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107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
// Created on: 1991-01-14
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// Created by: Arnaud BOUZY
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// Copyright (c) 1991-1999 Matra Datavision
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// Copyright (c) 1999-2014 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 _Expr_GeneralRelation_HeaderFile
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#define _Expr_GeneralRelation_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <Standard_Transient.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Integer.hxx>
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class Standard_OutOfRange;
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class Standard_NumericError;
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class Expr_GeneralExpression;
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class Expr_NamedUnknown;
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class TCollection_AsciiString;
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class Expr_GeneralRelation;
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DEFINE_STANDARD_HANDLE(Expr_GeneralRelation, Standard_Transient)
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//! Defines the general purposes of any relation between
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//! expressions.
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class Expr_GeneralRelation : public Standard_Transient
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{
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public:
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//! Returns the current status of the relation
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Standard_EXPORT virtual Standard_Boolean IsSatisfied() const = 0;
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//! Tests if <me> is linear between its NamedUnknowns.
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Standard_EXPORT virtual Standard_Boolean IsLinear() const = 0;
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//! Returns a GeneralRelation after replacement of
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//! NamedUnknowns by an associated expression, and after
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//! values computation.
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Standard_EXPORT virtual Handle(Expr_GeneralRelation) Simplified() const = 0;
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//! Replaces NamedUnknowns by associated expressions,
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//! and computes values in <me>.
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Standard_EXPORT virtual void Simplify() = 0;
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//! Returns a copy of <me> having the same unknowns and
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//! functions.
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Standard_EXPORT virtual Handle(Expr_GeneralRelation) Copy() const = 0;
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//! Returns the number of relations contained in <me>.
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Standard_EXPORT virtual Standard_Integer NbOfSubRelations() const = 0;
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//! Returns the number of SingleRelations contained in
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//! <me>.
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Standard_EXPORT virtual Standard_Integer NbOfSingleRelations() const = 0;
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//! Returns the relation denoted by <index> in <me>.
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//! An exception is raised if <index> is out of range.
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Standard_EXPORT virtual Handle(Expr_GeneralRelation) SubRelation (const Standard_Integer index) const = 0;
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//! Tests if <exp> contains <var>.
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Standard_EXPORT virtual Standard_Boolean Contains (const Handle(Expr_GeneralExpression)& exp) const = 0;
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//! Replaces all occurrences of <var> with <with> in <me>.
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Standard_EXPORT virtual void Replace (const Handle(Expr_NamedUnknown)& var, const Handle(Expr_GeneralExpression)& with) = 0;
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//! returns a string representing <me> in a readable way.
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Standard_EXPORT virtual TCollection_AsciiString String() const = 0;
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DEFINE_STANDARD_RTTIEXT(Expr_GeneralRelation,Standard_Transient)
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protected:
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private:
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};
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#endif // _Expr_GeneralRelation_HeaderFile
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