more `<> nil` and `= nil` replaced with isAss/isNotAss

and inline those helpers

src/u_ceproject.pas

@@ -706,7 +706,7 @@ begin
   // field is specified
   if fOutputFilename.isNotEmpty then
   begin
-    if (fSymStringExpander <> nil) then
+    if fSymStringExpander.isAssigned then
       fOutputFilename := fSymStringExpander.expand(fOutputFilename);
     fOutputFilename := expandFilenameEx(fBasePath, fOutputFilename);
     {$IFDEF WINDOWS}

src/u_ceprojeditor.lfm

@@ -147,12 +147,12 @@ inherited ProjectConfigurationWidget: TProjectConfigurationWidget
     end
   end
   inherited contextMenu: TPopupMenu
-    left = 8
+    Left = 8
-    top = 8
+    Top = 8
   end
   object imgList: TImageList[2]
-    left = 40
+    Left = 40
-    top = 8
+    Top = 8
     Bitmap = {
       4C690200000010000000100000008D8B89008D8B89008F8D8B008F8D8B008C8A
       880092908E00908E8CFF8F8D8BFF908E8CFF92908E008F8D8B008F8D8B008F8D

src/u_ceprojeditor.pas

@@ -225,7 +225,7 @@ begin
   fProj.beginUpdate;
   try
     src_prop := src_list.Find(propstr);
-    if src_prop = nil then
+    if src_prop <> nil then
       exit;
     storage.AObject := getGridTarget;
     storage.StoreAnyProperty(src_prop);

src/u_common.pas

@@ -64,8 +64,8 @@ type
 
   // sugar for classes
   TObjectHelper = class helper for TObject
-    function isNotAssigned: boolean;
+    function isNotAssigned: boolean; inline;
-    function isAssigned: boolean;
+    function isAssigned: boolean; inline;
   end;
 
   IDexedBaseInterface = interface
@@ -73,8 +73,8 @@ type
 
   // sugar for interfaces
   TDexedInterfaceHelper = type helper for IDexedBaseInterface
-    function isNotAssigned: boolean;
+    function isNotAssigned: boolean; inline;
-    function isAssigned: boolean;
+    function isAssigned: boolean; inline;
   end;
 
   // maybe one day, sugar for events
@@ -85,8 +85,8 @@ type
 
   // sugar for pointers
   TPointerHelper = type helper for Pointer
-    function isNotAssigned: boolean;
+    function isNotAssigned: boolean; inline;
-    function isAssigned: boolean;
+    function isAssigned: boolean; inline;
   end;
 
   // sugar for strings
@@ -956,7 +956,7 @@ begin
       listFiles(files, pth, true);
       for fname in files do
       begin
-        if exts = nil then
+        if exts.isNotAssigned then
           list.Add(fname)
         else
         begin

src/u_d2syn.pas

@@ -1203,7 +1203,7 @@ end;
 
 procedure TSynD2Syn.ResetRange;
 begin
-  if fCurrRange = nil then
+  if fCurrRange.isNotAssigned then
     fCurrRange := TSynD2SynRange.Create(nil)
   else
     fCurrRange.Clear;

src/u_dmdwrap.pas

@@ -1684,7 +1684,7 @@ var
   fe: boolean;
   i: integer;
 begin
-  if (base = nil) or (base = self) then
+  if base.isNotAssigned or (base = self) then
   begin
     fDocOpts.getOpts(list);
     fDebugOpts.getOpts(list);

