interest-filter.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NDN_INTEREST_FILTER_HPP
#define NDN_INTEREST_FILTER_HPP

#include "name.hpp"

namespace ndn {

class RegexPatternListMatcher;

class InterestFilter
{
public:
  class Error : public std::runtime_error
  {
  public:
    explicit
    Error(const std::string& what)
      : std::runtime_error(what)
    {
    }
  };

  InterestFilter(const Name& prefix);

  InterestFilter(const char* prefixUri);

  InterestFilter(const std::string& prefixUri);

  InterestFilter(const Name& prefix, const std::string& regexFilter);

  operator const Name&() const
  {
    if (static_cast<bool>(m_regexFilter)) {
      BOOST_THROW_EXCEPTION(Error("Please update OnInterest callback to accept const "
                                  "InterestFilter& (non-trivial Interest filter is being used)"));
    }
    return m_prefix;
  }

  bool
  doesMatch(const Name& name) const;

  const Name&
  getPrefix() const
  {
    return m_prefix;
  }

  bool
  hasRegexFilter() const
  {
    return static_cast<bool>(m_regexFilter);
  }

  const RegexPatternListMatcher&
  getRegexFilter() const
  {
    return *m_regexFilter;
  }

private:
  Name m_prefix;
  shared_ptr<RegexPatternListMatcher> m_regexFilter;
};

std::ostream&
operator<<(std::ostream& os, const InterestFilter& filter);


inline
InterestFilter::InterestFilter(const Name& prefix)
  : m_prefix(prefix)
{
}

inline
InterestFilter::InterestFilter(const char* prefixUri)
  : m_prefix(prefixUri)
{
}

inline
InterestFilter::InterestFilter(const std::string& prefixUri)
  : m_prefix(prefixUri)
{
}

} // namespace ndn

#endif // NDN_INTEREST_FILTER_HPP