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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp')
-rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp new file mode 100644 index 000000000..c5da1e9d0 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp @@ -0,0 +1,74 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file sample_update_policy.hpp + * Contains a sample policy for list update containers. + */ + +#ifndef PB_DS_SAMPLE_UPDATE_POLICY_HPP +#define PB_DS_SAMPLE_UPDATE_POLICY_HPP + +// A sample list-update policy. +struct sample_update_policy +{ + // Default constructor. + sample_update_policy(); + + // Copy constructor. + sample_update_policy(const sample_update_policy&); + + // Swaps content. + inline void + swap(sample_update_policy& other); + +protected: + // Metadata on which this functor operates. + typedef some_metadata_type metadata_type; + + // Creates a metadata object. + metadata_type + operator()() const; + + // Decides whether a metadata object should be moved to the front of + // the list. A list-update based containers object will call this + // method to decide whether to move a node to the front of the + // list. The method shoule return true if the node should be moved + // to the front of the list. + bool + operator()(metadata_reference) const; +}; + +#endif |