! Copyright (C) 2007 Daniel Ehrenberg
! See http://factorcode.org/license.txt for BSD license.
-USING: namespaces make parser lexer kernel sequences words
-quotations math accessors locals ;
+USING: accessors combinators kernel lexer locals make math
+namespaces parser quotations sequences words ;
IN: multiline
ERROR: bad-heredoc identifier ;
<PRIVATE
-: rest-of-line ( -- seq )
- lexer get [ line-text>> ] [ column>> ] bi tail ;
+: rest-of-line ( lexer -- seq )
+ [ line-text>> ] [ column>> ] bi tail ;
-: next-line-text ( -- str )
- lexer get [ next-line ] [ line-text>> ] bi ;
+: next-line-text ( lexer -- str )
+ [ next-line ] [ line-text>> ] bi ;
-: (parse-here) ( -- )
- next-line-text [
+: (parse-here) ( lexer -- )
+ dup next-line-text [
dup ";" =
- [ drop lexer get next-line ]
- [ % "\n" % (parse-here) ] if
- ] [ ";" throw-unexpected-eof ] if* ;
+ [ drop next-line ]
+ [ % CHAR: \n , (parse-here) ] if
+ ] [ drop ";" throw-unexpected-eof ] if* ;
PRIVATE>
: parse-here ( -- str )
[
- rest-of-line dup [ drop ] [ text-found-before-eol ] if-empty
+ lexer get
+ dup rest-of-line [ text-found-before-eol ] unless-empty
(parse-here)
] "" make but-last ;
: lexer-eof? ( lexer -- ? )
[ line>> ] [ text>> length ] bi <= ;
-:: (scan-multiline-string) ( i end -- j )
- lexer get line-text>> :> text
- lexer get lexer-eof? [
+:: (scan-multiline-string) ( i end lexer -- j )
+ lexer line-text>> :> text
+ lexer lexer-eof? [
end text i start* [| j |
i j text subseq % j end length +
] [
text i short tail % CHAR: \n ,
- lexer get next-line
- 0 end (scan-multiline-string)
+ lexer next-line
+ 0 end lexer (scan-multiline-string)
] if*
] [ end throw-unexpected-eof ] if ;
-:: (parse-multiline-string) ( end-text skip-n-chars -- str )
+:: (parse-multiline-string) ( end-text lexer skip-n-chars -- str )
[
- lexer get
- [ skip-n-chars + end-text (scan-multiline-string) ]
+ lexer
+ [ skip-n-chars + end-text lexer (scan-multiline-string) ]
change-column drop
] "" make ;
-:: advance-same-line ( text -- )
- lexer get [ text length + ] change-column drop ;
+: advance-same-line ( lexer text -- )
+ length [ + ] curry change-column drop ;
-:: (parse-til-line-begins) ( begin-text -- )
- lexer get still-parsing? [
- lexer get line-text>> begin-text sequence= [
- begin-text advance-same-line
+:: (parse-til-line-begins) ( begin-text lexer -- )
+ lexer still-parsing? [
+ lexer line-text>> begin-text sequence= [
+ lexer begin-text advance-same-line
] [
- lexer get line-text>> % "\n" %
- lexer get next-line
- begin-text (parse-til-line-begins)
+ lexer line-text>> % CHAR: \n ,
+ lexer next-line
+ begin-text lexer (parse-til-line-begins)
] if
] [
begin-text bad-heredoc
] if ;
-: parse-til-line-begins ( begin-text -- seq )
+: parse-til-line-begins ( begin-text lexer -- seq )
[ (parse-til-line-begins) ] "" make ;
PRIVATE>
: parse-multiline-string ( end-text -- str )
- 1 (parse-multiline-string) ;
+ lexer get 1 (parse-multiline-string) ;
SYNTAX: /* "*/" parse-multiline-string drop ;
SYNTAX: HEREDOC:
- lexer get skip-blank
- rest-of-line
- lexer get next-line
- parse-til-line-begins suffix! ;
+ lexer get {
+ [ skip-blank ]
+ [ rest-of-line ]
+ [ next-line ]
+ [ parse-til-line-begins ]
+ } cleave suffix! ;
SYNTAX: DELIMITED:
- lexer get skip-blank
- rest-of-line
- lexer get next-line
- 0 (parse-multiline-string) suffix! ;
+ lexer get {
+ [ skip-blank ]
+ [ rest-of-line ]
+ [ next-line ]
+ [ 0 (parse-multiline-string) ]
+ } cleave suffix! ;