version 1.13, 1999/12/03 18:24:23
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version 1.20, 2002/01/05 22:58:59
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\ search order wordset 14may93py |
\ search order wordset 14may93py |
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\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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\ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
\ along with this program; if not, write to the Free Software |
\ along with this program; if not, write to the Free Software |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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$10 constant maxvp |
$10 Value maxvp \ current size of search order stack |
Variable vp |
$400 Value maxvp-limit \ upper limit for resizing search order stack |
0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, |
0 AValue vp \ will be initialized later (dynamic) |
0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, |
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: get-current ( -- wid ) \ search |
: get-current ( -- wid ) \ search |
\G @i{wid} is the identifier of the current compilation word list. |
\G @i{wid} is the identifier of the current compilation word list. |
Line 71 Variable slowvoc 0 slowvoc !
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Line 70 Variable slowvoc 0 slowvoc !
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Create wordlist drop DOES> context ! ; |
Create wordlist drop DOES> context ! ; |
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: check-maxvp ( n -- ) |
: check-maxvp ( n -- ) |
maxvp > -49 and throw ; |
dup maxvp-limit > -49 and throw |
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dup maxvp > IF |
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BEGIN dup maxvp 2* dup TO maxvp <= UNTIL |
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vp maxvp 1+ cells resize throw TO vp |
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THEN drop ; |
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: push-order ( wid -- ) \ gforth |
: >order ( wid -- ) \ gforth to-order |
\g Push @var{wid} on the search order. |
\g Push @var{wid} on the search order. |
vp @ 1+ dup check-maxvp vp! context ! ; |
vp @ 1+ dup check-maxvp vp! context ! ; |
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: also ( -- ) \ search-ext |
: also ( -- ) \ search-ext |
\G Perform a @code{DUP} on the @var{wid} at the top of the search |
\G Like @code{DUP} for the search order. Usually used before a |
\G order. Usually used prior to @code{Forth} etc. |
\G vocabulary (e.g., @code{also Forth}); the combined effect is to push |
context @ push-order ; |
\G the wordlist represented by the vocabulary on the search order. |
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context @ >order ; |
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: previous ( -- ) \ search-ext |
: previous ( -- ) \ search-ext |
\G Perform a @code{DROP} on the @i{wid} at the top of the search |
\G Drop the wordlist at the top of the search order. |
\G order, thereby removing the @i{wid} from the search order. |
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vp @ 1- dup 0= -50 and throw vp! ; |
vp @ 1- dup 0= -50 and throw vp! ; |
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\ vocabulary find 14may93py |
\ vocabulary find 14may93py |
Line 137 Vocabulary Forth ( -- ) \ gforthman- sea
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Line 140 Vocabulary Forth ( -- ) \ gforthman- sea
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Vocabulary Root ( -- ) \ gforth |
Vocabulary Root ( -- ) \ gforth |
\G Add the vocabulary @code{Root} to the search order stack. |
\G Add the root wordlist to the search order stack. This vocabulary |
\G This vocabulary makes up the minimum search order and |
\G makes up the minimum search order and contains only a |
\G contains these words: @code{order} @code{set-order} |
\G search-order words. |
\G @code{forth-wordlist} @code{Forth} @code{words} |
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: Only ( -- ) \ search-ext |
: Only ( -- ) \ search-ext |
\G Set the search order to the implementation-defined minimum search |
\G Set the search order to the implementation-defined minimum search |
\G order (for Gforth, this is the word list @code{Root}). |
\G order (for Gforth, this is the word list @code{Root}). |
1 vp! Root also ; |
1 vp! Root also ; |
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: init-vp ( -- ) |
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$10 TO maxvp |
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maxvp 1+ cells allocate throw TO vp |
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Only Forth also definitions ; |
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:noname |
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init-vp DEFERS 'cold ; |
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IS 'cold |
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init-vp |
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\ set initial search order 14may93py |
\ set initial search order 14may93py |
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Forth-wordlist wordlist-id @ ' Forth >body wordlist-id ! |
Forth-wordlist wordlist-id @ ' Forth >body wordlist-id ! |
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0 vp! also Root also definitions |
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Only Forth also definitions |
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lookup ! \ our dictionary search order becomes the law ( -- ) |
lookup ! \ our dictionary search order becomes the law ( -- ) |
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' Forth >body to Forth-wordlist \ "forth definitions get-current" and "forth-wordlist" should produce the same wid |
' Forth >body to Forth-wordlist \ "forth definitions get-current" and "forth-wordlist" should produce the same wid |
Line 162 lookup ! \ our dictionary search order b
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Line 173 lookup ! \ our dictionary search order b
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: get-order ( -- widn .. wid1 n ) \ search |
: get-order ( -- widn .. wid1 n ) \ search |
\G Copy the search order to the data stack. The current search order |
\G Copy the search order to the data stack. The current search order |
\G has @i{n} entries, of which @i{wid1} represents the word list |
\G has @i{n} entries, of which @i{wid1} represents the wordlist |
\G that is searched first (the word list at the top of the search |
\G that is searched first (the word list at the top of the search |
\G order) and @i{widn} represents the word order that is searched |
\G order) and @i{widn} represents the wordlist that is searched |
\G last. |
\G last. |
vp @ 0 ?DO vp cell+ I cells + @ LOOP vp @ ; |
vp @ 0 ?DO vp cell+ I cells + @ LOOP vp @ ; |
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Line 189 lookup ! \ our dictionary search order b
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Line 200 lookup ! \ our dictionary search order b
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context @ 1 set-order ; |
context @ 1 set-order ; |
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: .voc |
: .voc |
body> >head name>string type space ; |
body> >head-noprim name>string type space ; |
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: order ( -- ) \ gforthman- search-ext |
: order ( -- ) \ gforthman- search-ext |
\G Print the search order and the compilation word list. The |
\G Print the search order and the compilation word list. The |