1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                              I T Y P E S                                 --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1992-2013, 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
26with Atree;    use Atree;
27with Opt;      use Opt;
28with Sem;      use Sem;
29with Sinfo;    use Sinfo;
30with Stand;    use Stand;
31with Targparm; use Targparm;
32with Uintp;    use Uintp;
33
34package body Itypes is
35
36   ------------------
37   -- Create_Itype --
38   ------------------
39
40   function Create_Itype
41     (Ekind        : Entity_Kind;
42      Related_Nod  : Node_Id;
43      Related_Id   : Entity_Id := Empty;
44      Suffix       : Character := ' ';
45      Suffix_Index : Nat       := 0;
46      Scope_Id     : Entity_Id := Current_Scope) return Entity_Id
47   is
48      Typ : Entity_Id;
49
50   begin
51      --  Should comment setting of Public_Status here ???
52
53      if Related_Id = Empty then
54         Typ := New_Internal_Entity (Ekind, Scope_Id, Sloc (Related_Nod), 'T');
55         Set_Public_Status (Typ);
56
57      else
58         Typ :=
59           New_External_Entity
60             (Ekind, Scope_Id, Sloc (Related_Nod), Related_Id, Suffix,
61              Suffix_Index, 'T');
62      end if;
63
64      --  Make sure Esize (Typ) was properly initialized, it should be since
65      --  New_Internal_Entity/New_External_Entity call Init_Size_Align.
66
67      pragma Assert (Esize (Typ) = Uint_0);
68
69      Set_Etype (Typ, Any_Type);
70      Set_Is_Itype (Typ);
71      Set_Associated_Node_For_Itype (Typ, Related_Nod);
72
73      if In_Deleted_Code
74        and then not ASIS_Mode
75      then
76         Set_Is_Frozen (Typ);
77      end if;
78
79      if Ekind in Access_Subprogram_Kind then
80         Set_Can_Use_Internal_Rep (Typ, not Always_Compatible_Rep_On_Target);
81      end if;
82
83      return Typ;
84   end Create_Itype;
85
86   ---------------------------------
87   -- Create_Null_Excluding_Itype --
88   ---------------------------------
89
90   function Create_Null_Excluding_Itype
91      (T           : Entity_Id;
92       Related_Nod : Node_Id;
93       Scope_Id    : Entity_Id := Current_Scope) return Entity_Id
94   is
95      I_Typ        : Entity_Id;
96
97   begin
98      pragma Assert (Is_Access_Type (T));
99
100      I_Typ := Create_Itype (Ekind       => E_Access_Subtype,
101                             Related_Nod => Related_Nod,
102                             Scope_Id    => Scope_Id);
103
104      Set_Directly_Designated_Type (I_Typ, Directly_Designated_Type (T));
105      Set_Etype                    (I_Typ, Base_Type (T));
106      Set_Depends_On_Private       (I_Typ, Depends_On_Private (T));
107      Set_Is_Public                (I_Typ, Is_Public          (T));
108      Set_From_Limited_With        (I_Typ, From_Limited_With  (T));
109      Set_Is_Access_Constant       (I_Typ, Is_Access_Constant (T));
110      Set_Is_Generic_Type          (I_Typ, Is_Generic_Type    (T));
111      Set_Is_Volatile              (I_Typ, Is_Volatile        (T));
112      Set_Treat_As_Volatile        (I_Typ, Treat_As_Volatile  (T));
113      Set_Is_Atomic                (I_Typ, Is_Atomic          (T));
114      Set_Is_Ada_2005_Only         (I_Typ, Is_Ada_2005_Only   (T));
115      Set_Is_Ada_2012_Only         (I_Typ, Is_Ada_2012_Only   (T));
116      Set_Can_Never_Be_Null        (I_Typ);
117
118      return I_Typ;
119   end Create_Null_Excluding_Itype;
120
121end Itypes;
122