hphp/compiler/expression/class_constant_expression.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_CLASS_CONSTANT_EXPRESSION_H_
  18 #define incl_HPHP_CLASS_CONSTANT_EXPRESSION_H_
  19
  20 #include "hphp/compiler/expression/static_class_name.h"
  21 #include "hphp/compiler/analysis/block_scope.h"
  22
  23 namespace HPHP {
  24 ///////////////////////////////////////////////////////////////////////////////
  25
  26 DECLARE_BOOST_TYPES(ClassConstantExpression);
  27
  28 struct ClassConstantExpression : Expression, StaticClassName {
  29   ClassConstantExpression(EXPRESSION_CONSTRUCTOR_PARAMETERS,
  30                           ExpressionPtr classExp,
  31                           const std::string &varName);
  32
  33   DECLARE_EXPRESSION_VIRTUAL_FUNCTIONS;
  34   ExpressionPtr preOptimize(AnalysisResultConstPtr ar) override;
  35   int getLocalEffects() const override { return NoEffect; }
  36
  37   bool containsDynamicConstant(AnalysisResultPtr ar) const override;
  38
  39   const std::string &getConName() const { return m_varName; }
  40
  41   ClassScopeRawPtr getOriginalClassScope() const;
  42
  43   bool hasClass() const = delete;
  44   bool isColonColonClass() const {
  45     return (m_varName.size() == strlen("class")) &&
  46            !strcasecmp(m_varName.c_str(), "class");
  47   }
  48 private:
  49   std::string m_varName;
  50   bool m_depsSet;
  51   bool m_originalScopeSet;
  52   BlockScopeRawPtr m_originalScope;
  53 };
  54
  55 ///////////////////////////////////////////////////////////////////////////////
  56 }
  57 #endif // incl_HPHP_CLASS_CONSTANT_EXPRESSION_H_