PhutilProxyIterator.php
b4f38af38480production

PhutilProxyIterator.php
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			<?php

			abstract class PhutilProxyIterator
			extends Phobject
			implements Iterator {

			private $iterator;
			private $key;
			private $value;
			private $valid;

			public function __construct(Iterator $iterator) {
			$this->iterator = $iterator;
			}

			protected function didReadValue($value) {
			return $value;
			}


			/* -( Iterator Implementation )-------------------------------------------- */


			final public function rewind() {
			$this->iterator->rewind();
			$this->update();
			}

			final public function valid() {
			return $this->valid;
			}

			final public function current() {
			return $this->value;
			}

			final public function key() {
			return $this->key;
			}

			final public function next() {
			$this->iterator->next();
			$this->update();
			}

			private function update() {
			$this->key = $this->iterator->key();
			$this->valid = $this->iterator->valid();

			if ($this->valid) {
			$value = $this->iterator->current();
			$value = $this->didReadValue($value);
			$this->value = $value;
			}
			}

			}