code: def relexp_action(self, text, loc, arg):
          
          if DEBUG > 0:
              print("REL_EXP:",arg)
              if DEBUG == 2: self.symtab.display()
              if DEBUG > 2: return
          exshared.setpos(loc, text)
          if not self.symtab.same_types(arg[0], arg[2]):
              raise SemanticException("Invalid operands for operator '{0}'".format(arg[1]))
          self.codegen.compare(arg[0], arg[2])
          #return relational operator's code
          self.relexp_code = self.codegen.relop_code(arg[1], self.symtab.get_type(arg[0]))
          return self.relexp_code
docs: Code executed after recognising a relexp expression (something relop something)