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Merge branch 'master' of git://factorcode.org/git/factor

db4
Joe Groff 2008-06-10 18:10:19 -07:00
parent adbcd73429 bdf77814e2
commit 0c51a5b1ec
13 changed files with 148 additions and 113 deletions
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6
extra/boids/boids.factor
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@ -114,7 +114,7 @@ over boid-vel -rot relative-position angle-between ;
{ [ cohesion-radius> in-range? ] { [ cohesion-radius> in-range? ]
[ cohesion-view-angle> in-view? ] [ cohesion-view-angle> in-view? ]
[ eq? not ] } [ eq? not ] }
<--&& ; 2&& ;
: cohesion-neighborhood ( self -- boids ) : cohesion-neighborhood ( self -- boids )
boids> [ within-cohesion-neighborhood? ] with filter ; boids> [ within-cohesion-neighborhood? ] with filter ;
@ -134,7 +134,7 @@ over boid-vel -rot relative-position angle-between ;
{ [ separation-radius> in-range? ] { [ separation-radius> in-range? ]
[ separation-view-angle> in-view? ] [ separation-view-angle> in-view? ]
[ eq? not ] } [ eq? not ] }
<--&& ; 2&& ;
: separation-neighborhood ( self -- boids ) : separation-neighborhood ( self -- boids )
boids> [ within-separation-neighborhood? ] with filter ; boids> [ within-separation-neighborhood? ] with filter ;
@ -154,7 +154,7 @@ over boid-vel -rot relative-position angle-between ;
{ [ alignment-radius> in-range? ] { [ alignment-radius> in-range? ]
[ alignment-view-angle> in-view? ] [ alignment-view-angle> in-view? ]
[ eq? not ] } [ eq? not ] }
<--&& ; 2&& ;
: alignment-neighborhood ( self -- boids ) : alignment-neighborhood ( self -- boids )
boids> [ within-alignment-neighborhood? ] with filter ; boids> [ within-alignment-neighborhood? ] with filter ;

12
extra/combinators/lib/lib-docs.factor
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@ -47,10 +47,10 @@ HELP: nkeep
} }
{ $see-also keep nslip } ; { $see-also keep nslip } ;
HELP: && ! HELP: &&
{ $values { "quots" "a sequence of quotations with stack effect " { $snippet "( ... -- ... ? )" } } { "?" "a boolean" } } ! { $values { "quots" "a sequence of quotations with stack effect " { $snippet "( ... -- ... ? )" } } { "?" "a boolean" } }
{ $description "Calls each quotation in turn; outputs " { $link f } " if one of the quotations output " { $link f } ", otherwise outputs " { $link t } ". As soon as a quotation outputs " { $link f } ", evaluation stops and subsequent quotations are not called." } ; ! { $description "Calls each quotation in turn; outputs " { $link f } " if one of the quotations output " { $link f } ", otherwise outputs " { $link t } ". As soon as a quotation outputs " { $link f } ", evaluation stops and subsequent quotations are not called." } ;
HELP: || ! HELP: ||
{ $values { "quots" "a sequence of quotations with stack effect " { $snippet "( ... -- ... ? )" } } { "?" "a boolean" } } ! { $values { "quots" "a sequence of quotations with stack effect " { $snippet "( ... -- ... ? )" } } { "?" "a boolean" } }
{ $description "Calls each quotation in turn; outputs " { $link t } " if one of the quotations output " { $link t } ", otherwise outputs " { $link f } ". As soon as a quotation outputs " { $link t } ", evaluation stops and subsequent quotations are not called." } ; ! { $description "Calls each quotation in turn; outputs " { $link t } " if one of the quotations output " { $link t } ", otherwise outputs " { $link f } ". As soon as a quotation outputs " { $link t } ", evaluation stops and subsequent quotations are not called." } ;

8
extra/combinators/lib/lib-tests.factor
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@ -28,13 +28,13 @@ IN: combinators.lib.tests
[ t ] [ [ t ] [
3 { 3 {
[ dup number? ] [ dup odd? ] [ dup 0 > ] [ dup number? ] [ dup odd? ] [ dup 0 > ]
} && nip } 0&& nip
] unit-test ] unit-test
[ f ] [ [ f ] [
3 { 3 {
[ dup number? ] [ dup even? ] [ dup 0 > ] [ dup number? ] [ dup even? ] [ dup 0 > ]
} && nip } 0&& nip
] unit-test ] unit-test
! || ! ||
@ -42,13 +42,13 @@ IN: combinators.lib.tests
[ t ] [ [ t ] [
4 { 4 {
[ dup array? ] [ dup number? ] [ 3 throw ] [ dup array? ] [ dup number? ] [ 3 throw ]
} || nip } 0|| nip
] unit-test ] unit-test
[ f ] [ [ f ] [
4 { 4 {
[ dup array? ] [ dup vector? ] [ dup float? ] [ dup array? ] [ dup vector? ] [ dup float? ]
} || nip } 0|| nip
] unit-test ] unit-test

