Differential D15491 Diff 37343 src/utils/PhutilProxyIterator.php

Changeset View

Standalone View

				<?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;
				}
				}

				}