<s>
EiffelStudio	B-Application
is	O
a	O
development	O
environment	O
for	O
the	O
Eiffel	B-Language
programming	I-Language
language	I-Language
developed	O
and	O
distributed	O
by	O
Eiffel	B-Language
Software	O
.	O
</s>
<s>
EiffelStudio	B-Application
includes	O
a	O
combination	O
of	O
tools	O
integrated	O
under	O
a	O
single	O
user	B-Application
interface	I-Application
:	O
compiler	O
,	O
interpreter	O
,	O
debugger	O
,	O
browser	O
,	O
metrics	O
tool	O
,	O
profiler	O
,	O
diagram	O
and	O
code	O
inspector	O
tool	O
.	O
</s>
<s>
The	O
user	B-Application
interface	I-Application
rests	O
on	O
a	O
number	O
of	O
specific	O
UI	O
paradigms	O
,	O
in	O
particular	O
"	O
pick-and-drop	O
"	O
for	O
effective	O
browsing	O
.	O
</s>
<s>
EiffelStudio	B-Application
is	O
available	O
on	O
a	O
number	O
of	O
platforms	O
including	O
Windows	B-Application
,	O
Linux	B-Application
,	O
Mac	B-Application
OS	I-Application
,	O
Solaris	B-Application
,	O
VMS	B-Operating_System
,	O
RaspberryPi	O
.	O
</s>
<s>
The	O
source	O
is	O
available	O
under	O
GPL	B-License
;	O
other	O
commercial	O
licenses	O
are	O
also	O
available	O
.	O
</s>
<s>
EiffelStudio	B-Application
is	O
an	O
open-source	B-License
development	O
with	O
beta	O
versions	O
of	O
the	O
next	O
release	O
made	O
regularly	O
available	O
.	O
</s>
<s>
The	O
Eiffel	B-Language
community	O
actively	O
participates	O
in	O
its	O
development	O
;	O
its	O
official	O
website	O
is	O
,	O
where	O
projects	O
and	O
resources	O
are	O
listed	O
.	O
</s>
<s>
The	O
source	O
code	O
base	O
is	O
usually	O
available	O
for	O
check-out	O
via	O
Subversion	B-Application
or	O
Git	B-Application
.	O
</s>
<s>
EiffelStudio	B-Application
uses	O
a	O
specific	O
compilation	O
technology	O
known	O
as	O
Melting	O
Ice	O
(	O
claimed	O
by	O
Eiffel	B-Language
Software	O
as	O
a	O
trademark	O
)	O
which	O
integrates	O
compilation	O
proper	O
with	O
interpretation	O
of	O
the	O
elements	O
changed	O
since	O
the	O
last	O
compilation	O
,	O
for	O
very	O
fast	O
turnaround	O
(	O
recompilation	O
time	O
proportional	O
to	O
the	O
size	O
of	O
the	O
change	O
,	O
not	O
the	O
size	O
of	O
the	O
overall	O
program	O
)	O
.	O
</s>
<s>
The	O
interpreter	O
part	O
of	O
EiffelStudio	B-Application
relies	O
on	O
a	O
bytecode-oriented	O
virtual	B-Architecture
machine	I-Architecture
.	O
</s>
<s>
The	O
compiler	O
generates	O
either	O
C	B-Language
or	O
.NET	B-Application
CIL	O
(	O
Common	O
Intermediate	O
Language	O
)	O
.	O
</s>
<s>
The	O
Diagram	O
Tool	O
of	O
EiffelStudio	B-Application
provides	O
a	O
graphical	O
view	O
of	O
software	O
structures	O
.	O
</s>
<s>
The	O
graphical	O
notation	O
is	O
either	O
BON	B-Application
(	O
the	O
Business	B-Application
Object	I-Application
Notation	I-Application
,	O
see	O
bibliography	O
)	O
or	O
UML	B-Language
.	O
</s>
<s>
BON	B-Application
is	O
the	O
default	O
.	O
</s>
<s>
EiffelStudio	B-Application
makes	O
it	O
possible	O
to	O
display	O
many	O
different	O
views	O
of	O
classes	O
and	O
features	O
:	O
text	O
view	O
(	O
full	O
program	O
text	O
)	O
,	O
contract	O
view	O
(	O
interface	O
only	O
,	O
with	O
contracts	B-Application
)	O
