Find out a method's name in Groovy

Question

Is there a way in Groovy to find out the name of the called method?

def myMethod() {
    println \"This method is called method \" + methodName
}
         


        

Answer 1

Groovy supports the ability to intercept all methods through the invokeMethod mechanism of GroovyObject.

You can override invokeMethod which will essentially intercept all method calls (to intercept calls to existing methods, the class additionally has to implement the GroovyInterceptable interface).

class MyClass implements GroovyInterceptable {
    def invokeMethod(String name, args) {
        System.out.println("This method is called method $name")
        def metaMethod = metaClass.getMetaMethod(name, args)
        metaMethod.invoke(this, args)
    }

    def myMethod() {
        "Hi!"
    }
}

def instance = new MyClass()
instance.myMethod()

Also, you can add this functionality to an existing class:

Integer.metaClass.invokeMethod = { String name, args ->
    println("This method is called method $name")
    def metaMethod = delegate.metaClass.getMetaMethod(name, args)
    metaMethod.invoke(delegate, args)
}

1.toString()