One file - one class (#24)

src/Fenom/Error/UnexpectedTokenException.php

@@ -0,0 +1,38 @@
+<?php
+/*
+ * This file is part of Fenom.
+ *
+ * (c) 2013 Ivan Shalganov
+ *
+ * For the full copyright and license information, please view the license.md
+ * file that was distributed with this source code.
+ */
+
+namespace Fenom\Error;
+use Fenom\Tokenizer;
+
+/**
+ * Unexpected token
+ */
+class UnexpectedTokenException extends \RuntimeException
+{
+    public function __construct(Tokenizer $tokens, $expect = null, $where = null)
+    {
+        if ($expect && count($expect) == 1 && is_string($expect[0])) {
+            $expect = ", expect '" . $expect[0] . "'";
+        } else {
+            $expect = "";
+        }
+        if (!$tokens->curr) {
+            $this->message = "Unexpected end of " . ($where ? : "expression") . "$expect";
+        } elseif ($tokens->curr[0] === T_WHITESPACE) {
+            $this->message = "Unexpected whitespace$expect";
+        } elseif ($tokens->curr[0] === T_BAD_CHARACTER) {
+            $this->message = "Unexpected bad characters (below ASCII 32 except \\t, \\n and \\r) in " . ($where ? : "expression") . "$expect";
+        } else {
+            $this->message = "Unexpected token '" . $tokens->current() . "' in " . ($where ? : "expression") . "$expect";
+        }
+    }
+}
+
+;