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Description
Hi, as part of school work I'm using jflex to generate a scanner.
I'm trying to write a regex to handle /* comments */.
This is the error I'm seeing.
gen-scanner:
[java] Reading "src/Scanner/minijava.jflex"
[java]
[java] Unexpected exception encountered. This indicates a bug in JFlex.
[java] Please consider filing an issue at http://github.com/jflex-de/jflex/issues/new
[java]
[java]
[java] Not normalised type = BAR
[java] child 1 :
[java] type = PRIMCLASS
[java] content :
[java] { [10][13] }
[java] child 2 :
[java] type = PRIMCLASS
[java] content :
[java] { [9][' '] }
[java] jflex.exceptions.CharClassException: Not normalised type = BAR
[java] child 1 :
[java] type = PRIMCLASS
[java] content :
[java] { [10][13] }
[java] child 2 :
[java] type = PRIMCLASS
[java] content :
[java] { [9][' '] }
[java] at jflex.core.RegExp.checkPrimClass(RegExp.java:242)
[java] at jflex.core.RegExp.normalise(RegExp.java:323)
[java] at jflex.core.RegExp.normalise(RegExp.java:307)
[java] at jflex.core.RegExp.normalise(RegExp.java:298)
[java] at jflex.core.RegExp.normalise(RegExp.java:298)
[java] at jflex.core.RegExp.normalise(RegExp.java:298)
[java] at jflex.core.RegExps.normalise(RegExps.java:293)
[java] at jflex.core.LexParse$CUP$LexParse$actions.CUP$LexParse$do_action_part00000000(LexParse.java:1029)
[java] at jflex.core.LexParse$CUP$LexParse$actions.CUP$LexParse$do_action(LexParse.java:2257)
[java] at jflex.core.LexParse.do_action(LexParse.java:598)
[java] at java_cup.runtime.lr_parser.parse(lr_parser.java:699)
[java] at jflex.generator.LexGenerator.generate(LexGenerator.java:74)
[java] at jflex.Main.generate(Main.java:320)
[java] at jflex.Main.main(Main.java:336)
BUILD FAILED
/Users/yaoyx/cse/compiler/project/csep501-23au-ao/build.xml:56: Java returned: 1
This is the regex I'm using
eol = [\r\n]
white = {eol}|[ \t]
\/\*[{white}|.]*\*\/ { /* ignore slash-star comments */ }