From 51af1642bae5b2c94efb4be4880bc20417aa1ba3 Mon Sep 17 00:00:00 2001
From: Olivier Dolbeau <contact@odolbeau.fr>
Date: Tue, 1 Apr 2014 10:16:08 +0200
Subject: [PATCH] Add a way to override modifiers

---
 lib/Doctrine/Common/Lexer/AbstractLexer.php | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/lib/Doctrine/Common/Lexer/AbstractLexer.php b/lib/Doctrine/Common/Lexer/AbstractLexer.php
index 869b08d..7625d99 100644
--- a/lib/Doctrine/Common/Lexer/AbstractLexer.php
+++ b/lib/Doctrine/Common/Lexer/AbstractLexer.php
@@ -247,8 +247,12 @@ protected function scan($input)
         static $regex;
 
         if ( ! isset($regex)) {
-            $regex = '/(' . implode(')|(', $this->getCatchablePatterns()) . ')|'
-                   . implode('|', $this->getNonCatchablePatterns()) . '/i';
+            $regex = sprintf(
+                '/(%s)|%s/%s',
+                implode(')|(', $this->getCatchablePatterns()),
+                implode('|', $this->getNonCatchablePatterns()),
+                $this->getModifiers()
+            );
         }
 
         $flags = PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_OFFSET_CAPTURE;
@@ -288,6 +292,16 @@ public function getLiteral($token)
         return $token;
     }
 
+    /**
+     * Regex modifiers
+     *
+     * @return string
+     */
+    protected function getModifiers()
+    {
+        return 'i';
+    }
+
     /**
      * Lexical catchable patterns.
      *