<?php
/*
* This file is part of PHPUnit.
*
* (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.
*/
namespace PHPUnit\Framework\Constraint;

use PHPUnit\Framework\ExpectationFailedException;

abstract class Composite extends Constraint
{
/**
* @var Constraint
*/
protected $innerConstraint;

/**
* @param Constraint $innerConstraint
*/
public function __construct(Constraint $innerConstraint)
{
parent::__construct();
$this->innerConstraint = $innerConstraint;
}

/**
* Evaluates the constraint for parameter $other
*
* If $returnResult is set to false (the default), an exception is thrown
* in case of a failure. null is returned otherwise.
*
* If $returnResult is true, the result of the evaluation is returned as
* a boolean value instead: true in case of success, false in case of a
* failure.
*
* @param mixed $other Value or object to evaluate.
* @param string $description Additional information about the test
* @param bool $returnResult Whether to return a result or throw an exception
*
* @return mixed
*
* @throws ExpectationFailedException
*/
public function evaluate($other, $description = '', $returnResult = false)
{
try {
return $this->innerConstraint->evaluate(
$other,
$description,
$returnResult
);
} catch (ExpectationFailedException $e) {
$this->fail($other, $description, $e->getComparisonFailure());
}
}

/**
* Counts the number of constraint elements.
*
* @return int
*/
public function count()
{
return \count($this->innerConstraint);
}
}