// Boost tokenizer.hpp  -----------------------------------------------------//

// (c) Copyright Jeremy Siek and John R. Bandela 2001. 

// 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)

// See http://www.boost.org/libs/tokenizer for documenation

// Revision History:

// 03 Jul 2003   John Bandela

//      Converted to new iterator adapter

// 02 Feb 2002   Jeremy Siek

//      Removed tabs and a little cleanup.

#ifndef BOOST_TOKENIZER_JRB070303_HPP_

#define BOOST_TOKENIZER_JRB070303_HPP_

#include <boost/token_iterator.hpp>

namespace boost {

  //===========================================================================

  // A container-view of a tokenized "sequence"

  template <

    typename TokenizerFunc = char_delimiters_separator<char>, 

    typename Iterator = std::string::const_iterator,

    typename Type = std::string

  >

  class tokenizer {

  private:

    typedef token_iterator_generator<TokenizerFunc,Iterator,Type> TGen;

    // It seems that MSVC does not like the unqualified use of iterator,

    // Thus we use iter internally when it is used unqualified and

    // the users of this class will always qualify iterator.     

    typedef typename TGen::type iter;

  public:

    typedef iter iterator;

    typedef iter const_iterator;

    typedef Type value_type;

    typedef value_type& reference;

    typedef const value_type& const_reference;

    typedef value_type* pointer;

    typedef const pointer const_pointer;

    typedef void size_type;

    typedef void difference_type;

    tokenizer(Iterator first, Iterator last,

              const TokenizerFunc& f = TokenizerFunc()) 

      : first_(first), last_(last), f_(f) { }

    template <typename Container>

    tokenizer(const Container& c)

      : first_(c.begin()), last_(c.end()), f_() { }

    template <typename Container>

    tokenizer(const Container& c,const TokenizerFunc& f)

      : first_(c.begin()), last_(c.end()), f_(f) { }

    void assign(Iterator first, Iterator last){

      first_ = first;

      last_ = last;

    }

    void assign(Iterator first, Iterator last, const TokenizerFunc& f){

      assign(first,last);

      f_ = f;

    }

    template <typename Container>

    void assign(const Container& c){

      assign(c.begin(),c.end());

    }

    template <typename Container>

    void assign(const Container& c, const TokenizerFunc& f){

      assign(c.begin(),c.end(),f);

    }

    iter begin() const { return iter(f_,first_,last_); }

    iter end() const { return iter(f_,last_,last_); }

  private:

    Iterator first_;

    Iterator last_;

    TokenizerFunc f_;

  };

} // namespace boost

#endif