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Editing: Static.php

<?php
/*
 * This file is part of the PHPUnit_MockObject package.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use SebastianBergmann\Exporter\Exporter;

/**
 * Represents a static invocation.
 *
 * @since Class available since Release 1.0.0
 */
class PHPUnit_Framework_MockObject_Invocation_Static implements PHPUnit_Framework_MockObject_Invocation, PHPUnit_Framework_SelfDescribing
{
    /**
     * @var array
     */
    protected static $uncloneableExtensions = [
        'mysqli'    => true,
        'SQLite'    => true,
        'sqlite3'   => true,
        'tidy'      => true,
        'xmlwriter' => true,
        'xsl'       => true
    ];

/**
     * @var array
     */
    protected static $uncloneableClasses = [
        'Closure',
        'COMPersistHelper',
        'IteratorIterator',
        'RecursiveIteratorIterator',
        'SplFileObject',
        'PDORow',
        'ZipArchive'
    ];

/**
     * @var string
     */
    public $className;

/**
     * @var string
     */
    public $methodName;

/**
     * @var array
     */
    public $parameters;

/**
     * @var string
     */
    public $returnType;

/**
     * @var bool
     */
    public $returnTypeNullable = false;

/**
     * @param string $className
     * @param string $methodName
     * @param array  $parameters
     * @param string $returnType
     * @param bool   $cloneObjects
     */
    public function __construct($className, $methodName, array $parameters, $returnType, $cloneObjects = false)
    {
        $this->className  = $className;
        $this->methodName = $methodName;
        $this->parameters = $parameters;

if (strpos($returnType, '?') === 0) {
            $returnType               = substr($returnType, 1);
            $this->returnTypeNullable = true;
        }

$this->returnType = $returnType;

if (!$cloneObjects) {
            return;
        }

foreach ($this->parameters as $key => $value) {
            if (is_object($value)) {
                $this->parameters[$key] = $this->cloneObject($value);
            }
        }
    }

/**
     * @return string
     */
    public function toString()
    {
        $exporter = new Exporter;

return sprintf(
            '%s::%s(%s)%s',
            $this->className,
            $this->methodName,
            implode(
                ', ',
                array_map(
                    [$exporter, 'shortenedExport'],
                    $this->parameters
                )
            ),
            $this->returnType ? sprintf(': %s', $this->returnType) : ''
        );
    }

/**
     * @return mixed Mocked return value.
     */
    public function generateReturnValue()
    {
        switch ($this->returnType) {
            case '':       return;
            case 'string': return $this->returnTypeNullable ? null : '';
            case 'float':  return $this->returnTypeNullable ? null : 0.0;
            case 'int':    return $this->returnTypeNullable ? null : 0;
            case 'bool':   return $this->returnTypeNullable ? null : false;
            case 'array':  return $this->returnTypeNullable ? null : [];
            case 'void':   return;

case 'callable':
            case 'Closure':
                return function () {};

case 'Traversable':
            case 'Generator':
                $generator = function () { yield; };

return $generator();

default:
                if ($this->returnTypeNullable) {
                    return null;
                }

$generator = new PHPUnit_Framework_MockObject_Generator;

return $generator->getMock($this->returnType, [], [], '', false);
        }
    }

/**
     * @param object $original
     *
     * @return object
     */
    protected function cloneObject($original)
    {
        $cloneable = null;
        $object    = new ReflectionObject($original);

// Check the blacklist before asking PHP reflection to work around
        // https://bugs.php.net/bug.php?id=53967
        if ($object->isInternal() &&
            isset(self::$uncloneableExtensions[$object->getExtensionName()])) {
            $cloneable = false;
        }

if ($cloneable === null) {
            foreach (self::$uncloneableClasses as $class) {
                if ($original instanceof $class) {
                    $cloneable = false;
                    break;
                }
            }
        }

if ($cloneable === null && method_exists($object, 'isCloneable')) {
            $cloneable = $object->isCloneable();
        }

if ($cloneable === null && $object->hasMethod('__clone')) {
            $method    = $object->getMethod('__clone');
            $cloneable = $method->isPublic();
        }

if ($cloneable === null) {
            $cloneable = true;
        }

if ($cloneable) {
            try {
                return clone $original;
            } catch (Exception $e) {
                return $original;
            }
        } else {
            return $original;
        }
    }
}

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