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//static const char* sccsid = "@(#)Expr_NamedUnknown.cxx 3.2 95/01/10"; // Do not delete this line. Used by sccs.
// Copyright: Matra-Datavision 1991
// File: Expr_NamedUnknown.cxx
// Created: Thu Apr 11 12:24:13 1991
// Author: Arnaud BOUZY
// <adn>
#include <Expr_NamedUnknown.ixx>
#include <Expr_NumericValue.hxx>
#include <Expr.hxx>
#include <Expr_NotAssigned.hxx>
#include <Expr_NotEvaluable.hxx>
#include <Expr_InvalidOperand.hxx>
#include <Expr_InvalidAssignment.hxx>
#include <Standard_OutOfRange.hxx>
Expr_NamedUnknown::Expr_NamedUnknown(const TCollection_AsciiString& name)
{
SetName(name);
myExpression.Nullify();
}
const Handle(Expr_GeneralExpression)& Expr_NamedUnknown::AssignedExpression () const
{
if (!IsAssigned()) {
Expr_NotAssigned::Raise();
}
return myExpression;
}
void Expr_NamedUnknown::Assign (const Handle(Expr_GeneralExpression)& exp)
{
Handle(Expr_NamedUnknown) me = this;
if (exp->Contains(me)) {
Expr_InvalidAssignment::Raise();
}
myExpression = exp;
}
const Handle(Expr_GeneralExpression)& Expr_NamedUnknown::SubExpression (const Standard_Integer I) const
{
if (!IsAssigned()) {
Standard_OutOfRange::Raise();
}
if (I != 1) {
Standard_OutOfRange::Raise();
}
return AssignedExpression();
}
Handle(Expr_GeneralExpression) Expr_NamedUnknown::Simplified () const
{
if (!IsAssigned()) {
Handle(Expr_NamedUnknown) me = this;
return me;
}
else {
return myExpression->Simplified();
}
}
Handle(Expr_GeneralExpression) Expr_NamedUnknown::Copy () const
{
Handle(Expr_NamedUnknown) cop = new Expr_NamedUnknown(GetName());
if (IsAssigned()) {
cop->Assign(Expr::CopyShare(myExpression));
}
return cop;
}
Standard_Boolean Expr_NamedUnknown::ContainsUnknowns () const
{
if (IsAssigned()) {
if (myExpression->IsKind(STANDARD_TYPE(Expr_NamedUnknown))) {
return Standard_True;
}
return myExpression->ContainsUnknowns();
}
else {
return Standard_False;
}
}
Standard_Boolean Expr_NamedUnknown::Contains (const Handle(Expr_GeneralExpression)& exp) const
{
if (!IsAssigned()) {
return Standard_False;
}
if (myExpression == exp) {
return Standard_True;
}
return myExpression->Contains(exp);
}
Standard_Boolean Expr_NamedUnknown::IsLinear () const
{
if (IsAssigned()) {
return myExpression->IsLinear();
}
else {
return Standard_True;
}
}
Handle(Expr_GeneralExpression) Expr_NamedUnknown::Derivative (const Handle(Expr_NamedUnknown)& X) const
{
Handle(Expr_NamedUnknown) me = this;
if (me != X) {
if (IsAssigned()) {
return myExpression->Derivative(X);
}
else {
return new Expr_NumericValue(0.0);
}
}
else {
return new Expr_NumericValue(1.0);
}
}
void Expr_NamedUnknown::Replace (const Handle(Expr_NamedUnknown)& var, const Handle(Expr_GeneralExpression)& with)
{
if (IsAssigned()) {
if (myExpression == var) {
Handle(Expr_NamedUnknown) me = this;
if (with->Contains(me)) {
Expr_InvalidOperand::Raise();
}
Assign(with);
}
else {
if (myExpression->Contains(var)) {
myExpression->Replace(var,with);
}
}
}
}
Handle(Expr_GeneralExpression) Expr_NamedUnknown::ShallowSimplified () const
{
if (IsAssigned()) {
return myExpression;
}
Handle(Expr_NamedUnknown) me = this;
return me;
}
Standard_Real Expr_NamedUnknown::Evaluate(const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const
{
if (!IsAssigned()) {
Handle(Expr_NamedUnknown) me = this;
for (Standard_Integer i=vars.Lower();i<=vars.Upper();i++) {
if (me->GetName() == vars(i)->GetName()) {
return vals(i-vars.Lower()+vals.Lower());
}
}
Expr_NotEvaluable::Raise();
}
return myExpression->Evaluate(vars,vals);
}
Standard_Integer Expr_NamedUnknown::NbSubExpressions () const
{
if (IsAssigned()) {
return 1;
}
else {
return 0;
}
}
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