Jip J. Dekker
3e72b0e857
git-subtree-dir: software/gecode_on_record git-subtree-split: 37ed9bda495ea87e63217c19a374b5a93bb0078e
102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2007
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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namespace Gecode { namespace Iter { namespace Values {
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/**
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* \brief Value iterator for pointwise minus of a value iterator
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*
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* This iterator in effect changes the order of how values
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* are iterated: the first values of the input iterator defines
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* the last value of the Minus iterator. Upon initialization
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* all values of the input iterator are stored in an array
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* which later allows iteration in inverse direction.
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*
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* \ingroup FuncIterValues
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*/
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class Minus : public ValueListIter {
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public:
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/// \name Constructors and initialization
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//@{
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/// Default constructor
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Minus(void);
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/// Copy constructor
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Minus(const Minus& m);
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/// Initialize with values from \a i
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template<class I>
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Minus(Region& r, I& i);
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/// Initialize with values from \a i
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template<class I>
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void init(Region& r, I& i);
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/// Assignment operator (both iterators must be allocated from the same region)
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Minus& operator =(const Minus& m);
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//@}
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};
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forceinline
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Minus::Minus(void) {}
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forceinline
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Minus::Minus(const Minus& m)
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: ValueListIter(m) {}
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template<class I>
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void
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Minus::init(Region& r, I& i) {
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ValueListIter::init(r);
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ValueList* p = nullptr;
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for (; i(); ++i) {
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ValueList* t = new (*vlio) ValueList;
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t->next = p;
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t->val = -i.val();
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p = t;
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}
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ValueListIter::set(p);
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}
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template<class I>
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forceinline
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Minus::Minus(Region& r, I& i) {
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init(r,i);
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}
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forceinline Minus&
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Minus::operator =(const Minus& m) {
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return static_cast<Minus&>(ValueListIter::operator =(m));
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}
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}}}
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// STATISTICS: iter-any
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