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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                              S E M _ C H 7                               --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 1992-2005, 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,  51  Franklin  Street,  Fifth  Floor, --

-- Boston, MA 02110-1301, USA.                                              --

--                                                                          --

-- GNAT was originally developed  by the GNAT team at  New York University. --

-- Extensive contributions were provided by Ada Core Technologies Inc.      --

--                                                                          --

------------------------------------------------------------------------------

with Types; use Types;

package Sem_Ch7 is

   procedure Analyze_Package_Body                       (N : Node_Id);

   procedure Analyze_Package_Declaration                (N : Node_Id);

   procedure Analyze_Package_Specification              (N : Node_Id);

   procedure Analyze_Private_Type_Declaration           (N : Node_Id);

   procedure End_Package_Scope (P : Entity_Id);

   --  Calls Uninstall_Declarations, and then pops the scope stack

   procedure Exchange_Declarations (Id : Entity_Id);

   --  Exchange private and full declaration on entry/exit from a package

   --  declaration or body. The semantic links of the respective nodes

   --  are preserved in the exchange.

   procedure Install_Visible_Declarations (P : Entity_Id);

   procedure Install_Private_Declarations (P : Entity_Id);

   --  On entrance to a package body, make declarations in package spec

   --  immediately visible.

   --  When compiling the body of a package,  both routines are called in

   --  succession. When compiling the body of a child package, the call

   --  to Install_Private_Declaration is immediate for private children,

   --  but is deferred until the compilation of the  private part of the

   --  child for public child packages.

   function Unit_Requires_Body (P : Entity_Id) return Boolean;

   --  Check if a unit requires a body. A specification requires a body

   --  if it contains declarations that require completion in a body.

   procedure May_Need_Implicit_Body (E : Entity_Id);

   --  If a package declaration contains tasks and does not require a

   --  body, create an implicit body at the end of the current declarative

   --  part to activate those tasks.

   procedure New_Private_Type (N : Node_Id; Id : Entity_Id; Def : Node_Id);

   --  Common processing for private type declarations and for formal

   --  private type declarations. For private types, N and Def are the type

   --  declaration node; for formal private types, Def is the formal type

   --  definition.

   procedure Uninstall_Declarations (P : Entity_Id);

   --  At the end of a package declaration or body, declarations in the

   --  visible part are no longer immediately visible, and declarations in

   --  the private part are not visible at all. For inner packages, place

   --  visible entities at the end of their homonym chains. For compilation

   --  units, make all entities invisible. In both cases, exchange private

   --  and visible declarations to restore order of elaboration.

end Sem_Ch7;