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phpMyAdmin/vendor/symfony/expression-language/Node/UnaryNode.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ExpressionLanguage\Node;
+
+use Symfony\Component\ExpressionLanguage\Compiler;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @internal
+ */
+class UnaryNode extends Node
+{
+    private static $operators = array(
+        '!' => '!',
+        'not' => '!',
+        '+' => '+',
+        '-' => '-',
+    );
+
+    public function __construct($operator, Node $node)
+    {
+        parent::__construct(
+            array('node' => $node),
+            array('operator' => $operator)
+        );
+    }
+
+    public function compile(Compiler $compiler)
+    {
+        $compiler
+            ->raw('(')
+            ->raw(self::$operators[$this->attributes['operator']])
+            ->compile($this->nodes['node'])
+            ->raw(')')
+        ;
+    }
+
+    public function evaluate($functions, $values)
+    {
+        $value = $this->nodes['node']->evaluate($functions, $values);
+        switch ($this->attributes['operator']) {
+            case 'not':
+            case '!':
+                return !$value;
+            case '-':
+                return -$value;
+        }
+
+        return $value;
+    }
+}