src/u_gdb.pas

@@ -1921,7 +1921,7 @@ const
   asmFlavorStr: array[TAsmSyntax] of string = ('intel','att');
 begin
   clearDisplays;
-  if (fDebugTargetKind = dtkProject) and (fProj = nil) then
+  if (fDebugTargetKind = dtkProject) and fProj.isNotAssigned then
   begin
     dlgOkInfo('No project to debug', 'GDB commander');
     exit;
@@ -2084,7 +2084,7 @@ begin
   dbgeeOptsEd.ItemIndex:=-1;
   dbgeeOptsEd.TIObject := nil;
   case fDebugTargetKind of
-    dtkProject  : if fProj <> nil then
+    dtkProject  : if fProj.isAssigned then
       nme := fProj.filename;
     dtkRunnable : if fDoc.isAssigned then
       nme := fDoc.filename;
@@ -2727,7 +2727,7 @@ procedure TGdbWidget.gdboutJsonize(sender: TObject);
 var
   str: string;
 begin
-  if fMsg = nil then
+  if fMsg.isNotAssigned then
     exit;
 
   fLog.Clear;

src/u_interfaces.pas

@@ -597,7 +597,7 @@ end;
 {$REGION ISingleService getters ----------------------------------------------}
 function getMessageDisplay(var obj: IMessagesDisplay): IMessagesDisplay;
 begin
-  if obj = nil then
+  if obj.isNotAssigned then
     obj := EntitiesConnector.getSingleService('IMessagesDisplay') as IMessagesDisplay;
   exit(obj);
 end;
@@ -609,7 +609,7 @@ end;
 
 function getprocInputHandler(var obj: IProcInputHandler): IProcInputHandler;
 begin
-  if obj = nil then
+  if obj.isNotAssigned then
     obj := EntitiesConnector.getSingleService('IProcInputHandler') as IProcInputHandler;
   exit(obj);
 end;
@@ -621,7 +621,7 @@ end;
 
 function getMultiDocHandler(var obj: IMultiDocHandler): IMultiDocHandler;
 begin
-  if obj = nil then
+  if obj.isNotAssigned then
     obj := EntitiesConnector.getSingleService('IMultiDocHandler') as IMultiDocHandler;
   exit(obj);
 end;

src/u_libman.pas

@@ -561,7 +561,7 @@ var
   lib: TLibraryItem;
   i: Integer;
 begin
-  if fMsgs = nil then
+  if fMsgs.isNotAssigned then
     fMsgs := getMessageDisplay;
   // no selector = all libs
   if aliases.isNotAssigned then
@@ -599,7 +599,7 @@ var
   dep: TLibraryItem;
   sel: TLibraryList;
 begin
-  if fMsgs = nil then
+  if fMsgs.isNotAssigned then
     fMsgs := getMessageDisplay;
   imp := TStringList.Create;
   sel := TLibraryList.create;

src/u_libmaneditor.pas

@@ -113,7 +113,7 @@ procedure TLibManEditorWidget.updateButtonsState;
 var
   i: TIconScaledSize;
 begin
-  btnReg.Enabled := (fProj <> nil) and fProj.Filename.fileExists;
+  btnReg.Enabled := fProj.isAssigned and fProj.Filename.fileExists;
   btnOpenProj.Enabled := List.Selected.isAssigned and
     List.Selected.SubItems[2].fileExists;
   i := GetIconScaledSize;
@@ -152,7 +152,7 @@ end;
 
 procedure TLibManEditorWidget.projChanged(project: ICommonProject);
 begin
-  if fProj = nil then
+  if fProj.isNotAssigned then
     exit;
   if fProj <> project then
     exit;
@@ -688,7 +688,7 @@ var
   row: TListItem;
   itf: IMessagesDisplay;
 begin
-  if fProj = nil then
+  if fProj.isNotAssigned then
     exit;
 
   fname := fProj.outputFilename;

src/u_main.pas

@@ -3921,7 +3921,7 @@ begin
       exit;
   fProjectGroup.closeGroup;
   fProjectGroup.openGroup(TMenuItem(Sender).Hint);
-  if (fProj = nil) and (fProjectGroup.getProjectIndex < fProjectGroup.projectCount) then
+  if fProj.isNotAssigned and (fProjectGroup.getProjectIndex < fProjectGroup.projectCount) then
     fProjectGroup.getProject(fProjectGroup.getProjectIndex).activate();
 end;
 
