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--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                             E X P _ S T R M                              --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 1992-2007, 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.      --

--                                                                          --

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--  Routines to build stream subprograms for composite types

with Exp_Tss; use Exp_Tss;

with Types;   use Types;

package Exp_Strm is

   function Build_Elementary_Input_Call (N : Node_Id) return Node_Id;

   --  Build call to Read attribute function for elementary type. Also used

   --  for Input attributes for elementary types with an appropriate extra

   --  assignment statement. N is the attribute reference node.

   function Build_Elementary_Write_Call (N : Node_Id) return Node_Id;

   --  Build call to Write attribute function for elementary type. Also used

   --  for Output attributes for elementary types (since the effect of the

   --  two attributes is identical for elementary types). N is the attribute

   --  reference node.

   function Build_Stream_Attr_Profile

     (Loc : Source_Ptr;

      Typ : Entity_Id;

      Nam : TSS_Name_Type) return List_Id;

   --  Builds the parameter profile for the stream attribute identified by

   --  the given name. This is used for the tagged case to build the spec

   --  for the primitive operation.

   --  The following routines build procedures and functions for stream

   --  attributes applied to composite types. For each of these routines,

   --  Loc is used to provide the location for the constructed subprogram

   --  declaration. Typ is the base type to which the subprogram applies

   --  (i.e. the base type of the stream attribute prefix). The returned

   --  results are the declaration and name (entity) of the subprogram.

   procedure Build_Array_Input_Function

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Fnam : out Entity_Id);

   --  Build function for Input attribute for array type

   procedure Build_Array_Output_Procedure

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure for Output attribute for array type

   procedure Build_Array_Read_Procedure

     (Nod  : Node_Id;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure for Read attribute for array type. Nod provides the

   --  Sloc value for generated code.

   procedure Build_Array_Write_Procedure

     (Nod  : Node_Id;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure for Write attribute for array type. Nod provides the

   --  Sloc value for generated code.

   procedure Build_Mutable_Record_Read_Procedure

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure to Read a record with default discriminants.

   --  Discriminants must be read explicitly (RM 13.13.2(9)) in the

   --  same manner as is done for 'Input.

   procedure Build_Mutable_Record_Write_Procedure

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure to write a record with default discriminants.

   --  Discriminants must be written explicitly (RM 13.13.2(9)) in

   --  the same manner as is done for 'Output.

   procedure Build_Record_Or_Elementary_Input_Function

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Fnam : out Entity_Id);

   --  Build function for Input attribute for record type or for an

   --  elementary type (the latter is used only in the case where a

   --  user defined Read routine is defined, since in other cases,

   --  Input calls the appropriate runtime library routine directly.

   procedure Build_Record_Or_Elementary_Output_Procedure

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure for Output attribute for record type or for an

   --  elementary type (the latter is used only in the case where a

   --  user defined Write routine is defined, since in other cases,

   --  Output calls the appropriate runtime library routine directly.

   procedure Build_Record_Read_Procedure

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure for Read attribute for record type

   procedure Build_Record_Write_Procedure

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : out Entity_Id);

   --  Build procedure for Write attribute for record type

   procedure Build_Stream_Procedure

     (Loc  : Source_Ptr;

      Typ  : Entity_Id;

      Decl : out Node_Id;

      Pnam : Entity_Id;

      Stms : List_Id;

      Outp : Boolean);

   --  Called to build an array or record stream procedure. The first three

   --  arguments are the same as Build_Record_Or_Elementary_Output_Procedure.

   --  Stms is the list of statements for the body (the declaration list is

   --  always null), and Pnam is the name of the constructed procedure.

   --  Used by Exp_Dist to generate stream-oriented attributes for RACWs.

end Exp_Strm;