Re: fusion pair issue?

On 01-04-17 09:54, Patrick Welche wrote:
>
> Any more tips?
No real difference. Indeed I had been reshaping the problem in several
ways to match the conventions that jell with X3.

If you must, you will have to do some type "hinting" work. I love hiding
the cruft in small factory lambdas like this:
http://coliru.stacked-crooked.com/a/416a5b7061721b2d :

    using Map = std::map<std::string, std::string>;

    struct result {
        Map both;
    };

    BOOST_FUSION_ADAPT_STRUCT(result, both)

    int main()
    {
        std::string const buf("one two;three four;");
        auto iter = buf.begin(), end = buf.end();
        auto parser = []{
            using namespace boost::spirit::x3;

            auto string_ = lexeme [ +(graph - ';') ];
            auto map_    = -(string_ >> string_) % ';';

            return rule<struct _, Map> {"parser"} = skip(space) [ map_ ];
        };
       
        result res;
        bool ok = parse(iter, end, parser(), res);

        if (ok) {
            std::cout << "Parse success\n";
        }
        else {
            std::cout << "Parsing failed\n";
        }

        if (iter != end) {
            std::cout << "Bit left over at the end: " <<
    std::string(iter, end) << std::endl;
        }
        else {
            for (auto p : res.both) {
                std::cout << "found: " << p.first << ' ' << p.second <<
    std::endl;
            }
        }
    }


Which prints

    <parser>
      <try>one two;three four;</try>
      <success></success>
      <attributes>[[[[o, n, e], [t, w, o]], [[t, h, r, e, e], [f, o, u,
r]]]]</attributes>
    </parser>
    Parse success
    found: one two
    found: three four

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot

_______________________________________________
Spirit-general mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/spirit-general