Promises::promisor() - Code Metrics - Inspection of "update readme.md" - cubiche/async - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b72795...847518 )

by Ivannis Suárez

created 2016-05-01 17:48 UTC

Promises::promisor() A

↳ Parent: Promises

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	4
rs	10
cc	1
eloc	2
nc	1
nop	1

<?php

/*
 * This file is part of the Cubiche package.
 *
 * Copyright (c) Cubiche
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Cubiche\Core\Async\Promise;

use Cubiche\Core\Async\Loop\LoopInterface;

/**
 * Promises class.
 *
 * @author Karel Osorio Ramírez <[email protected]>
 */
class Promises
{
    /**
     * @return \Cubiche\Core\Async\Promise\DeferredInterface
     */
    public static function defer()
    {
        return new Deferred();
    }

    /**
     * @param mixed $value
     *
     * @return \Cubiche\Core\Async\Promise\PromiseInterface
     */
    public static function fulfilled($value = null)
    {
        return new FulfilledPromise($value);
    }

    /**
     * @param mixed $reason
     *
     * @return \Cubiche\Core\Async\Promise\PromiseInterface
     */
    public static function rejected($reason = null)
    {
        return new RejectedPromise($reason);
    }

    /**
     * @param PromiseInterface[] $promises
     *
     * @return \Cubiche\Core\Async\Promise\PromiseInterface
     */
    public static function all($promises)
    {
        return self::map($promises);
    }

    /**
     * @param PromiseInterface[] $promises
     * @param callable           $map
     *
     * @return \Cubiche\Core\Async\Promise\PromiseInterface
     */
    public static function map($promises, callable $map = null)
    {
        $pending = \count($promises);
        if ($pending == 0) {
            return self::fulfilled(array());
        }

        $deferred = self::defer();
        $results = array();

        /*
         * @var \Cubiche\Core\Async\Promise\PromiseInterface
         */
        foreach ($promises as $key => $promise) {
            $promise->then(
                function ($value) use ($deferred, &$results, $map, $key, &$pending) {
                    if ($map !== null) {
                        $value = $map($value);
                    }
                    $results[$key] = $value;

                    if (--$pending == 0) {
                        $deferred->resolve($results);
                    }
                },
                function ($reason) use ($deferred) {
                    $deferred->reject($reason);
                }
            );
        }

        return $deferred->promise();
    }

    /**
     * @param PromiseInterface $promise
     * @param int|float        $time
     * @param LoopInterface    $loop
     *
     * @return \Cubiche\Core\Async\Promise\PromiseInterface
     */
    public static function timeout(PromiseInterface $promise, $time, LoopInterface $loop)
    {
        $deferred = self::defer();
        $timer = $loop->timeout(
            function () use ($promise, $deferred, $time) {
                $deferred->reject(new TimeoutException($time));
            },
            $time
        );

        $promise->then(
            function ($value = null) use ($deferred, $timer) {
                $timer->cancel();
                $deferred->resolve($value);
            },
            function ($reason = null) use ($deferred, $timer) {
                $timer->cancel();
                $deferred->reject($reason);
            }
        );

        return $deferred->promise();
    }

    /**
     * @param PromiseInterface $promise
     * @param LoopInterface    $loop
     * @param int|float        $timeout
     *
     * @throws RejectionException
     *
     * @return mixed
     */
    public static function get(PromiseInterface $promise, LoopInterface $loop, $timeout = null)
    {
        $result = null;
        $rejectionReason = null;
        if ($timeout !== null) {
            $promise = self::timeout($promise, $timeout, $loop);
        }

        $promise->then(
            function ($value = null) use (&$result) {
                $result = $value;
            },
            function ($reason = null) use (&$rejectionReason) {
                $rejectionReason = $reason;
            }
        )->always(
            function () use ($loop) {
                $loop->stop();
            }
        );

        while ($promise->state()->equals(State::PENDING())) {
            $loop->run();
        }

        if ($promise->state()->equals(State::FULFILLED())) {
            return $result;
        }

        throw new RejectionException($rejectionReason);
    }

    /**
     * @param ThenableInterface $thenable
     *
     * @return \Cubiche\Core\Async\Promise\PromisorInterface
     */
    public static function promisor(ThenableInterface $thenable)
    {
        return new ThenablePromisor($thenable);
    }
}


