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<?php |
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// +---------------------------------------------------------------------- |
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// | ThinkPHP [ WE CAN DO IT JUST THINK ] |
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// +---------------------------------------------------------------------- |
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// | Copyright (c) 2006~2015 http://thinkphp.cn All rights reserved. |
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// +---------------------------------------------------------------------- |
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) |
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// +---------------------------------------------------------------------- |
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// | Author: yunwuxin <[email protected]> |
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// +---------------------------------------------------------------------- |
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namespace think\console\output\formatter; |
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class Stack |
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{ |
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/** |
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* @var Style[] |
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*/ |
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private $styles; |
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/** |
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* @var Style |
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*/ |
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private $emptyStyle; |
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/** |
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* 构造方法 |
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* @param Style|null $emptyStyle |
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*/ |
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public function __construct(Style $emptyStyle = null) |
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{ |
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$this->emptyStyle = $emptyStyle ?: new Style(); |
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$this->reset(); |
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} |
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/** |
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* 重置堆栈 |
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*/ |
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public function reset(): void |
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{ |
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$this->styles = []; |
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} |
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/** |
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* 推一个样式进入堆栈 |
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* @param Style $style |
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*/ |
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public function push(Style $style): void |
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{ |
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$this->styles[] = $style; |
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} |
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/** |
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* 从堆栈中弹出一个样式 |
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* @param Style|null $style |
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* @return Style |
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* @throws \InvalidArgumentException |
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*/ |
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public function pop(Style $style = null): Style |
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{ |
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if (empty($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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/** |
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* @var int $index |
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* @var Style $stackedStyle |
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*/ |
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foreach (array_reverse($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 $stackedStyle; |
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} |
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} |
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throw new \InvalidArgumentException('Incorrectly nested style tag found.'); |
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} |
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/** |
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* 计算堆栈的当前样式。 |
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* @return Style |
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*/ |
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public function getCurrent(): Style |
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{ |
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if (empty($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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* @param Style $emptyStyle |
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* @return Stack |
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*/ |
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public function setEmptyStyle(Style $emptyStyle) |
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{ |
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$this->emptyStyle = $emptyStyle; |
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return $this; |
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} |
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/** |
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* @return Style |
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*/ |
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public function getEmptyStyle(): Style |
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{ |
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return $this->emptyStyle; |
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} |
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} |
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top-think /
framework
