lazarus/components/jcf2/Process/Obfuscate/FixCase.pas
paul 2f530e41d5 jcf2: sync with main repository r718
git-svn-id: trunk@17811 -
2008-12-12 02:06:31 +00:00

121 lines
3.3 KiB
ObjectPascal

unit FixCase;
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is FixCase, released May 2003.
The Initial Developer of the Original Code is Anthony Steele.
Portions created by Anthony Steele are Copyright (C) 1999-2008 Anthony Steele.
All Rights Reserved.
Contributor(s): Anthony Steele.
The contents of this file are subject to the Mozilla Public License Version 1.1
(the "License"). you may not use this file except in compliance with the License.
You may obtain a copy of the License at http://www.mozilla.org/NPL/
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied.
See the License for the specific language governing rights and limitations
under the License.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 2 or later (the "GPL")
See http://www.gnu.org/licenses/gpl.html
------------------------------------------------------------------------------*)
{*)}
{$I JcfGlobal.inc}
interface
{ AFS 29 December 2002
Obfusccate - capitalisation
}
uses SwitchableVisitor;
type
TFixCase = class(TSwitchableVisitor)
protected
function EnabledVisitSourceToken(const pcNode: TObject): Boolean; override;
public
constructor Create; override;
end;
implementation
uses
{ delphi }
{$IFNDEF FPC}Windows,{$ENDIF} SysUtils,
{ local }
JcfStringUtils,
Tokens, SourceToken, SettingsTypes,
ParseTreeNodeType, JcfSettings, FormatFlags, TokenUtils;
{ identify the cases where the compiler is case sensitive
don't want ot mess with caps when it affects these issues }
function PutUpWithCompilerBugs(const pt: TSourceToken): boolean;
begin
Result := False;
{ special case - 'Register' (with a capital R) as a procedure name must be preserved
or component registration may not work in some versions of Delphi
This is a known issue in some versions of Delphi
note intentional use of case-sensitive compare }
if (IsIdentifier(pt, idStrict)) and AnsiSameStr(pt.SourceCode, 'Register') and
pt.HasParentNode([nProcedureType, nProcedureDecl, nProcedureHeading]) then
begin
Result := True;
exit;
end;
{ had problems - IDE could not find the base class frame
when the frame's ancestor's name was decapitised
most likely some lazy developer @ borland forgot to match strings without case}
if (pt.WordType in IdentifierTypes) and (pt.HasParentNode(nClassHeritage)) then
begin
Result := True;
exit;
end;
end;
procedure FixCaps(const pt: TSourceToken);
begin
if PutUpWithCompilerBugs(pt) then
exit;
case FormatSettings.Obfuscate.Caps of
ctUpper:
pt.SourceCode := AnsiUpperCase(pt.SourceCode);
ctLower:
pt.SourceCode := AnsiLowerCase(pt.SourceCode);
ctMixed:
pt.SourceCode := StrSmartCase(pt.SourceCode, []);
ctLeaveAlone: ;
end;
end;
constructor TFixCase.Create;
begin
inherited;
FormatFlags := FormatFlags + [eObfuscate];
end;
function TFixCase.EnabledVisitSourceToken(const pcNode: TObject): Boolean;
var
lcSourceToken: TSourceToken;
begin
Result := False;
lcSourceToken := TSourceToken(pcNode);
if (lcSourceToken.TokenType in TextualTokens) and (lcSourceToken.SourceCode <> '') then
FixCaps(lcSourceToken);
end;
end.