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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2015 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 Psy\Reflection\ReflectionConstant;
use Symfony\Component\Console\Input\InputInterface;
/**
* Class Constant Enumerator class.
*/
class ClassConstantEnumerator extends Enumerator
{
/**
* {@inheritdoc}
*/
protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
{
// only list constants when a Reflector is present.
if ($reflector === null) {
return;
}
// We can only list constants on actual class (or object) reflectors.
if (!$reflector instanceof \ReflectionClass) {
// TODO: handle ReflectionExtension as well
return;
}
// only list constants if we are specifically asked
if (!$input->getOption('constants')) {
return;
}
$constants = $this->prepareConstants($this->getConstants($reflector));
if (empty($constants)) {
return;
}
$ret = array();
$ret[$this->getKindLabel($reflector)] = $constants;
return $ret;
}
/**
* Get defined constants for the given class or object Reflector.
*
* @param \Reflector $reflector
*
* @return array
*/
protected function getConstants(\Reflector $reflector)
{
$constants = array();
foreach ($reflector->getConstants() as $name => $constant) {
$constants[$name] = new ReflectionConstant($reflector, $name);
}
// TODO: this should be natcasesort
ksort($constants);
return $constants;
}
/**
* Prepare formatted constant array.
*
* @param array $constants
*
* @return array
*/
protected function prepareConstants(array $constants)
{
// My kingdom for a generator.
$ret = array();
foreach ($constants as $name => $constant) {
if ($this->showItem($name)) {
$ret[$name] = array(
'name' => $name,
'style' => self::IS_CONSTANT,
'value' => $this->presentRef($constant->getValue()),
);
}
}
return $ret;
}
/**
* Get a label for the particular kind of "class" represented.
*
* @param \ReflectionClass $reflector
*
* @return string
*/
protected function getKindLabel(\ReflectionClass $reflector)
{
if ($reflector->isInterface()) {
return 'Interface Constants';
} elseif (method_exists($reflector, 'isTrait') && $reflector->isTrait()) {
return 'Trait Constants';
} else {
return 'Class Constants';
}
}
}