1 ! Copyright (C) 2004, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays definitions graphs assocs kernel
4 kernel.private slots.private math namespaces sequences strings
5 vectors sbufs quotations assocs hashtables sorting words.private
6 vocabs math.order sets ;
9 : word ( -- word ) \ word get-global ;
11 : set-word ( word -- ) \ word set-global ;
13 M: word execute (execute) ;
16 [ [ name>> ] [ vocabulary>> ] bi 2array ] compare ;
18 M: word definer drop \ : \ ; ;
20 M: word definition def>> ;
24 PREDICATE: deferred < word ( obj -- ? )
25 def>> [ undefined ] = ;
26 M: deferred definer drop \ DEFER: f ;
27 M: deferred definition drop f ;
29 PREDICATE: primitive < word ( obj -- ? )
30 [ def>> [ do-primitive ] tail? ]
31 [ sub-primitive>> >boolean ]
33 M: primitive definer drop \ PRIMITIVE: f ;
34 M: primitive definition drop f ;
36 : word-prop ( word name -- value ) swap props>> at ;
38 : remove-word-prop ( word name -- ) swap props>> delete-at ;
40 : set-word-prop ( word value name -- )
42 [ pick props>> ?set-at >>props drop ]
43 [ nip remove-word-prop ] if ;
45 : reset-props ( word seq -- ) [ remove-word-prop ] with each ;
47 : lookup ( name vocab -- word ) vocab-words at ;
49 : target-word ( word -- target )
50 [ name>> ] [ vocabulary>> ] bi lookup ;
52 SYMBOL: bootstrapping?
54 : if-bootstrapping ( true false -- )
55 [ bootstrapping? get ] 2dip if ; inline
57 : bootstrap-word ( word -- target )
58 [ target-word ] [ ] if-bootstrapping ;
60 GENERIC: crossref? ( word -- ? )
63 dup "forgotten" word-prop [
69 GENERIC: compiled-crossref? ( word -- ? )
71 M: word compiled-crossref? crossref? ;
73 GENERIC# (quot-uses) 1 ( obj assoc -- )
75 M: object (quot-uses) 2drop ;
77 M: word (quot-uses) over crossref? [ conjoin ] [ 2drop ] if ;
79 : seq-uses ( seq assoc -- ) [ (quot-uses) ] curry each ;
81 M: array (quot-uses) seq-uses ;
83 M: hashtable (quot-uses) [ >alist ] dip seq-uses ;
85 M: callable (quot-uses) seq-uses ;
87 M: wrapper (quot-uses) [ wrapped>> ] dip (quot-uses) ;
89 : quot-uses ( quot -- assoc )
90 global [ H{ } clone [ (quot-uses) ] keep ] bind ;
92 M: word uses ( word -- seq )
93 def>> quot-uses keys ;
95 SYMBOL: compiled-crossref
97 compiled-crossref [ H{ } clone ] initialize
99 SYMBOL: compiled-generic-crossref
101 compiled-generic-crossref [ H{ } clone ] initialize
103 : (compiled-xref) ( word dependencies word-prop variable -- )
104 [ [ set-word-prop ] curry ]
105 [ [ get add-vertex* ] curry ]
108 : compiled-xref ( word dependencies generic-dependencies -- )
109 [ [ drop crossref? ] { } assoc-filter-as f like ] bi@
110 [ "compiled-uses" compiled-crossref (compiled-xref) ]
111 [ "compiled-generic-uses" compiled-generic-crossref (compiled-xref) ]
114 : (compiled-unxref) ( word word-prop variable -- )
115 [ [ [ dupd word-prop ] dip get remove-vertex* ] 2curry ]
116 [ drop [ remove-word-prop ] curry ]
119 : compiled-unxref ( word -- )
120 [ "compiled-uses" compiled-crossref (compiled-unxref) ]
121 [ "compiled-generic-uses" compiled-generic-crossref (compiled-unxref) ]
124 : delete-compiled-xref ( word -- )
126 [ compiled-crossref get delete-at ]
127 [ compiled-generic-crossref get delete-at ]
130 : inline? ( word -- ? ) "inline" word-prop ; inline
134 CONSTANT: reset-on-redefine { "inferred-effect" "cannot-infer" }
136 : (redefined) ( word -- )
137 dup visited get key? [ drop ] [
138 [ reset-on-redefine reset-props ]
139 [ visited get conjoin ]
144 [ reset-on-redefine [ word-prop ] with any? ]
152 : redefined ( word -- )
153 [ H{ } clone visited [ (redefined) ] with-variable ]
154 [ changed-definition ]
157 : define ( word def -- )
162 dup crossref? [ dup xref ] when drop ;
164 : set-stack-effect ( effect word -- )
165 2dup "declared-effect" word-prop = [ 2drop ] [
167 [ "declared-effect" set-word-prop ]
168 [ drop dup primitive? [ dup redefined ] unless drop ] 2bi
171 : define-declared ( word def effect -- )
172 pick swap "declared-effect" set-word-prop
175 : make-inline ( word -- )
176 t "inline" set-word-prop ;
178 : make-recursive ( word -- )
179 t "recursive" set-word-prop ;
181 : make-flushable ( word -- )
182 t "flushable" set-word-prop ;
184 : make-foldable ( word -- )
185 dup make-flushable t "foldable" set-word-prop ;
187 : define-inline ( word def effect -- )
188 [ define-declared ] [ 2drop make-inline ] 3bi ;
190 GENERIC: reset-word ( word -- )
194 "unannotated-def" "parsing" "inline" "recursive"
195 "foldable" "flushable" "reading" "writing" "reader"
196 "writer" "declared-effect" "delimiter"
199 GENERIC: subwords ( word -- seq )
201 M: word subwords drop f ;
203 : reset-generic ( word -- )
204 [ subwords forget-all ]
206 [ { "methods" "combination" "default-method" } reset-props ]
210 "( gensym )" f <word> ;
212 : define-temp ( quot effect -- word )
213 [ gensym dup ] 2dip define-declared ;
216 dup [ name>> ] [ vocabulary>> ] bi dup vocab-words
220 ERROR: bad-create name vocab ;
222 : check-create ( name vocab -- name vocab )
223 2dup [ string? ] both?
224 [ bad-create ] unless ;
226 : create ( name vocab -- word )
227 check-create 2dup lookup
228 dup [ 2nip ] [ drop <word> dup reveal ] if ;
230 : constructor-word ( name vocab -- word )
231 [ "<" ">" surround ] dip create ;
233 PREDICATE: parsing-word < word "parsing" word-prop ;
235 : make-parsing ( word -- ) t "parsing" set-word-prop ;
237 : delimiter? ( obj -- ? )
238 dup word? [ "delimiter" word-prop ] [ drop f ] if ;
240 ! Definition protocol
241 M: word where "loc" word-prop ;
243 M: word set-where swap "loc" set-word-prop ;
246 dup "forgotten" word-prop [ drop ] [
248 [ [ name>> ] [ vocabulary>> vocab-words ] bi delete-at ]
249 [ t "forgotten" set-word-prop ]
254 nip 1 slot { fixnum } declare ; foldable
256 M: word literalize <wrapper> ;
258 : ?word-name ( word -- name ) dup word? [ name>> ] when ;
260 : xref-words ( -- ) all-words [ xref ] each ;