{
 ***************************************************************************
 *                                                                         *
 *   This source is free software; you can redistribute it and/or modify   *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
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 *   This code is distributed in the hope that it will be useful, but      *
 *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   General Public License for more details.                              *
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 *   A copy of the GNU General Public License is available on the World    *
 *   Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also      *
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 ***************************************************************************

  Author: Mattias Gaertner

  Abstract:
    Demonstration of how to reduce IFDEFs in a source file.
}
program ReduceIFDEFs;

{$mode objfpc}{$H+}

uses
  SysUtils, CodeCache, CodeToolManager, DirectivesTree;
  
var
  Filename: string;
  Code: TCodeBuffer;
  Tree: TCompilerDirectivesTree;
  Changed: Boolean;
begin
  // load the file
  if ParamCount>=1 then
    Filename:=ExpandFileName(ParamStr(1))
  else
    Filename:=ExpandFileName(SetDirSeparators('scanexamples/uglyifdefs.pas'));
  Code:=CodeToolBoss.LoadFile(Filename,false,false);
  if Code=nil then
    raise Exception.Create('loading failed '+Filename);

  // parse directives
  Tree:=TCompilerDirectivesTree.Create;
  Tree.Parse(Code,CodeToolBoss.GetNestedCommentsFlagForFile(Code.Filename));

  // complete reduce
  repeat
    Changed:=false;
    Tree.ReduceCompilerDirectives(nil,nil,Changed);
    Tree.WriteDebugReport;
  until not Changed;

  // write the new source:
  writeln('-----------------------------------');
  writeln(Code.Source);
  writeln('-----------------------------------');
end.