Re: fusion pair issue?

The euphoria has settled a bit:

> 	bool ok = x3::parse(iter, end,
> 		+( +x3::alnum >> ' ' >> +x3::alnum >> ';' ),
> 		res.both);

I had called parse() with res.both instead of res. The whole point of
this was to hand over a struct capable of holding the parsed values
without adding semantic actions. Then one can extended the struct
to more complicated grammars.

Attached is a working example, which then breaks when I apply:

--- try.cpp.orig	2017-04-01 00:59:43.065447337 +0100
+++ try.cpp	2017-04-01 08:46:52.798091359 +0100
@@ -2,6 +2,7 @@
 
 #include <map>
 
+#include <boost/fusion/include/adapt_struct.hpp>
 #include <boost/fusion/include/std_pair.hpp>
 #include <boost/spirit/home/x3.hpp>
 
@@ -20,7 +21,7 @@
 	result res;
 	bool ok = x3::parse(iter, end,
 		+( +x3::alnum >> ' ' >> +x3::alnum >> ';' ),
-		res.both);
+		res);
 	if (!ok)
 		std::cout << "Parsing failed\n";
 	else if (iter != end)



Any more tips?


Cheers,

Patrick

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#define BOOST_SPIRIT_X3_DEBUG

#include <map>

#include <boost/fusion/include/adapt_struct.hpp>
#include <boost/fusion/include/std_pair.hpp>
#include <boost/spirit/home/x3.hpp>

namespace x3 = boost::spirit::x3;

struct result
{
	std::map<std::string, std::string> both;
};

int main()
{
	std::string buf("one two;three four;");
	std::string::const_iterator iter = buf.begin();
	std::string::const_iterator end = buf.end();
	result res;
	bool ok = x3::parse(iter, end,
		+( +x3::alnum >> ' ' >> +x3::alnum >> ';' ),
		res);
	if (!ok)
		std::cout << "Parsing failed\n";
	else 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;
		}

	return 0;
}