IteratorDecorator.php

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<?php
abstract class IteratorDecorator implements Iterator {
    protected $iterator;
 
    public function __construct( Iterator $iterator ) {
        $this->iterator = $iterator;
    }
 
    public function current() {
        return $this->iterator->current();
    }
 
    public function key() {
        return $this->iterator->key();
    }
 
    public function next() {
        $this->iterator->next();
    }
 
    public function rewind() {
        $this->iterator->rewind();
    }
 
    public function valid() {
        return $this->iterator->valid();
    }
}