// 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 <Interface_Check.hxx>
#include <Interface_Graph.hxx>
#include <Interface_InterfaceModel.hxx>
#include <Interface_Protocol.hxx>
#include <Standard_Transient.hxx>
#include <Standard_Type.hxx>

IMPLEMENT_STANDARD_RTTIEXT(Interface_Protocol, Standard_Transient)

//  Management of active Protocol: very simple, a static variable
static occ::handle<Interface_Protocol>& theactive()
{
  static occ::handle<Interface_Protocol> theact;
  return theact;
}

//=================================================================================================

occ::handle<Interface_Protocol> Interface_Protocol::Active()
{
  return theactive();
}

//=================================================================================================

void Interface_Protocol::SetActive(const occ::handle<Interface_Protocol>& aprotocol)
{
  theactive() = aprotocol;
}

//=================================================================================================

void Interface_Protocol::ClearActive()
{
  theactive().Nullify();
}

//  ===   Typing (formulas provided by default)

//=================================================================================================

int Interface_Protocol::CaseNumber(const occ::handle<Standard_Transient>& obj) const
{
  if (obj.IsNull())
    return 0;
  return TypeNumber(Type(obj));
}

//=================================================================================================

bool Interface_Protocol::IsDynamicType(const occ::handle<Standard_Transient>& /*obj*/) const
{
  return true;
}

//=================================================================================================

int Interface_Protocol::NbTypes(const occ::handle<Standard_Transient>& /*obj*/) const
{
  return 1;
}

//=================================================================================================

occ::handle<Standard_Type> Interface_Protocol::Type(const occ::handle<Standard_Transient>& obj,
                                                    const int /*nt*/) const
{
  if (obj.IsNull())
    return STANDARD_TYPE(Standard_Transient);
  return obj->DynamicType();
}

//=================================================================================================

bool Interface_Protocol::GlobalCheck(const Interface_Graph& /*graph*/,
                                     occ::handle<Interface_Check>& /*ach*/) const
{
  return true;
}
