compilation error. (Hartmut Kaiser)
----------------------------------------------------------------------

Message: 1
Date: Thu, 13 May 2010 18:28:19 -0500
From: "Hartmut Kaiser" <hartmut.kaiser@gmail.com>
To: <boost-users@lists.boost.org>
Subject: Re: [Boost-users] Spirit: parsing tab separated values and
no_skip compilation error.
Message-ID: <0d5301caf2f3$fa1c64e0$ee552ea0$@gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

> I am a beginner with Spirit. I just read the tutorial and I am playing
> around with some examples.
> Environment: boost 1.43, Windows Vista, Code::Blocks, mingw, gcc 4.5.
>
> My goal is to build a tab separated values parser.
> If you have an example on how to parse something like:
> string/t/tdouble/tdouble
> it would be great. Contiguous tabs should be considered as one tab, not an
> empty field.
>
> To start I just tried to parse a tab separated list of strings but I am
> having some difficulties.
>
> Is there another skip parser to be used instead of space (for full code
> see the end of the message below) ?
> I have changed the commas to tabs in the code below but it failed. I guess
> it was because it was skipping them (space skipper).
>
> ??????? bool r = phrase_parse(first, last,
>
> ??????????? //? Begin grammar
> ??????????? (
> ??????????????? +(char_ - ',') % ','
> ??????????? )
> ??????????? ,
> ??????????? //? End grammar
>
> ??????????? space, v);
>
> This code works with commas but it fails with '\t'.
>
> I tried to use no_skip[] but it failed to compile the header #include
> <boost/spirit/include/qi_no_skip.hpp>:
>
> C:\boost_1_43_0\boost\spirit\home\qi\directive\no_skip.hpp|30|error:
> 'no_skip' is not a member of 'boost::spirit::tag'|
>
> For full error message see the end of the message below.
>
> Any suggestions ?
>
> Thank you for your attention,
> Mau.
>
> #include <boost/config/warning_disable.hpp>
> #include <boost/spirit/include/qi.hpp>
> #include <boost/spirit/include/phoenix_core.hpp>
> #include <boost/spirit/include/phoenix_operator.hpp>
> #include <boost/spirit/include/phoenix_stl.hpp>
> //#include <boost/spirit/include/qi_no_skip.hpp>
>
> #include <iostream>
> #include <string>
> #include <vector>
>
> #define VECTOR_TYPE std::string
>
> namespace client
> {
> ??? namespace qi = boost::spirit::qi;
> ??? namespace ascii = boost::spirit::ascii;
>
> ??? //////////////////////////////////////////////////////////////////////
> /////
> ??? //? Our number list compiler
> ??? //////////////////////////////////////////////////////////////////////
> /////
> ??? //[tutorial_numlist4
> ??? template <typename Iterator>
> ??? bool parse_numbers(Iterator first, Iterator last,
> std::vector<VECTOR_TYPE>& v)
> ??? {
> ??????? using qi::double_;
> ??????? using qi::phrase_parse;
> ??????? using qi::_1;
> ??????? using ascii::space;
> ??????? using qi::char_;
>
> ??????? bool r = phrase_parse(first, last,
>
> ??????????? //? Begin grammar
> ??????????? (
> ??????????????? +(char_ - ',') % ','
> ??????????? )
> ??????????? ,
> ??????????? //? End grammar
>
> ??????????? space, v);
>
> ??????? if (first != last) // fail if we did not get a full match
> ??????????? return false;
> ??????? return r;
> ??? }
> ??? //]
> }
>
> //////////////////////////////////////////////////////////////////////////
> //
> //? Main program
> //////////////////////////////////////////////////////////////////////////
> //
> int
> main()
> {
> ??? std::cout <<
> "/////////////////////////////////////////////////////////\n\n";
> ??? std::cout << "\t\tA comma separated list parser for Spirit...\n\n";
> ??? std::cout <<
> "/////////////////////////////////////////////////////////\n\n";
>
> ??? std::cout << "Give me a comma separated list of numbers.\n";
> ??? std::cout << "The numbers will be inserted in a vector of numbers\n";
> ??? std::cout << "Type [q or Q] to quit\n\n";
>
> ??? std::string str;
> ??? while (getline(std::cin, str))
> ??? {
> ??????? if (str.empty() || str[0] == 'q' || str[0] == 'Q')
> ??????????? break;
>
> ??????? std::vector<VECTOR_TYPE> v;
> ??????? if (client::parse_numbers(str.begin(), str.end(), v))
> ??????? {
> ??????????? std::cout << "-------------------------\n";
> ??????????? std::cout << "Parsing succeeded\n";
> ??????????? std::cout << str << " Parses OK: " << std::endl;
>
> ??????????? for (std::vector<VECTOR_TYPE>::size_type i = 0; i < v.size();
> ++i)
> ??????????????? std::cout << i << ": " << v[i] << std::endl;
>
> ??????????? std::cout << "\n-------------------------\n";
> ??????? }
> ??????? else
> ??????? {
> ??????????? std::cout << "-------------------------\n";
> ??????????? std::cout << "Parsing failed\n";
> ??????????? std::cout << "-------------------------\n";
> ??????? }
> ??? }
>
> ??? std::cout << "Bye... :-) \n\n";
> ??? return 0;
> }

This example compiles fine for me (VC10, g++ 4.5). Is it supposed to fail?

Regards Hartmut

---------------
Meet me at BoostCon
www.boostcon.com