1 ! Copyright (C) 2007, 2010 Daniel Ehrenberg, Slava Pestov
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays kernel math sequences sequences.private
9 GENERIC: at* ( key assoc -- value/f ? )
10 GENERIC: value-at* ( value assoc -- key/f ? )
11 GENERIC: set-at ( value key assoc -- )
12 GENERIC: new-assoc ( capacity exemplar -- newassoc )
13 GENERIC: delete-at ( key assoc -- )
14 GENERIC: clear-assoc ( assoc -- )
15 GENERIC: assoc-size ( assoc -- n )
16 GENERIC: assoc-like ( assoc exemplar -- newassoc )
17 GENERIC: assoc-clone-like ( assoc exemplar -- newassoc )
18 GENERIC: >alist ( assoc -- newassoc )
19 GENERIC: keys ( assoc -- keys )
20 GENERIC: values ( assoc -- values )
21 GENERIC: unzip ( assoc -- keys values )
23 M: assoc assoc-like drop ; inline
25 : ?at ( key assoc -- value/key ? )
26 2dup at* [ 2nip t ] [ 2drop f ] if ; inline
28 : maybe-set-at ( value key assoc -- changed? )
29 3dup at* [ = [ 3drop f ] [ set-at t ] if ] [ 2drop set-at t ] if ;
33 : assoc-operator ( assoc quot -- alist quot' )
34 [ >alist ] dip [ first2 ] prepose ; inline
36 : assoc-stack-from ( key i seq -- value/f )
41 [ 3nip ] [ drop [ 1 - ] dip assoc-stack-from ] if
42 ] if ; inline recursive
44 : search-alist ( key alist -- pair/f i/f )
45 [ first = ] with find swap ; inline
47 : substituter ( assoc -- quot )
48 [ ?at drop ] curry ; inline
50 : with-assoc ( assoc quot: ( ..a value key assoc -- ..b ) -- quot: ( ..a key value -- ..b ) )
51 curry [ swap ] prepose ; inline
55 : assoc-find ( ... assoc quot: ( ... key value -- ... ? ) -- ... key value ? )
56 assoc-operator find swap [ first2-unsafe t ] [ drop f f f ] if ; inline
58 : key? ( key assoc -- ? ) at* nip ; inline
60 : assoc-each ( ... assoc quot: ( ... key value -- ... ) -- ... )
61 assoc-operator each ; inline
63 : assoc>map ( ... assoc quot: ( ... key value -- ... elt ) exemplar -- ... seq )
64 [ assoc-operator ] dip map-as ; inline
66 : assoc-map-as ( ... assoc quot: ( ... key value -- ... newkey newvalue ) exemplar -- ... newassoc )
67 [ [ 2array ] compose { } assoc>map ] dip assoc-like ; inline
69 : assoc-map ( ... assoc quot: ( ... key value -- ... newkey newvalue ) -- ... newassoc )
70 over assoc-map-as ; inline
72 : assoc-filter-as ( ... assoc quot: ( ... key value -- ... ? ) exemplar -- ... subassoc )
73 [ assoc-operator filter ] dip assoc-like ; inline
75 : assoc-filter ( ... assoc quot: ( ... key value -- ... ? ) -- ... subassoc )
76 over assoc-filter-as ; inline
78 : assoc-reject-as ( ... assoc quot: ( ... key value -- ... ? ) exemplar -- ... subassoc )
79 [ [ not ] compose ] [ assoc-filter-as ] bi* ; inline
81 : assoc-reject ( ... assoc quot: ( ... key value -- ... ? ) -- ... subassoc )
82 over assoc-reject-as ; inline
84 : assoc-filter! ( ... assoc quot: ( ... key value -- ... ? ) -- ... assoc )
86 over [ [ [ drop ] 2bi ] dip [ delete-at ] 2curry unless ] 2curry
88 ] [ drop ] 2bi ; inline
90 : assoc-reject! ( ... assoc quot: ( ... key value -- ... ? ) -- ... assoc )
91 [ not ] compose assoc-filter! ; inline
93 : sift-keys ( assoc -- assoc' )
94 [ drop ] assoc-filter ; inline
96 : sift-values ( assoc -- assoc' )
