OCCT

// Created on: 1991-03-06
// Created by: Arnaud BOUZY
// Copyright (c) 1991-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <Expr_GeneralExpression.hxx>
#include <Expr_NamedUnknown.hxx>
#include <Expr_NotEvaluable.hxx>
#include <Standard_OutOfRange.hxx>
#include <Standard_Type.hxx>
#include <TCollection_AsciiString.hxx>

IMPLEMENT_STANDARD_RTTIEXT(Expr_GeneralExpression, Standard_Transient)

bool Expr_GeneralExpression::IsShareable() const
{
  return false;
}

occ::handle<Expr_GeneralExpression> Expr_GeneralExpression::NDerivative(
  const occ::handle<Expr_NamedUnknown>& X,
  const int                             N) const
{
  if (N <= 0)
  {
    throw Standard_OutOfRange();
  }
  occ::handle<Expr_GeneralExpression> first = Derivative(X);
  if (N > 1)
  {
    return first->NDerivative(X, N - 1);
  }
  return first;
}

double Expr_GeneralExpression::EvaluateNumeric() const
{
  if (ContainsUnknowns())
  {
    throw Expr_NotEvaluable();
  }
  NCollection_Array1<occ::handle<Expr_NamedUnknown>> tabvr(1, 1);
  NCollection_Array1<double>                         tabvl(1, 1);
  return Evaluate(tabvr, tabvl);
}