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C++
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Christian Schulte <schulte@gecode.org> * * Copyright: * Christian Schulte, 2007 * * This file is part of Gecode, the generic constraint * development environment: * http://www.gecode.org * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */
namespace Gecode { namespace Iter { namespace Values {
/** * \brief Remove duplicate values from from value iterator * * The iterator only requires that the value iterator * iterates values in increasing order. Duplicates in the * iterated value sequence are removed. * * \ingroup FuncIterValues */ template<class I> class Unique { protected: /// Value iterator used I i; public: /// \name Constructors and initialization //@{ /// Default constructor Unique(void); /// Initialize with value iterator \a i Unique(I& i); /// Initialize with value iterator \a i void init(I& i); //@}
/// \name Iteration control //@{ /// Test whether iterator is still at a value or done bool operator ()(void) const; /// Move iterator to next unique value (if possible) void operator ++(void); //@}
/// \name Value access //@{ /// Return current value int val(void) const; //@} };
template<class I> forceinline Unique<I>::Unique(void) {}
template<class I> forceinline Unique<I>::Unique(I& i0) : i(i0) {}
template<class I> forceinline void Unique<I>::init(I& i0) { i = i0; }
template<class I> forceinline void Unique<I>::operator ++(void) { int n=i; do { ++i; } while (i() && (i.val() == n)); } template<class I> forceinline bool Unique<I>::operator ()(void) const { return i(); }
template<class I> forceinline int Unique<I>::val(void) const { return i.val(); }
}}}
// STATISTICS: iter-any