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getClass.getName doesn't return a real java.lang.String with correct replace and replaceAll behaviour #4884

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scabug opened this Issue Aug 7, 2011 · 6 comments

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scabug commented Aug 7, 2011

getClass.getName doesn't return a real java.lang.String because replace and replaceAll don't work properly

scala> class A {
     |  val b = new B
     |  class B {
     |  val c = new C
     |  class C {
     |  }
     |  }
     |  }
defined class A

scala> val a = new A
a: A = A@19e0bcf

scala> val c = a.b.c
c: a.b.C = A$B$C@90dbc4

scala> c.getClass.getName.replace("$","#")
res60: java.lang.String = #line92.#read##iw##iw#A#B#C

scala> c.getClass.getName.replaceAll("[$]","#")
res61: java.lang.String = #line92.#read##iw##iw#A#B#C

Expected behaviour:

scala> "A$B$C".replace("$","#")
res0: java.lang.String = A#B#C

scala> "A$B$C".replaceAll("[$]","#")
res1: java.lang.String = A#B#C
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scabug commented Aug 7, 2011

Imported From: https://issues.scala-lang.org/browse/SI-4884?orig=1
Reporter: DaveScala (davescala)
Affected Versions: 2.9.0-1
Attachments:

  • name.scala (created on Aug 7, 2011 12:59:35 PM UTC, 564 bytes)
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scabug commented Aug 7, 2011

DaveScala (davescala) said:
{{{
scala> class A {
| val b = new B
| class B {
| val c = new C
| class C {
| }
| }
| }
defined class A
}}}

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scabug commented Aug 7, 2011

@soc said (edited on Aug 7, 2011 12:02:47 PM UTC):
This has to do with the name mangling of the REPL.

Could you make your bug report actually readable? I think the tables and the other stuff are not intended ...

Can you verify it when compiling?

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scabug commented Aug 7, 2011

DaveScala (davescala) said:
The table formatting does Jira. What is the preformatted code? Prbably the vertical bars from the REPL causes Jira making a table

I compiled it and then it works, but still it is not good that REPL does something different.

C:\scala-2.9.1.RC1\examples\name>scala Main
c.getClass: class A$B$C
c.getClass.getName: A$B$C
c.toString: A$B$C@1bfa475
c.isInstanceOf[A#B#C]: true
c.getClass.getName.replace("$","#"): A#B#C
c.getClass.getName.replaceAll("[$]","#"): A#B#C

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scabug commented Aug 7, 2011

DaveScala (davescala) said (edited on Aug 7, 2011 1:00:59 PM UTC):
File name.scala is attached

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scabug commented Aug 7, 2011

@paulp said:
The repl is not, and cannot be, an environment with perfect fidelity to compiler semantics.

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