This class describes any variable of an expression. Assignment is treated directly in this class. More...

#include <Expr_NamedUnknown.hxx>

Inheritance diagram for Expr_NamedUnknown:

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Public Member Functions
	Expr_NamedUnknown (const TCollection_AsciiString &name)

Standard_Boolean	IsAssigned () const
	Tests if an expression is assigned to <me>. More...

const Handle < Expr_GeneralExpression > &	AssignedExpression () const
	If exists, returns the assigned expression. An exception is raised if the expression does not exist. More...

void	Assign (const Handle< Expr_GeneralExpression > &exp)
	Assigns <me> to <exp> expression. Raises exception if <exp> refers to <me>. More...

void	Deassign ()
	Supresses the assigned expression. More...

Standard_Integer	NbSubExpressions () const
	Returns the number of sub-expressions contained in <me> ( >= 0) More...

const Handle < Expr_GeneralExpression > &	SubExpression (const Standard_Integer I) const
	Returns the -th sub-expression of <me> raises OutOfRange if > NbSubExpressions(me) More...

Handle< Expr_GeneralExpression >	Simplified () const
	Returns a GeneralExpression after replacement of NamedUnknowns by an associated expression and after values computation. More...

Handle< Expr_GeneralExpression >	ShallowSimplified () const
	Returns a GeneralExpression after a simplification of the arguments of <me>. More...

Handle< Expr_GeneralExpression >	Copy () const
	Returns a copy of <me> having the same unknowns and functions. More...

Standard_Boolean	ContainsUnknowns () const
	Tests if <me> contains NamedUnknown. More...

Standard_Boolean	Contains (const Handle< Expr_GeneralExpression > &exp) const
	Tests if <exp> is contained in <me>. More...

Standard_Boolean	IsLinear () const
	Tests if <me> is linear on every NamedUnknown it contains. More...

Handle< Expr_GeneralExpression >	Derivative (const Handle< Expr_NamedUnknown > &X) const
	Returns the derivative on <X> unknown of <me> More...

void	Replace (const Handle< Expr_NamedUnknown > &var, const Handle< Expr_GeneralExpression > &with)
	Replaces all occurences of with <with> in <me> Raises InvalidOperand if <with> contains <me>. More...

Standard_Real	Evaluate (const Expr_Array1OfNamedUnknown &vars, const TColStd_Array1OfReal &vals) const
	Returns the value of <me> (as a Real) by replacement of <vars> by <vals>. Raises NotEvaluable if <me> contains NamedUnknown not in <vars> or NumericError if result cannot be computed. More...

Public Member Functions inherited from Expr_NamedExpression
const TCollection_AsciiString &	GetName () const

void	SetName (const TCollection_AsciiString &name)

virtual Standard_Boolean	IsShareable () const
	Tests if <me> can be shared by one or more expressions or must be copied. This method redefines to a True value the GeneralExpression method. More...

Standard_Boolean	IsIdentical (const Handle< Expr_GeneralExpression > &Other) const
	Tests if <me> and <Other> define the same expression. This method does not include any simplification before testing. More...

TCollection_AsciiString	String () const
	returns a string representing <me> in a readable way. More...

Public Member Functions inherited from Expr_GeneralExpression
virtual Handle < Expr_GeneralExpression >	NDerivative (const Handle< Expr_NamedUnknown > &X, const Standard_Integer N) const
	Returns the <N>-th derivative on <X> unknown of <me>. Raise OutOfRange if N <= 0. More...

Standard_Real	EvaluateNumeric () const
	Returns the value of <me> (as a Real) by replacement of <vars> by <vals>. Raises NotEvaluable if <me> contains NamedUnknown not in <vars> or NumericError if result cannot be computed. More...

Public Member Functions inherited from MMgt_TShared
virtual void	Delete () const
	Memory deallocator for transient classes. More...

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...

virtual	~Standard_Transient ()
	Destructor must be virtual. More...

virtual const Handle_Standard_Type &	DynamicType () const
	Returns a type information object about this object. More...

Standard_Boolean	IsInstance (const Handle_Standard_Type &theType) const
	Returns a true value if this is an instance of Type. More...

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...

Standard_Boolean	IsKind (const Handle_Standard_Type &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

virtual Handle_Standard_Transient	This () const
	Returns a Handle which references this object. Must never be called to objects created in stack. More...

Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...

Detailed Description

This class describes any variable of an expression. Assignment is treated directly in this class.

Constructor & Destructor Documentation

Expr_NamedUnknown::Expr_NamedUnknown ( const TCollection_AsciiString & name )

Member Function Documentation

void Expr_NamedUnknown::Assign ( const Handle< Expr_GeneralExpression > & exp )

Assigns <me> to <exp> expression. Raises exception if <exp> refers to <me>.

const Handle< Expr_GeneralExpression >& Expr_NamedUnknown::AssignedExpression ( ) const

If exists, returns the assigned expression. An exception is raised if the expression does not exist.

Standard_Boolean Expr_NamedUnknown::Contains ( const Handle< Expr_GeneralExpression > & exp ) const

virtual

Tests if <exp> is contained in <me>.

Implements Expr_GeneralExpression.

Standard_Boolean Expr_NamedUnknown::ContainsUnknowns ( ) const

virtual

Tests if <me> contains NamedUnknown.

Implements Expr_GeneralExpression.

Handle< Expr_GeneralExpression > Expr_NamedUnknown::Copy ( ) const

virtual

Returns a copy of <me> having the same unknowns and functions.

Implements Expr_GeneralExpression.

void Expr_NamedUnknown::Deassign ( )

Supresses the assigned expression.

Handle< Expr_GeneralExpression > Expr_NamedUnknown::Derivative ( const Handle< Expr_NamedUnknown > & X ) const

virtual

Returns the derivative on <X> unknown of <me>

Implements Expr_GeneralExpression.

Standard_Real Expr_NamedUnknown::Evaluate	(	const Expr_Array1OfNamedUnknown &	vars,
		const TColStd_Array1OfReal &	vals
	)		const

virtual

Returns the value of <me> (as a Real) by replacement of <vars> by <vals>. Raises NotEvaluable if <me> contains NamedUnknown not in <vars> or NumericError if result cannot be computed.

Implements Expr_GeneralExpression.

Standard_Boolean Expr_NamedUnknown::IsAssigned ( ) const

Tests if an expression is assigned to <me>.

Standard_Boolean Expr_NamedUnknown::IsLinear ( ) const

virtual

Tests if <me> is linear on every NamedUnknown it contains.

Implements Expr_GeneralExpression.

Standard_Integer Expr_NamedUnknown::NbSubExpressions ( ) const

virtual

Returns the number of sub-expressions contained in <me> ( >= 0)

Implements Expr_GeneralExpression.