@@ -4053,7 +4053,7 @@ var
   s1: string;
   s2: string;
 begin
-  if fProj = nil then
+  if fProj.isNotAssigned then
     exit;
 
   pth := exeFullName('dscanner' + exeExt);
@@ -4249,7 +4249,7 @@ begin
   finally
     free;
   end;
-  if (fProj = nil) and (fProjectGroup.getProjectIndex < fProjectGroup.projectCount) then
+  if fProj.isNotAssigned and (fProjectGroup.getProjectIndex < fProjectGroup.projectCount) then
     fProjectGroup.getProject(fProjectGroup.getProjectIndex).activate();
 end;
 

src/u_messages.lfm

@@ -48,7 +48,7 @@ inherited MessagesWidget: TMessagesWidget
       OnResize = toolbarResize
       object sep: TDexedToolButton[0]
         Left = 832
-        Height = 28
+        Height = 5
         Hint = 'Clean filtered messages'
         Top = 0
         AutoSize = True
@@ -65,7 +65,7 @@ inherited MessagesWidget: TMessagesWidget
       end
       object button2: TDexedToolButton[2]
         Left = 257
-        Height = 28
+        Height = 5
         Top = 0
         AutoSize = True
         Caption = 'button2'
@@ -82,7 +82,7 @@ inherited MessagesWidget: TMessagesWidget
       end
       object button4: TDexedToolButton[4]
         Left = 171
-        Height = 28
+        Height = 5
         Top = 0
         AutoSize = True
         Caption = 'button4'
@@ -99,7 +99,7 @@ inherited MessagesWidget: TMessagesWidget
       end
       object button6: TDexedToolButton[6]
         Left = 113
-        Height = 28
+        Height = 5
         Top = 0
         AutoSize = True
         Caption = 'button6'
@@ -116,7 +116,7 @@ inherited MessagesWidget: TMessagesWidget
       end
       object button8: TDexedToolButton[8]
         Left = 62
-        Height = 28
+        Height = 5
         Top = 0
         AutoSize = True
         Caption = 'button8'
@@ -158,7 +158,7 @@ inherited MessagesWidget: TMessagesWidget
       end
       object sepCat: TDexedToolButton[12]
         Left = 29
-        Height = 28
+        Height = 5
         Top = 0
         AutoSize = True
         Caption = 'sepCat'
@@ -168,7 +168,7 @@ inherited MessagesWidget: TMessagesWidget
     end
   end
   inherited contextMenu: TPopupMenu
-    left = 32
+    Left = 32
-    top = 40
+    Top = 40
   end
 end

src/u_messages.pas

@@ -776,7 +776,7 @@ begin
       clearbyContext(fCtxt);
     amcEdit: if fDoc.isAssigned then
       clearbyData(fDoc);
-    amcProj: if fProj <> nil then
+    amcProj: if fProj.isAssigned then
       clearbyData(fProj);
   end;
 end;
@@ -1293,7 +1293,7 @@ begin
         getMultiDocHandler.openDocument(ident);
         exit(true);
       end;
-      if fProj <> nil then
+      if fProj.isAssigned then
       begin
         // if fname relative to project path
         absName := expandFilenameEx(fProj.filename.extractFileDir + DirectorySeparator, ident);

src/u_mru.pas

@@ -238,7 +238,7 @@ procedure TMRUProjectList.projClosing(project: ICommonProject);
 var
   fname: string;
 begin
-  if project = nil then
+  if project.isNotAssigned then
     exit;
 
   fname := project.filename;

src/u_observer.pas

@@ -174,7 +174,7 @@ end;
 
 procedure TEntitiesConnector.addSubject(subject: TObject);
 begin
-  if (subject as ISubject) = nil then
+  if (subject as ISubject).isNotAssigned then
     exit;
   if fSubjects.IndexOf(subject) <> -1 then
     exit;
@@ -188,7 +188,7 @@ var
 begin
   fObservers.Remove(observer);
   for i := 0 to fSubjects.Count - 1 do
-    if fSubjects[i] <> nil then
+    if fSubjects[i].isAssigned then
       (fSubjects[i] as ISubject).removeObserver(observer);
   tryUpdate;
 end;

