set_identifier_generator.h

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// Author(s): Wieger Wesselink
// Copyright: see the accompanying file COPYING or copy at
// https://github.com/mCRL2org/mCRL2/blob/master/COPYING
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
 
#ifndef MCRL2_DATA_SET_IDENTIFIER_GENERATOR_H
#define MCRL2_DATA_SET_IDENTIFIER_GENERATOR_H
 
#include "mcrl2/data/identifier_generator.h"
#include "mcrl2/utilities/detail/container_utility.h"
 
namespace mcrl2
{
 
namespace data
{
 
class set_identifier_generator: public identifier_generator<>
{
  protected:
    std::set<core::identifier_string> m_identifiers;
 
  public:
    set_identifier_generator() = default;
 
    void clear_context() override
    {
      m_identifiers.clear();
      m_generator.clear();
    }
 
    void add_identifier(const core::identifier_string& s) override
    {
      m_identifiers.insert(s);
    }
 
    void remove_identifier(const core::identifier_string& s) override
    {
      m_identifiers.erase(s);
    }
 
    bool has_identifier(const core::identifier_string& s) const override
    {
      using utilities::detail::contains;
      return contains(m_identifiers, s);
    }
 
    const std::set<core::identifier_string>& context() const
    {
      return m_identifiers;
    }
};
 
class multiset_identifier_generator: public identifier_generator<>
{
  protected:
    std::multiset<core::identifier_string> m_identifiers;
 
  public:
    multiset_identifier_generator() = default;
 
    void clear_context() override
    {
      m_identifiers.clear();
      m_generator.clear();
    }
 
    void add_identifier(const core::identifier_string& s) override
    {
      m_identifiers.insert(s);
    }
 
    void remove_identifier(const core::identifier_string& s) override
    {
      auto i = m_identifiers.find(s);
      if (i != m_identifiers.end())
      {
        m_identifiers.erase(i);
      }
    }
 
    bool has_identifier(const core::identifier_string& s) const override
    {
      using utilities::detail::contains;
      return contains(m_identifiers, s);
    }
 
    const std::multiset<core::identifier_string>& context() const
    {
      return m_identifiers;
    }
};
 
} // namespace data
 
} // namespace mcrl2
 
#endif // MCRL2_DATA_SET_IDENTIFIER_GENERATOR_H