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