1 files changed, 38 insertions, 0 deletions
diff --git a/Mustache/Exception/UnknownHelperException.php b/Mustache/Exception/UnknownHelperException.php
new file mode 100644
index 00000000..193be782
--- /dev/null
+++ b/Mustache/Exception/UnknownHelperException.php
@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of Mustache.php.
+ *
+ * (c) 2010-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Unknown helper exception.
+ */
+class Mustache_Exception_UnknownHelperException extends InvalidArgumentException implements Mustache_Exception
+{
+    protected $helperName;
+
+    /**
+     * @param string    $helperName
+     * @param Exception $previous
+     */
+    public function __construct($helperName, Exception $previous = null)
+    {
+        $this->helperName = $helperName;
+        $message = sprintf('Unknown helper: %s', $helperName);
+        if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
+            parent::__construct($message, 0, $previous);
+        } else {
+            parent::__construct($message); // @codeCoverageIgnore
+        }
+    }
+
+    public function getHelperName()
+    {
+        return $this->helperName;
+    }
+}