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unit RemoveReturnsAfter;
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is RemoveReturnsAfter, released Octoiber 2007.
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
uses SourceToken, SwitchableVisitor;
type
TRemoveReturnsAfter = class(TSwitchableVisitor)
private
function MaxReturnsAfter(const pcToken: TSourceToken): integer;
protected
function EnabledVisitSourceToken(const pcNode: TObject): Boolean; override;
public
constructor Create; override;
function IsIncludedInSettings: boolean; override;
end;
implementation
uses
JcfSettings, Tokens, TokenUtils, ParseTreeNodeType;
constructor TRemoveReturnsAfter.Create;
begin
inherited;
end;
function TRemoveReturnsAfter.MaxReturnsAfter(const pcToken: TSourceToken): integer;
begin
Result := -1;
// for now, we're only interested in asm blocks
if pcToken.HasParentNode(nAsm) then
begin
// look for the colon of a label
if pcToken.TokenType = ttColon then
begin
if pcToken.HasParentNode(nAsmLabel, 1) then
begin
Result := FormattingSettings.SetAsm.BreaksAfterLabel;
end;
end;
end;
end;
function TRemoveReturnsAfter.EnabledVisitSourceToken(const pcNode: TObject): Boolean;
var
lcSourceToken: TSourceToken;
liMaxReturnCount: integer;
lcNext: TSourceToken;
lcTest: TSourceToken;
liReturnCount: integer;
begin
Result := False;
lcSourceToken := TSourceToken(pcNode);
liMaxReturnCount := MaxReturnsAfter(lcSourceToken);
// -1 is a marker value - no processing needed
if liMaxReturnCount = -1 then
exit;
lcNext := lcSourceToken.NextTokenWithExclusions([ttWhiteSpace, ttReturn]);
liReturnCount := 0;
lcTest := lcSourceToken;
{ remove all surplus returns up to that point }
while (lcTest <> lcNext) do
begin
if (lcTest.TokenType = ttReturn) then
begin
Inc(liReturnCount);
if (liReturnCount > liMaxReturnCount) then
begin
BlankToken(lcTest);
end;
end;
lcTest := lcTest.NextToken;
end;
end;
function TRemoveReturnsAfter.IsIncludedInSettings: boolean;
begin
Result := FormattingSettings.SetAsm.BreaksAfterLabelEnabled;
end;
end.
|
