#ifndef __GUT_ENVIRON_HXX
#define __GUT_ENVIRON_HXX

#include <map>
#include <functional>
#include <stdexcept>
#include "util.hpp"
#include "variable.hpp"

namespace gut {

class environment
{
private:
	typedef std::map<string_key, variable *>    vartype;
	inline std::pair<string_key, variable *>
	make_pair(const char *name, variable *var)
	{
		return std::make_pair<string_key, variable *>(string_key(name), var);
	}
	vartype			m_vars;
	environment		*m_parent_env;

public:
	environment(environment *parent_env = NULL);
	~environment(void);
	
	variable *find_var(const char *name);
	void set_var_int(const char *name, long value);
	void set_var_float(const char *name, float value);
	void set_var_string(const char *name, const char *value);
	environment  *get_parent_env(void);
	
	void print(void);//debug
};


extern environment g_environ;

}   // namespace gut


#endif	// __GUT_ENVIRON_HPP