include/rucy/symbol.h in rucy-0.1.3 vs include/rucy/symbol.h in rucy-0.1.4

@@ -16,27 +16,38 @@
 
 namespace Rucy
 {
 
 
+	class Value;
+
+
 	class Symbol
 	{
 
 		public:
 
 			Symbol ();
 
 			Symbol (ID id);
 
+			Symbol (const Value& value);
+
 			Symbol (const char* str);
 
 			ID id () const;
 
+			VALUE value () const;
+
 			const char* c_str () const;
 
 			operator bool () const;
 
 			bool operator ! () const;
+
+			friend bool operator == (const Symbol& lhs, const Symbol& rhs);
+
+			friend bool operator != (const Symbol& lhs, const Symbol& rhs);
 
 		private:
 
 			ID id_;