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unit SpaceToTab;
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is SpaceToTab, 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 4 Jan 2002
convert spaces tabs }
uses SwitchableVisitor;
type
TSpaceToTab = class(TSwitchableVisitor)
private
fsSpaces: string;
protected
function EnabledVisitSourceToken(const pcNode: TObject): boolean; override;
public
constructor Create; override;
function IsIncludedInSettings: boolean; override;
end;
implementation
uses
SysUtils,
{ local }
JcfStringUtils,
JcfSettings, SourceToken, Tokens, FormatFlags;
constructor TSpaceToTab.Create;
begin
inherited;
fsSpaces := string(StrRepeat(NativeSpace, FormattingSettings.Spaces.SpacesForTab));
FormatFlags := FormatFlags + [eAddSpace, eRemoveSpace];
end;
function TSpaceToTab.EnabledVisitSourceToken(const pcNode: TObject): Boolean;
var
lcSourceToken, lcNextToken: TSourceToken;
ls, lsTab: string;
begin
Result := False;
lcSourceToken := TSourceToken(pcNode);
{ work only on whitespace tokens.
Indent spaces also occur in multiline comments, but leave them alone }
if (lcSourceToken.TokenType <> ttWhiteSpace) then
exit;
{ Merge following space tokens
can't pass property as var parameter so ls local var is used }
ls := lcSourceToken.SourceCode;
lcNextToken := lcSourceToken.NextToken;
while (lcNextToken <> nil) and (lcNextToken.TokenType = ttWhiteSpace) do
begin
ls := ls + lcNextToken.SourceCode;
lcNextToken.SourceCode := '';
lcNextToken := lcNextToken.NextToken;
end;
lsTab := NativeTab;
StrReplace(ls, fsSpaces, lsTab, [rfReplaceAll]);
lcSourceToken.SourceCode := ls;
end;
function TSpaceToTab.IsIncludedInSettings: boolean;
begin
Result := FormattingSettings.Spaces.SpacesToTabs;
end;
end.
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