#include "common.hh"
#include "ltlvisit/destroy.hh"

namespace spot
{

  std::ostream&
  operator<<(std::ostream& os, const gspn_exeption& e)
  {
    os << e.get_where() << " exited with " << e.get_err();
    return os;
  }

  // gspn_environment
  //////////////////////////////////////////////////////////////////////

  gspn_environment::gspn_environment()
  {
  }

  gspn_environment::~gspn_environment()
  {
    for (prop_map::iterator i = props_.begin(); i != props_.end(); ++i)
      ltl::destroy(i->second);
  }

  bool
  gspn_environment::declare(const std::string& prop_str)
  {
    if (props_.find(prop_str) != props_.end())
      return false;
    props_[prop_str] = ltl::atomic_prop::instance(prop_str, *this);
    return true;
  }

  ltl::formula*
  gspn_environment::require(const std::string& prop_str)
  {
    prop_map::iterator i = props_.find(prop_str);
    if (i == props_.end())
      return 0;
    // It's an atomic_prop, so we do not have to use the clone() visitor.
    return i->second->ref();
  }

  /// Get the name of the environment.
  const std::string&
  gspn_environment::name()
  {
    static std::string name("gspn environment");
    return name;
  }

  const gspn_environment::prop_map&
  gspn_environment::get_prop_map() const
  {
    return props_;
  }

}