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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\Formatter\SignatureFormatter;
use Psy\Util\Mirror;
use Psy\VarDumper\Presenter;
use Symfony\Component\Console\Input\InputInterface;
/**
* Abstract Enumerator class.
*/
abstract class Enumerator
{
// Output styles
const IS_PUBLIC = 'public';
const IS_PROTECTED = 'protected';
const IS_PRIVATE = 'private';
const IS_GLOBAL = 'global';
const IS_CONSTANT = 'const';
const IS_CLASS = 'class';
const IS_FUNCTION = 'function';
private $presenter;
private $filter = false;
private $invertFilter = false;
private $pattern;
/**
* Enumerator constructor.
*
* @param Presenter $presenter
*/
public function __construct(Presenter $presenter)
{
$this->presenter = $presenter;
}
/**
* Return a list of categorized things with the given input options and target.
*
* @param InputInterface $input
* @param Reflector $reflector
* @param mixed $target
*
* @return array
*/
public function enumerate(InputInterface $input, \Reflector $reflector = null, $target = null)
{
$this->setFilter($input);
return $this->listItems($input, $reflector, $target);
}
/**
* Enumerate specific items with the given input options and target.
*
* Implementing classes should return an array of arrays:
*
* [
* 'Constants' => [
* 'FOO' => [
* 'name' => 'FOO',
* 'style' => 'public',
* 'value' => '123',
* ],
* ],
* ]
*
* @param InputInterface $input
* @param Reflector $reflector
* @param mixed $target
*
* @return array
*/
abstract protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null);
protected function presentRef($value)
{
return $this->presenter->presentRef($value);
}
protected function showItem($name)
{
return $this->filter === false || (preg_match($this->pattern, $name) xor $this->invertFilter);
}
private function setFilter(InputInterface $input)
{
if ($pattern = $input->getOption('grep')) {
if (substr($pattern, 0, 1) !== '/' || substr($pattern, -1) !== '/' || strlen($pattern) < 3) {
$pattern = '/' . preg_quote($pattern, '/') . '/';
}
if ($input->getOption('insensitive')) {
$pattern .= 'i';
}
$this->validateRegex($pattern);
$this->filter = true;
$this->pattern = $pattern;
$this->invertFilter = $input->getOption('invert');
} else {
$this->filter = false;
}
}
/**
* Validate that $pattern is a valid regular expression.
*
* @param string $pattern
*
* @return bool
*/
private function validateRegex($pattern)
{
set_error_handler(array('Psy\Exception\ErrorException', 'throwException'));
try {
preg_match($pattern, '');
} catch (ErrorException $e) {
throw new RuntimeException(str_replace('preg_match(): ', 'Invalid regular expression: ', $e->getRawMessage()));
}
restore_error_handler();
}
protected function presentSignature($target)
{
// This might get weird if the signature is actually for a reflector. Hrm.
if (!$target instanceof \Reflector) {
$target = Mirror::get($target);
}
return SignatureFormatter::format($target);
}
}