hphp/compiler/expression/dynamic_variable.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
  17 #ifndef incl_HPHP_DYNAMIC_VARIABLE_H_
  18 #define incl_HPHP_DYNAMIC_VARIABLE_H_
  19
  20 #include "hphp/compiler/expression/expression.h"
  21
  22 namespace HPHP {
  23 ///////////////////////////////////////////////////////////////////////////////
  24
  25 DECLARE_BOOST_TYPES(DynamicVariable);
  26
  27 struct DynamicVariable : Expression {
  28   DynamicVariable(EXPRESSION_CONSTRUCTOR_PARAMETERS, ExpressionPtr exp);
  29
  30   DECLARE_EXPRESSION_VIRTUAL_FUNCTIONS;
  31   int getLocalEffects() const override { return NoEffect; }
  32   bool isRefable(bool checkError = false) const override { return true;}
  33
  34   ExpressionPtr getSubExpression() const { return m_exp; }
  35 private:
  36   ExpressionPtr m_exp;
  37 };
  38
  39 ///////////////////////////////////////////////////////////////////////////////
  40 }
  41
  42 #endif // incl_HPHP_DYNAMIC_VARIABLE_H_