ItemArrayEnumerator.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2022 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* ItemArrayEnumerator.h                                       (C) 2000-2018 */
/*                                                                           */
/* Enumérateur sur un tableau d'entités du maillage.                         */
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#ifndef ARCANE_ITEMARRAYENUMERATOR_H
#define ARCANE_ITEMARRAYENUMERATOR_H
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#include "arcane/Item.h"
 
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ARCANE_BEGIN_NAMESPACE
 
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class ItemInternal;
 
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/*!
 * \brief Enumérateur sur un tableau d'entités du maillage.
 */
class ARCANE_CORE_EXPORT ItemArrayEnumerator
{
 public:
  typedef ItemInternal* ItemPtr;
  typedef ItemPtr* Iterator;
 public:
  ItemArrayEnumerator(const Int32ConstArrayView ids,const ItemInternalList& items_internal)
  : m_current(0),
    m_end(ids.size()),
    m_items_local_id(ids.data()),
    m_items_internal(items_internal.data())
    {
    }
  ItemArrayEnumerator(const Int32* ids,Integer nb_item,const ItemPtr* items_internal)
  : m_current(0),
    m_end(nb_item),
    m_items_local_id(ids),
    m_items_internal(items_internal)
    {
    }
 public:
  inline void operator++()
    { ++m_current; }
  inline bool hasNext() const
    { return m_current<m_end; }
  inline Integer itemLocalId() const
    { return m_items_local_id[m_current]; }
  inline Integer index() const
    { return m_current; }
  inline Item operator*() const
    { return Item(m_items_internal,m_items_local_id[m_current]); }
 protected:
  Integer m_current;
  Integer m_end;
  const Int32* ARCANE_RESTRICT m_items_local_id;
  const ItemPtr* m_items_internal;
};
 
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/*!
 * \brief Enumérateur sur un tableau d'entités du maillage de genre \a ItemType.
 */
template<typename ItemType>
class ItemArrayEnumeratorT
: public ItemArrayEnumerator
{
 public:
  ItemArrayEnumeratorT(const Int32ConstArrayView ids,const ItemInternalList& items_internal)
  : ItemArrayEnumerator(ids,items_internal)
    {
    }
  ItemArrayEnumeratorT(const Int32* ids,Integer nb_item,const ItemPtr* items_internal)
  : ItemArrayEnumerator(ids,nb_item,items_internal)
    {
    }
  inline ItemType operator*() const
    { return ItemType(m_items_internal,m_items_local_id[m_current]); }
};
 
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ARCANE_END_NAMESPACE
 
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#endif