Re: [Boost-users] [spirit2] Trivial parser crashes

Subject: Re: [Boost-users] [spirit2] Trivial parser crashes
From: sm4 (sunnyim4_at_[hidden])
Date: 2008-09-24 11:19:19

Oops - seems formatting got in the way.

Hope this is better:

-----------------------------------------------------------------------------------------
#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_fusion.hpp>
#include <boost/fusion/include/adapt_struct.hpp>
#include <boost/fusion/include/adapt_struct.hpp>

#include <iostream>
#include <string>

using namespace boost::spirit;
using namespace boost::spirit::qi;
using namespace boost::spirit::ascii;
using namespace boost::spirit::arg_names;

namespace phoenix = boost::phoenix;

using phoenix::at_c;

struct key_val
{
    std::string key;
    std::string value;
};

BOOST_FUSION_ADAPT_STRUCT(
    key_val,
    (std::string, key)
    (std::string, value)
)

template <typename Iterator>
struct my_grammar : grammar<Iterator, key_val(), space_type>
{
    my_grammar() : my_grammar::base_type(start)
    {
        quoted_string %= lexeme['"' >> +(char_ - '"') >> '"'];
        key %= quoted_string;
        value %= quoted_string;

        start =
                key           [at_c<0>(_val) = _1]
             >> ':'
             >> value         [at_c<1>(_val) = _1]
             ;
    }

    rule<Iterator, std::string(), space_type> key;
    rule<Iterator, std::string(), space_type> quoted_string;
    rule<Iterator, std::string(), space_type> value;

    rule<Iterator, key_val(), space_type> start;

};

int main()
{
    typedef std::string::const_iterator citerator;
    std::string str = "\"x\": \"25\" ";

    citerator iter = str.begin();
    citerator end = str.end();

    my_grammar<citerator> my_parser;
    key_val kv;
    phrase_parse(iter, end, my_parser, kv, space); // ASSERTs

    return 0;
} 

-----------------------------------------------------------------------------------------

Joel de Guzman-2 wrote:
> 
> sm4 wrote:
>> Hello, Playing with spirit-2 (boost 1.36 release) I got the following 
>> code to ASSERT when compiled on Visual Studio 2008/SP1. Any ideas what's 
>> wrong? ---------------------------------------------------------- 
>> #include #include #include #include #include #include #include #include 
>> #include using namespace boost::spirit; using namespace 
>> boost::spirit::qi; using namespace boost::spirit::ascii; using namespace 
>> boost::spirit::arg_names; namespace phoenix = boost::phoenix; using 
>> phoenix::at_c; struct key_val { std::string key; std::string value; }; 
>> BOOST_FUSION_ADAPT_STRUCT( key_val, (std::string, key) (std::string, 
>> value) ) template struct my_grammar : grammar { my_grammar() : 
>> my_grammar::base_type(start) { quoted_string %= lexeme['"' >> +(char_ - 
>> '"') >> '"']; key %= quoted_string; value %= quoted_string; start = key 
>> [at_c<0>(_val) = _1] >> ':' >> value [at_c<1>(_val) = _1] ; } rule key; 
>> rule quoted_string; rule value; rule start; }; int main() { typedef 
>> std::string::const_iterator citerator; std::string str = "\"x\": \"25\" 
>> "; citerator iter = str.begin(); citerator end = str.end(); my_grammar 
>> my_parser; key_val kv; phrase_parse(iter, end, my_parser, kv, space); // 
>> ASSERTs return 0; } 
> 
> Wow, care to repost that code?
> 
> Regards,
> -- 
> Joel de Guzman
> http://www.boostpro.com
> http://spirit.sf.net
> 
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
> 
> 

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