estimator.hpp

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

#include "../common.hpp"
#include "block.hpp"

namespace ndn {
namespace encoding {

class Estimator
{
public: // common interface between Encoder and Estimator
  explicit
  Estimator(size_t totalReserve = 0, size_t reserveFromBack = 0);

  Estimator(const Estimator&) = delete;

  Estimator&
  operator=(const Estimator&) = delete;

  size_t
  prependByte(uint8_t value);

  size_t
  appendByte(uint8_t value);

  size_t
  prependByteArray(const uint8_t* array, size_t length);

  size_t
  appendByteArray(const uint8_t* array, size_t length);

  template<class Iterator>
  size_t
  prependRange(Iterator first, Iterator last);

  template<class Iterator>
  size_t
  appendRange(Iterator first, Iterator last);

  size_t
  prependVarNumber(uint64_t varNumber);

  size_t
  appendVarNumber(uint64_t varNumber);

  size_t
  prependNonNegativeInteger(uint64_t integer);

  size_t
  appendNonNegativeInteger(uint64_t integer);

  size_t
  prependByteArrayBlock(uint32_t type, const uint8_t* array, size_t arraySize);

  size_t
  appendByteArrayBlock(uint32_t type, const uint8_t* array, size_t arraySize);

  size_t
  prependBlock(const Block& block);

  size_t
  appendBlock(const Block& block);
};


template<class Iterator>
inline size_t
Estimator::prependRange(Iterator first, Iterator last)
{
  return std::distance(first, last);
}


template<class Iterator>
inline size_t
Estimator::appendRange(Iterator first, Iterator last)
{
  return prependRange(first, last);
}

} // namespace encoding
} // namespace ndn

#endif // NDN_ENCODING_ESTIMATOR_HPP