How to type context in the IDE?

Question

I use Closure::call( http://php.net/manual/en/closure.call.php ) to trigger an external closure inside the class context.

Here is simple:

class Foo {
    private $bar = 'baz';

    /**
     * Executes a closure in $this context and returns whatever the closure returns.
     *
     * @param \Closure $closure
     * @return mixed
     */
    public function callClosureInThisContext(\Closure $closure) {
        return $closure->call($this);
    }
}

class Closures {
    /**
     * @return \Closure
     */
    public function getClosureForFoo() : \Closure {
        return function () {
            // how do I tell my IDE that in this context $this is actually class Foo,
            // and not the class Closures?
            print $this->bar;
        };
    }
}

$foo = new Foo();
$closures = new Closures();
$foo->callClosureInThisContext($closures->getClosureForFoo()); // prints "baz"

This works as expected, but my IDE, of course, is not happy and warns me about the "field barnot found":

Is there any way to tell the IDE (in this case PhpStorm) that the closure will be used inside another class and that it should accept its context?

Answer 1

to try

/** @var $this Foo */
print $this->bar;

It will add autocomplete for the Foo class in addition to Closure.

Answer 2

I do not think this can be done using phpdoc.

phpDocumentor, - @ @used-by tag.

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