,	O
flat	O
view	O
(	O
which	O
includes	O
inherited	O
features	O
)	O
,	O
clients	O
(	O
all	O
the	O
classes	O
and	O
features	O
that	O
use	O
a	O
given	O
class	O
or	O
feature	O
)	O
,	O
inheritance	O
history	O
(	O
what	O
happens	O
to	O
a	O
feature	O
up	O
and	O
down	O
the	O
inheritance	O
structure	O
)	O
and	O
many	O
others	O
.	O
</s>
<s>
EiffelStudio	B-Application
relies	O
on	O
an	O
original	O
user	B-Application
interface	I-Application
paradigm	O
based	O
on	O
"	O
development	O
objects	O
"	O
,	O
"	O
pebbles	O
"	O
and	O
"	O
holes	O
"	O
.	O
</s>
<s>
In	O
the	O
same	O
way	O
that	O
object-oriented	B-Language
in	O
Eiffel	B-Language
deal	O
with	O
objects	O
during	O
execution	O
,	O
developers	O
deal	O
with	O
abstractions	O
representing	O
classes	O
,	O
features	O
,	O
breakpoints	O
(	O
for	O
debugging	O
)	O
,	O
clusters	O
(	O
groups	O
of	O
classes	O
)	O
and	O
other	O
development	O
objects	O
.	O
</s>
<s>
A	O
development	O
object	O
in	O
EiffelStudio	B-Application
can	O
be	O
selected	O
(	O
picked	O
)	O
wherever	O
it	O
appears	O
in	O
the	O
interface	O
,	O
and	O
regardless	O
of	O
its	O
visual	O
representation	O
(	O
name	O
of	O
the	O
object	O
,	O
visual	O
symbol	O
or	O
other	O
)	O
.	O
</s>
<s>
EiffelStudio	B-Application
includes	O
an	O
integrated	O
testing	O
facility	O
called	O
EiffelStudio	B-Application
AutoTest	O
,	O
whereby	O
developers	O
may	O
build	O
simple	O
to	O
sophisticated	O
unit	O
and	O
integration	O
testing	O
suites	O
.	O
</s>
<s>
The	O
EiffelStudio	B-Application
AutoTest	O
facilities	O
enable	O
the	O
developer	O
to	O
execute	O
and	O
test	O
Eiffel	B-Language
class	O
code	O
from	O
the	O
feature	O
level	O
(	O
e.g.	O
</s>
<s>
As	O
such	O
,	O
execution	O
of	O
this	O
code	O
also	O
executes	O
the	O
contracts	B-Application
of	O
the	O
features	O
and	O
attributes	O
executed	O
.	O
</s>
<s>
As	O
such	O
,	O
EiffelStudio	B-Application
AutoTest	O
is	O
a	O
means	O
to	O
exercising	O
the	O
"	O
tests	O
"	O
or	O
assumptions	O
of	O
the	O
Design	B-Application
by	I-Application
Contract	I-Application
conditions	O
.	O
</s>
<s>
Therefore	O
,	O
unit	O
and	O
integration	O
testing	O
need	O
not	O
re-test	O
through	O
means	O
of	O
assertions	O
or	O
test	O
oracles	O
what	O
has	O
already	O
been	O
coded	O
as	O
specification	O
in	O
the	O
contracts	B-Application
of	O
the	O
class	O
text	O
.	O
</s>
<s>
EiffelStudio	B-Application
AutoTest	O
provides	O
the	O
user	O
with	O
three	O
methods	O
of	O
test	O
case	O
creation	O
.	O
</s>
<s>
First	O
,	O
for	O
manually	O
created	O
tests	O
EiffelStudio	B-Application
AutoTest	O
creates	O
a	O
test	O
class	O
containing	O
a	O
framework	O
for	O
the	O
test	O
.	O
</s>
<s>
Second	O
,	O
EiffelStudio	B-Application
AutoTest	O
provides	O
a	O
method	O
for	O
creating	O
a	O
new	O
test	O
based	O
on	O
an	O
application	O
failure	O
at	O
runtime	O
.	O
</s>
<s>
If	O
while	O
running	O
the	O
target	O
system	O
,	O
an	O
unexpected	O
failure	O
occurs	O
,	O
EiffelStudio	B-Application
AutoTest	O
can	O
work	O
from	O
the	O
information	O
available	O
in	O
the	O
debugger	O
to	O
create	O
a	O
new	O
test	O
that	O
will	O
reproduce	O
