[thirdparty/gcc.git] / gcc / ada / itypes.adb

------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                              I T Y P E S                                 --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1992-2019, Free Software Foundation, Inc.         --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license.          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

with Atree;    use Atree;
with Opt;      use Opt;
with Sem;      use Sem;
with Sinfo;    use Sinfo;
with Stand;    use Stand;
with Targparm; use Targparm;
with Uintp;    use Uintp;

package body Itypes is

   ------------------
   -- Create_Itype --
   ------------------

   function Create_Itype
     (Ekind        : Entity_Kind;
      Related_Nod  : Node_Id;
      Related_Id   : Entity_Id := Empty;
      Suffix       : Character := ' ';
      Suffix_Index : Int       := 0;
      Scope_Id     : Entity_Id := Current_Scope) return Entity_Id
   is
      Typ : Entity_Id;

   begin
      --  Should comment setting of Public_Status here ???

      if Related_Id = Empty then
         Typ := New_Internal_Entity (Ekind, Scope_Id, Sloc (Related_Nod), 'T');
         Set_Public_Status (Typ);

      else
         Typ :=
           New_External_Entity
             (Ekind, Scope_Id, Sloc (Related_Nod), Related_Id, Suffix,
              Suffix_Index, 'T');
      end if;

      --  Make sure Esize (Typ) was properly initialized, it should be since
      --  New_Internal_Entity/New_External_Entity call Init_Size_Align.

      pragma Assert (Esize (Typ) = Uint_0);

      Set_Etype (Typ, Any_Type);
      Set_Is_Itype (Typ);
      Set_Associated_Node_For_Itype (Typ, Related_Nod);

      if In_Deleted_Code
        and then not ASIS_Mode
      then
         Set_Is_Frozen (Typ);
      end if;

      if Ekind in Access_Subprogram_Kind then
         Set_Can_Use_Internal_Rep (Typ, not Always_Compatible_Rep_On_Target);
      end if;

      return Typ;
   end Create_Itype;

   ---------------------------------
   -- Create_Null_Excluding_Itype --
   ---------------------------------

   function Create_Null_Excluding_Itype
      (T           : Entity_Id;
       Related_Nod : Node_Id;
       Scope_Id    : Entity_Id := Current_Scope) return Entity_Id
   is
      I_Typ        : Entity_Id;

   begin
      pragma Assert (Is_Access_Type (T));

      I_Typ := Create_Itype (Ekind       => E_Access_Subtype,
                             Related_Nod => Related_Nod,
                             Scope_Id    => Scope_Id);

      Set_Directly_Designated_Type (I_Typ, Directly_Designated_Type (T));
      Set_Etype                    (I_Typ, Base_Type (T));
      Set_Depends_On_Private       (I_Typ, Depends_On_Private (T));
      Set_Is_Public                (I_Typ, Is_Public          (T));
      Set_From_Limited_With        (I_Typ, From_Limited_With  (T));
      Set_Is_Access_Constant       (I_Typ, Is_Access_Constant (T));
      Set_Is_Generic_Type          (I_Typ, Is_Generic_Type    (T));
      Set_Is_Volatile              (I_Typ, Is_Volatile        (T));
      Set_Treat_As_Volatile        (I_Typ, Treat_As_Volatile  (T));
      Set_Is_Atomic                (I_Typ, Is_Atomic          (T));
      Set_Is_Ada_2005_Only         (I_Typ, Is_Ada_2005_Only   (T));
      Set_Is_Ada_2012_Only         (I_Typ, Is_Ada_2012_Only   (T));
      Set_Can_Never_Be_Null        (I_Typ);

      return I_Typ;
   end Create_Null_Excluding_Itype;

end Itypes;
Commit	Line	Data
38cbfe40 RK	1	------------------------------------------------------------------------------
	2	-- --
	3	-- GNAT COMPILER COMPONENTS --
	4	-- --
	5	-- I T Y P E S --
	6	-- --
	7	-- B o d y --
	8	-- --
1d005acc	9	-- Copyright (C) 1992-2019, Free Software Foundation, Inc. --
38cbfe40 RK	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- --
b5c84c3c	13	-- ware Foundation; either version 3, or (at your option) any later ver- --
38cbfe40 RK	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 --
b5c84c3c RD	18	-- Public License distributed with GNAT; see file COPYING3. If not, go to --
b5c84c3c RD	19	-- http://www.gnu.org/licenses for a complete copy of the license. --
38cbfe40 RK	20	-- --
38cbfe40 RK	21	-- GNAT was originally developed by the GNAT team at New York University. --
71ff80dc	22	-- Extensive contributions were provided by Ada Core Technologies Inc. --
38cbfe40 RK	23	-- --
	24	------------------------------------------------------------------------------
	25
4b790886 BD	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;
99cf6c77	32	with Uintp; use Uintp;
38cbfe40 RK	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 := ' ';
2e5df295	45	Suffix_Index : Int := 0;
d26dc4b5	46	Scope_Id : Entity_Id := Current_Scope) return Entity_Id
38cbfe40 RK	47	is
	48	Typ : Entity_Id;
	49
	50	begin
99cf6c77 RD	51	-- Should comment setting of Public_Status here ???
99cf6c77 RD	52
38cbfe40 RK	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
99cf6c77 RD	58	Typ :=
	59	New_External_Entity
	60	(Ekind, Scope_Id, Sloc (Related_Nod), Related_Id, Suffix,
	61	Suffix_Index, 'T');
38cbfe40 RK	62	end if;
38cbfe40 RK	63
99cf6c77 RD	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
38cbfe40 RK	69	Set_Etype (Typ, Any_Type);
	70	Set_Is_Itype (Typ);
	71	Set_Associated_Node_For_Itype (Typ, Related_Nod);
fbf5a39b	72
657a9dd9 AC	73	if In_Deleted_Code
	74	and then not ASIS_Mode
	75	then
fbf5a39b AC	76	Set_Is_Frozen (Typ);
	77	end if;
	78
0503c53a	79	if Ekind in Access_Subprogram_Kind then
4b790886 BD	80	Set_Can_Use_Internal_Rep (Typ, not Always_Compatible_Rep_On_Target);
	81	end if;
	82
38cbfe40 RK	83	return Typ;
	84	end Create_Itype;
	85
ec53a6da JM	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
d26dc4b5	104	Set_Directly_Designated_Type (I_Typ, Directly_Designated_Type (T));
b66c3ff4	105	Set_Etype (I_Typ, Base_Type (T));
d26dc4b5	106	Set_Depends_On_Private (I_Typ, Depends_On_Private (T));
bfc8aa81	107	Set_Is_Public (I_Typ, Is_Public (T));
7b56a91b	108	Set_From_Limited_With (I_Typ, From_Limited_With (T));
d26dc4b5	109	Set_Is_Access_Constant (I_Typ, Is_Access_Constant (T));
bfc8aa81 RD	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));
599a7411	115	Set_Is_Ada_2012_Only (I_Typ, Is_Ada_2012_Only (T));
d26dc4b5	116	Set_Can_Never_Be_Null (I_Typ);
ec53a6da JM	117
	118	return I_Typ;
	119	end Create_Null_Excluding_Itype;
	120
38cbfe40	121	end Itypes;