Amiga ACS 1998 #4/amigaacscoverdisc1998-041998.iso/utilities/shareware/dev/ppcsmalleiffel/lib_se/call.e

Text File | 1998-01-16 | 5.6 KB | 228 lines

--          This file is part of SmallEiffel The GNU Eiffel Compiler.
--          Copyright (C) 1994-98 LORIA - UHP - CRIN - INRIA - FRANCE
--            Dominique COLNET and Suzanne COLLIN - [e-mail]
--                       http://www.loria.fr/SmallEiffel
-- SmallEiffel 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;  either  version  2, or (at your option)  any  later
-- version. SmallEiffel 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  SmallEiffel;  see the file COPYING.  If not,
-- write to the  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA 02111-1307, USA.
--
deferred class CALL
--
-- For all sort of feature calls with result value.
-- So it does not include procedure calls (see PROC_CALL).
--
-- Classification: CALL_0 when 0 argument, CALL_1 when
-- 1 argument and CALL_N when N arguments.
--

inherit
   CALL_PROC_CALL
      undefine fill_tagged_out_memory
      end;
   EXPRESSION;

feature

   result_type: TYPE;
     -- When checked, the result_type of the call.

feature

   is_static: BOOLEAN is
      deferred
      end;

   frozen call_is_static: BOOLEAN is
      local
     rc: RUN_CLASS;
     running: ARRAY[RUN_CLASS];
     rf: like run_feature;
      do
     if run_feature /= Void then
        rc := run_feature.run_class;
        if rc /= Void then
           running := rc.running;
           if running /= Void and then running.count = 1 then
          rf := running.first.dynamic(run_feature);
          if rf.is_static then
             static_value_mem := rf.static_value_mem;
             Result := true;
          end;
           end;
        end;
     end;
      end;

   frozen mapping_c_target(target_type: TYPE) is
      local
     flag: BOOLEAN;
     actual_type: like result_type;
      do
     flag := cpp.call_invariant_start(target_type);
     actual_type := result_type.run_type;
     if actual_type.is_reference then
        if target_type.is_reference then
           -- Reference into Reference :
           cpp.put_character('(');
           cpp.put_character('(');
           cpp.put_character('T');
           cpp.put_integer(target_type.id);
           cpp.put_character('*');
           cpp.put_character(')');
           cpp.put_character('(');
           compile_to_c;
           cpp.put_character(')');
           cpp.put_character(')');
        else
           -- Reference into Expanded :
           actual_type.to_expanded;
           cpp.put_character('(');
           compile_to_c;
           cpp.put_character(')');
        end;
     else
        if target_type.is_reference then
           -- Expanded into Reference :
           actual_type.to_reference;
           cpp.put_character('(');
           compile_to_c;
           cpp.put_character(')');
        else
           -- Expanded into Expanded :
           if target_type.need_c_struct then
          cpp.put_character('&');
          cpp.put_character('(');
          compile_to_c;
          cpp.put_character(')');
           else
          compile_to_c;
           end;
        end;
     end;
     if flag then
        cpp.call_invariant_end;
     end;
      end;

   frozen mapping_c_arg(formal_arg_type: TYPE) is
      local
     actual_type: like result_type;
      do
     actual_type := result_type.run_type;
     if actual_type.is_reference then
        if formal_arg_type.is_reference then
           -- Reference into Reference :
           compile_to_c;
        else
           -- Reference into Expanded :
           actual_type.to_expanded;
           cpp.put_character('(');
           compile_to_c;
           cpp.put_character(')');
        end;
     else
        if formal_arg_type.is_reference then
           -- Expanded into Reference :
           actual_type.to_reference;
           cpp.put_character('(');
           compile_to_c;
           cpp.put_character(')');
        else
           -- Expanded into Expanded :
           if formal_arg_type.need_c_struct then
          cpp.put_character('&');
          cpp.put_character('(');
          compile_to_c;
          cpp.put_character(')');
           else
          compile_to_c;
           end;
        end;
     end;
      end;

   compile_to_c is
      do
     call_proc_call_c2c;
      end;

   frozen compile_to_c_old is
      do
     target.compile_to_c_old;
     if arg_count > 0 then
        arguments.compile_to_c_old;
     end;
      end;

   frozen compile_to_jvm_old is
      do
     target.compile_to_jvm_old;
     if arg_count > 0 then
        arguments.compile_to_jvm_old;
     end;
      end;

   precedence: INTEGER is
      do
     Result := dot_precedence;
      end;

   frozen c_simple: BOOLEAN is do end;

   print_as_target is
      do
     pretty_print;
     fmt.put_character('.');
      end;

   frozen compile_target_to_jvm is
      do
     standard_compile_target_to_jvm;
      end;

   frozen compile_to_jvm_assignment(a: ASSIGNMENT) is
      do
      end;

   frozen compile_to_jvm_into(dest: TYPE): INTEGER is
      do
     Result := standard_compile_to_jvm_into(dest);
      end;

feature {NONE}

   frozen to_runnable_0(ct: TYPE) is
      require
     ct /= Void;
     current_type = Void
      do
     current_type := ct;
     cpc_to_runnable(ct);
     result_type := run_feature.result_type;
     if result_type = Void then
        eh.add_position(run_feature.start_position);
        error(feature_name.start_position,
          "Feature found has no result.");
     elseif result_type.is_like_current then
        result_type := target.result_type;
     end;
      ensure
     current_type = ct;
      end;

feature {CREATION_CALL,EXPRESSION_WITH_COMMENT}

   jvm_assign is
      do
      end;

end -- CALL