[GROOVY-878] Allow Closures to be a switch case by implementing the isCase() method

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0-JSR-1
• Fix Version/s: 1.0-JSR-2
• Assignee: Dierk König
• Reporter: Dierk König
• Created: 12/Jun/05 12:15
• Updated: 12/Jun/05 12:38
• Resolved: 12/Jun/05 12:38

Description

implement isCase() on Closures like
public boolean isCase(Object candidate)

{ return InvokerHelper.asBool(call(candidate)); }

to let Closures play as switch cases like in SwitchTest

void testSwitchWithClosure(){
switch(0){
case

{true}

: break
default: assert false
}
switch(0){
case

{false}

: assert false
}
switch(0){
case

{it == 0}

: break
default: assert false
}
switch(0){
case

{ candidate -> candidate == 0}

: break
default: assert false
}
}

That way, we can switch on logic.