Dogcows Code - chaz/yoink/blob - src/Moof/Serializable.hh

   1
   2 /*******************************************************************************
   3
   4  Copyright (c) 2009, Charles McGarvey
   5  All rights reserved.
   6
   7  Redistribution   and   use  in  source  and  binary  forms,  with  or  without
   8  modification, are permitted provided that the following conditions are met:
   9
  10    * Redistributions  of  source  code  must retain the above copyright notice,
  11      this list of conditions and the following disclaimer.
  12    * Redistributions  in binary form must reproduce the above copyright notice,
  13      this  list of conditions and the following disclaimer in the documentation
  14      and/or other materials provided with the distribution.
  15
  16  THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19  DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  20  FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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  25  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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  27 *******************************************************************************/
  28
  29 #ifndef _MOOF_SERIALIZABLE_HH_
  30 #define _MOOF_SERIALIZABLE_HH_
  31
  32 #include <iostream>
  33 #include <map>
  34 #include <string>
  35 #include <vector>
  36
  37 #include <Moof/Deserializer.hh>
  38 #include <Moof/Serializer.hh>
  39 #include <Moof/StringTools.hh>
  40
  41
  42 namespace Mf {
  43
  44
  45 /**
  46  * Interface for a type which can be serialized and deserialized.
  47  */
  48
  49 struct Serializable
  50 {
  51         // basic types which are serializable
  52         typedef long                                                            Integer;
  53         typedef double                                                          Float;
  54         typedef bool                                                            Boolean;
  55         typedef std::string                                                     String;
  56         typedef std::wstring                                            WideString;
  57         typedef std::vector<SerializableP>                      Array;
  58         typedef std::map<String,SerializableP>          Map;
  59
  60
  61         virtual ~Serializable();
  62
  63         virtual void serialize(Serializer& out) const = 0;
  64         virtual void deserialize(Deserializer& in) = 0;
  65
  66         virtual void print() const = 0;
  67
  68         virtual bool get(Integer& value);
  69         virtual bool get(Float& value);
  70         virtual bool get(Boolean& value);
  71         virtual bool get(String& value);
  72         virtual bool get(WideString& value);
  73         virtual bool get(Array& value);
  74         virtual bool get(Map& value);
  75
  76         /*
  77          * To get a number value which may have been parsed as either an integer or
  78          * double, use these getters instead.
  79          */
  80
  81         bool getNumber(Integer& value);
  82         bool getNumber(Float& value);
  83
  84         virtual bool isNull();
  85 };
  86
  87
  88 template <class T>
  89 class SerializableBasic : public Serializable
  90 {
  91         T value_;
  92
  93 public:
  94
  95         SerializableBasic() {}
  96         SerializableBasic(const T& value) :
  97                 value_(value) {}
  98
  99         void serialize(Serializer& out) const;
 100         void deserialize(Deserializer& in);
 101
 102         void print() const;
 103         bool get(T& value);
 104 };
 105
 106
 107 struct SerializableNull : public Serializable
 108 {
 109         SerializableNull() {}
 110
 111         void serialize(Serializer& out) const;
 112         void deserialize(Deserializer& in);
 113
 114         void print() const;
 115         bool isNull();
 116 };
 117
 118
 119 template <class T>
 120 inline void SerializableBasic<T>::serialize(Serializer& out) const
 121 {
 122         out.push(value_);
 123 }
 124
 125 template <>
 126 inline void
 127 SerializableBasic<Serializable::Array>::serialize(Serializer& out) const
 128 {
 129         out.pushArrayHead();
 130
 131         std::vector<SerializableP>::const_iterator it;
 132         for (it = value_.begin(); it < value_.end(); ++it)
 133         {
 134                 (*it)->serialize(out);
 135         }
 136
 137         out.pushArrayTail();
 138 }
 139
 140 template <>
 141 inline void
 142 SerializableBasic<Serializable::Map>::serialize(Serializer& out) const
 143 {
 144         out.pushMapHead();
 145
 146         for (Map::const_iterator it = value_.begin(); it != value_.end(); ++it)
 147         {
 148                 out.push((*it).first);
 149                 (*it).second->serialize(out);
 150         }
 151
 152         out.pushMapTail();
 153 }
 154
 155 inline void SerializableNull::serialize(Serializer& out) const
 156 {
 157         out.pushNull();
 158 }
 159
 160
 161 template <class T>
 162 inline void SerializableBasic<T>::deserialize(Deserializer& in)
 163 {
 164         in.pop();
 165 }
 166
 167 template <>
 168 inline void
 169 SerializableBasic<Serializable::Array>::deserialize(Deserializer& in)
 170 {
 171         SerializableP obj;
 172
 173         in.pop();
 174
 175         while (obj = in.deserialize())
 176         {
 177                 value_.push_back(obj);
 178         }
 179
 180         in.pop();
 181 }
 182
 183 template <>
 184 inline void
 185 SerializableBasic<Serializable::Map>::deserialize(Deserializer& in)
 186 {
 187         SerializableP obj;
 188
 189         in.pop();
 190
 191         while (obj = in.deserialize())
 192         {
 193                 std::string key;
 194                 if (obj->get(key))
 195                 {
 196                         value_[key] = in.deserialize();
 197                 }
 198         }
 199
 200         in.pop();
 201 }
 202
 203 inline void SerializableNull::deserialize(Deserializer& in)
 204 {
 205         in.pop();
 206 }
 207
 208
 209 template <class T>
 210 inline void SerializableBasic<T>::print() const
 211 {
 212         std::cout << std::boolalpha << typeid(T).name() << "(" << value_ << ")";
 213 }
 214
 215 template <>
 216 inline void SerializableBasic<Serializable::WideString>::print() const
 217 {
 218         std::wcout << value_;
 219 }
 220
 221 template <>
 222 inline void SerializableBasic<Serializable::Array>::print() const
 223 {
 224         std::cout << "array";
 225 }
 226
 227 template <>
 228 inline void SerializableBasic<Serializable::Map>::print() const
 229 {
 230         std::cout << "map";
 231 }
 232
 233 inline void SerializableNull::print() const
 234 {
 235         std::cout << "null";
 236 }
 237
 238
 239 template <class T>
 240 inline bool SerializableBasic<T>::get(T& value)
 241 {
 242         value = value_;
 243         return true;
 244 }
 245
 246 inline bool SerializableNull::isNull()
 247 {
 248         return true;
 249 }
 250
 251
 252 } // namespace Mf
 253
 254 #endif // _MOOF_SERIALIZABLE_HH_
 255
 256 /** vim: set ts=4 sw=4 tw=80: *************************************************/
 257