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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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/*
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 * This file is part of the Symfony package.
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 *
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 * (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\Console\Formatter;
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use Symfony\Component\Console\Exception\InvalidArgumentException;
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use Symfony\Contracts\Service\ResetInterface;
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/**
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 * @author Jean-François Simon <contact@jfsimon.fr>
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 */
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class OutputFormatterStyleStack implements ResetInterface
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{
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    /**
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     * @var OutputFormatterStyleInterface[]
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     */
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    private array $styles = [];
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    private OutputFormatterStyleInterface $emptyStyle;
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    public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
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    {
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        $this->emptyStyle = $emptyStyle ?? new OutputFormatterStyle();
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        $this->reset();
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    }
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    /**
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     * Resets stack (ie. empty internal arrays).
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     */
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    public function reset()
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    {
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        $this->styles = [];
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    }
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    /**
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     * Pushes a style in the stack.
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     */
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    public function push(OutputFormatterStyleInterface $style)
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    {
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        $this->styles[] = $style;
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    }
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    /**
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     * Pops a style from the stack.
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     *
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     * @throws InvalidArgumentException When style tags incorrectly nested
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     */
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    public function pop(OutputFormatterStyleInterface $style = null): OutputFormatterStyleInterface
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    {
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        if (!$this->styles) {
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            return $this->emptyStyle;
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        }
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        if (null === $style) {
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            return array_pop($this->styles);
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        }
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        foreach (array_reverse($this->styles, true) as $index => $stackedStyle) {
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            if ($style->apply('') === $stackedStyle->apply('')) {
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                $this->styles = \array_slice($this->styles, 0, $index);
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                return $stackedStyle;
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            }
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        }
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        throw new InvalidArgumentException('Incorrectly nested style tag found.');
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    }
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    /**
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     * Computes current style with stacks top codes.
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     */
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    public function getCurrent(): OutputFormatterStyleInterface
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    {
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        if (!$this->styles) {
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            return $this->emptyStyle;
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        }
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        return $this->styles[\count($this->styles) - 1];
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    }
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    /**
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     * @return $this
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     */
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    public function setEmptyStyle(OutputFormatterStyleInterface $emptyStyle): static
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    {
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        $this->emptyStyle = $emptyStyle;
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        return $this;
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    }
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    public function getEmptyStyle(): OutputFormatterStyleInterface
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    {
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        return $this->emptyStyle;
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    }
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}