[Boost-users] [Spirit] Grammar rule problem

Subject: [Boost-users] [Spirit] Grammar rule problem
From: Dylan Klomparens (dylan.klomparens_at_[hidden])
Date: 2009-10-30 11:30:51

Hello,

I'm writing a configuration file parser with boost::spirit, and have
encountered some strange errors. The errors are:

1) error C2078: too many initializers (in file assign_actor.hpp, line 62)

2) error C2440: 'initializing' : cannot convert from 'const iterator_t ' to
'value_type' (in file assign_actor.hpp, line 62)

The line that's causing the error is identical (in concept) to the one
above. Why is it generating an error? The code I'm using is below. Rule
"two" is generating the error.

#include <iostream>
#include <boost/spirit.hpp>
using namespace std;

int main()
{
    using namespace boost::spirit;
    const int UnsignedCharacterMaximum = (numeric_limits<unsigned
char>::max)();
    const int UnsignedShortMaximum = (numeric_limits<unsigned
short>::max)();
    rule<> octet_p = limit_d(0, UnsignedCharacterMaximum)[int_p];
    rule<> ip_address_p = octet_p >> ch_p('.') >> octet_p >> ch_p('.') >>
octet_p >> ch_p('.') >> octet_p;
    rule<> network_port_p = limit_d(0, UnsignedShortMaximum - 1)[int_p];

    string s;
    int i;
    rule<> one = ip_address_p[assign_a(s)];
    rule<> two = network_port_p[assign_a(i)]; // Commenting this line gets
rid of the error.
    // But this line should work. It is identical (in conecpt) to the
previous line.

    cout << parse("192.168.0.1", one).full << endl;

    return 0;
}