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Bug fixes

db4
James Cash 2008-04-26 17:20:12 -04:00
parent 1ad1f5ceba
commit 0c10c13e4d
1 changed files with 20 additions and 46 deletions
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66
extra/lisp/lisp.factor
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@ -1,53 +1,24 @@
! Copyright (C) 2008 James Cash
! See http://factorcode.org/license.txt for BSD license.
USING: kernel peg.ebnf peg.expr math.parser sequences arrays strings combinators.lib
namespaces combinators math bake locals.private accessors vectors syntax ;
USING: kernel peg sequences arrays strings combinators.lib
namespaces combinators math bake locals.private accessors vectors syntax lisp.parser ;
IN: lisp
TUPLE: lisp-symbol name ;
C: <lisp-symbol> lisp-symbol
EBNF: lisp-expr
_ = (" " | "\t" | "\n")*
LPAREN = "("
RPAREN = ")"
dquote = '"'
digit = [0-9]
integer = (digit)+ => [[ string>number ]]
float = (digit)+ "." (digit)* => [[ first3 >string [ >string ] dipd 3append string>number ]]
number = float
| integer
id-specials = "!" | "$" | "%" | "&" | "*" | "/" | ":" | "<"
| " =" | ">" | "?" | "^" | "_" | "~" | "+" | "-" | "." | "@"
letters = [a-zA-Z] => [[ 1array >string ]]
initials = letters | id-specials
numbers = [0-9] => [[ 1array >string ]]
subsequents = initials | numbers
identifier = initials (subsequents)* => [[ first2 concat append <lisp-symbol> ]]
string = dquote ("\" . | !(dquote) . )* dquote => [[ second >string ]]
atom = number
| identifier
| string
list-item = _ (atom|list) _ => [[ second ]]
list = LPAREN (list-item)* RPAREN => [[ second ]]
;EBNF
DEFER: convert-form
: convert-body ( lisp-form -- quot )
: convert-body ( s-exp -- quot )
[ convert-form ] map [ ] [ compose ] reduce ; inline
: convert-if ( lisp-form -- quot )
: convert-if ( s-exp -- quot )
1 tail [ convert-form ] map reverse first3 [ % , , if ] bake ;
: convert-begin ( lisp-form -- quot )
: convert-begin ( s-exp -- quot )
1 tail convert-body ;
: convert-cond ( lisp-form -- quot )
: convert-cond ( s-exp -- quot )
1 tail [ [ convert-body map ] map ] [ % cond ] bake ;
: convert-general-form ( lisp-form -- quot )
: convert-general-form ( s-exp -- quot )
unclip swap convert-body [ % , ] bake ;
<PRIVATE
@ -56,20 +27,23 @@ DEFER: convert-form
[ dup vector? [ localize-body ] [ nip ] if ] if ] with map ; inline
PRIVATE>
: convert-lambda ( lisp-form -- quot )
: convert-lambda ( s-exp -- quot )
1 tail unclip reverse [ name>> ] map dup make-locals dup push-locals
[ swap localize-body convert-body ] dipd pop-locals swap <lambda> ;
: convert-list-form ( lisp-form -- quot )
dup first dup lisp-symbol? [ name>>
{ { "lambda" [ convert-lambda ] }
{ "if" [ convert-if ] }
{ "begin" [ convert-begin ] }
{ "cond" [ convert-cond ] }
[ drop convert-general-form ]
} case ] [ drop convert-general-form ] if ;
: convert-list-form ( s-exp -- quot )
dup first dup lisp-symbol? [ name>>
{ { "lambda" [ convert-lambda ] }
{ "if" [ convert-if ] }
{ "begin" [ convert-begin ] }
{ "cond" [ convert-cond ] }
[ drop convert-general-form ]
} case ] [ drop convert-general-form ] if ;
: convert-form ( lisp-form -- quot )
{ { [ dup vector? ] [ convert-list-form ] }
[ [ , ] [ ] make ]
} cond ;
} cond ;
: lisp-string>factor ( str -- quot )
lisp-expr parse-result-ast convert-form ;