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program tforin6;
// test Object enumerator implementation
{$mode objfpc}{$H+}
{$APPTYPE CONSOLE}
type
{ TMyListEnumerator }
TMyListEnumerator = object
private
FCurrent: Integer;
public
constructor Create;
destructor Destroy;
function MoveNext: Boolean;
property Current: Integer read FCurrent;
end;
TMyList = class
end;
{ TMyListEnumerator }
constructor TMyListEnumerator.Create;
begin
WriteLn('create');
FCurrent := 0;
end;
destructor TMyListEnumerator.Destroy;
begin
WriteLn('destroy');
inherited;
end;
function TMyListEnumerator.MoveNext: Boolean;
begin
inc(FCurrent);
Result := FCurrent <= 3;
end;
operator enumerator (AList: TMyList): TMyListEnumerator;
begin
Result.Create;
end;
var
List: TMyList;
i: integer;
begin
List := TMyList.Create;
for i in List do
WriteLn(i);
List.Free;
end.
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