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bthon...
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X
"vLt
dyi,ng
decorator
and
deco.rator
was
pointing
to.
assert
d.back
d.back.thing
=
d.thing
irnport
unitte-st
class TestcaseoL
(u]altte.st.fe.stcase)
:
def setup(se1f):
self .Proxything
=
f'3o*t,,
seIf.d1
=
Decoratorlo
def
checkNoDecoration(self
)
:
self .ProxYthing
=
P3o*U1,
res
=
self
.proxythinE.Do
(
)
#Tsrint
res
asgert
te.s
==
'hi'
def checkoneDecoration
(
self)
I
self .proxythi
rrg.AddDecorator
(
3elf'
dl)
res
=
self .prox!.thitg.Doo
&rir]t
res
u
usE-RM
=
1
(9-"^
if
USE_RM:
from
RM ilnpolt
RML
RM
=
RMlo
5,^,,.'hJr
il^^3
Il^
.ft
fl
RDl.RR("xy",'onetoone",
I'dixectionalrr)
clats
_CorE)onent
(obj
ect)
:
def
_setThing(sel'f,
thing) :
def
-getThing(self):
def
-getBack(sel^f):
ttring
=
property (_getThing,
baeL
=
property
(_getBack)
else:
class
_corqlonent{object):
\
de?
_init_(seir):
\
L
,h{e*""k
^w
sere.tf,jlng
=
Nonel
serr.back
=
NoneJ
o[f i.Adal
o4^l^'^1
crass component(tonulonent):
ll
tWO
/Oin\ry)'
def
Do(self):
#
virtual
F^'9?l-
|
raise
'Do
not
irtPlemented'
class Thj.ng
(Component
)
:
def
Do(seLf):
return
'hi'
clasg Decorator
(Conponent
)
:
pa93
class
Decoratorl
(Decorato.r)
:
def Do{5e1f}:
return
t**
I
* self.thing.Dc()
+'
""'
class
Proxy
(co[E]onent
)
:
def
-init-(self
)
:
cgtrE)snerrt .
_i"Iit_
(
s e 1f
)
self.thing
=
ThinSo
def Do{gel-f
}
:
assert
self.thing,
'oops,
have
lost
the real
thing
obiect'
return
self '
thing.Do
(
)
def AddDecorator(self'
d)
:
sel.f .hsertDecorator(d)
#
TODA
rnake
this append
to the
-ljst
of decorators.
def
InsertDecorator(self,
d) :
Inserts
the
decorator
first in
the list
of decorators.
rrirt
d.thing
=
sel-f.thing
#
make
decorater
paint
to
the thing
you
were
pointinEr
to
setf.thing
=
4 #
point'
to
the decotatox
Fj-nd
the thing_A
poj-ntj-ng
point
it
at the lhing
the
to the
dying
if
not
usE_RM:
d.thing.back
=
d.back #
update
back
pointer!
!
'
{zJ1
fa,cut
f
fr"-.
Ai""^7
hilhQdin
"
24f04f2604II:00
PM
