--- /dev/null
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Trait Enumerator class.
+ */
+class TraitEnumerator extends Enumerator
+{
+ /**
+ * {@inheritdoc}
+ */
+ protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+ {
+ // bail early if current PHP doesn't know about traits.
+ if (!function_exists('trait_exists')) {
+ return;
+ }
+
+ // only list traits when no Reflector is present.
+ //
+ // TODO: make a NamespaceReflector and pass that in for commands like:
+ //
+ // ls --traits Foo
+ //
+ // ... for listing traits in the Foo namespace
+
+ if ($reflector !== null || $target !== null) {
+ return;
+ }
+
+ // only list traits if we are specifically asked
+ if (!$input->getOption('traits')) {
+ return;
+ }
+
+ $traits = $this->prepareTraits(get_declared_traits());
+
+ if (empty($traits)) {
+ return;
+ }
+
+ return array(
+ 'Traits' => $traits,
+ );
+ }
+
+ /**
+ * Prepare formatted trait array.
+ *
+ * @param array $traits
+ *
+ * @return array
+ */
+ protected function prepareTraits(array $traits)
+ {
+ natcasesort($traits);
+
+ // My kingdom for a generator.
+ $ret = array();
+
+ foreach ($traits as $name) {
+ if ($this->showItem($name)) {
+ $ret[$name] = array(
+ 'name' => $name,
+ 'style' => self::IS_CLASS,
+ 'value' => $this->presentSignature($name),
+ );
+ }
+ }
+
+ return $ret;
+ }
+}