Файл: gapps/vendor/psy/psysh/src/Psy/CodeCleaner/StrictTypesPass.php
Строк: 64
<?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 PsyCodeCleaner;
use PhpParserNodeScalarLNumber;
use PhpParserNodeStmtDeclare_ as DeclareStmt;
use PhpParserNodeStmtDeclareDeclare;
use PsyExceptionFatalErrorException;
/**
* Provide implicit strict types declarations for for subsequent execution.
*
* The strict types pass remembers the last strict types declaration:
*
* declare(strict_types=1);
*
* ... which it then applies implicitly to all future evaluated code, until it
* is replaced by a new declaration.
*/
class StrictTypesPass extends CodeCleanerPass
{
private $strictTypes = false;
/**
* If this is a standalone strict types declaration, remember it for later.
*
* Otherwise, apply remembered strict types declaration to to the code until
* a new declaration is encountered.
*
* @throws FatalErrorException if an invalid `strict_types` declaration is found.
*
* @param array $nodes
*/
public function beforeTraverse(array $nodes)
{
if (version_compare(PHP_VERSION, '7.0', '<')) {
return;
}
$prependStrictTypes = $this->strictTypes;
foreach ($nodes as $key => $node) {
if ($node instanceof DeclareStmt) {
foreach ($node->declares as $declare) {
if ($declare->key === 'strict_types') {
$value = $declare->value;
if (!$value instanceof LNumber || ($value->value !== 0 && $value->value !== 1)) {
throw new FatalErrorException('strict_types declaration must have 0 or 1 as its value');
}
$this->strictTypes = $value->value === 1;
}
}
}
}
if ($prependStrictTypes) {
$first = reset($nodes);
if (!$first instanceof DeclareStmt) {
$declare = new DeclareStmt(array(new DeclareDeclare('strict_types', new LNumber(1))));
array_unshift($nodes, $declare);
}
}
return $nodes;
}
}