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) 1992-2019, 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 --  Semantic processing for distribution annex facilities
  27
  28 with Snames; use Snames;
  29 with Types;  use Types;
  30
  31 package Sem_Dist is
  32
  33    function Get_PCS_Name return PCS_Names;
  34    --  Return the name of a literal of type DSA_Implementation_Name in package
  35    --  System.Partition_Interface indicating what PCS is currently in use.
  36
  37    function Get_PCS_Version return Int;
  38    --  Return the version number of the PCS API implemented by the PCS.
  39    --  The consistency of this version with the one expected by Exp_Dist
  40    --  (Exp_Dist.PCS_Version_Number) in Rtsfind.RTE.Check_RPC.
  41    --  If no PCS version information is available, 0 is returned.
  42
  43    function Is_Valid_Remote_Object_Type (E : Entity_Id) return Boolean;
  44    --  True if tagged type E is a valid candidate as the root type of the
  45    --  designated type for a RACW, i.e. a tagged limited private type, or a
  46    --  limited interface type, or a private extension of such a type.
  47
  48    procedure Add_Stub_Constructs (N : Node_Id);
  49    --  Create the stubs constructs for a remote call interface package
  50    --  specification or body or for a shared passive specification. For caller
  51    --  stubs, expansion takes place directly in the specification and no
  52    --  additional compilation unit is created.
  53
  54    function Build_RAS_Primitive_Specification
  55      (Subp_Spec          : Node_Id;
  56       Remote_Object_Type : Node_Id) return Node_Id;
  57    --  Build a subprogram specification for the primitive operation of the
  58    --  Remote_Object_Type used to implement a remote access-to-subprogram
  59    --  type whose parameter profile is given by specification Subp_Spec.
  60
  61    function Is_All_Remote_Call (N : Node_Id) return Boolean;
  62    --  Check whether a function or procedure call should be expanded into
  63    --  a remote call, because the entity is declared in a package decl that
  64    --  is not currently in scope, and the proper pragmas apply.
  65
  66    procedure Process_Partition_Id (N : Node_Id);
  67    --  Replace attribute reference with call to runtime function. The result
  68    --  is converted to the context type, because the attribute yields a
  69    --  universal integer value.
  70
  71    procedure Process_Remote_AST_Attribute (N : Node_Id; New_Type : Entity_Id);
  72    --  Given N, an access attribute reference node whose prefix is a
  73    --  remote subprogram, rewrite N with a call to a conversion function
  74    --  whose return type is New_Type.
  75
  76    procedure Process_Remote_AST_Declaration (N : Node_Id);
  77    --  Given N, an access to subprogram type declaration node in RCI or remote
  78    --  types unit, build a new record (fat pointer) type declaration using the
  79    --  old Defining_Identifier of N and a link to the old declaration node N
  80    --  whose Defining_Identifier is changed. We also construct declarations of
  81    --  two subprograms in the unit specification which handle remote access to
  82    --  subprogram type (fat pointer) dereference and the unit receiver that
  83    --  handles remote calls (from remote access to subprogram type values.)
  84
  85    function Remote_AST_E_Dereference (P : Node_Id) return Boolean;
  86    --  If the prefix of an explicit dereference is a record type that
  87    --  represent the fat pointer for an Remote access to subprogram, in the
  88    --  context of a call, rewrite the enclosing call node into remote call,
  89    --  the first actual of which is the fat pointer. Return true if the
  90    --  context is correct and the transformation took place.
  91
  92    function Remote_AST_I_Dereference (P : Node_Id) return Boolean;
  93    --  If P is a record type that represents the fat pointer for a remote
  94    --  access to subprogram, and P is the prefix of a call, insert an explicit
  95    --  dereference and perform the transformation described for the previous
  96    --  function.
  97
  98    function Remote_AST_Null_Value
  99      (N   : Node_Id;
 100       Typ : Entity_Id) return Boolean;
 101    --  If N is a null value and Typ a remote access to subprogram type, this
 102    --  function will check if null needs to be replaced with an aggregate and
 103    --  will return True in this case. Otherwise, it will return False.
 104
 105    function Package_Specification_Of_Scope (E : Entity_Id) return Node_Id;
 106    --  Return the N_Package_Specification corresponding to a scope E
 107
 108    function Is_RACW_Stub_Type_Operation (Op : Entity_Id) return Boolean;
 109    --  True when Op is a primitive operation of an RACW stub type
 110
 111 end Sem_Dist;