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) 1992-2007, 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 3,  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 COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Atree; use Atree;
  27 with Opt;   use Opt;
  28 with Sem;   use Sem;
  29 with Sinfo; use Sinfo;
  30 with Stand; use Stand;
  31
  32 package body Itypes is
  33
  34    ------------------
  35    -- Create_Itype --
  36    ------------------
  37
  38    function Create_Itype
  39      (Ekind        : Entity_Kind;
  40       Related_Nod  : Node_Id;
  41       Related_Id   : Entity_Id := Empty;
  42       Suffix       : Character := ' ';
  43       Suffix_Index : Nat       := 0;
  44       Scope_Id     : Entity_Id := Current_Scope) return Entity_Id
  45    is
  46       Typ : Entity_Id;
  47
  48    begin
  49       if Related_Id = Empty then
  50          Typ := New_Internal_Entity (Ekind, Scope_Id, Sloc (Related_Nod), 'T');
  51          Set_Public_Status (Typ);
  52
  53       else
  54          Typ := New_External_Entity
  55            (Ekind, Scope_Id, Sloc (Related_Nod), Related_Id, Suffix,
  56                Suffix_Index, 'T');
  57       end if;
  58
  59       Init_Size_Align (Typ);
  60       Set_Etype (Typ, Any_Type);
  61       Set_Is_Itype (Typ);
  62       Set_Associated_Node_For_Itype (Typ, Related_Nod);
  63
  64       if In_Deleted_Code
  65         and then not ASIS_Mode
  66       then
  67          Set_Is_Frozen (Typ);
  68       end if;
  69
  70       return Typ;
  71    end Create_Itype;
  72
  73    ---------------------------------
  74    -- Create_Null_Excluding_Itype --
  75    ---------------------------------
  76
  77    function Create_Null_Excluding_Itype
  78       (T           : Entity_Id;
  79        Related_Nod : Node_Id;
  80        Scope_Id    : Entity_Id := Current_Scope) return Entity_Id
  81    is
  82       I_Typ        : Entity_Id;
  83
  84    begin
  85       pragma Assert (Is_Access_Type (T));
  86
  87       I_Typ := Create_Itype (Ekind       => E_Access_Subtype,
  88                              Related_Nod => Related_Nod,
  89                              Scope_Id    => Scope_Id);
  90
  91       Set_Directly_Designated_Type (I_Typ, Directly_Designated_Type (T));
  92       Set_Etype                    (I_Typ, T);
  93       Init_Size_Align              (I_Typ);
  94       Set_Depends_On_Private       (I_Typ, Depends_On_Private (T));
  95       Set_Is_Public                (I_Typ, Is_Public          (T));
  96       Set_From_With_Type           (I_Typ, From_With_Type     (T));
  97       Set_Is_Access_Constant       (I_Typ, Is_Access_Constant (T));
  98       Set_Is_Generic_Type          (I_Typ, Is_Generic_Type    (T));
  99       Set_Is_Volatile              (I_Typ, Is_Volatile        (T));
 100       Set_Treat_As_Volatile        (I_Typ, Treat_As_Volatile  (T));
 101       Set_Is_Atomic                (I_Typ, Is_Atomic          (T));
 102       Set_Is_Ada_2005_Only         (I_Typ, Is_Ada_2005_Only   (T));
 103       Set_Can_Never_Be_Null        (I_Typ);
 104
 105       return I_Typ;
 106    end Create_Null_Excluding_Itype;
 107
 108 end Itypes;