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133 lines
4.4 KiB
C++
133 lines
4.4 KiB
C++
// Created on: 1991-01-10
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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_NamedUnknown_HeaderFile
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#define _Expr_NamedUnknown_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <Expr_NamedExpression.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Integer.hxx>
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#include <Standard_Real.hxx>
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#include <Expr_Array1OfNamedUnknown.hxx>
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#include <TColStd_Array1OfReal.hxx>
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class Expr_GeneralExpression;
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class Expr_NotAssigned;
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class Standard_OutOfRange;
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class Standard_NumericError;
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class Expr_InvalidAssignment;
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class Expr_InvalidOperand;
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class Expr_NotEvaluable;
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class TCollection_AsciiString;
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class Expr_NamedUnknown;
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DEFINE_STANDARD_HANDLE(Expr_NamedUnknown, Expr_NamedExpression)
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//! This class describes any variable of an expression.
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//! Assignment is treated directly in this class.
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class Expr_NamedUnknown : public Expr_NamedExpression
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{
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public:
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Standard_EXPORT Expr_NamedUnknown(const TCollection_AsciiString& name);
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//! Tests if an expression is assigned to <me>.
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Standard_Boolean IsAssigned() const;
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//! If exists, returns the assigned expression.
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//! An exception is raised if the expression does not exist.
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Standard_EXPORT const Handle(Expr_GeneralExpression)& AssignedExpression() const;
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//! Assigns <me> to <exp> expression.
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//! Raises exception if <exp> refers to <me>.
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Standard_EXPORT void Assign (const Handle(Expr_GeneralExpression)& exp);
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//! Supresses the assigned expression
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void Deassign();
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//! Returns the number of sub-expressions contained
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//! in <me> ( >= 0)
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Standard_EXPORT Standard_Integer NbSubExpressions() const Standard_OVERRIDE;
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//! Returns the <I>-th sub-expression of <me>
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//! raises OutOfRange if <I> > NbSubExpressions(me)
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Standard_EXPORT const Handle(Expr_GeneralExpression)& SubExpression (const Standard_Integer I) const Standard_OVERRIDE;
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//! Returns a GeneralExpression 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 Handle(Expr_GeneralExpression) Simplified() const Standard_OVERRIDE;
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//! Returns a GeneralExpression after a simplification
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//! of the arguments of <me>.
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Standard_EXPORT Handle(Expr_GeneralExpression) ShallowSimplified() const Standard_OVERRIDE;
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//! Returns a copy of <me> having the same unknowns and functions.
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Standard_EXPORT Handle(Expr_GeneralExpression) Copy() const Standard_OVERRIDE;
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//! Tests if <me> contains NamedUnknown.
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Standard_EXPORT Standard_Boolean ContainsUnknowns() const Standard_OVERRIDE;
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//! Tests if <exp> is contained in <me>.
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Standard_EXPORT Standard_Boolean Contains (const Handle(Expr_GeneralExpression)& exp) const Standard_OVERRIDE;
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Standard_EXPORT Standard_Boolean IsLinear() const Standard_OVERRIDE;
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//! Returns the derivative on <X> unknown of <me>
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Standard_EXPORT Handle(Expr_GeneralExpression) Derivative (const Handle(Expr_NamedUnknown)& X) const Standard_OVERRIDE;
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//! Replaces all occurences of <var> with <with> in <me>
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//! Raises InvalidOperand if <with> contains <me>.
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Standard_EXPORT void Replace (const Handle(Expr_NamedUnknown)& var, const Handle(Expr_GeneralExpression)& with) Standard_OVERRIDE;
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//! Returns the value of <me> (as a Real) by
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//! replacement of <vars> by <vals>.
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//! Raises NotEvaluable if <me> contains NamedUnknown not
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//! in <vars> or NumericError if result cannot be computed.
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Standard_EXPORT Standard_Real Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const Standard_OVERRIDE;
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DEFINE_STANDARD_RTTIEXT(Expr_NamedUnknown,Expr_NamedExpression)
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protected:
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private:
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Handle(Expr_GeneralExpression) myExpression;
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};
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#include <Expr_NamedUnknown.lxx>
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#endif // _Expr_NamedUnknown_HeaderFile
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