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) 1992-2005, 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,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, 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 Snames; use Snames;
  30 with Types;  use Types;
  31
  32 package Sem_Dist is
  33
  34    function Get_PCS_Name return PCS_Names;
  35    --  Return the name of a literal of type System.Partition_Interface.
  36    --  DSA_Implementation_Type indicating what PCS is currently in use.
  37
  38    procedure Add_Stub_Constructs (N : Node_Id);
  39    --  Create the stubs constructs for a remote call interface package
  40    --  specification or body or for a shared passive specification. For caller
  41    --  stubs, expansion takes place directly in the specification and no
  42    --  additional compilation unit is created.
  43
  44    function Build_RAS_Primitive_Specification
  45      (Subp_Spec          : Node_Id;
  46       Remote_Object_Type : Node_Id) return Node_Id;
  47    --  Build a subprogram specification for the primitive operation of the
  48    --  Remote_Object_Type used to implement a remote access-to-subprogram
  49    --  type whose parameter profile is given by specification Subp_Spec.
  50
  51    function Is_All_Remote_Call (N : Node_Id) return Boolean;
  52    --  Check whether a function or procedure call should be expanded into
  53    --  a remote call, because the entity is declared in a package decl that
  54    --  is not currently in scope, and the proper pragmas apply.
  55
  56    procedure Process_Partition_Id (N : Node_Id);
  57    --  Replace attribute reference with call to runtime function. The result
  58    --  is converted to the context type, because the attribute yields a
  59    --  universal integer value.
  60
  61    procedure Process_Remote_AST_Attribute (N : Node_Id; New_Type : Entity_Id);
  62    --  Given N, an access attribute reference node whose prefix is a
  63    --  remote subprogram, rewrite N with a call to a conversion function
  64    --  whose return type is New_Type.
  65
  66    procedure Process_Remote_AST_Declaration (N : Node_Id);
  67    --  Given N, an access to subprogram type declaration node in RCI or remote
  68    --  types unit, build a new record (fat pointer) type declaration using the
  69    --  old Defining_Identifier of N and a link to the old declaration node N
  70    --  whose Defining_Identifier is changed. We also construct declarations of
  71    --  two subprograms in the unit specification which handle remote access to
  72    --  subprogram type (fat pointer) dereference and the unit receiver that
  73    --  handles remote calls (from remote access to subprogram type values.)
  74
  75    function Remote_AST_E_Dereference (P : Node_Id) return Boolean;
  76    --  If the prefix of an explicit dereference is a record type that
  77    --  represent the fat pointer for an Remote access to subprogram, in the
  78    --  context of a call, rewrite the enclosing call node into remote call,
  79    --  the first actual of which is the fat pointer. Return true if the
  80    --  context is correct and the transformation took place.
  81
  82    function Remote_AST_I_Dereference (P : Node_Id) return Boolean;
  83    --  If P is a record type that represents the fat pointer for a remote
  84    --  access to subprogram, and P is the prefix of a call, insert an explicit
  85    --  dereference and perform the transformation described for the previous
  86    --  function.
  87
  88    function Remote_AST_Null_Value
  89      (N   : Node_Id;
  90       Typ : Entity_Id) return Boolean;
  91    --  If N is a null value and Typ a remote access to subprogram type, this
  92    --  function will check if null needs to be replaced with an aggregate and
  93    --  will return True in this case. Otherwise, it will return False.
  94
  95    function Package_Specification_Of_Scope (E : Entity_Id) return Node_Id;
  96    --  Return the N_Package_Specification corresponding to a scope E
  97
  98 end Sem_Dist;