Sven Barth wroteYou did put the helper declaration before the implementation of X, right?
Oops!
If you still have a problem, please open a bug report with an example
(cause that should definitely work).
This is from my oiginal code.
I stripped away anything that did not influence this (lots of methods, uses clause for sysutils,class,lazutf8).
======================================
unit thtest;
{$mode objfpc}{$H+}
{$modeswitch typehelpers}
interface
type
TStringArray = array of String;
{ TStringTable }
TStringTable = class
private
FRows: array of TStringArray;
protected
public
procedure DeleteCol(Index: Integer);
function InsertCol(Index: Integer; Values: array of String): Integer;
end;
implementation
{ TStringArrayHelper }
type
TStringArrayHelper = type helper for TStringArray
constructor Create(AValue: TStringArray); overload;
function Insert(Index: Integer; const S: String): Integer;
procedure Delete(Index: Integer);
end;
{ TStringArrayHelper }
constructor TStringArrayHelper.Create(AValue: TStringArray);
begin
Self := AValue;
end;
function TStringArrayHelper.Insert(Index: Integer; const S: String): Integer;
var
i: Integer;
begin
SetLength(Self, Length(Self)+1);
for i := High(Self) downto (Index + 1) do
Self[i] := Self[i-1];
Self[Index] := S;
Result := Index;
end;
procedure TStringArrayHelper.Delete(Index: Integer);
var
i: Integer;
begin
for i := Index to (High(Self) - 1) do
Self[i] := Self[i+1];
SetLength(Self, Length(Self) - 1);
end;
{ TStringTable }
function TStringTable.InsertCol(Index: Integer; Values: array of
String): Integer;
var
i: Integer;
begin
FRows[0].Insert(Index, '');
//for i := Low(FRows) to High(FRows) do
begin
//if (i <= High(Values)) then
FRows[i].Insert(Index, Values[i])
//else
// FRows[i].Insert(Index, '');
end;
Result := Index;
end;
procedure TStringTable.DeleteCol(Index: Integer);
var
i: Integer;
begin
FRows[0].Delete(Index);
end;
end.
======================================
The declaration of the helper is before any location is is used as far as I can see.
thtest.pp(80,12) Fatal: Syntax error, "CREATE" expected but "DELETE" found
Line 80 is:
FRows[0].Delete(Index);
Why does the compile NOT like FRows[0].Delete(), but does not care about the earlier
(line 69) FRows[i].Insert(Index, Values[i]) ??
Even stranger (to me):
If you uncomment
//FRows[0].Insert(Index, '');
at line 65, the compiler will see the error at the above mentioned line 69:
thtest.pp(69,16) Fatal: Syntax error, "CREATE" expected but "INSERT" found
But why does it not fail then at the uncommented line that also calls the Insert method?
NB. These are my compiler options:
-MObjFPC -Scghi -Cirot -g -gl -gh -l -vewnhibq -Filib\i386-win32 -Fu. -FUlib\i386-win32 -FcUTF8
Bart
