SemanticIO.h

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/* $Id: SemanticIO.h 17350 2014-08-21 20:30:43Z cdawson $ */
   
#ifndef SEMANTIC_IO_H_
#define SEMANTIC_IO_H_

#include "l_cpp/l_exception.h"
#include "prob_cpp/prob_weight_array.h"
#include <boost/array.hpp>
#include <boost/bind.hpp>
#include <string>
#include <iostream>
#include <numeric>

namespace semantics
{
    template<typename Enum_type>
    std::string enum_to_string(Enum_type)
    {
        return "<Unknown enum type>";
    }


/* /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ */ 

    template<typename Enum_type>
    Enum_type string_to_enum(std::string)
    {
        return static_cast<Enum_type>(0);
    }

// /* /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ */ 

//     enum Attribute_type
//     {
//      COLOR,           //0
//      SIZE,            //1
//      NUM_ATTRIBUTES,  //2
//      NULL_ATTRIBUTE   //3
//     };


/* /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ */ 
    
    namespace Step_code
    {
        enum Code
        {
            NULL_STEP,    //0
            IDENTITY,     //1
            HEAD,         //2
            LEFT_ARG,     //3
            RIGHT_ARG,    //4
            ATT0,         //5
            ATT1,         //6
            NUM_STEPS     //7
        };

        typedef kjb::Weight_array<NUM_STEPS> Weights;
        typedef boost::array<Code, NUM_STEPS> Val_array;
        typedef Weights::Filter Filter_array;

        const Val_array codes =
        {{NULL_STEP, IDENTITY, HEAD, LEFT_ARG, RIGHT_ARG, ATT0, ATT1}};

    };

    typedef Step_code::Code Step_code_t;

    // template<> std::string enum_to_string<Attribute_type>(Attribute_type);
    template<> std::string enum_to_string<Step_code_t>(Step_code_t);
    
    // template<> Attribute_type string_to_enum<Attribute_type>(std::string);
};
    
#endif