1 ! Copyright (C) 2008, 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays kernel continuations assocs namespaces
4 sequences words vocabs definitions hashtables init sets math
5 math.order classes classes.private classes.algebra classes.tuple
6 classes.tuple.private generic source-files.errors kernel.private ;
9 SYMBOL: old-definitions
10 SYMBOL: new-definitions
12 TUPLE: redefine-error def ;
14 : redefine-error ( definition -- )
15 \ redefine-error boa throw-continue ;
19 : add-once ( key assoc -- )
20 2dup key? [ over redefine-error ] when conjoin ;
22 : (remember-definition) ( definition loc assoc -- )
23 [ over set-where ] dip add-once ;
27 : remember-definition ( definition loc -- )
28 new-definitions get first (remember-definition) ;
30 : fake-definition ( definition -- )
31 old-definitions get [ delete-at ] with each ;
33 : remember-class ( class loc -- )
34 [ dup new-definitions get first key? [ dup redefine-error ] when ] dip
35 new-definitions get second (remember-definition) ;
37 : forward-reference? ( word -- ? )
38 dup old-definitions get assoc-stack
39 [ new-definitions get assoc-stack not ]
44 HOOK: update-call-sites compiler-impl ( class generic -- words )
46 : changed-call-sites ( class generic -- )
47 update-call-sites [ changed-definition ] each ;
49 M: generic update-generic ( class generic -- )
50 [ changed-call-sites ]
51 [ remake-generic drop ]
52 [ changed-conditionally drop ]
55 M: sequence update-methods ( class seq -- )
56 implementors [ update-generic ] with each ;
58 HOOK: recompile compiler-impl ( words -- alist )
60 HOOK: to-recompile compiler-impl ( -- words )
62 HOOK: process-forgotten-words compiler-impl ( words -- )
64 : compile ( words -- )
65 recompile t f modify-code-heap ;
67 ! Non-optimizing compiler
68 M: f update-call-sites
72 changed-definitions get [ drop word? ] assoc-filter keys ;
75 [ dup def>> ] { } map>assoc ;
77 M: f process-forgotten-words drop ;
79 : without-optimizer ( quot -- )
80 [ f compiler-impl ] dip with-variable ; inline
82 : <definitions> ( -- pair ) { H{ } H{ } } [ clone ] map ;
84 SYMBOL: definition-observers
86 GENERIC: definitions-changed ( assoc obj -- )
88 [ V{ } clone definition-observers set-global ]
89 "compiler.units" add-startup-hook
91 ! This goes here because vocabs cannot depend on init
92 [ V{ } clone vocab-observers set-global ]
93 "vocabs" add-startup-hook
95 : add-definition-observer ( obj -- )
96 definition-observers get push ;
98 : remove-definition-observer ( obj -- )
99 definition-observers get remove-eq! drop ;
101 : notify-definition-observers ( assoc -- )
102 definition-observers get
103 [ definitions-changed ] with each ;
105 ! Incremented each time stack effects potentially changed, used
106 ! by compiler.tree.propagation.call-effect for call( and execute(
108 : effect-counter ( -- n ) 47 special-object ; inline
110 GENERIC: always-bump-effect-counter? ( defspec -- ? )
112 M: object always-bump-effect-counter? drop f ;
116 : changed-vocabs ( assoc -- vocabs )
117 [ drop word? ] assoc-filter
118 [ drop vocabulary>> dup [ vocab ] when dup ] assoc-map ;
120 : updated-definitions ( -- assoc )
122 forgotten-definitions get assoc-union!
123 new-definitions get first assoc-union!
124 new-definitions get second assoc-union!
125 changed-definitions get assoc-union!
126 maybe-changed get assoc-union!
127 dup changed-vocabs assoc-union! ;
129 : process-forgotten-definitions ( -- )
130 forgotten-definitions get keys
131 [ [ word? ] filter process-forgotten-words ]
132 [ [ delete-definition-errors ] each ]
135 : bump-effect-counter? ( -- ? )
138 changed-definitions get [ drop always-bump-effect-counter? ] assoc-filter
139 3array assoc-combine new-words get assoc-diff assoc-empty? not ;
141 : bump-effect-counter ( -- )
142 bump-effect-counter? [
143 47 special-object 0 or
145 47 set-special-object
148 : notify-observers ( -- )
149 updated-definitions dup assoc-empty?
150 [ drop ] [ notify-definition-observers notify-error-observers ] if ;
152 : update-existing? ( defs -- ? )
153 new-words get keys diff empty? not ;
155 : reset-pics? ( -- ? )
156 outdated-generics get assoc-empty? not ;
158 : finish-compilation-unit ( -- )
164 process-forgotten-definitions
165 ] keep update-existing? reset-pics? modify-code-heap
170 TUPLE: nesting-observer new-words ;
172 M: nesting-observer definitions-changed new-words>> swap assoc-diff! drop ;
174 : add-nesting-observer ( -- )
175 new-words get nesting-observer boa
176 [ nesting-observer set ] [ add-definition-observer ] bi ;
178 : remove-nesting-observer ( -- )
179 nesting-observer get remove-definition-observer ;
183 : with-nested-compilation-unit ( quot -- )
185 H{ } clone changed-definitions set
186 H{ } clone maybe-changed set
187 H{ } clone changed-effects set
188 H{ } clone outdated-generics set
189 H{ } clone outdated-tuples set
190 H{ } clone new-words set
193 remove-nesting-observer
194 finish-compilation-unit
196 ] with-scope ; inline
198 : with-compilation-unit ( quot -- )
200 <definitions> new-definitions set
201 <definitions> old-definitions set
202 H{ } clone forgotten-definitions set
203 with-nested-compilation-unit
204 ] with-scope ; inline