File : 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) 1992-2013, 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
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 with Targparm; use Targparm;
32 with Uintp; use Uintp;
33
34 package 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
121 end Itypes;