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(*
***************************************************************************
* *
* 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. *
* *
* 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. *
* *
* 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 *
* obtain it by writing to the Free Software Foundation, *
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
***************************************************************************
Author: Mattias Gaertner
Abstract:
Demonstration of how to add the missing IFDEFs, that h2pas forgets to add
to the implementation, and how to remove unneeded IFDEFs.
Usage:
fixh2pasdirectives [-name1] [+name2] ... [filename]
Parameters starting with - are macros that should be set to 'undefined',
that means {$IFNDEF NAME} will be true.
Parameters starting with + are macros that should be set to 'defined',
that means {$IFDEF NAME} will be true.
All other macros are treated as 'any'.
Names are case insensitive.
Otherwise the parameter is used as a filename to load.
Example:
./fixh2pasdirectives -ENDIAN_BIG -Debug +FPC scanexamples/missingh2pasdirectives.pas
This will set ENDIAN_BIG and Debug to undefined and FPC is set to '1'.
*)
program FixH2PASDirectives;
{$mode objfpc}{$H+}
uses
Classes, SysUtils, CodeCache, CodeToolManager, DirectivesTree;
var
Filename: string;
Code: TCodeBuffer;
Tree: TCompilerDirectivesTree;
Changed: Boolean;
Pass: Integer;
i: Integer;
p: String;
Undefines: TStringList;
Defines: TStringList;
begin
Undefines:=nil;
Defines:=nil;
Filename:=SetDirSeparators('scanexamples/missingh2pasdirectives.pas');
// parse parameters
for i:=1 to ParamCount do begin
p:=ParamStr(i);
if p='' then continue;
if p[1]='-' then begin
if Undefines=nil then Undefines:=TStringList.Create;
Undefines.Add(copy(p,2,length(p)));
end
else if p[1]='+' then begin
if Defines=nil then Defines:=TStringList.Create;
Defines.Add(copy(p,2,length(p)));
end else
Filename:=p;
end;
if Undefines<>nil then begin
writeln('Undefines: ');
writeln(Undefines.Text);
end;
if Defines<>nil then begin
writeln('Defines: ');
writeln(Defines.Text);
end;
// load the file
Filename:=ExpandFileName(Filename);
Code:=CodeToolBoss.LoadFile(Filename,false,false);
if Code=nil then
raise Exception.Create('loading failed '+Filename);
// parse the directives
Tree:=TCompilerDirectivesTree.Create;
Tree.Parse(Code,CodeToolBoss.GetNestedCommentsFlagForFile(Code.Filename));
writeln('-----------------------------------');
writeln('h2pas created these directives:');
Tree.WriteDebugReport;
// add missing directives
Changed:=false;
Tree.FixMissingH2PasDirectives(Changed);
writeln('-----------------------------------');
writeln('after adding the missing directives:');
Tree.WriteDebugReport;
// reduce directives
Pass:=0;
repeat
inc(Pass);
Changed:=false;
Tree.ReduceCompilerDirectives(Undefines,Defines,Changed);
if not Changed then break;
writeln('-----------------------------------');
writeln('after reduce number ',Pass,':');
Tree.WriteDebugReport;
until false;
writeln('-----------------------------------');
writeln('Source:');
writeln(Code.Source);
end.
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