No matching function for call error for Qi semantic action

Question

I have part of a grammar as follows:

typedef SemanticActions< IterType > SemanticActionsType;

string_ %= lexeme[ +( spirit::qi::alnum | punct )];

component_ = lit( '-' ) >> string_[boost::bind( &SemanticActionsType::new_component_name, &actions_, _1, _2 )]

And the corresponding semantic actions class:

template< typename IterType >
class SemanticActions
{
public:
    SemanticActions( Design_p d ) : design_( d )
    {
    }

    void print(int const& i) const
    {
        std::cout << i << std::endl;
    }

    void new_component_name ( std::string::iterator const b, std::string::iterator const e) const
    {
        cout << "new component name" << endl;
    }

I can get the "print" function to call from an int_ token, but I can't get new_component_name to get called from the string_ token.

I'm getting the following error: boost/include/boost/bind/bind.hpp:397:9: No matching function for call to object of type 'const boost::_mfi::cmf2 >, std::__1::__wrap_iter, std::__1::__wrap_iter >'

I've tried both the iterator pair parameters as well as "std::string & s const" parameter.

sehe sehe · Accepted Answer · 2013-12-31T22:02:31

You need to use phoenix bind (with the qi placeholders)

namespace phx = boost::phoenix;

component_ = (lit( '-' ) >> string_)
       [phx::bind( &SemanticActionsType::new_component_name, &actions_, qi::_1, qi::_2 )];

Note also the added parentheses (!), otherwise that SA would be attached to the string_ rule only.

In case you're not already using it, may I suggest using the recommended

#define BOOST_SPIRIT_USE_PHOENIX_V3

which solves many spotty problems with Spirit semantic actions (and is sometimes plain required to even compile the examples on recent compilers).

No matching function for call error for Qi semantic action

1 Answers