X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs-website;a=blobdiff_plain;f=vendor%2Fpsy%2Fpsysh%2Fsrc%2FPsy%2FCodeCleaner%2FFinalClassPass.php;fp=vendor%2Fpsy%2Fpsysh%2Fsrc%2FPsy%2FCodeCleaner%2FFinalClassPass.php;h=57f7ab72d0ed56e27a28208feffe0e8ed22d10c9;hp=0000000000000000000000000000000000000000;hb=a2bd1bf0c2c1f1a17d188f4dc0726a45494cefae;hpb=57c063afa3f66b07c4bbddc2d6129a96d90f0aad

diff --git a/vendor/psy/psysh/src/Psy/CodeCleaner/FinalClassPass.php b/vendor/psy/psysh/src/Psy/CodeCleaner/FinalClassPass.php
new file mode 100644
index 000000000..57f7ab72d
--- /dev/null
+++ b/vendor/psy/psysh/src/Psy/CodeCleaner/FinalClassPass.php
@@ -0,0 +1,70 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Class_ as ClassStmt;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * The final class pass handles final classes.
+ */
+class FinalClassPass extends CodeCleanerPass
+{
+    private $finalClasses;
+
+    /**
+     * @param array $nodes
+     */
+    public function beforeTraverse(array $nodes)
+    {
+        $this->finalClasses = array();
+    }
+
+    /**
+     * @throws RuntimeException if the node is a class that extends a final class
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof ClassStmt) {
+            if ($node->extends) {
+                $extends = (string) $node->extends;
+                if ($this->isFinalClass($extends)) {
+                    $msg = sprintf('Class %s may not inherit from final class (%s)', $node->name, $extends);
+                    throw new FatalErrorException($msg);
+                }
+            }
+
+            if ($node->isFinal()) {
+                $this->finalClasses[strtolower($node->name)] = true;
+            }
+        }
+    }
+
+    /**
+     * @param string $name Class name
+     *
+     * @return bool
+     */
+    private function isFinalClass($name)
+    {
+        if (!class_exists($name)) {
+            return isset($this->finalClasses[strtolower($name)]);
+        }
+
+        $refl = new \ReflectionClass($name);
+
+        return $refl->isFinal();
+    }
+}