70
extra/combinators/lib/lib.factor
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@ -63,34 +63,68 @@ MACRO: napply ( n -- )
! short circuiting words ! short circuiting words
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: short-circuit ( quots quot default -- quot ) ! : short-circuit ( quots quot default -- quot )
1quotation -rot { } map>assoc <reversed> alist>quot ; ! 1quotation -rot { } map>assoc <reversed> alist>quot ;
MACRO: && ( quots -- ? ) ! MACRO: && ( quots -- ? )
[ [ not ] append [ f ] ] t short-circuit ; ! [ [ not ] append [ f ] ] t short-circuit ;
MACRO: <-&& ( quots -- ) ! MACRO: <-&& ( quots -- )
[ [ dup ] prepend [ not ] append [ f ] ] t short-circuit ! [ [ dup ] prepend [ not ] append [ f ] ] t short-circuit
[ nip ] append ; ! [ nip ] append ;
MACRO: <--&& ( quots -- ) ! MACRO: <--&& ( quots -- )
[ [ 2dup ] prepend [ not ] append [ f ] ] t short-circuit ! [ [ 2dup ] prepend [ not ] append [ f ] ] t short-circuit
[ 2nip ] append ; ! [ 2nip ] append ;
! or ! or
MACRO: || ( quots -- ? ) [ [ t ] ] f short-circuit ; ! MACRO: || ( quots -- ? ) [ [ t ] ] f short-circuit ;
MACRO: 0|| ( quots -- ? ) [ [ t ] ] f short-circuit ; ! MACRO: 0|| ( quots -- ? ) [ [ t ] ] f short-circuit ;
MACRO: 1|| ( quots -- ? ) ! MACRO: 1|| ( quots -- ? )
[ [ dup ] prepend [ t ] ] f short-circuit [ nip ] append ; ! [ [ dup ] prepend [ t ] ] f short-circuit [ nip ] append ;
MACRO: 2|| ( quots -- ? ) ! MACRO: 2|| ( quots -- ? )
[ [ 2dup ] prepend [ t ] ] f short-circuit [ 2nip ] append ; ! [ [ 2dup ] prepend [ t ] ] f short-circuit [ 2nip ] append ;
MACRO: 3|| ( quots -- ? ) ! MACRO: 3|| ( quots -- ? )
[ [ 3dup ] prepend [ t ] ] f short-circuit [ 3nip ] append ; ! [ [ 3dup ] prepend [ t ] ] f short-circuit [ 3nip ] append ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
MACRO: 0&& ( quots -- quot )
[ '[ drop @ dup not ] [ drop f ] 2array ] map
{ [ t ] [ ] } suffix
'[ f , cond ] ;
MACRO: 1&& ( quots -- quot )
[ '[ drop dup @ dup not ] [ drop drop f ] 2array ] map
{ [ t ] [ nip ] } suffix
'[ f , cond ] ;
MACRO: 2&& ( quots -- quot )
[ '[ drop 2dup @ dup not ] [ drop 2drop f ] 2array ] map
{ [ t ] [ 2nip ] } suffix
'[ f , cond ] ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
MACRO: 0|| ( quots -- quot )
[ '[ drop @ dup ] [ ] 2array ] map
{ [ drop t ] [ f ] } suffix
'[ f , cond ] ;
MACRO: 1|| ( quots -- quot )
[ '[ drop dup @ dup ] [ nip ] 2array ] map
{ [ drop drop t ] [ f ] } suffix
'[ f , cond ] ;
MACRO: 2|| ( quots -- quot )
[ '[ drop 2dup @ dup ] [ 2nip ] 2array ] map
{ [ drop 2drop t ] [ f ] } suffix
'[ f , cond ] ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! ifte ! ifte

3
extra/dns/dns.factor
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@ -1,5 +1,6 @@
USING: kernel byte-arrays combinators strings arrays sequences splitting USING: kernel byte-arrays combinators strings arrays sequences splitting
grouping
math math.functions math.parser random math math.functions math.parser random
destructors destructors
io io.binary io.sockets io.encodings.binary io io.binary io.sockets io.encodings.binary
@ -382,7 +383,7 @@ SYMBOLS: NO-ERROR FORMAT-ERROR SERVER-FAILURE NAME-ERROR NOT-IMPLEMENTED
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: >> neg shift ; : >> ( x n -- y ) neg shift ;
: get-header-bits ( ba i -- qr opcode aa tc rd ra z rcode ) : get-header-bits ( ba i -- qr opcode aa tc rd ra z rcode )
get-double get-double

