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unit UsesClauseRemove;
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is UsesClauseRemove.pas, released October 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 October 2003
- massage the uses clause. Remove units
}
uses
{ local }
SourceToken,
SwitchableVisitor;
type
TUsesClauseRemove = class(TSwitchableVisitor)
private
fiCount: integer;
fbDoneInterface, fbDoneImplementation: boolean;
function MatchesSearch(const ps: string): boolean;
protected
function EnabledVisitSourceToken(const pcNode: TObject): Boolean; override;
public
constructor Create; override;
function IsIncludedInSettings: boolean; override;
function FinalSummary(out psMessage: string): boolean; override;
end;
implementation
uses
{ delphi }
SysUtils,
{ local }
JcfSettings,
Tokens,
FormatFlags,
ParseTreeNodeType,
TokenUtils;
constructor TUsesClauseRemove.Create;
begin
inherited;
FormatFlags := FormatFlags + [eFindReplaceUses];
fbDoneInterface := False;
fbDoneImplementation := False;
fiCount := 0;
end;
function TUsesClauseRemove.IsIncludedInSettings: boolean;
begin
with FormattingSettings.UsesClause do
Result := InsertInterfaceEnabled or InsertImplementationEnabled;
end;
function TUsesClauseRemove.EnabledVisitSourceToken(const pcNode: TObject): Boolean;
var
lcSourceToken, lcSepAfter, lcSepBefore: TSourceToken;
lbInterface, lbImplementation: boolean;
begin
Result := False;
if pcNode = nil then
exit;
lcSourceToken := TSourceToken(pcNode);
{ only do this in a uses clause }
if not lcSourceToken.HasParentNode(nUses) then
exit;
lbInterface := lcSourceToken.HasParentNode(nInterfaceSection);
if lbInterface then
lbImplementation := False
else
lbImplementation := lcSourceToken.HasParentNode(nImplementationSection);
if not (lbImplementation or lbInterface) then
exit;
{ only proceed on one of the specified words }
if not (lcSourceToken.TokenType = ttIdentifier) then
exit;
if not MatchesSearch(lcSourceToken.SourceCode) then
exit;
{ throw away the word and the trailing comma, as in uses clause find/replace }
BlankToken(lcSourceToken);
lcSepAfter := lcSourceToken.NextSolidToken;
if lcSepAfter.TokenType = ttComma then
begin
BlankToken(lcSepAfter);
end
else if lcSepAfter.TokenType = ttSemiColon then
begin
{ can't remove the semicolon, but doing nothing
might leave a comma just before it, e.g. "uses foo, ;"
get rid of that comma }
lcSepBefore := lcSourceToken.PriorSolidToken;
if lcSepBefore.TokenType = ttComma then
BlankToken(lcSepBefore)
else if lcSepBefore.TokenType = ttUses then
begin
{ "uses" before, ";" after. There must have been only 1 unit in the uses clause
remove it entirely }
BlankToken(lcSepAfter);
BlankToken(lcSepBefore);
end;
end;
end;
function TUsesClauseRemove.FinalSummary(out psMessage: string): boolean;
begin
Result := (fiCount > 0);
if Result then
begin
psMessage := 'Uses clause removal: ' + IntToStr(fiCount) + ' removals were made';
end
else
begin
psMessage := '';
end;
end;
function TUsesClauseRemove.MatchesSearch(const ps: string): boolean;
begin
Result := FormattingSettings.UsesClause.Remove.IndexOf(ps) >= 0;
end;
end.
|
