geant4/source/externals/g4tools/include/tools/rroot/iros

// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_rroot_iros
#define tools_rroot_iros

#include "object"
#include "../vmanip"
#include "../forit"
#include "../scast"

#include "cids"

namespace tools {
namespace rroot {

class iros : public virtual iro,protected std::vector<iro*> {  //proteced to avoid using std::vector::clear().
  typedef std::vector<iro*> parent;
public:
  static const std::string& s_store_class() {
    static const std::string s_v("TObjArray");
    return s_v;
  }
public:
  static const std::string& s_class() {
    static const std::string s_v("tools::rroot::iros");
    return s_v;
  }
public: //iro
  virtual void* cast(const std::string& a_class) const {
    if(void* p = cmp_cast<iros>(this,a_class)) return p;
    return 0;
  }
  virtual const std::string& s_cls() const {return s_class();}
public:
  static cid id_class() {return obj_list_cid();}
  virtual void* cast(cid a_class) const {
    if(void* p = cmp_cast<iros>(this,a_class)) {return p;}
    else return 0;
  }
public:
  virtual iro* copy() const {return new iros(*this);}
  virtual bool stream(buffer& a_buffer) {
    ifac::args args;
    bool accept_null = false;
    return stream(a_buffer,args,accept_null);
  }
public:
  iros(ifac& a_fac)
  :m_fac(a_fac)
  {
  }
  virtual ~iros(){
    _clear();
  }
public:
  iros(const iros& a_from)
  :iro(a_from)
  ,parent()
  ,m_fac(a_from.m_fac)
  {
    tools_vforcit(iro*,a_from,it) {
      parent::push_back((*it)->copy());
      m_owns.push_back(true);
    }
  }
  iros& operator=(const iros& a_from){
    if(&a_from==this) return *this;

    _clear();

    tools_vforcit(iro*,a_from,it) {
      parent::push_back((*it)->copy());
      m_owns.push_back(true);
    }

    return *this;
  }
public:
  parent::const_iterator begin() const {return parent::begin();}
  parent::iterator begin() {return parent::begin();}
  parent::const_iterator end() const {return parent::end();}
  parent::iterator end() {return parent::end();}
  parent::size_type size() const {return parent::size();}
public:
  void cleanup() {_clear();}  //warning : clear is a function of the parent std::vector.
  void dump(std::ostream& a_out) {
    a_out << " iros : size " << size() << std::endl;
    tools_vforcit(iro*,*this,it) {
      a_out << " class " << (*it)->s_cls() << std::endl;
    }
  }
public:
  bool stream(buffer& a_buffer,const ifac::args& a_args,bool a_accept_null = false) {
    _clear();

    short v;
    unsigned int s, c;
    if(!a_buffer.read_version(v,s,c)) return false;

   {uint32 id,bits;
    if(!Object_stream(a_buffer,id,bits)) return false;}
    std::string name;
    if(!a_buffer.read(name)) return false;
    int nobjects;
    if(!a_buffer.read(nobjects)) return false;
    int lowerBound;
    if(!a_buffer.read(lowerBound)) return false;

    for (int i=0;i<nobjects;i++) {
      iro* obj;
      bool created;
      if(!a_buffer.read_object(m_fac,a_args,obj,created)){
        a_buffer.out() << "tools::rroot::iros::stream : can't read object." << std::endl;
        return false;
      }
      if(obj) {
        if(created) {
          parent::push_back(obj);
          m_owns.push_back(true);
	} else { //someone else manage this object.
          parent::push_back(obj);
          m_owns.push_back(false);
	}
      } else {
        //a_accept_null for branch::stream m_baskets.
        if(a_accept_null) {
          parent::push_back(0);
          m_owns.push_back(false);
        }
      }
    }

    return a_buffer.check_byte_count(s,c,s_store_class());
  }
protected:
  void _clear() {
    typedef parent::iterator it_t;
    typedef std::vector<bool>::iterator itb_t;
    while(!parent::empty()) {
      it_t it = parent::begin();
      itb_t itb = m_owns.begin();
      iro* entry  = (*it);
      bool own = (*itb);
      parent::erase(it);
      m_owns.erase(itb);
      if(own) delete entry;
    }
  }
protected:
  ifac& m_fac;
  std::vector<bool> m_owns;
};

}}

#endif