1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
|
{ the extended class has higher priority than the parent class when
searching for symbols }
program tchlp41;
{$ifdef fpc}
{$mode delphi}
{$endif}
{$apptype console}
type
TTest = class
function Test(aRecurse: Boolean): Integer;
end;
TTestHelper = class helper for TTest
function Test(aRecurse: Boolean): Integer;
end;
TTestHelperSub = class helper(TTestHelper) for TTest
function Test(aRecurse: Boolean): Integer;
end;
function TTest.Test(aRecurse: Boolean): Integer;
begin
Result := 1;
end;
function TTestHelper.Test(aRecurse: Boolean): Integer;
begin
Result := 2;
end;
function TTestHelperSub.Test(aRecurse: Boolean): Integer;
begin
if aRecurse then
Result := inherited Test{declaration:TTest.Test}(False)
else
Result := 3;
end;
var
t: TTest;
res: Integer;
begin
t := TTest.Create;
res := t.Test{declaration:TTestHelperSub.Test}(True);
Writeln('t.Test: ', res);
if res <> 1 then
Halt(1);
Writeln('ok');
end.
|