Change Predis\Commands\Preprocessors to Predis\Command\Processors.

lib/Predis/Commands/Processors/ProcessorChain.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Predis\Commands\Processors;
+
+class ProcessorChain implements ICommandProcessorChain, \ArrayAccess {
+    private $_processors;
+
+    public function __construct($processors = array()) {
+        foreach ($processors as $processor) {
+            $this->add($processor);
+        }
+    }
+
+    public function add(ICommandProcessor $processor) {
+        $this->_processors[] = $processor;
+    }
+
+    public function remove(ICommandProcessor $processor) {
+        $index = array_search($processor, $this->_processors, true);
+        if ($index !== false) {
+            unset($this->_processors);
+        }
+    }
+
+    public function process($method, &$arguments) {
+        $count = count($this->_processors);
+        for ($i = 0; $i < $count; $i++) {
+            $this->_processors[$i]->process($method, $arguments);
+        }
+    }
+
+    public function getProcessors() {
+        return $this->_processors;
+    }
+
+    public function getIterator() {
+        return new \ArrayIterator($this->_processors);
+    }
+
+    public function count() {
+        return count($this->_processors);
+    }
+
+    public function offsetExists($index) {
+        return isset($this->_processors[$index]);
+    }
+
+    public function offsetGet($index) {
+        return $this->_processors[$index];
+    }
+
+    public function offsetSet($index, $processor) {
+        if (!$processor instanceof ICommandProcessor) {
+            throw new \InvalidArgumentException(
+                'A processor chain can hold only instances of classes implementing '.
+                'the Predis\Commands\Preprocessors\ICommandProcessor interface'
+            );
+        }
+        $this->_processors[$index] = $processor;
+    }
+
+    public function offsetUnset($index) {
+        unset($this->_processors[$index]);
+    }
+}