java.lang.StackOverflowError in REPL

[jarandaf]

I definitely wanted to try Ammonite REPL out, it looks really promising. I wanted to play a little bit with Scalaz as well:

@ load.ivy("org.scalaz" %% "scalaz-core" % "7.1.1")
@ import scalaz._
@ import Scalaz._

After that, whatever expression I write, throws a bunch of errors:

java.lang.StackOverflowError
scala.tools.nsc.typechecker.Contexts$Context.collect$1(Contexts.scala:818)
scala.tools.nsc.typechecker.Contexts$Context.collect$1(Contexts.scala:824)
scala.tools.nsc.typechecker.Contexts$Context.collect$1(Contexts.scala:824)
...
Something unexpected went wrong =(

[alexarchambault]

@jarandaf Maybe a more detailed call stack (with the lines in ammonite.... in particular) would be more helpful.

[jarandaf]

That's the only stacktrace I get. The line scala.tools.nsc.typechecker.Contexts$Context.collect$1(Contexts.scala:824) is repeated multiple times.

Is there any "flag" or similar I should start the console with?

[alexarchambault]

It may have been cut at some point then...

[alexarchambault]

Checked on the current master branch, it now gives

@ load.ivy("org.scalaz" %% "scalaz-core" % "7.1.1")
:: resolving dependencies :: org.scalaz#scalaz-core_2.11-caller;working
...
res0: Unit = ()

@ import scalaz._
import scalaz._

@ ()
Compilation Failed
Main.scala:149: invalid escape character
  `\&/$$anonfun$append$1`,
    ^
Main.scala:315: invalid escape character
  `\&/$This$`,
    ^
Main.scala:378: invalid escape character
  `\/$$anonfun$+++$1`,
    ^
Main.scala:394: invalid escape character
  `\&/$$anonfun$bitraverse$5`,
    ^
Main.scala:547: invalid escape character
  `\/$$anonfun$foreach$1`,
    ^
Main.scala:705: invalid escape character
  `\&/$$anonfun$append$4`,
    ^
Main.scala:790: invalid escape character
  `\&/$This`,
    ^
Main.scala:797: invalid escape character
  `\&/$Both$`,
    ^
Main.scala:859: invalid escape character
  `\/$$anonfun$toThese$2`,
    ^
Main.scala:1054: invalid escape character
  `\/$$anonfun$show$1`,
    ^
Main.scala:1277: invalid escape character
  `\&/$$anonfun$foreach$1`,
    ^
Main.scala:1473: invalid escape character
  `\&/$$anonfun$bitraverse$4`,
    ^
Main.scala:1601: invalid escape character
  `\&/$$anonfun$show$3`,
    ^
Main.scala:1710: invalid escape character
  `\&/$$anonfun$show$6`,
    ^
Main.scala:1734: invalid escape character
  `\&/$$anonfun$bifoldMap$1`,
    ^
Main.scala:1803: invalid escape character
  `\&/$$anonfun$append$3`,
    ^
Main.scala:1977: invalid escape character
  `\/$$anonfun$ap$1`,
    ^
Main.scala:1999: invalid escape character
  `\&/$$anonfun$map$1`,
    ^
Main.scala:2151: invalid escape character
  `\&/$$anonfun$append$6`,
    ^
Main.scala:2153: invalid escape character
  `\&/$$anonfun$bitraverse$1`,
    ^
Main.scala:2161: invalid escape character
  `\&/$That$`,
    ^
Main.scala:2413: invalid escape character
  `\/$$anonfun$ap$1$$anonfun$apply$1`,
    ^
Main.scala:2609: invalid escape character
  `\/$$anonfun$traverse$1`,
    ^
Main.scala:2778: invalid escape character
  `\&/$$anonfun$valueOr$1`,
    ^
Main.scala:2826: invalid escape character
  `\&/$$anonfun$traverse$3`,
    ^
Main.scala:3027: invalid escape character
  `\&/$$anonfun$show$5`,
    ^
Main.scala:3264: invalid escape character
  `\&/$$anonfun$bifoldRight$1`,
    ^
Main.scala:3408: invalid escape character
  `\/$$anonfun$toThese$1`,
    ^
Main.scala:3551: invalid escape character
  `\&/$$anonfun$flatMap$2`,
    ^
Main.scala:3607: invalid escape character
  `\&/$$anonfun$&&&$1$$anonfun$apply$1`,
    ^
Main.scala:3701: invalid escape character
  `\&/$$anonfun$bifoldMap$1$$anonfun$apply$2`,
    ^
Main.scala:3880: invalid escape character
  `\&/$$anonfun$show$2`,
    ^
Main.scala:3893: invalid escape character
  `EitherT$Switching_\/$$anonfun$<<?:$1`,
                      ^
Main.scala:3921: invalid escape character
  `\&/$Both`,
    ^
Main.scala:3943: invalid escape character
  `\&/$$anonfun$traverse$2`,
    ^
Main.scala:4170: invalid escape character
  `\&/$$anonfun$bitraverse$3`,
    ^
Main.scala:4253: invalid escape character
  `\&/$$anonfun$append$2`,
    ^
Main.scala:4457: invalid escape character
  `\&/$$anonfun$&&&$1`,
    ^
Main.scala:4795: invalid escape character
  `\&/$$anonfun$flatMap$1`,
    ^
Main.scala:4996: invalid escape character
  `\&/$$anonfun$append$5`,
    ^
Main.scala:5118: invalid escape character
  `\&/$$anonfun$show$1`,
    ^
Main.scala:5162: invalid escape character
  `\/$$anonfun$show$2`,
    ^
Main.scala:5253: invalid escape character
  `\&/$That`,
    ^
Main.scala:5315: invalid escape character
  `\&/$$anonfun$append$8`,
    ^
Main.scala:5379: invalid escape character
  `\/$SwitchingDisjunction`,
    ^
Main.scala:5600: invalid escape character
  `\/$$anonfun$+++$2`,
    ^
Main.scala:5615: invalid escape character
  `\&/$$anonfun$show$4`,
    ^
Main.scala:5789: invalid escape character
  `\&/$$anonfun$leftMap$1`,
    ^
Main.scala:6204: invalid escape character
  `\&/$$anonfun$show$7`,
    ^
Main.scala:6328: invalid escape character
  `\&/$$anonfun$append$7`,
    ^
Main.scala:6363: invalid escape character
  `\&/$$anonfun$traverse$1`,
    ^
Main.scala:6606: invalid escape character
  `\&/$$anonfun$bitraverse$2`,
    ^
Main.scala:882: '}' expected but identifier found.
  \&/$,
     ^

@

(stripped/reformatted for readability)

The errors of the last command then seem to occur at each line one enters after the import scalaz._.

[lihaoyi]

This should work now

https://github.com/lihaoyi/Ammonite/blob/master/repl/src/test/scala/ammonite/repl/AdvancedTests.scala#L195-L208

[jarandaf]

Cool! Thank you.