factor/library/platform/native/vocabularies.factor

71 lines
2.2 KiB
Factor

! :folding=indent:collapseFolds=1:
! $Id$
!
! Copyright (C) 2004 Slava Pestov.
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions are met:
!
! 1. Redistributions of source code must retain the above copyright notice,
! this list of conditions and the following disclaimer.
!
! 2. Redistributions in binary form must reproduce the above copyright notice,
! this list of conditions and the following disclaimer in the documentation
! and/or other materials provided with the distribution.
!
! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
IN: vocabularies
USE: lists
USE: namespaces
USE: stack
USE: words
: (search) ( name vocab -- word )
vocab dup [ get* ] [ 2drop f ] ifte ;
: search ( name list -- word )
#! Search for a word in a list of vocabularies.
dup [
2dup car (search) dup [
nip nip ( found )
] [
drop cdr search ( check next )
] ifte
] [
2drop f ( not found )
] ifte ;
: create-plist ( name vocab -- plist )
"vocabulary" swons swap "name" swons 2list ;
: (undefined)
#! Primitive# of undefined words.
0 ;
: (create) ( name vocab -- word )
(undefined) f 2swap create-plist <word> ;
: word+ ( name vocab word -- )
swap vocab* put* ;
: create ( name vocab -- word )
#! Create a new word in a vocabulary. If the vocabulary
#! already contains the word, the existing instance is
#! returned.
2dup (search) dup [
nip nip
] [
drop 2dup (create) dup >r word+ r>
] ifte ;