gcc/ada/sem_elim.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S E M _ E L I M                              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1997-2017, 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 contains the routines used to process the Eliminate pragma
  27
  28 with Types; use Types;
  29
  30 package Sem_Elim is
  31
  32    procedure Initialize;
  33    --  Initialize for new main source program
  34
  35    procedure Process_Eliminate_Pragma
  36      (Pragma_Node         : Node_Id;
  37       Arg_Unit_Name       : Node_Id;
  38       Arg_Entity          : Node_Id;
  39       Arg_Parameter_Types : Node_Id;
  40       Arg_Result_Type     : Node_Id;
  41       Arg_Source_Location : Node_Id);
  42    --  Process eliminate pragma (given by Pragma_Node). The number of
  43    --  arguments has been checked, as well as possible optional identifiers,
  44    --  but no other checks have been made. This subprogram completes the
  45    --  checking, and then if the pragma is well formed, makes appropriate
  46    --  entries in the internal tables used to keep track of Eliminate pragmas.
  47    --  The other five arguments are expressions (rather than pragma argument
  48    --  associations) for the possible pragma arguments. A parameter that
  49    --  is not present is set to Empty.
  50
  51    procedure Check_Eliminated (E : Entity_Id);
  52    --  Checks if entity E is eliminated, and if so sets the Is_Eliminated
  53    --  flag on the given entity.
  54
  55    procedure Check_For_Eliminated_Subprogram (N : Node_Id; S : Entity_Id);
  56    --  Check that the subprogram S (or its ultimate parent in the case of a
  57    --  derived subprogram or renaming) has not been eliminated. An error will
  58    --  be flagged if the subprogram has been eliminated, unless the node N
  59    --  occurs within an eliminated subprogram or within a generic unit. The
  60    --  error will be posted on N.
  61
  62    procedure Eliminate_Error_Msg (N : Node_Id; E : Entity_Id);
  63    --  Called by the front-end on encountering a reference to an eliminated
  64    --  subprogram. N is the node for the reference (such as occurs in a call,
  65    --  a protected call or an  attribute), and E is the entity of the
  66    --  subprogram that has been eliminated.
  67
  68 end Sem_Elim;