Make routines accept instances that are callable

[augustohp]

As noted on issue #85 I added the possibility of passing callable instances to routines. Let me hear what you people think, please.

[nickl-]

This is awesome definitely a useful addition and arguably incomplete without it.

[nickl-]

Some other peculiarities with Reflection on callbacks

php > $func = function () { return "I'm funky!"; }
php > is_callable($func)
true
php > $func()
"I'm funky!"
php > return var_export($func);
Closure::__set_state(array(
))

php > class INVOK { public function __invoke() { return "Invoke me bebe!"; }}
php > $invok = new INVOK;
php > is_callable($invok)
true
php > $invok()
"Invoke me bebe!"
php > var_export($invok)
INVOK::__set_state(array(
))

php > method_exists($func, '__invoke')
true

php > $rmeth = new ReflectionMethod($func, '__invoke');
php > $rmeth->invoke($func);
"I'm funky!"
php > $rmeth->invoke($func);
null
php > $rmeth->invoke($func);
null

php > $rmeth = new ReflectionMethod(new INVOK, '__invoke');
php > $rmeth->invoke(new INVOK);
"Invoke me bebe!"
php > $rmeth->invoke(new INVOK);
"Invoke me bebe!"
php > $rmeth->invoke(new INVOK);
"Invoke me bebe!"

php > $rfunc = new ReflectionFunction($func);
php > $func->invoke($func);
"I'm funky!"
php > $rfunc->invoke($func);
"I'm funky!"
php > $rfunc->invoke($func);
"I'm funky!"

php > $rfunc = new ReflectionFunction(new INVOK);
php > $rfunc->invoke(new INVOK);
PHP Fatal error:  ReflectionFunction::invoke(): Internal error: 
      Failed to retrieve the reflection object in ... 
null

php > $rfunc = new ReflectionFunction($invok);
Error Type: E_WARNING 
      Message: ReflectionFunction::__construct() expects parameter 1 to be string, object given
ReflectionFunction

php > $rfunc->invoke($invok);
PHP Fatal error:  ReflectionFunction::invoke(): 
      Internal error: Failed to retrieve the reflection object in ...
null

php > new Closure
Error Type: E_RECOVERABLE_ERROR 
      Message: Instantiation of 'Closure' is not allowed
null

php > $rfunc = new ReflectionFunction(new Closure);
Error Type: E_RECOVERABLE_ERROR 
      Message: Instantiation of 'Closure' is not allowed
null

php > $rfunc = new ReflectionFunction(Closure);
Error Type: E_NOTICE 
      Message: Use of undefined constant Closure - assumed 'Closure'
null

php > $rfunc = new ReflectionFunction('Closure');
Uncaught exception: Type: ReflectionException
      Message: Function Closure() does not exist
null

php > $rmeth = new ReflectionMethod(new Closure, '__invoke');
Error Type: E_RECOVERABLE_ERROR 
      Message: Instantiation of 'Closure' is not allowed
ReflectionMethod

php > $rmeth->invoke($func);
"I'm funky!"

[augustohp]

I will make the changes to make it simpler. I went from many iterations and just want to make availiable so the guy with problems could test it.
I will fix up the code and merge it back to master and develop!

[nickl-]

Overall lots of good work, well done! =) 🐼

[nickl-]

@augustohp need a hand with this? Or has it already been committed elsewhere?