97 [ nip ] assoc-filter ; inline
99 : harvest-keys ( assoc -- assoc' )
100 [ drop empty? ] assoc-reject ; inline
102 : harvest-values ( assoc -- assoc' )
103 [ nip empty? ] assoc-reject ; inline
105 : assoc-partition ( ... assoc quot: ( ... key value -- ... ? ) -- ... true-assoc false-assoc )
106 [ assoc-operator partition ] [ drop ] 2bi
107 [ assoc-like ] curry bi@ ; inline
109 : assoc-any? ( ... assoc quot: ( ... key value -- ... ? ) -- ... ? )
110 assoc-find 2nip ; inline
112 : assoc-all? ( ... assoc quot: ( ... key value -- ... ? ) -- ... ? )
113 [ not ] compose assoc-any? not ; inline
115 : at ( key assoc -- value/f )
118 : ?of ( assoc key -- value/key ? )
121 : of ( assoc key -- value/f )
124 M: assoc assoc-clone-like
125 [ dup assoc-size ] dip new-assoc
126 [ [ set-at ] with-assoc assoc-each ] keep ; inline
128 M: assoc keys [ drop ] { } assoc>map ;
130 M: assoc values [ nip ] { } assoc>map ;
132 : delete-at* ( key assoc -- value/f ? )
133 [ at* ] 2keep delete-at ;
135 : ?delete-at ( key assoc -- value/key ? )
136 [ ?at ] 2keep delete-at ;
138 : rename-at ( newkey key assoc -- )
139 [ delete-at* ] keep [ set-at ] with-assoc [ 2drop ] if ;
141 : assoc-empty? ( assoc -- ? )
142 assoc-size 0 = ; inline
144 : assoc-stack ( key seq -- value )
145 index-of-last assoc-stack-from ; flushable
147 : assoc-subset? ( assoc1 assoc2 -- ? )
148 [ at* [ = ] [ 2drop f ] if ] with-assoc assoc-all? ;
150 : assoc= ( assoc1 assoc2 -- ? )
151 2dup [ assoc-size ] bi@ = [ assoc-subset? ] [ 2drop f ] if ;
153 : assoc-hashcode ( n assoc -- code )
156 : assoc-intersect ( assoc1 assoc2 -- intersection )
157 swap [ nip key? ] curry assoc-filter ;
159 : assoc-union! ( assoc1 assoc2 -- assoc1 )
160 over [ set-at ] with-assoc assoc-each ;
162 : assoc-union-as ( assoc1 assoc2 exemplar -- union )
163 [ [ [ assoc-size ] bi@ + ] dip new-assoc ] 2keepd
164 [ assoc-union! ] bi@ ;
166 : assoc-union ( assoc1 assoc2 -- union )
167 over assoc-union-as ;
169 : assoc-union-all ( seq -- union )
170 H{ } clone [ assoc-union! ] reduce ;
172 : assoc-intersect-all ( seq -- assoc )
173 [ f ] [ [ ] [ assoc-intersect ] map-reduce ] if-empty ;
175 : assoc-differ ( key -- quot )
176 [ nip key? not ] curry ; inline
178 : assoc-diff ( assoc1 assoc2 -- diff )
179 assoc-differ assoc-filter ;
181 : assoc-diff! ( assoc1 assoc2 -- assoc1 )
182 assoc-differ assoc-filter! ;
184 : substitute ( seq assoc -- newseq )
187 : cache ( ... key assoc quot: ( ... key -- ... value ) -- ... value )
188 [ [ at* ] 2keep ] dip
189 [ [ nip call dup ] [ drop ] 3bi set-at ] 3curry
193 : 2cache ( ... key1 key2 assoc quot: ( ... key1 key2 -- ... value ) -- ... value )
194 [ 2array ] 2dip [ first2-unsafe ] prepose cache ; inline
196 : change-at ( ..a key assoc quot: ( ..a value -- ..b newvalue ) -- ..b )
197 [ [ at ] dip call ] [ drop ] 3bi set-at ; inline
199 : ?change-at ( ..a key assoc quot: ( ..a value -- ..b newvalue ) -- ..b )
200 2over [ set-at ] 2curry compose [ at* ] dip [ drop ] if ; inline
202 : at+ ( n key assoc -- ) [ 0 or + ] change-at ; inline
204 : inc-at ( key assoc -- ) [ 1 ] 2dip at+ ; inline
