iterator_range.inl

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/** @file
 *  @author Bram de Greve (bram@cocamware.com)
 *  @author Tom De Muer (tom@cocamware.com)
 *
 *  *** BEGIN LICENSE INFORMATION ***
 *  
 *  The contents of this file are subject to the Common Public Attribution License 
 *  Version 1.0 (the "License"); you may not use this file except in compliance with 
 *  the License. You may obtain a copy of the License at 
 *  http://lass.sourceforge.net/cpal-license. The License is based on the 
 *  Mozilla Public License Version 1.1 but Sections 14 and 15 have been added to cover 
 *  use of software over a computer network and provide for limited attribution for 
 *  the Original Developer. In addition, Exhibit A has been modified to be consistent 
 *  with Exhibit B.
 *  
 *  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT 
 *  WARRANTY OF ANY KIND, either express or implied. See the License for the specific 
 *  language governing rights and limitations under the License.
 *  
 *  The Original Code is LASS - Library of Assembled Shared Sources.
 *  
 *  The Initial Developer of the Original Code is Bram de Greve and Tom De Muer.
 *  The Original Developer is the Initial Developer.
 *  
 *  All portions of the code written by the Initial Developer are:
 *  Copyright (C) 2004-2011 the Initial Developer.
 *  All Rights Reserved.
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 *
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 *  GNU General Public License Version 2 or later (the GPL), in which case the 
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 *  of your version of this file only under the terms of the GPL and not to allow 
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 *  deleting the provisions above and replace them with the notice and other 
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 *  a recipient may use your version of this file under either the CPAL or the GPL.
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 *  *** END LICENSE INFORMATION ***
 */
 
namespace lass
{
namespace stde
{
 
// --- public --------------------------------------------------------------------------------------
 
template <typename I> inline
iterator_range<I>::iterator_range(iterator first, iterator last): 
    first_(first), 
    last_(last) 
{
}
 
 
 
template <typename I> inline
typename iterator_range<I>::iterator 
iterator_range<I>::begin() const 
{ 
    return first_; 
}
 
 
 
template <typename I> inline
typename iterator_range<I>::iterator 
iterator_range<I>::end() const 
{ 
    return last_; 
}
 
 
 
template <typename I> inline
typename iterator_range<I>::iterator 
iterator_range<I>::operator->() const 
{ 
    LASS_ASSERT(!this->empty()); 
    return first_; 
}
 
 
 
template <typename I> inline
typename iterator_range<I>::reference 
iterator_range<I>::operator*() const 
{ 
    LASS_ASSERT(!this->empty()); 
    return *first_; 
}
 
 
 
template <typename I> inline
typename iterator_range<I>::reference 
iterator_range<I>::operator[](difference_type index) const
{ 
    LASS_ASSERT(index < this->size());
    iterator result = first_;
    std::advance(result, index);
    return *result;
}
 
 
 
template <typename I> inline
iterator_range<I>& 
iterator_range<I>::operator++() 
{ 
    LASS_ASSERT(first_ != last_); 
    ++first_; 
    return *this; 
}
 
 
 
template <typename I> inline
iterator_range<I>
iterator_range<I>::operator++(int) 
{ 
    iterator_range<I> result(*this); 
    this->operator++(); 
    return result; 
}
 
 
 
template <typename I> inline
const typename iterator_range<I>::difference_type 
iterator_range<I>::size() const 
{
    return std::distance(first_, last_);
}
 
 
 
template <typename I> inline
bool iterator_range<I>::empty() const 
{ 
    return first_ == last_; 
}
 
 
 
template <typename I> inline
bool iterator_range<I>::operator!() const 
{ 
    return this->empty(); 
}
 
 
 
template <typename I> inline
iterator_range<I>::operator bool() const
{ 
    return !this->empty(); 
}
 
 
 
template <typename I> inline
void iterator_range<I>::swap(iterator_range<I>& other)
{
    std::swap(first_, other.first_);
    std::swap(last_, other.last_);
}
 
 
 
// --- protected -----------------------------------------------------------------------------------
 
 
 
// --- private -------------------------------------------------------------------------------------
 
 
 
// --- free functions ------------------------------------------------------------------------------
 
template <typename I> inline
iterator_range<I> range(const I& a, const I& b)
{
    return iterator_range<I>(a, b);
}
 
 
 
template <typename T, size_t n> inline
iterator_range<T*> range(T (&a)[n])
{
    return iterator_range<T*>(a, a + n);
}
 
 
 
template <typename I> inline
bool operator==(const iterator_range<I>& a, const iterator_range<I>& b)
{
    return a.begin() == b.begin() && a.end() == b.end();
}
 
 
 
template <typename I> inline
bool operator!=(const iterator_range<I>& a, const iterator_range<I>& b)
{
    return !(a == b);
}
 
 
 
}
 
}
 
// EOF