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@ 2013-01-11T12:09:30Z

<?php

function decorate(callable $fn, callable $decorator)
{
    return function() use ($fn, $decorator) {
    	$d = $decorator();
        $gen = $d();

        if (is_array($gen->current())) {
            $arguments = $gen->current();
        } else {
            $arguments = func_get_args();
        }

        try {
        	$gen->send(call_user_func_array($fn, $arguments));
        } catch (\Exception $e) {
            $gen->throw($e);
        }
    };
}

function foo($bar)
{
    throw new Exception("Error $bar!");
}

function catch_all_exceptions()
{
    return function() {
        try {
            (yield ["bar"]);
        } catch (\Exception $e) {
            echo "Caught Exception: $e\n";
        }
    };
}

$foo = decorate("foo", "catch_all_exceptions");
$foo();

Output for git.master, git.master_jit, rfc.property-hooks: Caught Exception: Exception: Error bar! in /in/MTPo2:25 Stack trace: #0 /in/MTPo2(16): foo('bar') #1 /in/MTPo2(40): {closure}() #2 {main}

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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