206 : map>assoc ( ... seq quot: ( ... elt -- ... key value ) exemplar -- ... assoc )
208 [ [ 2array ] compose ] dip map-as
210 [ over assoc-size ] dip new-assoc
211 [ [ swapd set-at ] curry compose each ] keep
214 : map>alist ( ... seq quot: ( ... elt -- ... key value ) -- ... alist )
215 { } map>assoc ; inline
217 : extract-keys ( seq assoc -- subassoc )
218 [ [ dupd at ] curry ] keep map>assoc ;
220 M: assoc value-at* swap [ = nip ] curry assoc-find nip ;
222 : value-at ( value assoc -- key/f ) value-at* drop ;
224 : ?value-at ( value assoc -- key/value ? )
225 2dup value-at* [ 2nip t ] [ 2drop f ] if ; inline
227 : value? ( value assoc -- ? ) value-at* nip ;
229 : push-at ( value key assoc -- )
230 [ ?push ] change-at ;
232 : zip-as ( keys values exemplar -- assoc )
234 [ 2array ] swap 2map-as
236 [ 2dup min-length ] dip new-assoc
237 [ [ set-at ] with-assoc 2each ] keep
240 : zip ( keys values -- alist )
243 : zip-index-as ( values exemplar -- assoc )
244 [ dup length <iota> ] dip zip-as ; inline
246 : zip-index ( values -- alist )
247 { } zip-index-as ; inline
250 dup assoc-empty? [ drop { } { } ] [ >alist flip first2 ] if ;
252 : zip-with-as ( ... seq quot: ( ... key -- ... value ) exemplar -- ... assoc )
253 [ [ keep swap ] curry ] dip map>assoc ; inline
255 : zip-with ( ... seq quot: ( ... key -- ... value ) -- ... alist )
256 { } zip-with-as ; inline
258 : collect-by! ( ... assoc seq quot: ( ... obj -- ... key ) -- ... assoc )
259 [ keep swap ] curry rot [
260 [ push-at ] curry compose each
263 : collect-by ( ... seq quot: ( ... obj -- ... key ) -- ... assoc )
264 [ H{ } clone ] 2dip collect-by! ; inline
267 search-alist [ second t ] [ f ] if ;
272 [ drop [ swap 2array ] dip push ] if ;
274 M: sequence new-assoc drop <vector> ; inline
276 M: sequence clear-assoc delete-all ; inline
278 M: sequence delete-at
279 [ nip ] [ search-alist nip ] 2bi
280 [ swap remove-nth! drop ] [ drop ] if* ;
282 M: sequence assoc-size length ; inline
284 M: sequence assoc-clone-like
285 [ >alist ] dip clone-like ; inline
287 M: sequence assoc-like
288 [ >alist ] dip like ; inline
290 M: sequence >alist ; inline
292 ! Override sequence => assoc instance for f
293 M: f at* 2drop f f ; inline
295 M: f assoc-size drop 0 ; inline
297 M: f clear-assoc drop ; inline
299 M: f assoc-like drop dup assoc-empty? [ drop f ] when ; inline
301 INSTANCE: sequence assoc
303 TUPLE: enumerated { seq read-only } ;
305 C: <enumerated> enumerated
308 seq>> 2dup bounds-check?
309 [ nth-unsafe t ] [ 2drop f f ] if ; inline
311 M: enumerated set-at seq>> set-nth ; inline
313 M: enumerated delete-at seq>> remove-nth! drop ; inline
315 M: enumerated >alist ; inline
317 M: enumerated keys seq>> length <iota> >array ; inline
319 M: enumerated values seq>> >array ; inline
321 M: enumerated unzip seq>> [ length <iota> ] keep [ >array ] bi@ ;
323 M: enumerated assoc-size seq>> length ; inline
325 M: enumerated clear-assoc seq>> delete-all ; inline
327 INSTANCE: enumerated assoc
329 M: enumerated length seq>> length ; inline
331 M: enumerated nth-unsafe dupd seq>> nth-unsafe 2array ; inline
333 INSTANCE: enumerated immutable-sequence