gcc/ada/exp_dist.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             E X P _ D I S T                              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2007, 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 utility routines used for the generation of the
  27 --  stubs relevant to the distribution annex.
  28
  29 with Namet; use Namet;
  30 with Types; use Types;
  31
  32 package Exp_Dist is
  33
  34    PCS_Version_Number : constant := 1;
  35    --  PCS interface version. This is used to check for consistency between the
  36    --  compiler used to generate distribution stubs and the PCS implementation.
  37    --  It must be incremented whenever a change is made to the generated code
  38    --  for distribution stubs that would result in the compiler being
  39    --  incompatible with an older version of the PCS, or vice versa.
  40
  41    procedure Add_RAST_Features (Vis_Decl : Node_Id);
  42    --  Build and add bodies for dereference and 'Access subprograms for a
  43    --  remote access to subprogram type. Vis_Decl is the declaration node for
  44    --  the RAS type.
  45
  46    procedure Add_RACW_Features (RACW_Type : Entity_Id);
  47    --  Add RACW features. If the RACW and the designated type are not in the
  48    --  same scope, then Add_RACW_Primitive_Declarations_And_Bodies is called
  49    --  automatically since we do know the primitive list already.
  50
  51    procedure Add_RACW_Primitive_Declarations_And_Bodies
  52      (Designated_Type : Entity_Id;
  53       Insertion_Node  : Node_Id;
  54       Body_Decls      : List_Id);
  55    --  Add primitive for the stub type, and the RPC receiver. The declarations
  56    --  are inserted after insertion_Node, while the bodies are appened at the
  57    --  end of Decls.
  58
  59    procedure Remote_Types_Tagged_Full_View_Encountered
  60      (Full_View : Entity_Id);
  61    --  When a full view with a private view is encountered in a Remote_Types
  62    --  package and corresponds to a tagged type, then this procedure is called
  63    --  to generate the needed RACW features if it is needed.
  64
  65    procedure RACW_Type_Is_Asynchronous (RACW_Type : Entity_Id);
  66    --  This subprogram must be called when it is detected that the RACW type
  67    --  is asynchronous.
  68
  69    procedure Expand_Calling_Stubs_Bodies (Unit_Node : Node_Id);
  70    --  Call the expansion phase for the calling stubs. The code will be added
  71    --  at the end of the compilation unit, which is a package spec.
  72
  73    procedure Expand_Receiving_Stubs_Bodies (Unit_Node : Node_Id);
  74    --  Call the expansion phase for the calling stubs. The code will be added
  75    --  at the end of the compilation unit, which may be either a package spec
  76    --  or a package body.
  77
  78    procedure Expand_All_Calls_Remote_Subprogram_Call (N : Node_Id);
  79    --  Rewrite a call to a subprogram located in a Remote_Call_Interface
  80    --  package on which the pragma All_Calls_Remote applies so that it
  81    --  goes through the PCS. N is either an N_Procedure_Call_Statement
  82    --  or an N_Function_Call node.
  83
  84    procedure Build_Passive_Partition_Stub (U : Node_Id);
  85    --  Build stub for a shared passive package. U is the analyzed
  86    --  compilation unit for a package declaration.
  87
  88    function Build_Subprogram_Id
  89      (Loc : Source_Ptr;
  90       E   : Entity_Id) return Node_Id;
  91    --  Build a literal representing the remote subprogram identifier of E
  92
  93    function Copy_Specification
  94      (Loc         : Source_Ptr;
  95       Spec        : Node_Id;
  96       Ctrl_Type   : Entity_Id := Empty;
  97       New_Name    : Name_Id   := No_Name) return Node_Id;
  98    --  Build a subprogram specification from another one, or from an
  99    --  access-to-subprogram definition. If Ctrl_Type is not Empty, and any
 100    --  controlling formal of an anonymous access type is found, then it is
 101    --  replaced by an access to Ctrl_Type. If New_Name is given, then it will
 102    --  be used as the name for the newly created spec.
 103
 104    function Corresponding_Stub_Type (RACW_Type : Entity_Id) return Entity_Id;
 105    --  Return the stub type associated with the given RACW type
 106
 107    function Underlying_RACW_Type (RAS_Typ : Entity_Id) return Entity_Id;
 108    --  Given a remote access-to-subprogram type or its equivalent
 109    --  record type, return the RACW type generated to implement it.
 110
 111    procedure Append_RACW_Bodies (Decls : List_Id; Spec_Id : Entity_Id);
 112    --  Append the unanalyzed subprogram bodies generated to support RACWs
 113    --  declared in the given package spec (RACW stream subprograms, calling
 114    --  stubs primitive operations) to the given list (which is expected to be
 115    --  the declarations list for the corresponding package body, if there is
 116    --  one). In the case where a body is present, the subprogram bodies must
 117    --  not be generated in the package spec because this would cause an
 118    --  incorrect attempt to freeze Taft amendment types declared in the spec.
 119
 120    function Make_Transportable_Check
 121      (Loc  : Source_Ptr;
 122       Expr : Node_Id) return Node_Id;
 123    --  Generate a check that the given expression (an actual in a remote
 124    --  subprogram call, or the return value of a function in the context of
 125    --  a remote call) satisfies the requirements for being transportable
 126    --  across partitions, raising Program_Error if it does not.
 127
 128 end Exp_Dist;