* prj-pp.adb : New file.

	* prj-pp.ads : New file.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@51512 138bc75d-0d04-0410-961f-82ee72b054a4

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                               P R J . P P                                --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision$
+--                                                                          --
+--             Copyright (C) 2001 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). --
+--                                                                          --
+------------------------------------------------------------------------------
+--
+--  This package is the Project File Pretty Printer.
+--  It is used to output a project file from a project file tree.
+--  It is used by gnatname to update or create project files.
+--  It is also used GLIDE2 to display project file trees.
+--  It can also be used for debugging purposes for tools that create project
+--  file trees.
+
+with Prj.Tree;
+
+package Prj.PP is
+
+   --  The following access to procedure types are used
+   --  to redirect output when calling Pretty_Print.
+
+   type Write_Char_Ap is access procedure (C : Character);
+
+   type Write_Eol_Ap  is access procedure;
+
+   type Write_Str_Ap is access procedure (S : String);
+
+   procedure Pretty_Print
+     (Project                            : Prj.Tree.Project_Node_Id;
+      Increment                          : Positive      := 3;
+      Eliminate_Empty_Case_Constructions : Boolean       := False;
+      Minimize_Empty_Lines               : Boolean       := False;
+      W_Char                             : Write_Char_Ap := null;
+      W_Eol                              : Write_Eol_Ap  := null;
+      W_Str                              : Write_Str_Ap  := null);
+   --  Output a project file, using either the default output
+   --  routines, or the ones specified by W_Char, W_Eol and W_Str.
+   --
+   --  Increment is the number of spaces for each indentation level.
+   --
+   --  W_Char, W_Eol and W_Str can be used to change the default output
+   --  procedures. The default values force the output to Standard_Output.
+   --
+   --  If Eliminate_Empty_Case_Constructions is True, then case constructions
+   --  and case items that do not include any declarations will not be output.
+   --
+   --  If Minimize_Empty_Lines is True, empty lines will be output only
+   --  after the last with clause, after the line declaring the project name,
+   --  after the last declarative item of the project and before each
+   --  package declaration. Otherwise, more empty lines are output.
+
+private
+
+   procedure Output_Statistics;
+   --  This procedure can be used after one or more calls to Pretty_Print
+   --  to display what Project_Node_Kinds have not been exercised by the
+   --  call(s) to Pretty_Print. It is used only for testing purposes.
+
+end Prj.PP;