4
extra/dns/forwarding/forwarding.factor
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@ -39,10 +39,6 @@ IN: dns.forwarding
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: 1&& <-&& ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: rrs? ( obj -- ? ) { [ NX = not ] [ f = not ] } 1&& ; : rrs? ( obj -- ? ) { [ NX = not ] [ f = not ] } 1&& ;
: query->answer/cache ( query -- rrs/NX/f ) : query->answer/cache ( query -- rrs/NX/f )

115
extra/dns/server/server.factor
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@ -6,9 +6,9 @@ USING: kernel
io.sockets io.sockets
unicode.case unicode.case
accessors accessors
combinators.cleave combinators.cleave combinators.lib
newfx newfx
dns ; dns dns.util ;
IN: dns.server IN: dns.server
@ -18,10 +18,6 @@ IN: dns.server
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: filter-by-name ( records name -- records ) swap [ name>> = ] with filter ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: {name-type-class} ( obj -- array ) : {name-type-class} ( obj -- array )
{ [ name>> >lower ] [ type>> ] [ class>> ] } <arr> ; { [ name>> >lower ] [ type>> ] [ class>> ] } <arr> ;
@ -32,80 +28,77 @@ IN: dns.server
: matching-rrs ( query -- rrs ) records [ rr=query? ] with filter ; : matching-rrs ( query -- rrs ) records [ rr=query? ] with filter ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! query->rrs
: matching-rrs? ( query -- query rrs/f ? ) dup matching-rrs dup empty? not ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: matching-cname? ( query -- query rr/f ? )
dup clone CNAME >>type matching-rrs
dup empty? [ drop f f ] [ 1st t ] if ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
DEFER: query->rrs DEFER: query->rrs
: query-canonical ( query rr -- rrs ) : matching-rrs? ( query -- rrs/f ) matching-rrs [ empty? ] [ drop f ] [ ] 1if ;
tuck [ clone ] [ rdata>> ] bi* >>name query->rrs prefix-on ;
: query->rrs ( query -- rrs/f ) : matching-cname? ( query -- rrs/f )
{ [ ] [ clone CNAME >>type matching-rrs ] bi ! query rrs
{ [ matching-rrs? ] [ nip ] } [ empty? not ]
{ [ drop matching-cname? ] [ query-canonical ] } [ 1st swap clone over rdata>> >>name query->rrs prefix-on ]
{ [ drop t ] [ drop f ] } [ 2drop f ]
} 1if ;
cond ;
: query->rrs ( query -- rrs/f ) { [ matching-rrs? ] [ matching-cname? ] } 1|| ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! have-answers
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: have-answers ( message -- message/f )
dup message-query query->rrs ! message rrs/f
[ empty? ] [ 2drop f ] [ >>answer-section ] 1if ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! have-delegates?
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: cdr-name ( name -- name ) dup CHAR: . index 1+ tail ; : cdr-name ( name -- name ) dup CHAR: . index 1+ tail ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! : is-soa? ( name -- ? ) SOA IN query boa matching-rrs empty? not ;
: delegate-servers? ( name -- name rrs ? ) : have-ns? ( name -- rrs/f )
dup NS IN query boa matching-rrs dup empty? not ; NS IN query boa matching-rrs [ empty? ] [ drop f ] [ ] 1if ;
: name->delegates ( name -- rrs-ns )
{
[ "" = { } and ]
[ is-soa? { } and ]
[ have-ns? ]
[ cdr-name name->delegates ]
}
1|| ;
: have-delegates ( message -- message/f )
dup message-query name>> name->delegates ! message rrs-ns
[ empty? ]
[ 2drop f ]
[
dup [ rdata>> A IN query boa matching-rrs ] map concat
! message rrs-ns rrs-a
[ >>authority-section ]
[ >>additional-section ]
bi*
]
1if ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! is-nx
: delegate-servers ( name -- rrs )
{
{ [ dup "" = ] [ drop { } ] }
{ [ delegate-servers? ] [ nip ] }
{ [ drop t ] [ cdr-name delegate-servers ] }
}
cond ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: delegate-addresses ( rrs-ns -- rrs-a ) : is-nx ( message -- message/f )
[ rdata>> A IN query boa matching-rrs ] map concat ; [ message-query name>> records [ name>> = ] with filter empty? ]
[ NAME-ERROR >>rcode ]
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! [ drop f ]
1if ;
: have-delegates? ( query -- query rrs-ns ? )
dup name>> delegate-servers dup empty? not ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: fill-additional ( message -- message )
dup authority-section>> delegate-addresses >>additional-section ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: no-records-with-name? ( query -- query ? )
dup name>> records [ name>> = ] with filter empty? ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: find-answer ( message -- message ) : find-answer ( message -- message )
dup message-query ! message query { [ have-answers ] [ have-delegates ] [ is-nx ] [ ] } 1|| ;
{
{ [ dup query->rrs dup ] [ nip >>answer-section 1 >>aa ] }
{ [ drop have-delegates? ] [ nip >>authority-section fill-additional ] }
{ [ drop no-records-with-name? ] [ drop NAME-ERROR >>rcode ] }
{ [ drop t ] [ ] }
}
cond ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

