gcc/ada/itypes.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              I T Y P E S                                 --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2006, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with Atree; use Atree;
  28 with Opt;   use Opt;
  29 with Sem;   use Sem;
  30 with Sinfo; use Sinfo;
  31 with Stand; use Stand;
  32
  33 package body Itypes is
  34
  35    ------------------
  36    -- Create_Itype --
  37    ------------------
  38
  39    function Create_Itype
  40      (Ekind        : Entity_Kind;
  41       Related_Nod  : Node_Id;
  42       Related_Id   : Entity_Id := Empty;
  43       Suffix       : Character := ' ';
  44       Suffix_Index : Nat       := 0;
  45       Scope_Id     : Entity_Id := Current_Scope) return Entity_Id
  46    is
  47       Typ : Entity_Id;
  48
  49    begin
  50       if Related_Id = Empty then
  51          Typ := New_Internal_Entity (Ekind, Scope_Id, Sloc (Related_Nod), 'T');
  52          Set_Public_Status (Typ);
  53
  54       else
  55          Typ := New_External_Entity
  56            (Ekind, Scope_Id, Sloc (Related_Nod), Related_Id, Suffix,
  57                Suffix_Index, 'T');
  58       end if;
  59
  60       Init_Size_Align (Typ);
  61       Set_Etype (Typ, Any_Type);
  62       Set_Is_Itype (Typ);
  63       Set_Associated_Node_For_Itype (Typ, Related_Nod);
  64
  65       if In_Deleted_Code
  66         and then not ASIS_Mode
  67       then
  68          Set_Is_Frozen (Typ);
  69       end if;
  70
  71       return Typ;
  72    end Create_Itype;
  73
  74    ---------------------------------
  75    -- Create_Null_Excluding_Itype --
  76    ---------------------------------
  77
  78    function Create_Null_Excluding_Itype
  79       (T           : Entity_Id;
  80        Related_Nod : Node_Id;
  81        Scope_Id    : Entity_Id := Current_Scope) return Entity_Id
  82    is
  83       I_Typ        : Entity_Id;
  84
  85    begin
  86       pragma Assert (Is_Access_Type (T));
  87
  88       I_Typ := Create_Itype (Ekind       => E_Access_Subtype,
  89                              Related_Nod => Related_Nod,
  90                              Scope_Id    => Scope_Id);
  91
  92       Set_Directly_Designated_Type (I_Typ, Directly_Designated_Type (T));
  93       Set_Etype                    (I_Typ, T);
  94       Init_Size_Align              (I_Typ);
  95       Set_Depends_On_Private       (I_Typ, Depends_On_Private (T));
  96       Set_Is_Public                (I_Typ, Is_Public          (T));
  97       Set_From_With_Type           (I_Typ, From_With_Type     (T));
  98       Set_Is_Access_Constant       (I_Typ, Is_Access_Constant (T));
  99       Set_Is_Generic_Type          (I_Typ, Is_Generic_Type    (T));
 100       Set_Is_Volatile              (I_Typ, Is_Volatile        (T));
 101       Set_Treat_As_Volatile        (I_Typ, Treat_As_Volatile  (T));
 102       Set_Is_Atomic                (I_Typ, Is_Atomic          (T));
 103       Set_Is_Ada_2005_Only         (I_Typ, Is_Ada_2005_Only   (T));
 104       Set_Can_Never_Be_Null        (I_Typ);
 105
 106       return I_Typ;
 107    end Create_Null_Excluding_Itype;
 108
 109 end Itypes;