55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2017 CERN
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* @author Maciej Suminski <maciej.suminski@cern.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* @brief Hashing functions for EDA_ITEMs.
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*/
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#include <cstdlib>
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class EDA_ITEM;
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///> Enables/disables properties that will be used for calculating the hash.
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///> The properties might be combined using the bitwise 'or' operator.
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enum HASH_FLAGS
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{
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POSITION = 0x01,
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///> use coordinates relative to the parent object
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REL_COORD = 0x02,
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ROTATION = 0x04,
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LAYER = 0x08,
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NET = 0x10,
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REFERENCE = 0x20,
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VALUE = 0x40,
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ALL = 0xff
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};
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/**
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* Calculates hash of an EDA_ITEM.
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* @param aItem is the item for which the hash will be computed.
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* @return Hash value.
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*/
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std::size_t hash_eda( const EDA_ITEM* aItem, int aFlags = HASH_FLAGS::ALL );
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