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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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namespace Hamcrest\Core;
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/*
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 Copyright (c) 2009 hamcrest.org
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 */
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use Hamcrest\Description;
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use Hamcrest\DiagnosingMatcher;
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/**
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 * Tests whether the value is an instance of a class.
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 */
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class IsInstanceOf extends DiagnosingMatcher
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{
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    private $_theClass;
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    /**
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     * Creates a new instance of IsInstanceOf
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     *
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     * @param string $theClass
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     *   The predicate evaluates to true for instances of this class
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     *   or one of its subclasses.
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     */
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    public function __construct($theClass)
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    {
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        $this->_theClass = $theClass;
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    }
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    protected function matchesWithDiagnosticDescription($item, Description $mismatchDescription)
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    {
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        if (!is_object($item)) {
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            $mismatchDescription->appendText('was ')->appendValue($item);
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            return false;
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        }
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        if (!($item instanceof $this->_theClass)) {
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            $mismatchDescription->appendText('[' . get_class($item) . '] ')
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                                                    ->appendValue($item);
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            return false;
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        }
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        return true;
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    }
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    public function describeTo(Description $description)
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    {
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        $description->appendText('an instance of ')
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                                ->appendText($this->_theClass)
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                                ;
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    }
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    /**
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     * Is the value an instance of a particular type?
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     * This version assumes no relationship between the required type and
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     * the signature of the method that sets it up, for example in
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     * <code>assertThat($anObject, anInstanceOf('Thing'));</code>
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     *
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     * @factory any
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     */
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    public static function anInstanceOf($theClass)
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    {
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        return new self($theClass);
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    }
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}