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<?php declare(strict_types=1);
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/*
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 * This file is part of PHPUnit.
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 *
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 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace PHPUnit\Framework\Constraint;
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/**
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 * @psalm-template CallbackInput of mixed
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 *
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 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
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 */
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final class Callback extends Constraint
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{
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    /**
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     * @var callable
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     *
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     * @psalm-var callable(CallbackInput $input): bool
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     */
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    private $callback;
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    /** @psalm-param callable(CallbackInput $input): bool $callback */
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    public function __construct(callable $callback)
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    {
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        $this->callback = $callback;
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    }
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    /**
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     * Returns a string representation of the constraint.
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     */
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    public function toString(): string
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    {
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        return 'is accepted by specified callback';
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    }
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    /**
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     * Evaluates the constraint for parameter $value. Returns true if the
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     * constraint is met, false otherwise.
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     *
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     * @param mixed $other value or object to evaluate
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     *
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     * @psalm-param CallbackInput $other
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     */
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    protected function matches($other): bool
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    {
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        return ($this->callback)($other);
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    }
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}