dummy

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.
 
#ifndef tools_rroot_dummy
#define tools_rroot_dummy
 
// dummy class with a generic streamer.
// It is used within the reading of a tree
// to create some generic object when we get
// from the file a class name which is unknown
// from the tree factory.
 
#include "iro"
 
#include "buffer"
#include "../scast"
#include "cids"
 
namespace tools {
namespace rroot {
 
class dummy : public virtual iro {
public:
  static const std::string& s_class() {
    static const std::string s_v("tools::rroot::dummy");
    return s_v;
  }
public: //iro
  virtual void* cast(const std::string& a_class) const {
    if(void* p = cmp_cast<dummy>(this,a_class)) return p;
    return 0;
  }
  virtual const std::string& s_cls() const {return s_class();}
public:
  static cid id_class() {return dummy_cid();}
  virtual void* cast(cid a_class) const {
    if(void* p = cmp_cast<dummy>(this,a_class)) {return p;}
    return 0;
  }
public:
  virtual iro* copy() const {return new dummy(*this);}
  virtual bool stream(buffer& a_buffer) {
    //the below code skips correctly the data in the file.
    uint32 startpos = a_buffer.length();
    short v;
    unsigned int s,c;
    if(!a_buffer.read_version(v,s,c)) return false;
    a_buffer.set_offset(startpos+c+sizeof(unsigned int));
    if(!a_buffer.check_byte_count(s,c,"dummy")) return false;
    return true;
  }
public:
  dummy(){
#ifdef TOOLS_MEM
    mem::increment(s_class().c_str());
#endif
  }
  virtual ~dummy(){
#ifdef TOOLS_MEM
    mem::decrement(s_class().c_str());
#endif
  }
public:
  dummy(const dummy& a_from): iro(a_from){
#ifdef TOOLS_MEM
    mem::increment(s_class().c_str());
#endif
  }
  dummy& operator=(const dummy&){return *this;}
};
 
}}
 
#endif