gcc/ada/local_restrict.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                        L O C A L _ R E S T R I C T                       --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2023, 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 --  This package deals with the implementation of the Local_Restrictions aspect
  27
  28 with Types;  use Types;
  29
  30 package Local_Restrict is
  31    type Local_Restriction is (No_Secondary_Stack, No_Heap_Allocations);
  32    --  A local restriction can be mentioned in a Local_Restrictions aspect
  33    --  specification. A local restriction might apply, for example, to a
  34    --  single subprogram. No_Secondary_Stack corresponds to the
  35    --  GNAT-defined restriction of the same name. No_Heap_Allocations
  36    --  corresponds to the conjunction of the RM-defined restrictions
  37    --  No_Allocators and No_Implicit_Heap_Allocations. If a subprogram is
  38    --  subject to a local restriction, then any subprogram that it calls
  39    --  shall be known to satisfy that restriction.
  40
  41    type Local_Restriction_Set is array (Local_Restriction) of Boolean;
  42
  43    procedure Check_Call (Call : Node_Id; Callee : Entity_Id := Empty);
  44    --  Check whether a call violates any local restrictions that are
  45    --  in effect. An empty callee indicates that the callee should be
  46    --  conservatively assumed to violate any local restrictions that
  47    --  are in effect (for example, for an entry call or a call through
  48    --  an access-to-subprogram value).
  49
  50    procedure Check_Overriding (Overrider_Op, Overridden_Op : Entity_Id);
  51    --  Check that all of the local restrictions in effect for
  52    --  Overridden_Op are also in effect for Overrider_Op.
  53
  54    procedure Check_Actual_Subprogram_For_Instance
  55      (Actual_Subp_Name : Node_Id; Formal_Subp : Entity_Id);
  56    --  Check that all of the local restrictions in effect for
  57    --  Formal_Subp are also in effect for Actual_Subp.
  58
  59 end Local_Restrict;