11
extra/dns/util/util.factor Normal file
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@ -0,0 +1,11 @@
USING: kernel macros fry ;
IN: dns.util
: tri-chain ( obj p q r -- x y z )
>r >r call dup r> call dup r> call ; inline
MACRO: 1if ( test then else -- ) '[ dup @ , , if ] ;
! : 1if ( test then else -- ) >r >r >r dup r> call r> r> if ; inline ;

2
extra/help/lint/lint.factor
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@ -55,7 +55,7 @@ IN: help.lint
r> assert= r> assert=
t t
] ]
} && 3drop ; } 0&& 3drop ;
: check-see-also ( word element -- ) : check-see-also ( word element -- )
nip \ $see-also swap elements [ nip \ $see-also swap elements [

4
extra/io/windows/nt/files/files.factor
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@ -23,7 +23,7 @@ M: winnt root-directory? ( path -- ? )
{ [ dup empty? ] [ f ] } { [ dup empty? ] [ f ] }
{ [ dup [ path-separator? ] all? ] [ t ] } { [ dup [ path-separator? ] all? ] [ t ] }
{ [ dup right-trim-separators { [ dup right-trim-separators
{ [ dup length 2 = ] [ dup second CHAR: : = ] } && nip ] [ { [ dup length 2 = ] [ dup second CHAR: : = ] } 0&& nip ] [
t t
] } ] }
[ f ] [ f ]
@ -36,7 +36,7 @@ ERROR: not-absolute-path ;
[ dup length 2 >= ] [ dup length 2 >= ]
[ dup second CHAR: : = ] [ dup second CHAR: : = ]
[ dup first Letter? ] [ dup first Letter? ]
} && [ 2 head ] [ not-absolute-path ] if ; } 0&& [ 2 head ] [ not-absolute-path ] if ;
: prepend-prefix ( string -- string' ) : prepend-prefix ( string -- string' )
dup unicode-prefix head? [ dup unicode-prefix head? [

2
extra/logging/logging.factor
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@ -47,7 +47,7 @@ SYMBOL: log-service
[ dup array? ] [ dup array? ]
[ dup length 1 = ] [ dup length 1 = ]
[ dup first string? ] [ dup first string? ]
} && nip ; } 0&& nip ;
: stack>message ( obj -- inputs>message ) : stack>message ( obj -- inputs>message )
dup one-string? [ first ] [ dup one-string? [ first ] [

2
extra/lsys/strings/strings.factor
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@ -5,7 +5,7 @@ IN: lsys.strings
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: has-param? ( slice -- ? ) { [ length 1 > ] [ second CHAR: ( = ] } <-&& ; : has-param? ( slice -- ? ) { [ length 1 > ] [ second CHAR: ( = ] } 1&& ;
: next+rest ( slice -- next rest ) [ 1 head ] [ 1 tail-slice ] bi ; : next+rest ( slice -- next rest ) [ 1 head ] [ 1 tail-slice ] bi ;

18
extra/newfx/newfx.factor
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@ -175,15 +175,15 @@ METHOD: as-mutate { object object assoc } set-at ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: 1st 0 at ; : 1st ( seq -- obj ) 0 at ;
: 2nd 1 at ; : 2nd ( seq -- obj ) 1 at ;
: 3rd 2 at ; : 3rd ( seq -- obj ) 2 at ;
: 4th 3 at ; : 4th ( seq -- obj ) 3 at ;
: 5th 4 at ; : 5th ( seq -- obj ) 4 at ;
: 6th 5 at ; : 6th ( seq -- obj ) 5 at ;
: 7th 6 at ; : 7th ( seq -- obj ) 6 at ;
: 8th 7 at ; : 8th ( seq -- obj ) 7 at ;
: 9th 8 at ; : 9th ( seq -- obj ) 8 at ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!