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Improve output of ToString for type objects
[icinga2] / lib / base / type.hpp
1 /******************************************************************************
2  * Icinga 2                                                                   *
3  * Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org)    *
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8  * of the License, or (at your option) any later version.                     *
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
18  ******************************************************************************/
19
20 #ifndef TYPE_H
21 #define TYPE_H
22
23 #include "base/i2-base.hpp"
24 #include "base/string.hpp"
25 #include "base/object.hpp"
26 #include "base/initialize.hpp"
27 #include <boost/function.hpp>
28
29 namespace icinga
30 {
31
32 enum FieldAttribute
33 {
34         FAConfig = 1,
35         FAState = 2,
36         FAInternal = 32
37 }; 
38
39 class Type;
40
41 struct Field
42 {
43         int ID;
44         const char *TypeName;
45         const char *Name;
46         int Attributes;
47
48         Field(int id, const char *type, const char *name, int attributes)
49                 : ID(id), TypeName(type), Name(name), Attributes(attributes)
50         { }
51 };
52
53 enum TypeAttribute
54 {
55         TAAbstract = 1
56 };
57
58 class I2_BASE_API Type : public Object
59 {
60 public:
61         DECLARE_PTR_TYPEDEFS(Type);
62
63         virtual String ToString(void) const;
64
65         virtual String GetName(void) const = 0;
66         virtual Type::Ptr GetBaseType(void) const = 0;
67         virtual int GetAttributes(void) const = 0;
68         virtual int GetFieldId(const String& name) const = 0;
69         virtual Field GetFieldInfo(int id) const = 0;
70         virtual int GetFieldCount(void) const = 0;
71
72         Object::Ptr Instantiate(void) const;
73
74         bool IsAssignableFrom(const Type::Ptr& other) const;
75
76         bool IsAbstract(void) const;
77
78         static void Register(const Type::Ptr& type);
79         static Type::Ptr GetByName(const String& name);
80
81 protected:
82         virtual ObjectFactory GetFactory(void) const = 0;
83 };
84
85 template<typename T>
86 class TypeImpl
87 {
88 };
89
90 #define REGISTER_TYPE(type) \
91         namespace { namespace UNIQUE_NAME(rt) { \
92                 void RegisterType ## type(void) \
93                 { \
94                         icinga::Type::Ptr t = new TypeImpl<type>(); \
95                         type::TypeInstance = t; \
96                         icinga::Type::Register(t); \
97                 } \
98                 \
99                 INITIALIZE_ONCE(RegisterType ## type); \
100         } } \
101         DEFINE_TYPE_INSTANCE(type)
102
103 #define DEFINE_TYPE_INSTANCE(type) \
104         Type::Ptr type::TypeInstance
105
106 }
107
108 #endif /* TYPE_H */