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License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
// Created on: 2011-01-27
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// Created by: KGV
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// Copyright (c) 2011-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _NCollection_Comparator_HeaderFile
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#define _NCollection_Comparator_HeaderFile
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#include <Precision.hxx>
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/**
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* Class to define basic compare operations.
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* Basic implementation use redirection to standard C++ operators.
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* You can use standard C++ templates mechanisms to redefine these methods
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* or to inherit basic implementation to create multiple comparators
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* for same type with different rules.
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*/
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template<class TheItemType>
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class NCollection_Comparator
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{
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public:
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NCollection_Comparator (const Standard_Real theTolerance = Precision::Confusion())
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: myTolerance (theTolerance) {}
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virtual ~NCollection_Comparator() {}
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public:
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//! Comparison functions which should be overridden
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//! if standard operators are not defined for user type.
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//! Should return true if Left value is greater than Right
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virtual Standard_Boolean IsGreater (const TheItemType& theLeft, const TheItemType& theRight) const
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{
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return theLeft > theRight;
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}
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//! Should return true if values are equal
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virtual Standard_Boolean IsEqual (const TheItemType& theLeft, const TheItemType& theRight) const
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{
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return theLeft == theRight;
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}
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public:
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//! Comparison functions which may be overridden for performance reasons
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//! Should return true if Left value is lower than Right
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virtual Standard_Boolean IsLower (const TheItemType& theLeft, const TheItemType& theRight) const
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{
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return !IsGreater (theLeft, theRight) && !IsEqual (theLeft, theRight);
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}
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virtual Standard_Boolean IsLowerEqual (const TheItemType& theLeft, const TheItemType& theRight) const
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{
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return !IsGreater (theLeft, theRight);
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}
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virtual Standard_Boolean IsGreaterEqual (const TheItemType& theLeft, const TheItemType& theRight) const
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{
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return IsGreater (theLeft, theRight) || IsEqual (theLeft, theRight);
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}
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protected:
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Standard_Real myTolerance;
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};
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#endif /*_NCollection_Comparator_HeaderFile*/
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