#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 position, int attribs);

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

		/// Return the parameter's position within the function's parameter
		/// list. This position is zero-based.
		inline int getPosition() const;

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

		/// Returns the parameter's attributes.
		inline int getAttributes() 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 position_;
		int attribs_;
	};

	// INLINE METHODS

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

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

	inline int ParameterInfo::getPosition() const
	{
		return position_;
	}

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

	inline int ParameterInfo::getAttributes() const
	{
		return attribs_;
	}

}

#endif