1			<?php
2
3			/*
4			* This file is part of the Cubiche package.
5			*
6			* Copyright (c) Cubiche
7			*
8			* For the full copyright and license information, please view the LICENSE
9			* file that was distributed with this source code.
10			*/
11
12			namespace Cubiche\Core\Async\Promise;
13
14			use Cubiche\Core\Async\Loop\LoopInterface;
15
16			/**
17			* Promises class.
18			*
19			* @author Karel Osorio Ramírez <[email protected]>
20			*/
21			class Promises
22			{
23			/**
24			* @return \Cubiche\Core\Async\Promise\DeferredInterface
25			*/
26			public static function defer()
27			{
28			return new Deferred();
29			}
30
31			/**
32			* @param mixed $value
33			*
34			* @return \Cubiche\Core\Async\Promise\PromiseInterface
35			*/
36			public static function fulfilled($value = null)
37			{
38			return new FulfilledPromise($value);
39			}
40
41			/**
42			* @param mixed $reason
43			*
44			* @return \Cubiche\Core\Async\Promise\PromiseInterface
45			*/
46			public static function rejected($reason = null)
47			{
48			return new RejectedPromise($reason);
49			}
50
51			/**
52			* @param PromiseInterface[] $promises
53			*
54			* @return \Cubiche\Core\Async\Promise\PromiseInterface
55			*/
56			public static function all($promises)
57			{
58			return self::map($promises);
59			}
60
61			/**
62			* @param PromiseInterface[] $promises
63			* @param callable $map
64			*
65			* @return \Cubiche\Core\Async\Promise\PromiseInterface
66			*/
67			public static function map($promises, callable $map = null)
68			{
69			$pending = \count($promises);
70			if ($pending == 0) {
71			return self::fulfilled(array());
72			}
73
74			$deferred = self::defer();
75			$results = array();
76
77			/*
78			* @var \Cubiche\Core\Async\Promise\PromiseInterface
79			*/
80			foreach ($promises as $key => $promise) {
81			$promise->then(
82			function ($value) use ($deferred, &$results, $map, $key, &$pending) {
83			if ($map !== null) {
84			$value = $map($value);
85			}
86			$results[$key] = $value;
87
88			if (--$pending == 0) {
89			$deferred->resolve($results);
90			}
91			},
92			function ($reason) use ($deferred) {
93			$deferred->reject($reason);
94			}
95			);
96			}
97
98			return $deferred->promise();
99			}
100
101			/**
102			* @param PromiseInterface $promise
103			* @param int\|float $time
104			* @param LoopInterface $loop
105			*
106			* @return \Cubiche\Core\Async\Promise\PromiseInterface
107			*/
108			public static function timeout(PromiseInterface $promise, $time, LoopInterface $loop)
109			{
110			$deferred = self::defer();
111			$timer = $loop->timeout(
112			function () use ($promise, $deferred, $time) {
113			$deferred->reject(new TimeoutException($time));
114			},
115			$time
116			);
117
118			$promise->then(
119			function ($value = null) use ($deferred, $timer) {
120			$timer->cancel();
121			$deferred->resolve($value);
122			},
123			function ($reason = null) use ($deferred, $timer) {
124			$timer->cancel();
125			$deferred->reject($reason);
126			}
127			);
128
129			return $deferred->promise();
130			}
131
132			/**
133			* @param PromiseInterface $promise
134			* @param LoopInterface $loop
135			* @param int\|float $timeout
136			*
137			* @throws RejectionException
138			*
139			* @return mixed
140			*/
141			public static function get(PromiseInterface $promise, LoopInterface $loop, $timeout = null)
142			{
143			$result = null;
144			$rejectionReason = null;
145			if ($timeout !== null) {
146			$promise = self::timeout($promise, $timeout, $loop);
147			}
148
149			$promise->then(
150			function ($value = null) use (&$result) {
151			$result = $value;
152			},
153			function ($reason = null) use (&$rejectionReason) {
154			$rejectionReason = $reason;
155			}
156			)->always(
157			function () use ($loop) {
158			$loop->stop();
159			}
160			);
161
162			while ($promise->state()->equals(State::PENDING())) {
163			$loop->run();
164			}
165
166			if ($promise->state()->equals(State::FULFILLED())) {
167			return $result;
168			}
169
170			throw new RejectionException($rejectionReason);
171			}
172
173			/**
174			* @param ThenableInterface $thenable
175			*
176			* @return \Cubiche\Core\Async\Promise\PromisorInterface
177			*/
178			public static function promisor(ThenableInterface $thenable)
179			{
180			return new ThenablePromisor($thenable);
181			}
182			}
183

cubiche / async

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Promises::promisor() A

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