the	O
state	O
and	O
the	O
calls	O
that	O
caused	O
the	O
failure	O
.	O
</s>
<s>
In	O
this	O
scenario	O
,	O
the	O
user	O
provides	O
EiffelStudio	B-Application
AutoTest	O
with	O
the	O
classes	O
for	O
which	O
tests	O
should	O
be	O
generated	O
and	O
some	O
additional	O
information	O
used	O
to	O
control	O
the	O
test	O
generation	O
.	O
</s>
<s>
For	O
every	O
unique	O
postcondition	O
or	O
class	B-Application
invariant	I-Application
violation	O
,	O
EiffelStudio	B-Application
AutoTest	O
produces	O
a	O
single	O
new	O
test	O
reproducing	O
the	O
failing	O
call	O
.	O
</s>
<s>
EiffelStudio	B-Application
traces	O
its	O
roots	O
to	O
the	O
first	O
implementation	O
of	O
Eiffel	B-Language
,	O
by	O
Interactive	O
Software	O
Engineering	O
Inc	O
.	O
(	O
predecessor	O
of	O
Eiffel	B-Language
Software	O
)	O
,	O
released	O
in	O
1986	O
.	O
</s>
<s>
The	O
origin	O
of	O
the	O
current	O
technology	O
appears	O
to	O
go	O
back	O
to	O
"	O
EiffelBench	O
"	O
,	O
started	O
in	O
1990	O
in	O
connection	O
with	O
the	O
design	O
of	O
the	O
Eiffel	B-Language
3	O
version	O
of	O
the	O
language	O
(	O
as	O
documented	O
in	O
Eiffel	B-Language
:	O
The	O
Language	O
,	O
see	O
bibliography	O
)	O
.	O
</s>
<s>
EiffelBench	O
was	O
renamed	O
"	O
EiffelStudio	B-Application
"	O
around	O
2001	O
;	O
this	O
is	O
also	O
the	O
time	O
when	O
the	O
environment	O
went	O
beyond	O
its	O
Unix	O
origins	O
to	O
target	O
Windows	B-Application
and	O
other	O
platforms	O
.	O
</s>
<s>
5.1	O
,	O
December	O
2001	O
:	O
first	O
version	O
to	O
support	O
.NET	B-Application
(	O
(	O
PDF	O
)	O
)	O
.	O
</s>
<s>
It	O
was	O
called	O
"	O
Eiffel#	O
"	O
before	O
releasing	O
.	O
</s>
<s>
5.2	O
,	O
November	O
2002	O
:	O
new	O
EiffelBuild	O
for	O
GUI	O
design	O
,	O
extended	O
debugging	O
,	O
new	O
mechanisms	O
for	O
C	B-Language
and	O
C++	O
integration	O
,	O
better	O
roundtripping	O
facilities	O
for	O
the	O
Diagram	O
Tool	O
(	O
)	O
.	O
</s>
<s>
5.3	O
,	O
March	O
2003	O
:	O
Incremental	O
compiler	O
technology	O
available	O
for	O
Eiffel	B-Language
.NET	B-Application
.	O
</s>
<s>
Eiffel2Java	O
Java	O
interface	O
,	O
EiffelStore	O
(	O
relational	O
database	O
interface	O
)	O
now	O
available	O
for	O
.NET	B-Application
,	O
first	O
Mac	B-Application
OS	I-Application
version	O
,	O
performance	O
enhancements	O
(	O
)	O
.	O
</s>
<s>
5.4	O
,	O
November	O
2003	O
:	O
new	O
conversion	O
mechanism	O
,	O
major	O
run-time	O
performance	O
improvements	O
(	O
in	O
particular	O
for	O
agents	O
)	O
,	O
major	O
compilation	O
speed	O
improvements	O
,	O
improved	O
support	O
for	O
multithreading	O
,	O
major	O
EiffelBuild	O
enhancements	O
,	O
first	O
support	O
for	O
new	O
mechanisms	O
as	O
defined	O
by	O
the	O
ECMA	O
Eiffel	B-Language
committee	O
,	O
support	O
for	O
preconditions	O
and	O
postconditions	O
in	O
external	O
(	O
e.g.	O
</s>
<s>
C	B-Language
)	O
routines	O
,	O
transparent	O
way	O
to	O
call	O
overloaded	O
.NET	B-Application
routines	O
from	O
Eiffel	B-Language
(	O
)	O
.	O
</s>
<s>
5.6	O
,	O
August	O
2005	O
:	O
enhanced	O
diagram	O
tool	O
(	O
UML	B-Language
support	O
,	O
force-directed	O
graphs	O
,	O
better	O
