1 ! Copyright (C) 2007, 2009 Slava Pestov, Eduardo Cavazos.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays combinators effects.parser
4 generic.parser kernel lexer locals.errors fry
5 locals.rewrite.closures locals.types make namespaces parser
6 quotations sequences splitting words vocabs.parser ;
11 : ?rewrite-closures ( form -- form' )
12 in-lambda? get [ 1array ] [ rewrite-closures ] if ;
14 : make-local ( name -- word )
17 dup <local-writer> dup name>> set
21 : make-locals ( seq -- words assoc )
22 [ [ make-local ] map ] H{ } make-assoc ;
24 : parse-local-defs ( -- words assoc )
25 [ "|" [ make-local ] map-tokens ] H{ } make-assoc ;
27 SINGLETON: lambda-parser
31 : ((parse-lambda)) ( assoc quot -- quot' )
34 lambda-parser quotation-parser set
40 : (parse-lambda) ( assoc -- quot )
41 [ \ ] parse-until >quotation ] ((parse-lambda)) ;
43 : parse-lambda ( -- lambda )
45 (parse-lambda) <lambda>
48 : parse-multi-def ( locals -- multi-def )
49 [ ")" [ make-local ] map-tokens ] with-variables <multi-def> ;
51 : parse-def ( name/paren locals -- def )
52 over "(" = [ nip parse-multi-def ] [ [ make-local ] with-variables <def> ] if ;
54 M: lambda-parser parse-quotation ( -- quotation )
55 H{ } clone (parse-lambda) ;
57 : parse-binding ( end -- pair/f )
59 { [ 2dup = ] [ 2drop f ] }
60 [ nip scan-object 2array ]
63 : parse-let ( -- form )
64 H{ } clone (parse-lambda) <let> ?rewrite-closures ;
66 : parse-locals ( -- effect vars assoc )
69 in>> [ dup pair? [ first ] when ] map make-locals ;
71 : (parse-locals-definition) ( effect vars assoc reader -- word quot effect )
72 ((parse-lambda)) <lambda>
73 [ nip "lambda" set-word-prop ]
74 [ nip rewrite-closures dup length 1 = [ first ] [ bad-rewrite ] if ]
75 [ drop nip ] 3tri ; inline
77 : parse-locals-definition ( word reader -- word quot effect )
78 [ parse-locals ] dip (parse-locals-definition) ; inline
80 : parse-locals-method-definition ( word reader -- word quot effect )
81 [ parse-locals pick check-method-effect ] dip
82 (parse-locals-definition) ; inline
84 : (::) ( -- word def effect )
87 parse-locals-definition ;
89 : (M::) ( -- word def )
93 parse-locals-method-definition drop
94 ] with-method-definition ;