Code::is_valid rection

project/components/inlines.hpp

@@ -133,6 +133,12 @@ bool is_equal( Code self, Code other )
 	return is_equal( self.ast, other.ast );
 }
 
+inline
+bool is_valid(Code self)
+{
+	return self.ast != nullptr && self.ast->Type != CodeT::Invalid;
+}
+
 inline
 Code& Code::operator ++()
 {