Common Text Transformation Library: action

// sample code: action_handler.cpp
// demonstrates semantic action implemented as member function template.

#include "cttl/cttl.h"

using namespace cttl;

class handler
{
    //...
public:
    template< typename UniverseT >
    size_t action( UniverseT& universe_ )
    {
        //...
        return universe_.first.offset();
    }
};


int main(int argc, char* argv[])
{
    input<> inp;                            // construct input object
    typedef const_edge<> universe_T;        // type of parseable universe
    universe_T universe( new_edge( inp ) ); // construct universe
    handler sa_handler;                     // handler class implements
                                            // semantic actions
    // VC7.1 error C2784 workaround:
    typedef size_t ( handler::* action_T ) ( universe_T& );
    
    size_t result = rule(
        sa_handler,
        action_T( &handler::action< universe_T > )
        ).match( universe );

    assert( result != std::string::npos );  // assert that match succeeded
    return 0;
}

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