1 ! Copyright (C) 2007 Daniel Ehrenberg
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors combinators kernel lexer locals make math
4 namespaces parser quotations sequences words ;
7 ERROR: bad-heredoc identifier ;
11 : rest-of-line ( lexer -- seq )
12 [ line-text>> ] [ column>> ] bi tail ;
14 : next-line-text ( lexer -- str ? )
15 [ next-line ] [ line-text>> ] [ still-parsing? ] tri ;
17 : (parse-here) ( lexer -- )
21 [ % CHAR: \n , (parse-here) ] if
22 ] [ ";" throw-unexpected-eof ] if ;
26 ERROR: text-found-before-eol string ;
28 : parse-here ( -- str )
31 dup rest-of-line [ text-found-before-eol ] unless-empty
38 ( -- string ) define-inline ;
42 :: (scan-multiline-string) ( i end lexer -- j )
43 lexer line-text>> :> text
44 lexer still-parsing? [
45 end text i start* [| j |
46 i j text subseq % j end length +
48 text i short tail % CHAR: \n ,
50 0 end lexer (scan-multiline-string)
52 ] [ end throw-unexpected-eof ] if ;
54 :: (parse-multiline-string) ( end-text lexer skip-n-chars -- str )
57 [ skip-n-chars + end-text lexer (scan-multiline-string) ]
61 : advance-same-line ( lexer text -- )
62 length [ + ] curry change-column drop ;
64 :: (parse-til-line-begins) ( begin-text lexer -- )
65 lexer still-parsing? [
66 lexer line-text>> begin-text sequence= [
67 lexer begin-text advance-same-line
69 lexer line-text>> % CHAR: \n ,
71 begin-text lexer (parse-til-line-begins)
74 begin-text bad-heredoc
77 : parse-til-line-begins ( begin-text lexer -- seq )
78 [ (parse-til-line-begins) ] "" make ;
82 : parse-multiline-string ( end-text -- str )
83 lexer get 1 (parse-multiline-string) ;
85 SYNTAX: /* "*/" parse-multiline-string drop ;
92 [ parse-til-line-begins ]