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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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namespace Illuminate\View\Concerns;
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use Illuminate\Support\Arr;
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use Illuminate\Support\LazyCollection;
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trait ManagesLoops
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{
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    /**
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     * The stack of in-progress loops.
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     *
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     * @var array
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     */
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    protected $loopsStack = [];
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    /**
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     * Add new loop to the stack.
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     *
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     * @param  \Countable|array  $data
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     * @return void
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     */
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    public function addLoop($data)
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    {
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        $length = is_countable($data) && ! $data instanceof LazyCollection
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                            ? count($data)
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                            : null;
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        $parent = Arr::last($this->loopsStack);
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        $this->loopsStack[] = [
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            'iteration' => 0,
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            'index' => 0,
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            'remaining' => $length ?? null,
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            'count' => $length,
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            'first' => true,
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            'last' => isset($length) ? $length == 1 : null,
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            'odd' => false,
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            'even' => true,
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            'depth' => count($this->loopsStack) + 1,
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            'parent' => $parent ? (object) $parent : null,
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        ];
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    }
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    /**
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     * Increment the top loop's indices.
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     *
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     * @return void
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     */
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    public function incrementLoopIndices()
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    {
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        $loop = $this->loopsStack[$index = count($this->loopsStack) - 1];
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        $this->loopsStack[$index] = array_merge($this->loopsStack[$index], [
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            'iteration' => $loop['iteration'] + 1,
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            'index' => $loop['iteration'],
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            'first' => $loop['iteration'] == 0,
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            'odd' => ! $loop['odd'],
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            'even' => ! $loop['even'],
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            'remaining' => isset($loop['count']) ? $loop['remaining'] - 1 : null,
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            'last' => isset($loop['count']) ? $loop['iteration'] == $loop['count'] - 1 : null,
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        ]);
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    }
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    /**
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     * Pop a loop from the top of the loop stack.
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     *
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     * @return void
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     */
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    public function popLoop()
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    {
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        array_pop($this->loopsStack);
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    }
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    /**
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     * Get an instance of the last loop in the stack.
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     *
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     * @return \stdClass|null
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     */
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    public function getLastLoop()
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    {
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        if ($last = Arr::last($this->loopsStack)) {
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            return (object) $last;
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        }
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    }
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    /**
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     * Get the entire loop stack.
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     *
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     * @return array
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     */
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    public function getLoopStack()
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    {
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        return $this->loopsStack;
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    }
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}