Below is a fully self-contained example. The problem appears to be lines 84-89 - if those lines are commented out, the example compiles. What I'm trying to parse is each line of a file, with five colon-delimited items, with the last three items being optional. The single function takes a boost::filesystem::file, sucks it in using boost.interprocess, and parses it.
Examples of what I want this to parse:
a:1
a:2:c
a:3::d
a:4:::e
a:4:c:d:e
The results should store in the vector<file_line>, and file_line is a struct with five members, the last three being optional. Here is the code, and the errors:
Code
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma warning(disable : 4512) // assignment operator could not be generated
# pragma warning(disable : 4127) // conditional expression is constant
# pragma warning(disable : 4244) // 'initializing' : conversion from 'int' to 'char', possible loss of data
#endif
#include <boost/fusion/adapted/struct/adapt_struct.hpp>
#include <boost/fusion/include/adapt_struct.hpp>
#include <boost/spirit/home/qi.hpp>
#include <boost/spirit/home/qi/string.hpp>
#include <boost/spirit/home/karma.hpp>
#include <boost/spirit/home/karma/binary.hpp>
#include <boost/spirit/home/phoenix.hpp>
#include <boost/spirit/home/phoenix/bind.hpp>
#include <boost/spirit/home/phoenix/core.hpp>
#include <boost/spirit/home/phoenix/operator.hpp>
#include <boost/spirit/home/phoenix/statement/sequence.hpp>
#include <boost/fusion/include/std_pair.hpp>
#include <boost/interprocess/file_mapping.hpp>
#include <boost/interprocess/mapped_region.hpp>
#include <boost/filesystem/operations.hpp>
#include <string>
// This struct and fusion adapter is for parsing file servers in colon-newline format.
struct file_line
{
std::string a;
unsigned short b;
boost::optional<std::string> c;
boost::optional<std::string> d;
boost::optional<std::string> e;
};
BOOST_FUSION_ADAPT_STRUCT(
file_line,
(std::string, a)
(unsigned short, b)
(boost::optional<std::string>, c)
(boost::optional<std::string>, d)
(boost::optional<std::string>, e)
)
void
import_proxies_colon_newline(const boost::filesystem::path& file)
{
using namespace boost::spirit;
using qi::parse;
using qi::char_;
using qi::eol;
using qi::eoi;
using qi::lit;
using qi::ushort_;
// <word>:<ushort>:[word]:[word]:[word]
if(boost::filesystem::exists(file) && 0 != boost::filesystem::file_size(file))
{
// Use Boost.Interprocess for fast sucking in of the file. It works great, and provides the bidirectional
// iterators that we need for spirit.
boost::interprocess::file_mapping mapping(file.file_string().c_str(), boost::interprocess::read_only);
boost::interprocess::mapped_region mapped_rgn(mapping, boost::interprocess::read_only);
const char* beg = reinterpret_cast<char*>(mapped_rgn.get_address());
char const* const end = beg + mapped_rgn.get_size();
// And parse the data, putting the results into a vector of pairs of strings.
std::vector<file_line> output;
parse(beg, end,
// Begin grammar
(
*(
*eol
>> +(char_ - (':' | eol)
>> ':' >> ushort_
>> -(':'
>> *(char_ - (':' | eol))
>> (eol |
-(':'
>> *(char_ - (':' | eol))
// This doesn't work. Uncomment it, won't compile. No idea why. It's the same
// as above.
>> (eol |
-(':'
>>
+(char_ - eol)
)
)
)
)
)
>> *eol
)
)
// End grammar, begin output data
,output
);
}
}
Error Messages from MSVC 10
Since questions are limited to 30,000 characters, I'll only display the first few here. The example should attempt to compile and produce the same thing on your machine.
1>C:\devel\dependencies\boost\boost-1_44\include\boost/spirit/home/support/container.hpp(101): error C2955: 'boost::Container' : use of class template requires template argument list
1> C:\devel\dependencies\boost\boost-1_44\include\boost/concept_check.hpp(602) : see declaration of 'boost::Container'
1> C:\devel\dependencies\boost\boost-1_44\include\boost/spirit/home/qi/operator/kleene.hpp(65) : see reference to class template instantiation 'boost::spirit::traits::container_value<Container>' being compiled
1> with
1> [
1> Container=char
1> ]
1> C:\devel\dependencies\boost\boost-1_44\include\boost/spirit/home/qi/detail/fail_function.hpp(38) : see reference to function template instantiation 'bool boost::spirit::qi::kleene<Subject>::parse<Iterator,Context,Skipper,Attribute>(Iterator &,const Iterator &,Context &,const Skipper &,Attribute &) const' being compiled
1> with
1> [
1> Subject=boost::spirit::qi::difference<boost::spirit::qi::char_class<boost::spirit::tag::char_code<boost::spirit::tag::char_,boost::spirit::char_encoding::standard>>,boost::spirit::qi::alternative<boost::fusion::cons<boost::spirit::qi::literal_char<boost::spirit::char_encoding::standard,true,false>,boost::fusion::cons<boost::spirit::qi::eol_parser,boost::fusion::nil>>>>,
1> Iterator=const char *,
1> Context=const boost::fusion::unused_type,
1> Skipper=boost::fusion::unused_type,
1> Attribute=char
1> ]
...snip...
1>C:\devel\dependencies\boost\boost-1_44\include\boost/spirit/home/support/container.hpp(102): fatal error C1903: unable to recover from previous error(s); stopping compilation
