epoc32/include/stdapis/boost/pending/integer_range.hpp
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:33:34 +0100
branchSymbian3
changeset 4 837f303aceeb
permissions -rw-r--r--
Current Symbian^3 public API header files (from PDK 3.0.h)
This is the epoc32/include tree with the "platform" subtrees removed, and
all but a selected few mbg and rsg files removed.
     1 // (C) Copyright David Abrahams and Jeremy Siek 2000-2001.
     2 // Distributed under the Boost Software License, Version 1.0. (See
     3 // accompanying file LICENSE_1_0.txt or copy at
     4 // http://www.boost.org/LICENSE_1_0.txt)
     5 //
     6 // Revision History:
     7 // 04 Jan 2001  Factored counting_iterator stuff into
     8 //              boost/counting_iterator.hpp (David Abrahams)
     9 
    10 #ifndef BOOST_INTEGER_RANGE_HPP_
    11 #define BOOST_INTEGER_RANGE_HPP_
    12 
    13 #include <boost/config.hpp>
    14 #include <boost/iterator/counting_iterator.hpp>
    15 #include <algorithm>
    16 
    17 namespace boost {
    18 
    19 //=============================================================================
    20 // Counting Iterator and Integer Range Class
    21 
    22 template <class IntegerType>
    23 struct integer_range {
    24     typedef counting_iterator<IntegerType> iterator;
    25 
    26     typedef iterator const_iterator;
    27     typedef IntegerType value_type;
    28     typedef std::ptrdiff_t difference_type;
    29     typedef IntegerType reference;
    30     typedef IntegerType const_reference;
    31     typedef const IntegerType* pointer;
    32     typedef const IntegerType* const_pointer;
    33     typedef IntegerType size_type;
    34 
    35     integer_range(IntegerType start, IntegerType finish)
    36         : m_start(start), m_finish(finish) { }
    37 
    38     iterator begin() const { return iterator(m_start); }
    39     iterator end() const { return iterator(m_finish); }
    40     size_type size() const { return m_finish - m_start; }
    41     bool empty() const { return m_finish == m_start; }
    42     void swap(integer_range& x) {
    43         std::swap(m_start, x.m_start);
    44         std::swap(m_finish, x.m_finish);
    45     }
    46 protected:
    47     IntegerType m_start, m_finish;
    48 };
    49 
    50 template <class IntegerType>
    51 inline integer_range<IntegerType>
    52 make_integer_range(IntegerType first, IntegerType last)
    53 {
    54   return integer_range<IntegerType>(first, last);
    55 }
    56 
    57 } // namespace boost
    58 
    59 #endif // BOOST_INTEGER_RANGE_HPP_