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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- E X P _ D I S T -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2009, 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 3, 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 COPYING3. If not, go to -- -- http://www.gnu.org/licenses for a complete copy of the license. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package contains utility routines used for the generation of the -- stubs relevant to the distribution annex. with Namet; use Namet; with Snames; use Snames; with Types; use Types; package Exp_Dist is PCS_Version_Number : constant array (PCS_Names) of Int := (Name_No_DSA => 1, Name_GARLIC_DSA => 1, Name_PolyORB_DSA => 3); -- PCS interface version. This is used to check for consistency between the -- compiler used to generate distribution stubs and the PCS implementation. -- It must be incremented whenever a change is made to the generated code -- for distribution stubs that would result in the compiler being -- incompatible with an older version of the PCS, or vice versa. procedure Add_RAST_Features (Vis_Decl : Node_Id); -- Build and add bodies for dereference and 'Access subprograms for a -- remote access to subprogram type. Vis_Decl is the declaration node for -- the RAS type. procedure Add_RACW_Features (RACW_Type : Entity_Id); -- Add RACW features. If the RACW and the designated type are not in the -- same scope, then Add_RACW_Primitive_Declarations_And_Bodies is called -- automatically since we do know the primitive list already. procedure Add_RACW_Primitive_Declarations_And_Bodies (Designated_Type : Entity_Id; Insertion_Node : Node_Id; Body_Decls : List_Id); -- Add primitive for the stub type, and the RPC receiver. The declarations -- are inserted after Insertion_Node, while the bodies are appended at the -- end of Body_Decls. procedure Remote_Types_Tagged_Full_View_Encountered (Full_View : Entity_Id); -- When a full view with a private view is encountered in a Remote_Types -- package and corresponds to a tagged type, then this procedure is called -- to generate the needed RACW features if it is needed. procedure RACW_Type_Is_Asynchronous (RACW_Type : Entity_Id); -- This subprogram must be called when it is detected that the RACW type -- is asynchronous. procedure Expand_Calling_Stubs_Bodies (Unit_Node : Node_Id); -- Call the expansion phase for the calling stubs. The code will be added -- at the end of the compilation unit, which is a package spec. procedure Expand_Receiving_Stubs_Bodies (Unit_Node : Node_Id); -- Call the expansion phase for the receiving stubs. The code will be added -- at the end of the compilation unit, which may be either a package spec -- or a package body. procedure Expand_All_Calls_Remote_Subprogram_Call (N : Node_Id); -- Rewrite a call to a subprogram located in a Remote_Call_Interface -- package to which the pragma All_Calls_Remote applies so that it -- goes through the PCS. N is either an N_Procedure_Call_Statement -- or an N_Function_Call node. procedure Build_Passive_Partition_Stub (U : Node_Id); -- Build stub for a shared passive package. U is the analyzed -- compilation unit for a package declaration. function Build_Subprogram_Id (Loc : Source_Ptr; E : Entity_Id) return Node_Id; -- Build a literal representing the remote subprogram identifier of E function Copy_Specification (Loc : Source_Ptr; Spec : Node_Id; Ctrl_Type : Entity_Id := Empty; New_Name : Name_Id := No_Name) return Node_Id; -- Build a subprogram specification from another one, or from an -- access-to-subprogram definition. If Ctrl_Type is not Empty, and any -- controlling formal of an anonymous access type is found, then it is -- replaced by an access to Ctrl_Type. If New_Name is given, then it will -- be used as the name for the newly created spec. function Corresponding_Stub_Type (RACW_Type : Entity_Id) return Entity_Id; -- Return the stub type associated with the given RACW type function Underlying_RACW_Type (RAS_Typ : Entity_Id) return Entity_Id; -- Given a remote access-to-subprogram type or its equivalent -- record type, return the RACW type generated to implement it. procedure Append_RACW_Bodies (Decls : List_Id; Spec_Id : Entity_Id); -- Append the unanalyzed subprogram bodies generated to support RACWs -- declared in the given package spec (RACW stream subprograms, calling -- stubs primitive operations) to the given list (which is expected to be -- the declarations list for the corresponding package body, if there is -- one). In the case where a body is present, the subprogram bodies must -- not be generated in the package spec because this would cause an -- incorrect attempt to freeze Taft amendment types declared in the spec. function Make_Transportable_Check (Loc : Source_Ptr; Expr : Node_Id) return Node_Id; -- Generate a check that the given expression (an actual in a remote -- subprogram call, or the return value of a function in the context of -- a remote call) satisfies the requirements for being transportable -- across partitions, raising Program_Error if it does not. ---------------------------------------------------------------- -- Functions for expansion of PolyORB/DSA specific attributes -- ---------------------------------------------------------------- function Build_From_Any_Call (Typ : Entity_Id; N : Node_Id; Decls : List_Id) return Node_Id; -- Build call to From_Any attribute function of type Typ with expression -- N as actual parameter. Decls is the declarations list for an appropriate -- enclosing scope of the point where the call will be inserted; if the -- From_Any attribute for Typ needs to be generated at this point, its -- declaration is appended to Decls. function Build_To_Any_Call (N : Node_Id; Decls : List_Id) return Node_Id; -- Build call to To_Any attribute function with expression as actual -- parameter. Decls is the declarations list for an appropriate -- enclosing scope of the point where the call will be inserted; if -- the To_Any attribute for Typ needs to be generated at this point, -- its declaration is appended to Decls. function Build_TypeCode_Call (Loc : Source_Ptr; Typ : Entity_Id; Decls : List_Id) return Node_Id; -- Build call to TypeCode attribute function for Typ. Decls is the -- declarations list for an appropriate enclosing scope of the point -- where the call will be inserted; if the To_Any attribute for Typ -- needs to be generated at this point, its declaration is appended -- to Decls. end Exp_Dist;