1 ! Copyright (C) 2007 Daniel Ehrenberg
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: namespaces make parser lexer kernel sequences words
4 quotations math accessors locals ;
7 ERROR: bad-heredoc identifier ;
10 : next-line-text ( -- str )
11 lexer get dup next-line line-text>> ;
16 [ drop lexer get next-line ]
17 [ % "\n" % (parse-here) ] if
18 ] [ ";" unexpected-eof ] if* ;
21 : parse-here ( -- str )
22 [ (parse-here) ] "" make but-last
28 (( -- string )) define-inline ;
32 :: (scan-multiline-string) ( i end -- j )
33 lexer get line-text>> :> text
35 end text i start* [| j |
36 i j text subseq % j end length +
38 text i short tail % CHAR: \n ,
40 0 end (scan-multiline-string)
42 ] [ end unexpected-eof ] if ;
44 :: (parse-multiline-string) ( end-text skip-n-chars -- str )
47 [ skip-n-chars + end-text (scan-multiline-string) ]
51 : rest-of-line ( -- seq )
52 lexer get [ line-text>> ] [ column>> ] bi tail ;
54 :: advance-same-line ( text -- )
55 lexer get [ text length + ] change-column drop ;
57 :: (parse-til-line-begins) ( begin-text -- )
58 lexer get still-parsing? [
59 lexer get line-text>> begin-text sequence= [
60 begin-text advance-same-line
62 lexer get line-text>> % "\n" %
64 begin-text (parse-til-line-begins)
67 begin-text bad-heredoc
70 : parse-til-line-begins ( begin-text -- seq )
71 [ (parse-til-line-begins) ] "" make ;
75 : parse-multiline-string ( end-text -- str )
76 1 (parse-multiline-string) ;
78 SYNTAX: /* "*/" parse-multiline-string drop ;
84 parse-til-line-begins parsed ;
90 0 (parse-multiline-string) parsed ;