NUMToken.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
 * This file is part of the libetonyek project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#ifndef NUMTOKEN_H_INCLUDED
#define NUMTOKEN_H_INCLUDED
 
namespace libetonyek
{
 
namespace NUMToken
{
 
namespace detail
{
 
template<unsigned N, unsigned P>
struct log_impl
{
  static const unsigned value = log_impl<(N >> 1), P + 1>::value;
};
 
template<unsigned P>
struct log_impl<1, P>
{
  static const unsigned value = P;
};
 
template<unsigned P>
struct log_impl<0, P>
{
};
 
template<unsigned N>
struct log
{
  static const unsigned value = log_impl<N, 0>::value;
};
 
}
 
enum
{
  INVALID_TOKEN = 0,
 
  // elements
 
  // attributes
 
  // attribute values
 
  LAST_TOKEN
};
 
// namespaces
enum
{
  TOKEN_RANGE = 2 << (detail::log<LAST_TOKEN + 1>::value + 1),
  NS_NONE = TOKEN_RANGE,
  NS_URI_LS = NS_NONE + TOKEN_RANGE,
  NS_URI_SF = NS_URI_LS + TOKEN_RANGE,
  NS_URI_SFA = NS_URI_SF + TOKEN_RANGE,
  NS_URI_XSI = NS_URI_SFA + TOKEN_RANGE
};
 
}
 
struct NUMTokenizer
{
  int operator()(const char *str) const;
};
 
}
 
#endif // NUMTOKEN_H_INCLUDED
 
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