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|
\ ** ficl/softwords/softcore.fr
\ ** FICL soft extensions
\ ** John Sadler (john_sadler@alum.mit.edu)
\ ** September, 1998
\ ** Ficl USER variables
\ ** See words.c for primitive def'n of USER
.( loading ficl soft extensions ) cr
\ #if FICL_WANT_USER
variable nUser 0 nUser !
: user \ name ( -- )
nUser dup @ user 1 swap +! ;
\ #endif
\ ** ficl extras
\ EMPTY cleans the parameter stack
: empty ( xn..x1 -- ) depth 0 ?do drop loop ;
\ CELL- undoes CELL+
: cell- ( addr -- addr ) [ 1 cells ] literal - ;
: -rot ( a b c -- c a b ) 2 -roll ;
\ ** CORE
: abs ( x -- x )
dup 0< if negate endif ;
decimal 32 constant bl
: space ( -- ) bl emit ;
: spaces ( n -- ) 0 ?do space loop ;
: abort"
state @ if
postpone if
postpone ."
postpone cr
-2
postpone literal
postpone throw
postpone endif
else
[char] " parse
rot if
type
cr
-2 throw
else
2drop
endif
endif
; immediate
\ ** CORE EXT
.( loading CORE EXT words ) cr
0 constant false
false invert constant true
: <> = 0= ;
: 0<> 0= 0= ;
: compile, , ;
: convert char+ 65535 >number drop ; \ cribbed from DPANS A.6.2.0970
: erase ( addr u -- ) 0 fill ;
variable span
: expect ( c-addr u1 -- ) accept span ! ;
\ see marker.fr for MARKER implementation
: nip ( y x -- x ) swap drop ;
: tuck ( y x -- x y x) swap over ;
: within ( test low high -- flag ) over - >r - r> u< ;
\ ** LOCAL EXT word set
\ #if FICL_WANT_LOCALS
: locals| ( name...name | -- )
begin
bl word count
dup 0= abort" where's the delimiter??"
over c@
[char] | - over 1- or
while
(local)
repeat 2drop 0 0 (local)
; immediate
: local ( name -- ) bl word count (local) ; immediate
: 2local ( name -- ) bl word count (2local) ; immediate
: end-locals ( -- ) 0 0 (local) ; immediate
\ #endif
\ ** TOOLS word set...
: ? ( addr -- ) @ . ;
: dump ( addr u -- )
0 ?do
dup c@ . 1+
i 7 and 7 = if cr endif
loop drop
;
\ ** SEARCH+EXT words and ficl helpers
.( loading SEARCH & SEARCH-EXT words ) cr
\ BRAND-WORDLIST is a helper for ficl-named-wordlist. Usage idiom:
\ wordlist dup create , brand-wordlist
\ gets the name of the word made by create and applies it to the wordlist...
: brand-wordlist ( wid -- ) last-word >name drop wid-set-name ;
: ficl-named-wordlist \ ( hash-size name -- ) run: ( -- wid )
ficl-wordlist dup create , brand-wordlist does> @ ;
: wordlist ( -- )
1 ficl-wordlist ;
\ FICL-SET-CURRENT sets the compile wordlist and pushes the previous value
: ficl-set-current ( wid -- old-wid )
get-current swap set-current ;
\ DO_VOCABULARY handles the DOES> part of a VOCABULARY
\ When executed, new voc replaces top of search stack
: do-vocabulary ( -- )
does> @ search> drop >search ;
: ficl-vocabulary ( nBuckets name -- )
ficl-named-wordlist do-vocabulary ;
: vocabulary ( name -- )
1 ficl-vocabulary ;
\ PREVIOUS drops the search order stack
: previous ( -- ) search> drop ;
\ HIDDEN vocabulary is a place to keep helper words from cluttering the namespace
\ USAGE:
\ hide
\ <definitions to hide>
\ set-current
\ <words that use hidden defs>
\ previous ( pop HIDDEN off the search order )
1 ficl-named-wordlist hidden
: hide hidden dup >search ficl-set-current ;
\ ALSO dups the search stack...
: also ( -- )
search> dup >search >search ;
\ FORTH drops the top of the search stack and pushes FORTH-WORDLIST
: forth ( -- )
search> drop
forth-wordlist >search ;
\ ONLY sets the search order to a default state
: only ( -- )
-1 set-order ;
\ ORDER displays the compile wid and the search order list
hide
: list-wid ( wid -- )
dup wid-get-name ( wid c-addr u )
?dup if
type drop
else
drop ." (unnamed wid) " x.
endif cr
;
set-current \ stop hiding words
: order ( -- )
." Search:" cr
get-order 0 ?do 3 spaces list-wid loop cr
." Compile: " get-current list-wid cr
;
: debug ' debug-xt ; immediate
: on-step ." S: " .s cr ;
\ Submitted by lch.
: strdup ( c-addr length -- c-addr2 length2 ior )
0 locals| addr2 length c-addr | end-locals
length 1 + allocate
0= if
to addr2
c-addr addr2 length move
addr2 length 0
else
0 -1
endif
;
: strcat ( 2:a 2:b -- 2:new-a )
0 locals| b-length b-u b-addr a-u a-addr | end-locals
b-u to b-length
b-addr a-addr a-u + b-length move
a-addr a-u b-length +
;
: strcpy ( 2:a 2:b -- 2:new-a )
locals| b-u b-addr a-u a-addr | end-locals
a-addr 0 b-addr b-u strcat
;
previous \ lose hidden words from search order
\ ** E N D S O F T C O R E . F R
|
