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range_iterator.hpp
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rSPECMICP SpecMiCP / ReactMiCP
range_iterator.hpp
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/* =============================================================================
Copyright (c) 2014 - 2016
F. Georget <fabieng@princeton.edu> Princeton University
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
============================================================================= */
#ifndef SPECMICP_UTILS_RANGEITERATOR_HPP
#define SPECMICP_UTILS_RANGEITERATOR_HPP
// /!\ this file is included in types.hpp
/*!
\file range_iterator.hpp
\brief Iterator over a range
This is similar to the boost:range_iterator, but without having to use boost
Example :
\code{.cpp}
for (auto x: range(2, 10)) {
# do something with x
}
\endcode
*/
namespace
specmicp
{
//! \namespace specmicp::interator_impl
//! \brief Implementation of the iterator
//! \internal
namespace
iterator_impl
{
//! \brief Iterator over a range of integers
template
<
typename
T
>
class
IntegralIterator
;
//! \brief Constant iterator
template
<
typename
T
>
class
ConstIntegralIterator
;
}
//end namespace iterator_impl
//! \brief An iterator over a range
//!
//! \tparam T an integral type
template
<
typename
T
>
class
RangeIterator
{
public
:
//! \brief type of an iterator
using
iterator
=
iterator_impl
::
IntegralIterator
<
T
>
;
//! \brief type of a const iterator
using
const_iterator
=
const
iterator_impl
::
ConstIntegralIterator
<
T
>
;
//! \brief Construct a range iterator
RangeIterator
(
T
start
,
T
end
)
:
m_start
(
start
),
m_end
(
end
)
{}
//! \brief Construct a range iterator
RangeIterator
(
T
end
)
:
m_start
(
0
),
m_end
(
end
)
{}
//! \brief Construct a range iterator from two iterators
RangeIterator
(
const
iterator
&
start
,
const
iterator
&
end
)
:
m_start
(
*
start
),
m_end
(
*
end
)
{}
//! \brief Construct a range iterator from an iterator
RangeIterator
(
const
iterator
&
end
)
:
m_start
(
0
),
m_end
(
*
end
)
{}
//! \brief Return an iterator to the beginning of the sequence
iterator
begin
()
const
;
//! \brief Return an iterator to the end of the sequence
iterator
end
()
const
;
//! \brief Return a constant iterator to the beginning of the sequence
const_iterator
cbegin
()
const
;
//! \brief Return a constant iterator to the end of the sequence
const_iterator
cend
()
const
;
private
:
T
m_start
;
T
m_end
;
};
//! \brief Return a range of numbers to be use in a for loop
template
<
typename
T
>
RangeIterator
<
T
>
range
(
T
start
,
T
end
)
{
return
RangeIterator
<
T
>
(
start
,
end
);
}
//! \brief Return a range of numbers to be use in a for loop
template
<
typename
T
>
RangeIterator
<
T
>
range
(
T
end
)
{
return
RangeIterator
<
T
>
(
end
);
}
}
// end namespace specmicp
// implementation
#include "range_iterator.inl"
#endif
// SPECMICP_UTILS_RANGEITERATOR_HPP
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