#ifndef __MRW_SIMPLETRACE_HPP__
#define __MRW_SIMPLETRACE_HPP__
#include <iostream>
#include <iomanip>
#include <string>

// GENERIC TRACER FOR TESTS  ---------------------------------------------------
// (without file/line)
#ifndef __GNUG__
#define METHOD(name) mrw::FnTrace fnTrace(this, name)
#define FUNCTION(name) mrw::FnTrace fnTrace(0, name)
#else
#define METHOD mrw::FnTrace fnTrace(this, __FUNCTION__)
#define FUNCTION mrw::FnTrace fnTrace(0, __FUNCTION__)
#endif
#define CALL(name) fnTrace.call(name)
#define TRACE(name) fnTrace.trace(name)
#define TRACE_OFF mrw::FnTrace::off()
#define TRACE_ON mrw::FnTrace::on()
#define NO_TRACE mrw::NoTrace noTrace;

namespace mrw {
  class FnTrace {
  public:
    FnTrace(const void* addr, const std::string& name):
      _addr(addr), _name(name) {
      if (_off==0)
        std::cout<<std::hex<<std::setw(15)<<_addr<<": "<<std::dec
                 <<std::setw(2+_level)<<std::setfill(' ')<<"\\ "
                 <<_name<<std::endl;
      ++_level;
    }
    ~FnTrace() {
      --_level;
      if (_off==0)
        std::cout<<std::hex<<std::setw(15)<<_addr<<": "<<std::dec
                 <<std::setw(2+_level)<<std::setfill(' ')<<"/ "<<_name
                 <<std::endl;
    }
    void call(const std::string& name) {
      if (_off==0)
        std::cout<<std::hex<<std::setw(15)<<_addr<<": "<<std::dec
                 <<std::setw(4+_level)<<std::setfill(' ')<<" -> "<<name
                 <<std::endl;
    }
    void trace(const std::string& name) {
      if (_off==0)
        std::cout<<std::hex<<std::setw(15)<<_addr<<": "<<std::dec
                 <<std::setw(4+_level)<<std::setfill(' ')<<" **** "<<name
                 <<" **** "<<std::endl;
    }
    static void off() {
      ++_off;
    }
    static void on() {
      if (_off>0) --_off;
    }
  private:
    const void* _addr;
    const std::string _name;
    static unsigned int _level;
    static unsigned int _off;
  };
  unsigned int FnTrace::_level(0);
  unsigned int FnTrace::_off(0);
  class NoTrace {
  public:
    NoTrace() {TRACE_OFF;}
    ~NoTrace() {TRACE_ON;}
  };
}
#endif