groovyConsole -- doesn't it support commas in for loops?

[marko]

Is anyone doing much groovy with groovyConsole? I've noticed that if I make a for look with commas groovy won't accept it in the GUI console:

    int b = 4
    for (int a = 0; a < b; a++,b--) {
        //b--
        println "a: " + a + " b: " + b
    }
 
1 compilation error:
expecting ")" found ","  ....

then if I remove the ", b--" and comment back in the "// b-- " it works fine

a: 0 b: 3
a: 1 b: 2

But commas in the for statement are valid Java. This is with Groovy version 1.8.6 on Oracle JDK 1.6.0_31 64bit on Fedora 16. Is this a limitation in the groovyConsole?

[RupertPupkin]

It might be a groovyConsole problem. It works fine for me in BeanShell:

[marko]

Originally Posted by RupertPupkin

It might be a groovyConsole problem. It works fine for me in BeanShell:

But you're using BeanShell script language (is just the same as Java?) there and not groovy....

[RupertPupkin]

BeanShell and Groovy are similar in that they are both Java-based scripting languages that have their own syntax but accept pure Java code. So if you just need the Java aspect then you could use BeanShell instead of Groovy, since Groovy's Java interpreter seems to be broken. I've never had any problem using pure Java in BeanShell. which is why I use it all the time for quick testing.

[RupertPupkin]

Hmm, looks like this is broken not just in groovyConsole but in Groovy itself:

$ groovy -v
Groovy Version: 1.8.6 JVM: 1.7.0_03 Vendor: Oracle Corporation OS: Linux
$ cat forloop.groovy
int b = 4
for (int a = 0; a < b; a++,b--) {
    println "a: " + a + " b: " + b
}
$ groovy forloop.groovy
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
/home/code/groovy/forloop.groovy: 2: expecting ')', found ',' @ line 2, column 27.
   for (int a = 0; a < b; a++,b--) {
                             ^

1 error

Someone should file a bug to fix Groovy's Java support!