hphp/hhbbc/array-like-map.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present 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 #pragma once
  17
  18 #include "hphp/util/insertion-ordered-map.h"
  19
  20 #include "hphp/hhbbc/misc.h"
  21 #include "hphp/runtime/base/typed-value.h"
  22
  23 namespace HPHP { namespace HHBBC {
  24
  25 struct Type;
  26
  27 struct ArrayLikeMapHash {
  28   size_t operator()(const TypedValue& c) const { return c.m_data.num; }
  29   size_t operator()(LSString s) const { return (size_t)s.get(); }
  30   size_t operator()(int64_t i) const { return i; }
  31 };
  32
  33 struct ArrayLikeMapEqual {
  34   bool operator()(const TypedValue& c1, const TypedValue& c2) const {
  35     return c1.m_type == c2.m_type && c1.m_data.num == c2.m_data.num;
  36   }
  37   bool operator()(SString s, const TypedValue& c) const {
  38     return isStringType(c.m_type) && c.m_data.pstr == s;
  39   }
  40   bool operator()(int64_t i, const TypedValue& c) const {
  41     return c.m_type == KindOfInt64 && c.m_data.num == i;
  42   }
  43   bool operator()(LSString s1, LSString s2) const {
  44     return s1 == s2;
  45   }
  46   bool operator()(int64_t i1, int64_t i2) const {
  47     return i1 == i2;
  48   }
  49 };
  50
  51 /*
  52  * This is an insertion-order preserving hash map. Its used to emulate
  53  * the behavior of php and hack arrays in hhbbc. Handling of int-like
  54  * string keys must be done by the user.
  55  */
  56 template <class K, class V = Type>
  57 using ArrayLikeMap =
  58   InsertionOrderedMap<K,V,ArrayLikeMapHash, ArrayLikeMapEqual>;
  59
  60 } }
  61