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224 lines
8.2 KiB
C++
224 lines
8.2 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) 2014 CERN
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* Copyright (C) 2020-2022 KiCad Developers, see AUTHORS.txt for contributors.
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*
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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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#ifndef SELECTION_CONDITIONS_H_
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#define SELECTION_CONDITIONS_H_
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#include <functional>
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#include <core/typeinfo.h>
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#include <vector>
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class SELECTION;
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///< Functor type that checks a specific condition for selected items.
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typedef std::function<bool (const SELECTION&)> SELECTION_CONDITION;
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SELECTION_CONDITION operator||( const SELECTION_CONDITION& aConditionA,
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const SELECTION_CONDITION& aConditionB );
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SELECTION_CONDITION operator&&( const SELECTION_CONDITION& aConditionA,
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const SELECTION_CONDITION& aConditionB );
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SELECTION_CONDITION operator!( const SELECTION_CONDITION& aCondition );
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/// Signature for a reference to a function that takes a SELECTION and returns
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/// a boolean. This type is meant to be used to define logical operations between
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/// SELECTION_CONDITION functors and non-functor SELECTION_CONDITION-like functions.
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/// It should not be used in user code.
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typedef bool ( &SELECTION_BOOL )( const SELECTION& );
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SELECTION_CONDITION operator||( const SELECTION_CONDITION& aConditionA,
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SELECTION_BOOL aConditionB );
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SELECTION_CONDITION operator||( SELECTION_BOOL aConditionA,
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const SELECTION_CONDITION& aConditionB );
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SELECTION_CONDITION operator&&( const SELECTION_CONDITION& aConditionA,
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SELECTION_BOOL aConditionB );
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SELECTION_CONDITION operator&&( SELECTION_BOOL aConditionA,
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const SELECTION_CONDITION& aConditionB );
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/**
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* Class that groups generic conditions for selected items.
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*/
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class SELECTION_CONDITIONS
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{
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public:
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/**
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* The default condition function (always returns true).
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*/
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static bool ShowAlways( const SELECTION& aSelection ) { return true; }
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/**
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* Always returns false.
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*/
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static bool ShowNever( const SELECTION& aSelection ) { return false; }
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/**
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* Test if there are any items selected.
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*/
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static bool NotEmpty( const SELECTION& aSelection );
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/**
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* Test if there are no items selected.
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*/
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static bool Empty( const SELECTION& aSelection );
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/**
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* Test if there no items selected or being edited.
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*/
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static bool Idle( const SELECTION& aSelection );
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/**
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* Test if all selected items are not being edited.
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*/
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static bool IdleSelection( const SELECTION& aSelection );
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/**
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* Create a functor that tests if among the selected items there is at least one of a
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* given type.
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*
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* @param aType is the type that is searched.
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* @return Functor testing for presence of items of a given type.
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*/
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static SELECTION_CONDITION HasType( KICAD_T aType );
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/**
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* Create a functor that tests if among the selected items there is at least one of a
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* given types.
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*
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* @param aTypes is an array containing types that are searched.
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* @return Functor testing for presence of items of a given types.
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*/
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static SELECTION_CONDITION HasTypes( std::vector<KICAD_T> aTypes );
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/**
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* Create a functor that tests if the selected items are *only* of given types.
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*
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* @param aTypes is an array containing types that are searched.
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* @return Functor testing if selected items are exclusively of the requested types.
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*/
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static SELECTION_CONDITION OnlyTypes( std::vector<KICAD_T> aTypes );
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/**
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* Create a functor that tests if the number of selected items is equal to the value given as
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* parameter.
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*
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* @param aNumber is the number of expected items.
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* @return Functor testing if the number of selected items is equal aNumber.
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*/
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static SELECTION_CONDITION Count( int aNumber );
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/**
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* Create a functor that tests if the number of selected items is greater than the value given
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* as parameter.
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*
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* @param aNumber is the number used for comparison.
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* @return Functor testing if the number of selected items is greater than aNumber.
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*/
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static SELECTION_CONDITION MoreThan( int aNumber );
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/**
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* Create a functor that tests if the number of selected items is smaller than the value given
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* as parameter.
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*
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* @param aNumber is the number used for comparison.
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* @return Functor testing if the number of selected items is smaller than aNumber.
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*/
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static SELECTION_CONDITION LessThan( int aNumber );
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private:
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///< Helper function used by HasType()
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static bool hasTypeFunc( const SELECTION& aSelection, KICAD_T aType );
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///< Helper function used by HasTypes()
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static bool hasTypesFunc( const SELECTION& aSelection, std::vector<KICAD_T> aTypes );
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///< Helper function used by OnlyTypes()
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static bool onlyTypesFunc( const SELECTION& aSelection, std::vector<KICAD_T> aTypes );
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///< Helper function used by Count()
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static bool countFunc( const SELECTION& aSelection, int aNumber );
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///< Helper function used by MoreThan()
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static bool moreThanFunc( const SELECTION& aSelection, int aNumber );
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///< Helper function used by LessThan()
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static bool lessThanFunc( const SELECTION& aSelection, int aNumber );
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///< Helper function used by operator||
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static bool orFunc( const SELECTION_CONDITION& aConditionA,
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const SELECTION_CONDITION& aConditionB, const SELECTION& aSelection )
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{
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return aConditionA( aSelection ) || aConditionB( aSelection );
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}
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///< Helper function used by operator&&
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static bool andFunc( const SELECTION_CONDITION& aConditionA,
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const SELECTION_CONDITION& aConditionB, const SELECTION& aSelection )
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{
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return aConditionA( aSelection ) && aConditionB( aSelection );
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}
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///< Helper function used by operator!
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static bool notFunc( const SELECTION_CONDITION& aCondition, const SELECTION& aSelection )
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{
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return !aCondition( aSelection );
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}
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///< Helper function used by operator||
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static bool orBoolFunc( const SELECTION_CONDITION& aConditionA,
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SELECTION_BOOL& aConditionB, const SELECTION& aSelection )
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{
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return aConditionA( aSelection ) || aConditionB( aSelection );
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}
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///< Helper function used by operator&&
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static bool andBoolFunc( const SELECTION_CONDITION& aConditionA,
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SELECTION_BOOL& aConditionB, const SELECTION& aSelection )
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{
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return aConditionA( aSelection ) && aConditionB( aSelection );
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}
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friend SELECTION_CONDITION operator||( const SELECTION_CONDITION& aConditionA,
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const SELECTION_CONDITION& aConditionB );
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friend SELECTION_CONDITION operator&&( const SELECTION_CONDITION& aConditionA,
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const SELECTION_CONDITION& aConditionB );
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friend SELECTION_CONDITION operator!( const SELECTION_CONDITION& aCondition );
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friend SELECTION_CONDITION operator||( const SELECTION_CONDITION& aConditionA,
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SELECTION_BOOL aConditionB );
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friend SELECTION_CONDITION operator&&( const SELECTION_CONDITION& aConditionA,
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SELECTION_BOOL aConditionB );
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};
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#endif /* SELECTION_CONDITIONS_H_ */
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