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) 1992-2005 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)
  46       return         Entity_Id
  47    is
  48       Typ : Entity_Id;
  49
  50    begin
  51       if Related_Id = Empty then
  52          Typ := New_Internal_Entity (Ekind, Scope_Id, Sloc (Related_Nod), 'T');
  53          Set_Public_Status (Typ);
  54
  55       else
  56          Typ := New_External_Entity
  57            (Ekind, Scope_Id, Sloc (Related_Nod), Related_Id, Suffix,
  58                Suffix_Index, 'T');
  59       end if;
  60
  61       Init_Size_Align (Typ);
  62       Set_Etype (Typ, Any_Type);
  63       Set_Is_Itype (Typ);
  64       Set_Associated_Node_For_Itype (Typ, Related_Nod);
  65
  66       if In_Deleted_Code
  67         and then not ASIS_Mode
  68       then
  69          Set_Is_Frozen (Typ);
  70       end if;
  71
  72       return Typ;
  73    end Create_Itype;
  74
  75    ---------------------------------
  76    -- Create_Null_Excluding_Itype --
  77    ---------------------------------
  78
  79    function Create_Null_Excluding_Itype
  80       (T           : Entity_Id;
  81        Related_Nod : Node_Id;
  82        Scope_Id    : Entity_Id := Current_Scope) return Entity_Id
  83    is
  84       I_Typ        : Entity_Id;
  85
  86    begin
  87       pragma Assert (Is_Access_Type (T));
  88
  89       I_Typ := Create_Itype (Ekind       => E_Access_Subtype,
  90                              Related_Nod => Related_Nod,
  91                              Scope_Id    => Scope_Id);
  92
  93       Set_Directly_Designated_Type (I_Typ,
  94          Directly_Designated_Type (T));
  95       Set_Etype              (I_Typ, T);
  96       Init_Size_Align        (I_Typ);
  97       Set_Depends_On_Private (I_Typ, Depends_On_Private (T));
  98       Set_Is_Public          (I_Typ, Is_Public (T));
  99       Set_From_With_Type     (I_Typ, From_With_Type (T));
 100       Set_Is_Access_Constant (I_Typ, Is_Access_Constant (T));
 101       Set_Is_Generic_Type    (I_Typ, Is_Generic_Type (T));
 102       Set_Is_Volatile        (I_Typ, Is_Volatile (T));
 103       Set_Treat_As_Volatile  (I_Typ, Treat_As_Volatile (T));
 104       Set_Is_Atomic          (I_Typ, Is_Atomic (T));
 105       Set_Is_Ada_2005        (I_Typ, Is_Ada_2005 (T));
 106       Set_Can_Never_Be_Null  (I_Typ);
 107
 108       return I_Typ;
 109    end Create_Null_Excluding_Itype;
 110
 111 end Itypes;