[GROOVY-1419] calls to category methods (written in Groovy) don't recognise default parameters

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0-JSR-6
• Fix Version/s: 1.1-rc-3
• Environment: JRE 1.5.0_07 on Windows XP prof edn
• Assignee: Unassigned
• Reporter: Gavin Grover
• Created: 16/Jul/06 08:26
• Updated: 29/Nov/07 20:17
• Resolved: 27/Nov/07 00:05

Description

When calling a method defined in a category written in Groovy, default parameters aren't recognised. An example...

class ExtendedJoin{
static String join(Collection self, String separator, int perLine, String lineSeparator= '\r\n'){
def buffer= new StringBuffer(), first= true, i=0
if(separator == null) separator= ''
self.each{
if(first) first= false else buffer<< separator
if( i >perLine)

{ buffer<< lineSeparator; i=0 }

buffer<< it
i += it.size()
}
buffer.toString()
}
}

use(ExtendedJoin){
//this one works OK...
println( ['the', 'quick', 'brown', 'fox', 'jumps', 'over', 'the', 'lazy', 'dog'].join(' ',20,'\r\n') )

//but this one doesn't pick up the default param value...
println( ['the', 'quick', 'brown', 'fox', 'jumps', 'over', 'the', 'lazy', 'dog'].join(' ',20) )
//Caught: groovy.lang.MissingMethodException: No signature of method java.util.ArrayList.join()
//is applicable for argument types: (java.lang.String, java.lang.Integer) values:

{" ", 20}

}