<s>
QtScript	B-Language
is	O
a	O
scripting	B-Language
engine	I-Language
that	O
has	O
been	O
part	O
of	O
the	O
Qt	B-Language
cross-platform	B-Operating_System
application	B-Application
framework	I-Application
since	O
version	O
4.3.0	O
.	O
</s>
<s>
It	O
was	O
first	O
deprecated	O
and	O
then	O
dropped	O
as	O
of	O
Qt	B-Language
6.5	O
(	O
which	O
has	O
Qt	B-Language
QML	B-Language
as	O
replacement	O
)	O
.	O
</s>
<s>
The	O
scripting	B-Language
language	I-Language
is	O
based	O
on	O
the	O
ECMAScript	B-Language
standard	O
with	O
a	O
few	O
extensions	O
,	O
such	O
as	O
QObject-style	O
signal	O
and	O
slot	O
connections	O
.	O
</s>
<s>
The	O
library	O
contains	O
the	O
engine	O
,	O
and	O
a	O
C++	B-Language
API	O
for	O
evaluating	O
QtScript	B-Language
code	O
and	O
exposing	O
custom	O
QObject-derived	O
C++	B-Language
classes	O
to	O
QtScript	B-Language
.	O
</s>
<s>
The	O
QtScript	B-Language
Binding	O
Generator	O
provides	O
bindings	O
for	O
the	O
Qt	B-Language
API	O
to	O
access	O
directly	O
from	O
ECMAScript	B-Language
.	O
</s>
<s>
QtScript	B-Language
and	O
the	O
binding	O
generator	O
are	O
used	O
for	O
Amarok	B-Language
2	I-Language
's	O
scripting	O
system	O
.	O
</s>
<s>
The	O
current	O
(	O
as	O
of	O
Qt	B-Language
4.7	O
)	O
implementation	O
uses	O
JavaScriptCore	O
and	O
will	O
not	O
be	O
further	O
developed	O
.	O
</s>
<s>
The	O
module	O
was	O
deprecated	O
as	O
of	O
Qt	B-Language
5.5	O
.	O
</s>
<s>
An	O
earlier	O
and	O
unrelated	O
scripting	B-Language
engine	I-Language
,	O
called	O
Qt	B-Language
Script	I-Language
for	O
Applications	O
(	O
QSA	O
)	O
,	O
was	O
shipped	O
by	O
Trolltech	O
as	O
a	O
separate	O
Qt-based	O
library	O
,	O
dual-licensed	O
under	O
GPL	B-License
and	O
a	O
commercial	O
license	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
QtScript	B-Language
,	O
QSA	O
has	O
been	O
deprecated	O
and	O
reached	O
its	O
end	O
of	O
life	O
in	O
2008	O
.	O
</s>
