#ifndef __GUT_OPERATOR_HPP
#define __GUT_OPERATOR_HPP

#include "variable.hpp"
#include "ptnode.hpp"

namespace gut {

const unsigned long TOKEN_FUNCTION 	= 0xffffff;
const unsigned long TOKEN_OPERATION = 0xfffff;
const unsigned long TOKEN_CONTROL   = 0xffff;

typedef	variable (*operate_f)(ptnode *pnode);
typedef std::map<int, operate_f>    function_table_t;

void initialize_funcion(void);
void initialize_operation(void);

inline bool token_is_function(int token_id)
{
	return (token_id >= TOKEN_FUNCTION);
}

inline bool token_is_operation(int token_id)
{
	return (token_id >= TOKEN_OPERATION && token_id < TOKEN_FUNCTION);
}

variable excute_function(int token_id, ptnode *pnode);
variable excute_operation(int token_id, ptnode *pnode);

}   // namespace gut

#endif  // __gut_OPERATOR_HPP