-- Difference expressions: PRODUCT "-" PRODUCT "-" ... "-" PRODUCT class DIFF inherit REPETITION redefine post_action end POLYNOM undefine copy, is_equal end create make feature construct_name: STRING is "DIFF" feature {NONE} separator: STRING is "-" feature production: LINKED_LIST [CONSTRUCT] is local base: PRODUCT once create Result.make Result.forth; create base.make put (base) end -- production post_action is local int_value: INTEGER do from child_start if not no_components then child.post_action int_value := info.child_value child_forth end; until no_components or child_after loop child.post_action int_value := int_value - info.child_value child_forth end info.set_child_value (int_value) end -- post_action end -- class DIFF --|---------------------------------------------------------------- --| EiffelParse: library of reusable components for ISE Eiffel. --| Copyright (C) 1986-2001 Interactive Software Engineering Inc. --| All rights reserved. Duplication and distribution prohibited. --| May be used only with ISE Eiffel, under terms of user license. --| Contact ISE for any other use. --| --| Interactive Software Engineering Inc. --| ISE Building --| 360 Storke Road, Goleta, CA 93117 USA --| Telephone 805-685-1006, Fax 805-685-6869 --| Electronic mail --| Customer support: http://support.eiffel.com> --| For latest info see award-winning pages: http://www.eiffel.com --|----------------------------------------------------------------