version 1.12, 1999/11/08 22:01:09
|
version 1.23, 2003/02/06 16:49:17
|
Line 1
|
Line 1
|
\ search order wordset 14may93py |
\ search order wordset 14may93py |
|
|
\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. |
|
|
\ This file is part of Gforth. |
\ This file is part of Gforth. |
|
|
Line 16
|
Line 16
|
|
|
\ 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. |
|
|
$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, |
|
|
|
: 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 38 is context
|
Line 37 is context
|
: vp! ( u -- ) |
: vp! ( u -- ) |
vp ! ; |
vp ! ; |
: definitions ( -- ) \ search |
: definitions ( -- ) \ search |
\G Make the compilation word list the same as the word list |
\G Set the compilation word list to be the same as the word list |
\G that is currently at the top of the search order stack. |
\G that is currently at the top of the search order. |
context @ current ! ; |
context @ current ! ; |
|
|
\ wordlist Vocabulary also previous 14may93py |
\ wordlist Vocabulary also previous 14may93py |
Line 65 Variable slowvoc 0 slowvoc !
|
Line 64 Variable slowvoc 0 slowvoc !
|
|
|
: Vocabulary ( "name" -- ) \ gforth |
: Vocabulary ( "name" -- ) \ gforth |
\G Create a definition "name" and associate a new word list with it. |
\G Create a definition "name" and associate a new word list with it. |
\G The run-time effect of "name" is to push the new word list's wid |
\G The run-time effect of "name" is to replace the @i{wid} at the |
\G onto the top of the search order stack. |
\G top of the search order with the @i{wid} associated with the new |
|
\G word list. |
Create wordlist drop DOES> context ! ; |
Create wordlist drop DOES> context ! ; |
|
|
: check-maxvp ( n -- ) |
: check-maxvp ( n -- ) |
maxvp > -49 and throw ; |
dup maxvp-limit > -49 and throw |
|
dup maxvp > IF |
|
BEGIN dup maxvp 2* dup TO maxvp <= UNTIL |
|
vp maxvp 1+ cells resize throw TO vp |
|
THEN drop ; |
|
|
: 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 ! ; |
|
|
: also ( -- ) \ search ext |
: also ( -- ) \ search-ext |
\G Perform a @code{DUP} on the search order stack. Usually used prior |
\G Like @code{DUP} for the search order. Usually used before a |
\G to @code{Forth}, @code{definitions} 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. |
|
context @ >order ; |
: previous ( -- ) \ search ext |
|
\G Perform a @code{DROP} on the search order stack, thereby removing |
: previous ( -- ) \ search-ext |
\G the wid at the top of the (search order) stack from the search |
\G Drop the wordlist at the top of the search order. |
\G order. |
|
vp @ 1- dup 0= -50 and throw vp! ; |
vp @ 1- dup 0= -50 and throw vp! ; |
|
|
\ vocabulary find 14may93py |
\ vocabulary find 14may93py |
Line 131 slowvoc off
|
Line 134 slowvoc off
|
|
|
\ Only root 14may93py |
\ Only root 14may93py |
|
|
Vocabulary Forth ( -- ) \ thisone- search-ext |
Vocabulary Forth ( -- ) \ gforthman- search-ext |
\G Push the @i{wid} associated with @code{forth-wordlist} onto the |
\G Replace the @i{wid} at the top of the search order with the |
\G search order stack. |
\G @i{wid} associated with the word list @code{forth-wordlist}. |
|
|
|
|
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} |
|
|
|
: 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 ; |
|
|
|
: update-image-order ( -- ) |
|
\ save search order here, let vp point there |
|
here vp over vp @ 1+ cells |
|
dup allot move |
|
to vp ; |
|
|
|
: init-vp ( -- ) |
|
vp @ $10 max to maxvp |
|
maxvp 1+ cells allocate throw |
|
vp over vp @ 1+ cells move |
|
TO vp ; |
|
|
|
:noname |
|
init-vp DEFERS 'cold ; |
|
IS 'cold |
|
|
|
here 0 , to vp |
|
|
|
init-vp Only Forth also definitions |
|
|
\ set initial search order 14may93py |
\ set initial search order 14may93py |
|
|
Forth-wordlist wordlist-id @ ' Forth >body wordlist-id ! |
Forth-wordlist wordlist-id @ ' Forth >body wordlist-id ! |
|
|
0 vp! also Root also definitions |
|
Only Forth also definitions |
|
lookup ! \ our dictionary search order becomes the law ( -- ) |
lookup ! \ our dictionary search order becomes the law ( -- ) |
|
|
' 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 160 lookup ! \ our dictionary search order b
|
Line 181 lookup ! \ our dictionary search order b
|
\ get-order set-order 14may93py |
\ get-order set-order 14may93py |
|
|
: get-order ( -- widn .. wid1 n ) \ search |
: get-order ( -- widn .. wid1 n ) \ search |
\G Copy the search order stack to the data stack. The current search |
\G Copy the search order to the data stack. The current search order |
\G order has @i{n} entries, of which @i{wid1} represents the word |
\G has @i{n} entries, of which @i{wid1} represents the wordlist |
\G list that is searched first (the word list at the top of the stack) and |
\G that is searched first (the word list at the top of the search |
\G @i{widn} represents the word order that is searched last. |
\G order) and @i{widn} represents the wordlist that is searched |
vp @ 0 ?DO vp cell+ I cells + @ LOOP vp @ ; |
\G last. |
|
vp @ 0 ?DO vp cell+ I cells + @ LOOP vp @ ; |
|
|
: set-order ( widn .. wid1 n -- ) \ thisone- search |
: set-order ( widn .. wid1 n -- ) \ gforthman- search |
\G If @var{n}=0, empty the search order. If @var{n}=-1, set the |
\G If @var{n}=0, empty the search order. If @var{n}=-1, set the |
\G search order to the implementation-defined minimum search order |
\G search order to the implementation-defined minimum search order |
\G (for Gforth, this is the word list @code{Root}). Otherwise, |
\G (for Gforth, this is the word list @code{Root}). Otherwise, |
Line 187 lookup ! \ our dictionary search order b
|
Line 209 lookup ! \ our dictionary search order b
|
context @ 1 set-order ; |
context @ 1 set-order ; |
|
|
: .voc |
: .voc |
body> >head name>string type space ; |
body> >head-noprim name>string type space ; |
|
|
: order ( -- ) \ thisone- 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 |
\G word lists are printed in the order in which they are searched |
\G word lists are printed in the order in which they are searched |
\G (which is reversed with respect to the conventional way of |
\G (which is reversed with respect to the conventional way of |
Line 222 Root definitions
|
Line 244 Root definitions
|
' forth-wordlist alias forth-wordlist ( -- wid ) \ search |
' forth-wordlist alias forth-wordlist ( -- wid ) \ search |
\G @code{Constant} -- @i{wid} identifies the word list that includes all of the standard words |
\G @code{Constant} -- @i{wid} identifies the word list that includes all of the standard words |
\G provided by Gforth. When Gforth is invoked, this word list is the compilation word |
\G provided by Gforth. When Gforth is invoked, this word list is the compilation word |
\G list and is at the top of the word list stack. |
\G list and is at the top of the search order. |
' set-order alias set-order |
' set-order alias set-order |
' order alias order |
' order alias order |
|
|