Apache Log4cxx  Version 1.3.1
object.h
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17 
18 #ifndef _LOG4CXX_HELPERS_OBJECT_H
19 #define _LOG4CXX_HELPERS_OBJECT_H
20 
21 #include <log4cxx/logstring.h>
22 #include <log4cxx/helpers/class.h>
25 
26 
27 #define DECLARE_LOG4CXX_CLAZZ_OBJECT(object)\
28  public:\
29  class Clazz##object : public helpers::Class\
30  {\
31  public:\
32  Clazz##object() : helpers::Class() {}\
33  virtual ~Clazz##object() {}\
34  virtual LOG4CXX_NS::LogString getName() const { return LOG4CXX_STR(#object); } \
35  };\
36  static const helpers::Class& getStaticClass(); \
37  static const LOG4CXX_NS::helpers::ClassRegistration& registerClass();
38 
39 #define DECLARE_ABSTRACT_LOG4CXX_OBJECT(object)\
40  DECLARE_LOG4CXX_CLAZZ_OBJECT(object)\
41  const helpers::Class& getClass() const override;
42 
43 #define DECLARE_LOG4CXX_OBJECT(object)\
44  public:\
45  class Clazz##object : public helpers::Class\
46  {\
47  public:\
48  Clazz##object() : helpers::Class() {}\
49  virtual ~Clazz##object() {}\
50  virtual LOG4CXX_NS::LogString getName() const { return LOG4CXX_STR(#object); } \
51  virtual object* newInstance() const\
52  {\
53  return new object();\
54  }\
55  };\
56  const helpers::Class& getClass() const override;\
57  static const helpers::Class& getStaticClass(); \
58  static const LOG4CXX_NS::helpers::ClassRegistration& registerClass();
59 
60 #define DECLARE_LOG4CXX_OBJECT_WITH_CUSTOM_CLASS(object, class)\
61  public:\
62  const helpers::Class& getClass() const override;\
63  static const helpers::Class& getStaticClass();\
64  static const LOG4CXX_NS::helpers::ClassRegistration& registerClass();
65 
66 #define IMPLEMENT_LOG4CXX_OBJECT(object)\
67  const ::LOG4CXX_NS::helpers::Class& object::getClass() const { return getStaticClass(); }\
68  const ::LOG4CXX_NS::helpers::Class& object::getStaticClass() { \
69  static ::LOG4CXX_NS::helpers::WideLife<Clazz##object> theClass; \
70  return theClass; \
71  } \
72  const LOG4CXX_NS::helpers::ClassRegistration& object::registerClass() { \
73  static ::LOG4CXX_NS::helpers::WideLife<::LOG4CXX_NS::helpers::ClassRegistration> classReg(object::getStaticClass); \
74  return classReg; \
75  }\
76  namespace LOG4CXX_NS { namespace classes { \
77  const ::LOG4CXX_NS::helpers::ClassRegistration& object##Registration = object::registerClass(); \
78  } }
79 
80 
81 #define IMPLEMENT_LOG4CXX_OBJECT_WITH_CUSTOM_CLASS(object, class)\
82  const LOG4CXX_NS::helpers::Class& object::getClass() const { return getStaticClass(); }\
83  const LOG4CXX_NS::helpers::Class& object::getStaticClass() { \
84  static LOG4CXX_NS::helpers::WideLife<class> theClass; \
85  return theClass; \
86  } \
87  const LOG4CXX_NS::helpers::ClassRegistration& object::registerClass() { \
88  static LOG4CXX_NS::helpers::WideLife<LOG4CXX_NS::helpers::ClassRegistration> classReg(object::getStaticClass); \
89  return classReg; \
90  }\
91  namespace LOG4CXX_NS { namespace classes { \
92  const LOG4CXX_NS::helpers::ClassRegistration& object##Registration = object::registerClass(); \
93  } }
94 
95 namespace LOG4CXX_NS
96 {
97 class AppenderSkeleton;
98 class Logger;
99 
100 namespace helpers
101 {
102 class Pool;
103 
105 class LOG4CXX_EXPORT Object
106 {
107  public:
108  virtual ~Object() {}
109  virtual const helpers::Class& getClass() const = 0;
110  virtual bool instanceof(const Class& clazz) const = 0;
111  virtual const void* cast(const Class& clazz) const = 0;
113 };
115 }
116 
123 template<typename Ret,
124  typename Type,
125  bool = std::is_base_of<Ret, helpers::Object>::value,
126  bool = std::is_base_of<Type, helpers::Object>::value>
127 std::shared_ptr<Ret> cast(const std::shared_ptr<Type>& incoming)
128 {
129  if(!incoming)
130  {
131  return std::shared_ptr<Ret>();
132  }
133 
134  Ret* casted = reinterpret_cast<Ret*>(const_cast<void*>(incoming->cast(Ret::getStaticClass())));
135 
136  if ( casted )
137  {
138  return std::shared_ptr<Ret>( incoming, casted );
139  }
140 
141  return std::shared_ptr<Ret>();
142 }
143 
144 }
145 
146 #define BEGIN_LOG4CXX_CAST_MAP()\
147  const void * cast(const helpers::Class& clazz) const override\
148  {\
149  const void * object = 0;\
150  if (&clazz == &helpers::Object::getStaticClass()) return (const helpers::Object *)this;
151 
152 #define END_LOG4CXX_CAST_MAP()\
153  return object;\
154  }\
155  bool instanceof(const helpers::Class& clazz) const override\
156  { return cast(clazz) != 0; }
157 
158 #define LOG4CXX_CAST_ENTRY(Interface)\
159  if (&clazz == &Interface::getStaticClass()) return (const Interface *)this;
160 
161 #define LOG4CXX_CAST_ENTRY2(Interface, interface2)\
162  if (&clazz == &Interface::getStaticClass()) return (Interface *)(interface2 *)this;
163 
164 #define LOG4CXX_CAST_ENTRY_CHAIN(Interface)\
165  object = Interface::cast(clazz);\
166  if (object != 0) return object;
167 
168 #endif //_LOG4CXX_HELPERS_OBJECT_H
Definition: class.h:32
base class for java-like objects.
Definition: object.h:106
virtual const void * cast(const Class &clazz) const =0
virtual const helpers::Class & getClass() const =0
virtual ~Object()
Definition: object.h:108
virtual bool instanceof(const Class &clazz) const =0
std::shared_ptr< Ret > cast(const std::shared_ptr< Type > &incoming)
Attempt to cast one Object to another kind of Object.
Definition: object.h:127
LOG4CXX_PTR_DEF(Appender)
#define DECLARE_LOG4CXX_CLAZZ_OBJECT(object)
Definition: object.h:27