! 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 kernel lexer make math namespaces parser
+quotations sequences strings.parser.private words ;
IN: multiline
-ERROR: bad-heredoc identifier ;
-
<PRIVATE
-: next-line-text ( -- str )
- lexer get dup next-line line-text>> ;
-: (parse-here) ( -- )
- next-line-text [
+: rest-of-line ( lexer -- seq )
+ [ line-text>> ] [ column>> ] bi tail ;
+
+: next-line-text ( lexer -- str ? )
+ [ next-line ] [ line-text>> ] [ still-parsing? ] tri ;
+
+: (parse-here) ( lexer -- )
+ dup next-line-text [
dup ";" =
- [ drop lexer get next-line ]
- [ % "\n" % (parse-here) ] if
- ] [ ";" unexpected-eof ] if* ;
+ [ drop next-line ]
+ [ % CHAR: \n , (parse-here) ] if
+ ] [ ";" throw-unexpected-eof ] if ;
+
PRIVATE>
+ERROR: text-found-before-eol string ;
+
: parse-here ( -- str )
- [ (parse-here) ] "" make but-last
- lexer get next-line ;
+ [
+ lexer get
+ dup rest-of-line [ text-found-before-eol ] unless-empty
+ (parse-here)
+ ] "" make but-last ;
SYNTAX: STRING:
- CREATE-WORD
+ scan-new-word
parse-here 1quotation
- (( -- string )) define-inline ;
+ ( -- string ) define-inline ;
<PRIVATE
-:: (scan-multiline-string) ( i end -- j )
- lexer get line-text>> :> text
- text [
- end text i start* [| j |
+:: (scan-multiline-string) ( i end lexer -- j )
+ lexer line-text>> :> text
+ lexer still-parsing? [
+ i text end subseq-index-from [| j |
i j text subseq % j end length +
] [
- text i short tail % CHAR: \n ,
- lexer get next-line
- 0 end (scan-multiline-string)
+ text i index-or-length tail % CHAR: \n ,
+ lexer next-line
+ 0 end lexer (scan-multiline-string)
] if*
- ] [ end unexpected-eof ] if ;
-
-:: (parse-multiline-string) ( end-text skip-n-chars -- str )
+ ] [ end throw-unexpected-eof ] if ;
+
+:: (parse-multiline-string) ( end-text lexer skip-n-chars -- str )
[
- lexer get
- [ skip-n-chars + end-text (scan-multiline-string) ]
- change-column drop
+ lexer
+ [ skip-n-chars + end-text lexer (scan-multiline-string) ]
+ change-column check-space
] "" make ;
-: rest-of-line ( -- seq )
- lexer get [ line-text>> ] [ column>> ] bi tail ;
-
-:: advance-same-line ( text -- )
- lexer get [ text length + ] 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
- ] [
- lexer get line-text>> % "\n" %
- lexer get next-line
- begin-text (parse-til-line-begins)
- ] if
- ] [
- begin-text bad-heredoc
- ] if ;
-
-: parse-til-line-begins ( begin-text -- seq )
- [ (parse-til-line-begins) ] "" make ;
+: advance-same-line ( lexer text -- )
+ length [ + ] curry change-column drop ;
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 parsed ;
-
-SYNTAX: DELIMITED:
- lexer get skip-blank
- rest-of-line
- lexer get next-line
- 0 (parse-multiline-string) parsed ;
+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 ;