=", Operator::minusequal)
    ("*=", Operator::timesequal)
    ("/=", Operator::divideequal)
    ;
  }
 } operators;

Answer 1

operators .

, node }, catagory .