-- This file is part of Liberty Eiffel.
--
-- Liberty Eiffel is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, version 3 of the License.
--
-- Liberty Eiffel is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with Liberty Eiffel.  If not, see <http://www.gnu.org/licenses/>.
--
class LIBERTY_CALL_INSTRUCTION

inherit
   LIBERTY_INSTRUCTION
   LIBERTY_CALL

create {LIBERTY_BUILDER_TOOLS, LIBERTY_CALL_INSTRUCTION}
   make, implicit_current

feature {ANY}
   target: LIBERTY_EXPRESSION
   entity: LIBERTY_FEATURE_ENTITY

feature {LIBERTY_REACHABLE, LIBERTY_REACHABLE_COLLECTION_MARKER}
   mark_reachable_code (mark: INTEGER) is
      do
         if target /= Void then
            target.mark_reachable_code(mark)
         end
         entity.mark_reachable_code(mark)
         expressions_marker.mark_reachable_code(mark, actuals)
      end

feature {}
   make (a_target: like target; a_entity: like entity; a_actuals: like actuals_list; a_position: like position) is
      require
         a_target /= Void
         a_entity /= Void
         a_actuals /= Void
         a_position /= Void
      do
         target := a_target
         entity := a_entity
         actuals_list := a_actuals
         position := a_position
         register_for_promotion
      ensure
         target = a_target or else {LIBERTY_CAST_EXPRESSION} ?:= target
         entity = a_entity
         actuals_list = a_actuals
         position = a_position
      end

   implicit_current (a_entity: like entity; a_actuals: like actuals_list; a_position: like position) is
      require
         a_entity /= Void
         a_actuals /= Void
         a_position /= Void
      do
         entity := a_entity
         actuals_list := a_actuals
         position := a_position
      ensure
         is_implicit_current
         entity = a_entity
         actuals_list = a_actuals
         position = a_position
      end

   actuals_list: COLLECTION[LIBERTY_EXPRESSION]

   make_new (a_target: like target; a_entity: like entity; a_actuals: like actuals_list; a_position: like position): like Current is
      do
         if a_target = Void then
            create Result.implicit_current(a_entity, a_actuals, a_position)
         else
            create Result.make(a_target, a_entity, a_actuals, a_position)
         end
      end

feature {LIBERTY_CALL_PROMOTION}
   set_entity (a_entity: like entity) is
      do
         entity := a_entity
      end

   set_target (a_target: like target) is
      do
         target := a_target
      end

feature {ANY}
   accept (v: VISITOR) is
      local
         v0: LIBERTY_CALL_INSTRUCTION_VISITOR
      do
         v0 ::= v
         v0.visit_liberty_call_instruction(Current)
      end

end