<s>
The	O
ASM	B-Language
library	O
is	O
a	O
project	O
of	O
the	O
OW2	B-Architecture
consortium	I-Architecture
.	O
</s>
<s>
It	O
provides	O
a	O
simple	O
API	O
for	O
decomposing	O
,	O
modifying	O
,	O
and	O
recomposing	O
binary	O
Java	B-Language
classes	O
(	O
i.e.	O
</s>
<s>
ASM	B-Language
is	O
Java-centric	O
at	O
present	O
,	O
and	O
does	O
not	O
currently	O
have	O
a	O
backend	O
that	O
exposes	O
other	O
bytecode	O
implementations	O
(	O
such	O
as	O
.NET	B-Application
bytecode	O
,	O
Python	B-Language
bytecode	O
,	O
etc	O
.	O
</s>
<s>
The	O
name	O
"	O
ASM	B-Language
"	O
is	O
not	O
an	O
acronym	O
:	O
it	O
is	O
just	O
a	O
reference	O
to	O
the	O
asm	B-Language
keyword	O
of	O
C	O
,	O
which	O
allows	O
some	O
functions	O
to	O
be	O
implemented	O
in	O
assembly	O
language	O
.	O
</s>
<s>
ASM	B-Language
provides	O
a	O
simple	O
library	O
that	O
exposes	O
the	O
internal	O
aggregate	O
components	O
of	O
a	O
given	O
Java	B-Language
class	O
through	O
its	O
visitor	B-Language
oriented	O
API	O
.	O
</s>
<s>
ASM	B-Language
also	O
provides	O
,	O
on	O
top	O
of	O
this	O
visitor	B-Language
API	O
,	O
a	O
tree	O
API	O
that	O
represents	O
classes	O
as	O
object	O
constructs	O
.	O
</s>
<s>
The	O
ASM	B-Language
library	O
has	O
been	O
used	O
in	O
several	O
diverse	O
applications	O
,	O
such	O
as	O
:	O
</s>
<s>
Instrumentation	O
calls	O
that	O
capture	O
performance	O
metrics	O
can	O
be	O
injected	O
into	O
Java	B-Language
class	O
binaries	O
to	O
examine	O
memory/coverage	O
data	O
.	O
</s>
<s>
For	O
example	O
,	O
Groovy	B-Application
uses	O
ASM	B-Language
to	O
generate	O
its	O
bytecode	O
.	O
</s>
<s>
Also	O
,	O
Aspect-Oriented	B-Architecture
additions	O
to	O
the	O
Java	B-Language
language	I-Language
have	O
been	O
implemented	O
by	O
using	O
ASM	B-Language
to	O
decompose	O
class	O
structures	O
for	O
point-cut	O
identification	O
,	O
and	O
then	O
again	O
when	O
reconstituting	O
the	O
class	O
by	O
injecting	O
aspect-related	O
code	O
back	O
into	O
the	O
binary	O
.	O
</s>
<s>
Since	O
version	O
3.2	O
,	O
ASM	B-Language
has	O
added	O
support	O
for	O
the	O
new	O
invokedynamic	O
code	O
,	O
which	O
allows	O
method	O
invocation	O
relying	O
on	O
dynamic	O
type	O
checking	O
on	O
the	O
latest	O
JDK	O
7	O
binaries	O
,	O
thus	O
easing	O
support	O
for	O
dynamically	O
typed	O
languages	O
.	O
</s>
<s>
This	O
table	O
presents	O
only	O
releases	O
with	O
significant	O
steps	O
in	O
ObjectWeb	B-Language
ASM	I-Language
history	O
,	O
aside	O
from	O
versions	O
that	O
mainly	O
fixed	O
bugs	O
and	O
improved	O
performance	O
.	O
</s>
