steve
/
factor
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Minor changes

db4
James Cash 2008-07-02 23:54:06 -04:00
parent 2a36571ca2
commit 5fc2942893
1 changed files with 36 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
extra/lisp/lisp.factor
View File

@ -13,22 +13,22 @@ DEFER: lookup-macro
DEFER: lisp-macro?
DEFER: lisp-var?
DEFER: define-lisp-macro
! Functions to convert s-exps to quotations
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: convert-body ( cons -- quot )
[ ] [ convert-form compose ] foldl ; inline
: convert-cond ( cons -- quot )
: convert-cond ( cons -- quot )
cdr [ 2car [ convert-form ] bi@ 2array ]
{ } lmap-as '[ , cond ] ;
: convert-general-form ( cons -- quot )
uncons [ convert-body ] [ convert-form ] bi* '[ , @ funcall ] ;
! words for convert-lambda
<PRIVATE
: localize-body ( assoc body -- assoc newbody )
! words for convert-lambda
<PRIVATE
: localize-body ( assoc body -- assoc newbody )
{
{ [ dup list? ] [ [ lisp-symbol? ] pick '[ [ name>> , at ] [ ] bi or ] traverse ] }
{ [ dup lisp-symbol? ] [ name>> over at ] }
@ -38,31 +38,31 @@ DEFER: define-lisp-macro
: localize-lambda ( body vars -- newvars newbody )
make-locals dup push-locals swap
[ swap localize-body convert-form swap pop-locals ] dip swap ;
: split-lambda ( cons -- body-cons vars-seq )
cdr uncons [ car ] [ [ name>> ] lmap>array ] bi* ; inline
: rest-lambda ( body vars -- quot )
"&rest" swap [ index ] [ remove ] 2bi
swapd localize-lambda <lambda> lambda-rewrite call
'[ , cut '[ @ , seq>list ] call , call ] ;
: normal-lambda ( body vars -- quot )
localize-lambda <lambda> lambda-rewrite [ compose call ] compose 1quotation ;
PRIVATE>
: convert-lambda ( cons -- quot )
: convert-lambda ( cons -- quot )
split-lambda "&rest" over member? [ rest-lambda ] [ normal-lambda ] if ;
: convert-quoted ( cons -- quot )
: convert-quoted ( cons -- quot )
cadr 1quotation ;
: convert-defmacro ( cons -- quot )
cdr [ car ] keep [ convert-lambda ] [ car name>> ] bi define-lisp-macro 1quotation ;
: macro-expand ( cons -- quot )
uncons [ list>seq >quotation ] [ lookup-macro ] bi* call convert-form ;
: form-dispatch ( cons lisp-symbol -- quot )
name>>
{ { "lambda" [ convert-lambda ] }
@ -71,14 +71,14 @@ PRIVATE>
{ "cond" [ convert-cond ] }
[ drop convert-general-form ]
} case ;
: convert-list-form ( cons -- quot )
: convert-list-form ( cons -- quot )
dup car
{ { [ dup lisp-macro? ] [ drop macro-expand ] }
{ [ dup lisp-symbol? ] [ form-dispatch ] }
{ [ dup lisp-symbol? ] [ form-dispatch ] }
[ drop convert-general-form ]
} cond ;
: convert-form ( lisp-form -- quot )
{
{ [ dup cons? ] [ convert-list-form ] }
@ -86,18 +86,18 @@ PRIVATE>
{ [ dup lisp-symbol? ] [ '[ , lookup-var ] ] }
[ 1quotation ]
} cond ;
: lisp-string>factor ( str -- quot )
lisp-expr compile-form ;
: lisp-eval ( str -- * )
lisp-string>factor call ;
lisp-string>factor call ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
SYMBOL: lisp-env
SYMBOL: macro-env
ERROR: no-such-var variable-name ;
M: no-such-var summary drop "No such variable" ;
@ -107,31 +107,31 @@ M: no-such-var summary drop "No such variable" ;
: lisp-define ( quot name -- )
lisp-env get set-at ;
: defun ( name quot -- name )
: defun ( name quot -- name )
over name>> lisp-define ;
: lisp-get ( name -- word )
lisp-env get at ;
: lookup-var ( lisp-symbol -- quot )
[ name>> ] [ lisp-var? ] bi [ lisp-get ] [ no-such-var ] if ;
: lisp-var? ( lisp-symbol -- ? )
dup lisp-symbol? [ name>> lisp-env get key? ] [ drop f ] if ;
: funcall ( quot sym -- * )
[ 1array [ call ] with-datastack >quotation ] dip
dup lisp-symbol? [ lookup-var ] when curry call ; inline
: define-primitive ( name vocab word -- )
: define-primitive ( name vocab word -- )
swap lookup 1quotation '[ , compose call ] swap lisp-define ;
: lookup-macro ( lisp-symbol -- lambda )
name>> macro-env get at ;
: define-lisp-macro ( quot name -- )
macro-env get set-at ;
: lisp-macro? ( car -- ? )
dup lisp-symbol? [ name>> macro-env get key? ] [ drop f ] if ;