factor/basis/vocabs/cache/cache.factor

! Copyright (C) 2009 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: assocs fry init kernel memoize namespaces sequences
vocabs vocabs.hierarchy vocabs.loader vocabs.metadata
vocabs.refresh words ;
IN: vocabs.cache

: reset-cache ( vocab -- )
    vocab-name
    [ root-cache get-global delete-at ]
    [
        \ vocab-file-contents "memoize" word-prop
        '[ drop first vocab-name _ = not ] assoc-filter! drop
    ] bi
    \ all-vocabs-recursive reset-memoized
    \ all-authors reset-memoized
    \ all-tags reset-memoized ;

SINGLETON: cache-observer

M: cache-observer vocab-changed drop reset-cache ;

[
    f changed-vocabs set-global
    cache-observer add-vocab-observer
] "vocabs.cache" add-startup-hook