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b23c9e94
Commit
b23c9e94
authored
Feb 17, 2016
by
Ralf Jung
Browse files
add some automation related to disjointness of namespaces
parent
adf3a991
Changes
1
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program_logic/namespaces.v
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b23c9e94
...
...
@@ 53,4 +53,27 @@ Section ndisjoint.
rewrite
!
list_encode_app
!
assoc
in
Hq
.
by
eapply
Hne
,
list_encode_suffix_eq
.
Qed
.
End
ndisjoint
.
\ No newline at end of file
End
ndisjoint
.
(
*
This
tactic
solves
goals
about
inclusion
and
disjointness
of
masks
(
i
.
e
.,
coPsets
)
with
solve_elem_of
,
taking
disjointness
of
namespaces
into
account
.
*
)
(
*
TODO
:
This
tactic
is
by
far
now
yet
as
powerful
as
it
should
be
.
For
example
,
given
N1
⊥
N2
,
it
should
be
able
to
solve
nclose
(
ndot
N1
x
)
∩
N2
≡
∅
.
It
should
also
solve
(
ndot
N
x
)
∩
(
ndot
N
y
)
≡
∅
if
x
≠
y
is
in
the
context
or
follows
from
[
discriminate
].
*
)
Ltac
solve_elem_of_ndisj
:=
repeat
match
goal
with
(
*
TODO
:
Restrict
these
to
have
type
namespace
*
)

[
H
:
(
?
N1
⊥
?
N2
)

_
]
=>
apply
ndisj_disjoint
in
H
end
;
solve_elem_of
.
(
*
TODO
:
restrict
this
to
match
only
if
this
is
⊆
of
coPset
*
)
Hint
Extern
500
(
_
⊆
_
)
=>
solve_elem_of_ndisj
:
ndisj
.
(
*
The
hope
is
that
registering
these
will
suffice
to
solve
most
goals
of
the
form
N1
⊥
N2
.
TODO:
Can
this
prove
x
≠
y
if
discriminate
can
?
*
)
Hint
Resolve
ndot_ne_disjoint
:
ndisj
.
Hint
Resolve
ndot_preserve_disjoint_l
:
ndisj
.
Hint
Resolve
ndot_preserve_disjoint_r
:
ndisj
.
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