nel/src/misc/class_registry.cpp

   1 // NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
   2 // Copyright (C) 2010  Winch Gate Property Limited
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU Affero General Public License as
   6 // published by the Free Software Foundation, either version 3 of the
   7 // License, or (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU Affero General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU Affero General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #include "stdmisc.h"
  18
  19 #include "nel/misc/class_registry.h"
  20 #include "nel/misc/debug.h"
  21
  22 using namespace std;
  23
  24 #ifdef DEBUG_NEW
  25         #define new DEBUG_NEW
  26 #endif
  27
  28 namespace NLMISC
  29 {
  30
  31
  32 // ======================================================================================================
  33 CClassRegistry::TClassMap               *CClassRegistry::RegistredClasses = NULL;
  34
  35
  36 // ======================================================================================================
  37 void            CClassRegistry::init()
  38 {
  39         if (RegistredClasses == NULL)
  40                 RegistredClasses = new TClassMap;
  41 }
  42
  43 // ======================================================================================================
  44 void            CClassRegistry::release()
  45 {
  46         if( RegistredClasses )
  47                 delete RegistredClasses;
  48         RegistredClasses = NULL;
  49 }
  50
  51 // ======================================================================================================
  52 IClassable      *CClassRegistry::create(const string &className)
  53 {
  54         init();
  55
  56         TClassMap::iterator     it;
  57
  58         it=RegistredClasses->find(className);
  59
  60         if(it==RegistredClasses->end())
  61                 return NULL;
  62         else
  63         {
  64                 IClassable      *ptr;
  65                 ptr=it->second.Creator();
  66                 #ifdef NL_DEBUG
  67                         nlassert(CClassRegistry::checkObject(ptr));
  68                 #endif
  69                 return ptr;
  70         }
  71
  72 }
  73
  74 // ======================================================================================================
  75 void            CClassRegistry::registerClass(const string &className, IClassable* (*creator)(), const string &typeidCheck)
  76 {
  77         init();
  78
  79         CClassNode      node;
  80         node.Creator=creator;
  81         node.TypeIdCheck= typeidCheck;
  82         std::pair<TClassMap::iterator, bool> result;
  83         result = RegistredClasses->insert(TClassMap::value_type(className, node));
  84         if(!result.second)
  85         {
  86                 nlstop;
  87                 throw ERegisteredClass();
  88         }
  89 }
  90
  91 // ======================================================================================================
  92 bool            CClassRegistry::checkObject(IClassable* obj)
  93 {
  94         init();
  95
  96         TClassMap::iterator     it;
  97         it=RegistredClasses->find(obj->getClassName());
  98         if(it==RegistredClasses->end())
  99                 return false;
 100
 101         if( it->second.TypeIdCheck != string(typeid(*obj).name()) )
 102                 return false;
 103
 104         return true;
 105 }
 106
 107
 108
 109 }
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131