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<?php |
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/****************************************************************************** |
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* An iterator interface over the Leagues flysystem. |
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* Copyright (c) 2021, 2015 Richard Klees <[email protected]> |
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* |
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* This software is licensed under GPLv3. You should have received |
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* a copy of the along with the code. |
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*/ |
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namespace Lechimp\Flightcontrol; |
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/** |
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* An iterator on a directory. |
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*/ |
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abstract class Iterator |
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{ |
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use FilterTrait; |
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/** |
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* Iterate on the contents of the this iterator. |
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*/ |
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public function iterateOn() : Iterator |
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{ |
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return new SubIterator($this); |
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} |
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/** |
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* Get an iterator for every content in the current iterator |
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* for which the provided predicate returns true. |
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* |
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* @param \Closure $predicate (a -> Bool) |
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*/ |
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abstract public function filter(\Closure $predicate) : Iterator; |
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/** |
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* Map a function over the objects inside the iterator. |
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* |
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* @param \Closure $trans a -> b |
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*/ |
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abstract public function map(\Closure $trans) : Iterator; |
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/** |
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* Define the function to be iterated with and close this level |
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* of iteration. |
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* |
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* @param \Closure $iteration a -> File|Directory -> a |
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* @return Iterator|mixed |
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*/ |
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abstract public function fold($start_value, $iteration); |
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/** |
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* Like fold, but with no start value or return. |
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* |
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* @param \Closure $iteration File|Directory -> () |
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* @return Iterator|mixed |
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*/ |
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public function with($iteration) |
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{ |
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return $this |
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->fold( |
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array(), |
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function ($a, $f) use ($iteration) { |
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$iteration($f); |
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// As the subjacent FDirectory is lazy, we need to evaluate |
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// the contents, as there might be additional computations |
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// hidden. |
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if (!$f->isFile()) { |
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$f->contents(); |
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} |
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$a[] = $f; // Do not disturb the structure of |
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return $a; // the directory tree. |
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} |
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); |
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} |
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/** |
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* Close a level of iteration without an iteration function. |
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* |
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* @return Iterator|mixed |
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*/ |
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public function run() |
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{ |
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$this->with(function ($obj) { |
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}); |
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} |
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} |
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lechimp-p /
flightcontrol
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.