src/u_optionseditor.pas

@@ -208,7 +208,7 @@ begin
   end else
   begin
     dt := PCategoryData(selCat.Selected.Data);
-    if dt^.container.isNotAssigned or (dt^.observer = nil) then
+    if dt^.container.isNotAssigned or dt^.observer.isNotAssigned then
       exit;
     if dt^.observer.optionedOptionsModified() then
     begin

src/u_processes.pas

@@ -102,7 +102,7 @@ implementation
 
 procedure killProcess(var proc: TDexedProcess);
 begin
-  if proc = nil then
+  if proc.isNotAssigned then
     exit;
   if proc.Running then
     proc.Terminate(0);
@@ -217,7 +217,7 @@ procedure TDexedProcess.fillOutputStack;
     c: integer;
   begin
     s := outStr.size;
-    while (inStr <> nil) and (inStr.NumBytesAvailable > 0) do
+    while inStr.isAssigned and (inStr.NumBytesAvailable > 0) do
     begin
       outStr.SetSize(s + 1024);
       c := inStr.Read((outStr.Memory + s)^, 1024);

src/u_projgroup.pas

@@ -212,13 +212,13 @@ end;
 
 procedure TProjectGroup.projClosing(project: ICommonProject);
 begin
-  if (project <> nil) and (project = fFreeStanding) then
+  if project.isAssigned and (project = fFreeStanding) then
     fFreeStanding := nil;
 end;
 
 procedure TProjectGroup.projFocused(project: ICommonProject);
 begin
-  if (project <> nil) and not project.inGroup then
+  if project.isAssigned and not project.inGroup then
     fFreeStanding := project;
 end;
 
@@ -490,8 +490,8 @@ end;
 
 procedure TProjectGroupItem.lazyLoad;
 begin
-  if fProj = nil then
+  if fProj.isAssigned then
-  begin
+    exit;
 
   //setActiveConfigurationIndex changes the project
   //modified flag
@@ -504,11 +504,10 @@ begin
 
   projectGroup.restoreModified;
 end;
-end;
 
 destructor TProjectGroupItem.destroy;
 begin
-  if fProj <> nil then
+  if fProj.isAssigned then
     fProj.getProject.free;
   fProj := nil;
   inherited;
@@ -634,7 +633,7 @@ begin
       exit;
     for fname in Files do
     begin
-      if projectGroup.findProject(fname.normalizePath) <> nil then
+      if projectGroup.findProject(fname.normalizePath).isAssigned then
         continue;
       projectGroup.addItem(fname.normalizePath);
       added := true;
@@ -648,15 +647,13 @@ end;
 
 procedure TProjectGroupWidget.btnFreeFocusClick(Sender: TObject);
 begin
-  if fFreeProj <> nil then
+  if fFreeProj.isAssigned then
     subjProjFocused(fProjSubj, fFreeProj);
 end;
 
 procedure TProjectGroupWidget.btnAddUnfocusedClick(Sender: TObject);
 begin
-  if fFreeProj = nil then
+  if fFreeProj.isNotAssigned or not fFreeProj.filename.fileExists then
-    exit;
-  if not fFreeProj.filename.fileExists then
     exit;
   projectGroup.addProject(fFreeProj);
   fFreeProj := nil;
@@ -806,7 +803,7 @@ begin
     lstProj.ItemIndex:= i;
   end;
   lstProj.EndUpdate;
-  if fFreeProj <> nil then
+  if fFreeProj.isAssigned then
   begin
     if fFreeProj.filename.fileExists then
       case fFreeProj.getFormat of

src/u_projinspect.pas

@@ -238,7 +238,7 @@ end;
 
 procedure TProjectInspectWidget.actBuildExecute(sender: TObject);
 begin
-  if fProj <> nil then
+  if fProj.isAssigned then
   begin
     actOpenFileExecute(sender);
     fProj.compile;

