hphp/runtime/vm/funcdict.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #ifndef incl_HPHP_VM_FUNC_DICT_H_
  18 #define incl_HPHP_VM_FUNC_DICT_H_
  19
  20 #include "hphp/runtime/vm/func.h"
  21
  22 namespace HPHP {
  23
  24 /*
  25  * Abstraction around the Name -> Function mapping.
  26  */
  27 class RenamedFuncDict {
  28 private:
  29
  30   // Names to Func's.
  31   typedef hphp_hash_map<const StringData*, Func*,
  32           string_data_hash, string_data_isame> FuncMap;
  33
  34   typedef hphp_hash_set<const StringData*, string_data_hash, string_data_isame>
  35           NameSet;
  36
  37   // Some PHP programs opt into restricting the use of function renaming.
  38   bool m_restrictRenameableFunctions;
  39   NameSet m_renameableFunctions;
  40
  41  public:
  42   RenamedFuncDict();
  43
  44   bool rename(const StringData* old, const StringData* n3w);
  45   bool isFunctionRenameable(const StringData* name);
  46   void addRenameableFunctions(ArrayData* arr);
  47 };
  48
  49 } // HPHP::VM
  50
  51 #endif