New Language: Ada

From-SVN: r45959

1 files changed, 95 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             S E M _ D I S T                              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision: 1.56 $
+--                                                                          --
+--          Copyright (C) 1992-2000 Free Software Foundation, Inc.          --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
+-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
+-- MA 02111-1307, USA.                                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Semantic processing for distribution annex facilities
+
+with Types; use Types;
+
+package Sem_Dist is
+
+   procedure Add_Stub_Constructs (N : Node_Id);
+   --  Create the stubs constructs for a remote call interface package
+   --  specification or body or for a shared passive specification. For
+   --  caller stubs, expansion takes place directly in the specification and
+   --  no additional compilation unit is created.
+
+   function Is_All_Remote_Call (N : Node_Id) return Boolean;
+   --  Check whether a function or procedure call should be expanded into
+   --  a remote call, because the entity is declared in a package decl that
+   --  is not currently in scope, and the proper pragmas apply.
+
+   procedure Process_Partition_Id (N : Node_Id);
+   --  Replace attribute reference with call to runtime function. The result
+   --  is converted to the context type, because the attribute yields a
+   --  universal integer value.
+
+   procedure Process_Remote_AST_Attribute (N : Node_Id; New_Type : Entity_Id);
+   --  Given N, an access attribute reference node whose prefix is a
+   --  remote subprogram, rewrite N with a call to a conversion function
+   --  whose return type is New_Type.
+
+   procedure Process_Remote_AST_Declaration (N : Node_Id);
+   --  Given N, an access to subprogram type declaration node in RCI or
+   --  remote types unit, build a new record (fat pointer) type declaration
+   --  using the old Defining_Identifier of N and a link to the old
+   --  declaration node N whose Defining_Identifier is changed.
+   --  We also construct declarations of two subprograms in the unit
+   --  specification which handle remote access to subprogram type
+   --  (fat pointer) dereference and the unit receiver that handles
+   --  remote calls (from remote access to subprogram type values.)
+
+   function Remote_AST_E_Dereference (P : Node_Id) return Boolean;
+   --  If the prefix of an explicit dereference is a record type that
+   --  represent the fat pointer for an Remote access to subprogram, in
+   --  the context of a call, rewrite the enclosing call node into a
+   --  remote call, the first actual of which is the fat pointer. Return
+   --  true if the context is correct and the transformation took place.
+
+   function Remote_AST_I_Dereference (P : Node_Id) return Boolean;
+   --  If P is a record type that represents the fat pointer for a remote
+   --  access to subprogram, and P is the prefix of a call, insert an
+   --  explicit dereference and perform the transformation described for
+   --  the previous function.
+
+   function Remote_AST_Null_Value
+     (N    : Node_Id;
+      Typ  : Entity_Id)
+      return Boolean;
+   --  If N is a null value and Typ a remote access to subprogram type,
+   --  this function will check if null needs to be replaced with an
+   --  aggregate and will return True in this case. Otherwise, it will
+   --  return False.
+
+   function Get_Subprogram_Id (E : Entity_Id) return Int;
+   --  Given a subprogram defined in a RCI package, get its subprogram id
+   --  which will be used for remote calls.
+
+   function Package_Specification_Of_Scope (E : Entity_Id) return Node_Id;
+   --  Return the N_Package_Specification corresponding to a scope E
+
+end Sem_Dist;