src/u_search.lfm

@@ -259,12 +259,12 @@ inherited SearchWidget: TSearchWidget
     end
   end
   inherited contextMenu: TPopupMenu
-    left = 216
+    Left = 216
-    top = 16
+    Top = 16
   end
   object imgList: TImageList[2]
-    left = 248
+    Left = 248
-    top = 16
+    Top = 16
     Bitmap = {
       4C690200000010000000100000007B7977007B7977007B7977FF73716FFF6D6B
       69FF696665FF625F5EFF615E5D007E7C7A007B7977FF73716FFF6D6B69FF6966

src/u_search.pas

@@ -390,7 +390,7 @@ var
   h: IMultiDocHandler;
 begin
   if (fDoc.isNotAssigned and (fFindScope <> scProj)) or
-     ((fProj = nil) and (fFindScope = scProj)) then
+     (fProj.isNotAssigned and (fFindScope = scProj)) then
         exit;
 
   fSearchMru.Insert(0,fToFind);
@@ -829,7 +829,7 @@ var
   hasTxt: boolean;
 begin
   canAll := ((fDoc.isAssigned and (fFindScope <> scProj)) or
-            ((fFindScope = scProj) and (fProj <> nil)));
+            ((fFindScope = scProj) and fProj.isAssigned));
   hasTxt := fToFind.isNotEmpty and not fToFind.isBlank;
   btnFind.Enabled := fDoc.isAssigned and hasTxt;
   btnFindAll.Enabled := canAll and hasTxt;

src/u_symstring.pas

@@ -190,7 +190,7 @@ begin
   fNeedUpdate := false;
 
   hasNativeProj := fProj.isAssigned;
-  hasProjItf := fProjInterface <> nil;
+  hasProjItf := fProjInterface.isAssigned;
   hasDoc := fDoc.isAssigned;
   if fExp.isNotAssigned then
     fExp := getExplorer;

src/u_synmemo.pas

@@ -1065,7 +1065,7 @@ begin
   fScrollMemo := TScrollMemo.construct(self);
 
   i := getLifeTimeManager();
-  if (i <> nil) then
+  if i.isAssigned then
     fLifeTimeManager := i.asObject;
 
   OnShowHint:= @showHintEvent;

src/u_todolist.pas

@@ -434,9 +434,9 @@ begin
   c := getContext;
   case c of
     tcNone: exit;
-    tcProject: if (fProj = nil) or fProj.sourcesCount.equals(0) then
+    tcProject: if fProj.isNotAssigned or fProj.sourcesCount.equals(0) then
       exit;
-    tcFile: if fDoc = nil then
+    tcFile: if fDoc.isNotAssigned then
       exit;
   end;
 

src/u_tools.pas

@@ -219,11 +219,11 @@ begin
   u_processes.killProcess(fProcess);
   fTerminatedFlag := false;
 
-  if fMsgs = nil then
+  if fMsgs.isNotAssigned then
     fMsgs := getMessageDisplay;
   if fClearMessages then
     fMsgs.clearByContext(amcMisc);
-  if fSymStringExpander = nil then
+  if fSymStringExpander.isNotAssigned then
     fSymStringExpander:= getSymStringExpander;
 
   if askConfirmation and (dlgOkCancel(format(confSpec, [toolAlias])) <> mrOk) then

src/u_widget.lfm

@@ -9,6 +9,7 @@ object DexedWidget: TDexedWidget
   ClientWidth = 332
   ShowHint = True
   ShowInTaskBar = stNever
+  LCLVersion = '2.0.10.0'
   object Back: TPanel
     Left = 0
     Height = 121

src/u_widget.pas

@@ -208,7 +208,7 @@ begin
   if isDockable then
   begin
     win := DockMaster.GetAnchorSite(self);
-    if win <> nil then
+    if win.isAssigned then
     begin
       win.Show;
       win.BringToFront;