1 ! Copyright (C) 2004, 2006 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
4 DEFER: remove-word-help
7 USING: arrays definitions errors generic graphs hashtables
8 kernel kernel-internals math namespaces sequences strings
11 ! Used by the compiler
14 : word-changed? ( word -- ? )
15 changed-words get [ hash-member? ] [ drop f ] if* ;
17 : changed-word ( word -- )
18 dup changed-words get [ set-hash ] [ 2drop ] if* ;
20 : unchanged-word ( word -- )
21 changed-words get [ remove-hash ] [ drop ] if* ;
24 [ dup word-name swap word-vocabulary 2array ] 2apply <=> ;
26 GENERIC: definer ( word -- definer )
28 PREDICATE: word undefined ( obj -- ? ) word-primitive 0 = ;
29 M: undefined definer drop \ DEFER: ;
31 PREDICATE: word compound ( obj -- ? ) word-primitive 1 = ;
32 M: compound definer drop \ : ;
34 PREDICATE: word primitive ( obj -- ? ) word-primitive 2 > ;
35 M: primitive definer drop \ PRIMITIVE: ;
37 PREDICATE: word symbol ( obj -- ? ) word-primitive 2 = ;
38 M: symbol definer drop \ SYMBOL: ;
40 : init-word ( word -- ) H{ } clone swap set-word-props ;
42 : word-prop ( word name -- value ) swap word-props hash ;
44 : remove-word-prop ( word name -- )
45 swap word-props remove-hash ;
47 : set-word-prop ( word value name -- )
49 [ rot word-props set-hash ]
50 [ nip remove-word-prop ] if ;
52 GENERIC: word-xt ( word -- xt )
53 M: word word-xt 8 integer-slot ;
57 : vocab ( name -- vocab ) vocabularies get hash ;
59 : lookup ( name vocab -- word ) vocab ?hash ;
61 : target-word ( word -- target )
62 dup word-name swap word-vocabulary lookup ;
64 : interned? ( word -- ? ) dup target-word eq? ;
66 : uses ( word -- seq )
69 [ global [ interned? ] bind ] subset
74 : xref-word ( word -- )
76 [ uses ] crossref get add-vertex
81 : usage ( word -- seq ) crossref get in-edges ;
83 : reset-props ( word seq -- ) [ remove-word-prop ] each-with ;
85 : unxref-word* ( word -- )
87 { [ dup compound? not ] [ drop ] }
88 { [ dup "infer" word-prop ] [ drop ] }
91 { "infer-effect" "base-case" "no-effect" }
96 : unxref-word ( word -- )
97 dup [ usage ] closure [ unxref-word* ] each
98 [ uses ] crossref get remove-vertex ;
100 : define ( word def primitive -- )
103 pick set-word-primitive
108 : define-symbol ( word -- )
109 dup symbol? [ drop ] [ dup 2 define ] if ;
111 : intern-symbol ( word -- )
112 dup undefined? [ define-symbol ] [ drop ] if ;
114 : define-compound ( word def -- ) 1 define ;
116 : reset-word ( word -- )
118 "parsing" "inline" "foldable"
119 "predicating" "declared-effect"
122 : reset-generic ( word -- )
123 dup reset-word { "methods" "combination" } reset-props ;
125 : <word> ( name vocab -- word ) (word) dup init-word ;
128 "G:" \ gensym counter number>string append f <word> ;
130 : define-temp ( quot -- word )
131 gensym [ swap define-compound ] keep ;
133 SYMBOL: bootstrapping?
135 : word ( -- word ) \ word get-global ;
137 : set-word ( word -- ) \ word set-global ;
139 : vocabs ( -- seq ) vocabularies get hash-keys natural-sort ;
141 : ensure-vocab ( name -- ) vocabularies get [ nest drop ] bind ;
143 : words ( vocab -- seq ) vocab dup [ hash-values ] when ;
145 : all-words ( -- seq ) vocabs [ words ] map concat ;
147 : word-subset ( quot -- seq )
148 all-words swap subset ; inline
150 : word-subset-with ( obj quot -- seq )
151 all-words swap subset-with ; inline
154 all-words [ uses ] crossref get build-graph ;
156 : create-vocab ( name -- vocab )
157 vocabularies get [ nest ] bind ;
160 dup word-name over word-vocabulary create-vocab set-hash ;
162 TUPLE: check-create name vocab ;
163 : check-create ( name vocab -- name vocab )
164 dup string? [ <check-create> throw ] unless
165 over string? [ <check-create> throw ] unless ;
167 : create ( name vocab -- word )
168 check-create 2dup lookup dup
169 [ 2nip ] [ drop <word> dup reveal ] if ;
171 : constructor-word ( name vocab -- word )
172 >r "<" swap ">" append3 r> create ;
174 : forget-vocab ( vocab -- )
175 words [ forget ] each ;
177 : bootstrap-word ( word -- target )
179 dup word-name swap word-vocabulary
181 drop "!syntax" >r "!" swap append r>
185 : words-named ( str -- seq )
186 all-words [ word-name = ] subset-with ;
188 ! Definition protocol
189 M: word where* "loc" word-prop ;
191 M: word subdefs drop f ;
193 : forget-word ( word -- )
197 crossref get [ dupd remove-hash ] when*
198 dup word-name swap word-vocabulary vocab remove-hash ;
200 M: word forget forget-word ;