sf

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.
 
#ifndef tools_sg_sf
#define tools_sg_sf
 
// sf for simple field.
 
#include "bsf"
 
//#include "../sto"
 
#include "../io/iwbuf"
#include "../io/irbuf"
#include "../stype"
 
#include <sstream>
#include <istream>
 
namespace tools {
namespace sg {
 
template <class T>
class sf : public bsf<T> {
  typedef bsf<T> parent;
public:
  static const std::string& s_class() {
    static const std::string s_v("tools::sg::sf<"+stype(T())+">");
    return s_v;
  }
  virtual void* cast(const std::string& a_class) const {
    if(void* p = cmp_cast< sf<T> >(this,a_class)) {return p;}
    return parent::cast(a_class);
  }
  virtual const std::string& s_cls() const {return s_class();}
public:
  virtual bool write(io::iwbuf& a_buffer) {
    return a_buffer.write(parent::m_value);
  }
  virtual bool read(io::irbuf& a_buffer) {
    return a_buffer.read(parent::m_value);
  }
  virtual bool dump(std::ostream& a_out) {
    a_out << parent::m_value << std::endl;
    return true;
  }
  virtual bool s_value(std::string& a_s) const {
    std::ostringstream strm;
    strm << parent::m_value;
    a_s = strm.str();
    return true;
  }
  virtual bool s2value(const std::string& a_s) {
    std::istringstream strm(a_s.c_str());
    T v;
    strm >> v;
    if(strm.fail()) return false;
    parent::value(v);
    return true;
  }
public:
  sf(){}
  sf(const T& a_value):parent(a_value){}
  virtual ~sf(){}
public:
  sf(const sf& a_from)
  :parent(a_from)
  {}
  sf& operator=(const sf& a_from){
    parent::operator=(a_from);
    return *this;
  }
public:
  sf& operator=(const T& a_value){
    parent::operator=(a_value);
    return *this;
  }
};
 
/*
template <class T>
class sf_no_io : public bsf<T> {
public:
  virtual bool write(io::iwbuf&) {return true;}
  virtual bool read(io::irbuf&) {return true;}
  virtual bool dump(std::ostream& a_out) {
    a_out << parent::m_value << std::endl;
    return true;
  }
public:
  sf_no_io(){}
  sf_no_io(const T& a_value):parent(a_value){}
public:
  sf_no_io(const sf_no_io& a_from)
  :parent(a_from)
  {}
  sf_no_io& operator=(const sf_no_io& a_from){
    parent::operator=(a_from);
    return *this;
  }
public:
  sf_no_io& operator=(const T& a_value){
    parent::operator=(a_value);
    return *this;
  }
};
*/
 
}}
 
#endif