#ifndef OSGINTROSPECTION_PARAMETERINFO_
#define OSGINTROSPECTION_PARAMETERINFO_

#include <osgIntrospection/Type>
#include <osgIntrospection/Value>

#include <string>
#include <vector>

namespace osgIntrospection
{

    /// This class stores information about a function parameter. A parameter
    /// is defined by its name, its type, its position within the parameter
    /// list, and zero or more attributes. Attributes describe how the
    /// parameter behave, for example whether it is an input or an output
    /// parameter.
    class ParameterInfo
    {
    public:
        enum ParameterAttributes
        {
            NONE  = 0,

            IN    = 1,  // parameter is used to pass data to the function
            OUT   = 2,  // parameter is used to return data from the function

            INOUT = IN | OUT
        };

        /// Direct initialization constructor.
        inline ParameterInfo(const std::string &name, const Type &type, int attribs, const Value &defval = Value());

        /// Returns the parameter's name.
        inline const std::string &getName() const;

        /// Returns the parameter's type.
        inline const Type &getParameterType() const;

        /// Returns the parameter's attributes.
        inline int getAttributes() const;
        
        /// Returns the default value.
        inline const Value &getDefaultValue() const;

        /// Returns whether the parameter has the IN attribute.
        inline bool isIn() const { return (attribs_ & IN) != 0; }

        /// Returns whether the parameter has the OUT attribute.
        inline bool isOut() const { return (attribs_ & OUT) != 0; }

        /// Returns whether the parameter has both the IN and the 
        /// OUT attribute.
        inline bool isInOut() const { return isIn() && isOut(); }

    private:
        std::string name_;
        const Type &type_;
        int attribs_;
        Value default_;
    };

    // INLINE METHODS

    inline ParameterInfo::ParameterInfo(const std::string &name, const Type &type, int attribs, const Value &defval)
    :   name_(name),
        type_(type),
        attribs_(attribs),
        default_(defval)
    {
    }

    inline const std::string &ParameterInfo::getName() const
    {
        return name_;
    }

    inline const Type &ParameterInfo::getParameterType() const
    {
        return type_;
    }

    inline int ParameterInfo::getAttributes() const
    {
        return attribs_;
    }
    
    inline const Value &ParameterInfo::getDefaultValue() const
    {
		return default_;
    }

}

#endif