gcc/ada/sem_dist.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S E M _ D I S T                              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2000 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 2,  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 COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 --  Semantic processing for distribution annex facilities
  28
  29 with Types; use Types;
  30
  31 package Sem_Dist is
  32
  33    procedure Add_Stub_Constructs (N : Node_Id);
  34    --  Create the stubs constructs for a remote call interface package
  35    --  specification or body or for a shared passive specification. For
  36    --  caller stubs, expansion takes place directly in the specification and
  37    --  no additional compilation unit is created.
  38
  39    function Is_All_Remote_Call (N : Node_Id) return Boolean;
  40    --  Check whether a function or procedure call should be expanded into
  41    --  a remote call, because the entity is declared in a package decl that
  42    --  is not currently in scope, and the proper pragmas apply.
  43
  44    procedure Process_Partition_Id (N : Node_Id);
  45    --  Replace attribute reference with call to runtime function. The result
  46    --  is converted to the context type, because the attribute yields a
  47    --  universal integer value.
  48
  49    procedure Process_Remote_AST_Attribute (N : Node_Id; New_Type : Entity_Id);
  50    --  Given N, an access attribute reference node whose prefix is a
  51    --  remote subprogram, rewrite N with a call to a conversion function
  52    --  whose return type is New_Type.
  53
  54    procedure Process_Remote_AST_Declaration (N : Node_Id);
  55    --  Given N, an access to subprogram type declaration node in RCI or
  56    --  remote types unit, build a new record (fat pointer) type declaration
  57    --  using the old Defining_Identifier of N and a link to the old
  58    --  declaration node N whose Defining_Identifier is changed.
  59    --  We also construct declarations of two subprograms in the unit
  60    --  specification which handle remote access to subprogram type
  61    --  (fat pointer) dereference and the unit receiver that handles
  62    --  remote calls (from remote access to subprogram type values.)
  63
  64    function Remote_AST_E_Dereference (P : Node_Id) return Boolean;
  65    --  If the prefix of an explicit dereference is a record type that
  66    --  represent the fat pointer for an Remote access to subprogram, in
  67    --  the context of a call, rewrite the enclosing call node into a
  68    --  remote call, the first actual of which is the fat pointer. Return
  69    --  true if the context is correct and the transformation took place.
  70
  71    function Remote_AST_I_Dereference (P : Node_Id) return Boolean;
  72    --  If P is a record type that represents the fat pointer for a remote
  73    --  access to subprogram, and P is the prefix of a call, insert an
  74    --  explicit dereference and perform the transformation described for
  75    --  the previous function.
  76
  77    function Remote_AST_Null_Value
  78      (N    : Node_Id;
  79       Typ  : Entity_Id)
  80       return Boolean;
  81    --  If N is a null value and Typ a remote access to subprogram type,
  82    --  this function will check if null needs to be replaced with an
  83    --  aggregate and will return True in this case. Otherwise, it will
  84    --  return False.
  85
  86    function Get_Subprogram_Id (E : Entity_Id) return Int;
  87    --  Given a subprogram defined in a RCI package, get its subprogram id
  88    --  which will be used for remote calls.
  89
  90    function Package_Specification_Of_Scope (E : Entity_Id) return Node_Id;
  91    --  Return the N_Package_Specification corresponding to a scope E
  92
  93 end Sem_Dist;