roundtripping	O
)	O
,	O
new	O
EiffelCOM	O
wizard	O
for	O
generation	O
of	O
Microsoft	B-Application
COM	I-Application
components	O
,	O
better	O
class	O
completion	O
,	O
faster	O
.NET	B-Application
code	O
generation	O
(	O
)	O
.	O
</s>
<s>
5.7	O
,	O
October	O
2006	O
:	O
ISO/ECMA	O
Eiffel	B-Language
addition	O
(	O
inline	O
agents	O
,	O
new	O
"	O
expanded	O
"	O
semantics	O
,	O
named	O
tuples	O
,	O
Unicode	O
support	O
)	O
,	O
refactoring	O
facilities	O
,	O
new	O
way	O
to	O
configure	O
a	O
project	O
system	O
,	O
metrics	O
(	O
)	O
.	O
</s>
<s>
6.0	O
,	O
June	O
2007	O
:	O
ISO/ECMA	O
Eiffel	B-Language
addition	O
(	O
multiple	O
constraint	O
genericity	O
,	O
octal	O
and	O
binary	O
notation	O
for	O
integers	O
)	O
,	O
new	O
tabbed	O
editor	O
,	O
new	O
docking	O
facilities	O
to	O
let	O
user	O
define	O
their	O
workspace	O
,	O
context	O
menu	O
is	O
available	O
in	O
addition	O
to	O
pick	O
and	O
drop	O
,	O
dependency	O
tool	O
(	O
)	O
.	O
</s>
<s>
Includes	O
the	O
first	O
implementation	O
of	O
facilities	O
supporting	O
SCOOP	B-Application
,	O
Simple	O
Concurrent	O
Object-Oriented	B-Language
Programming	I-Language
.	O
</s>
<s>
Includes	O
performance	O
and	O
functional	O
enhancements	O
to	O
the	O
SCOOP	B-Application
parallel	O
development	O
facility	O
,	O
GUI	O
library	O
and	O
tool	O
support	O
for	O
ribbon	O
interface	O
structures	O
,	O
improved	O
support	O
for	O
void-safe	B-Application
software	O
development	O
,	O
and	O
many	O
other	O
improvements	O
.	O
</s>
<s>
Includes	O
SCOOP	B-Application
processor	O
garbage	O
collection	O
.	O
</s>
<s>
Multiple	O
improvements	O
to	O
Eiffel	B-Language
Information	O
System	O
linking	O
application	O
code	O
to	O
appropriate	O
external	O
resources	O
such	O
as	O
requirements	O
documents	O
.	O
</s>
<s>
Includes	O
new	O
Eiffel	B-Language
Inspector	O
tool	O
(	O
static	O
analysis	O
tool	O
to	O
help	O
maintaining	O
a	O
high	O
code	O
quality	O
)	O
.	O
</s>
<s>
New	O
SCOOP	B-Application
runtime	O
brings	O
significant	O
performance	O
improvement	O
.	O
</s>
<s>
Moving	O
to	O
GTK3	O
for	O
Linux	B-Application
,	O
Unix	O
and	O
a	O
better	O
presence	O
on	O
MAC	B-Application
OS	I-Application
,	O
new	O
Source	O
control	O
tool	O
.	O
</s>
<s>
Code	O
analyzer	O
(	O
former	O
Inspector	O
Eiffel	B-Language
)	O
is	O
an	O
automated	O
Eiffel	B-Language
software	O
testing	O
and	O
static	O
analysis	O
program	O
released	O
by	O
Eiffel	B-Language
Software	O
,	O
originally	O
produced	O
as	O
a	O
result	O
of	O
a	O
Masters	O
Thesis	O
project	O
at	O
ETH	O
Zurich	O
.	O
</s>
<s>
Code	O
analyzer	O
is	O
a	O
Rule-based	O
static	O
code	O
analysis	O
tool	O
which	O
operates	O
both	O
from	O
an	O
embedded	O
mode	O
within	O
EiffelStudio	B-Application
and	O
from	O
command	B-Application
line	I-Application
.	O
</s>
<s>
It	O
utilizes	O
the	O
abstract	B-Data_Structure
syntax	I-Data_Structure
tree	I-Data_Structure
(	O
AST	O
)	O
produced	O
by	O
the	O
Eiffel	B-Language
compiler	O
and	O
then	O
generates	O
a	O
control-flow	O
graph	O
(	O
CFG	O
)	O
,	O
which	O
is	O
computed	O
by	O
a	O
module	O
of	O
code	O
in	O
the	O
tool	O
.	O
</s>
