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Minor formatting changes

db4
James Cash 2008-04-30 16:59:50 -04:00
parent ec95cef85e
commit 598bb166de
1 changed files with 31 additions and 8 deletions
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39
extra/lisp/lisp.factor
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@ -5,21 +5,24 @@ namespaces combinators math bake locals.private accessors vectors syntax lisp.pa
IN: lisp
DEFER: convert-form
DEFER: funcall
! Functions to convert s-exps to quotations
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: convert-body ( s-exp -- quot )
[ convert-form ] map reverse [ ] [ compose ] reduce ; inline
: convert-if ( s-exp -- quot )
1 tail [ convert-form ] map reverse first3 [ % , , if ] bake ;
rest [ convert-form ] map reverse first3 [ % , , if ] bake ;
: convert-begin ( s-exp -- quot )
1 tail convert-body ;
rest convert-body ;
: convert-cond ( s-exp -- quot )
1 tail [ [ convert-body map ] map ] [ % cond ] bake ;
rest [ [ convert-body map ] map ] [ % cond ] bake ;
: convert-general-form ( s-exp -- quot )
unclip swap convert-body [ % , ] bake ;
unclip swap convert-body [ % , funcall ] bake ;
<PRIVATE
: localize-body ( vars body -- newbody )
@ -31,19 +34,39 @@ PRIVATE>
first3 -rot nip [ body>> ] bi@ reverse [ name>> ] map dup make-locals dup push-locals
[ swap localize-body convert-body ] dipd pop-locals swap <lambda> ;
: convert-quoted ( s-exp -- quot )
second [ , ] bake ;
: convert-list-form ( s-exp -- quot )
dup first dup lisp-symbol? [ name>>
dup first dup lisp-symbol?
[ name>>
{ { "lambda" [ convert-lambda ] }
{ "quote" [ convert-quoted ] }
{ "if" [ convert-if ] }
{ "begin" [ convert-begin ] }
{ "cond" [ convert-cond ] }
[ drop convert-general-form ]
} case ] [ drop convert-general-form ] if ;
} case ]
[ drop convert-general-form ] if ;
: convert-form ( lisp-form -- quot )
{ { [ dup s-exp? ] [ body>> convert-list-form ] }
[ [ , ] [ ] make ]
} cond ;
: lisp-string>factor ( str -- quot )
lisp-expr parse-result-ast convert-form ;
: lisp-string>factor ( str -- quot )
lisp-expr parse-result-ast convert-form ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
SYMBOL: lisp-env
H{ } clone lisp-env set
: define-lisp-word ( name body -- )
lisp-env get set-at ;
: get-lisp-word ( name -- word )
lisp-env get at ;
: funcall ( quot sym -- * )
name>> get-lisp-word call ;