EIC code displayed by LXR master/​include/​opencascade/​StdObjMgt_SharedObject.hxx	Source navigation Diff markup Identifier search General search
	Version: master test Revert   Change

File indexing completed on 2026-11-14 10:36:35

 // Copyright (c) 2015 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.
 
 #ifndef _StdObjMgt_SharedObject_HeaderFile
 #define _StdObjMgt_SharedObject_HeaderFile
 
 #include <Standard_NoSuchObject.hxx>
 #include <StdObjMgt_Persistent.hxx>
 
 // NOLINTBEGIN(modernize-use-override)
 class StdObjMgt_SharedObject
 {
 public:
   template <class Transient>
   class AbstractPersistentBase : public Standard_Transient
   {
   public:
     virtual occ::handle<Transient> Import() const = 0;
   };
 
   template <class TransientT, class Base = StdObjMgt_Persistent>
   class SharedBase : public Base
   {
   public:
     //! Changes transient object
     inline void Transient(const occ::handle<TransientT>& theTransient)
     {
       myTransient = theTransient;
     }
 
     //! Import transient object from the persistent data.
     inline const occ::handle<TransientT>& Import() { return myTransient; }
 
   protected:
     occ::handle<TransientT> myTransient;
   };
 
   template <class Base, class Transient, class Persistent = AbstractPersistentBase<Transient>>
   class DelayedBase : public Base
   {
   public:
     typedef Transient  TransientBase;
     typedef Persistent PersistentBase;
 
     //! Import transient object from the persistent data.
     virtual occ::handle<Transient> Import() { return myTransient; }
 
   public:
     occ::handle<Transient> myTransient;
   };
 
   template <class Base, class PersistentData, class Transient = typename Base::TransientBase>
   class IgnoreData : public Base
   {
   public:
     //! Read persistent data from a file.
     virtual void Read(StdObjMgt_ReadData& theReadData) { PersistentData().Read(theReadData); }
 
     //! Write persistent data to a file.
     virtual void Write(StdObjMgt_WriteData& theWriteData) const
     {
       PersistentData().Write(theWriteData);
     }
 
     //! Gets persistent child objects
     virtual void PChildren(StdObjMgt_Persistent::SequenceOfPersistent& theChildren) const
     {
       PersistentData().PChildren(theChildren);
     }
 
     //! Returns persistent type name
     virtual const char* PName() const { return PersistentData().PName(); }
 
     //! Import transient object from the persistent data.
     virtual occ::handle<Transient> Import() { return nullptr; }
   };
 
 private:
   template <class Base>
   class delayedSubBase : public Base
   {
   public:
     //! Import transient object from the persistent data.
     virtual Handle(typename Base::TransientBase) Import()
     {
       if (Base::myTransient.IsNull() && !myPersistent.IsNull())
       {
         Base::myTransient = myPersistent->Import();
         myPersistent.Nullify();
       }
 
       return Base::myTransient;
     }
 
   public:
     Handle(typename Base::PersistentBase) myPersistent;
   };
 
 public:
   template <class Base, class Persistent = typename Base::PersistentBase>
   class Delayed : public delayedSubBase<Base>
   {
   private:
     template <class T1, class T2>
     struct DownCast
     {
       static occ::handle<T1> make(const occ::handle<T2>& theT2)
       {
         return occ::down_cast<T1>(theT2);
       }
     };
 
     template <class T>
     struct DownCast<T, T>
     {
       static occ::handle<T> make(const occ::handle<T>& theT) { return theT; }
     };
 
   public:
     //! Read persistent data from a file.
     virtual void Read(StdObjMgt_ReadData& theReadData)
     {
       occ::handle<Persistent> aPersistent = new Persistent;
       aPersistent->Read(theReadData);
       this->myPersistent = aPersistent;
     }
 
     //! Write persistent data to a file.
     virtual void Write(StdObjMgt_WriteData& theWriteData) const
     {
       occ::handle<Persistent> aPersistent =
         DownCast<Persistent, typename Base::PersistentBase>::make(this->myPersistent);
       Standard_NoSuchObject_Raise_if(
         aPersistent.IsNull(),
         "StdObjMgt_SharedObject::Delayed::Write - persistent object wasn't set for writing!");
       aPersistent->Write(theWriteData);
     }
 
     //! Gets persistent child objects
     virtual void PChildren(StdObjMgt_Persistent::SequenceOfPersistent& theChildren) const
     {
       occ::handle<Persistent> aPersistent =
         DownCast<Persistent, typename Base::PersistentBase>::make(this->myPersistent);
       Standard_NoSuchObject_Raise_if(
         aPersistent.IsNull(),
         "StdObjMgt_SharedObject::Delayed::PChildren - persistent object wasn't set for writing!");
       aPersistent->PChildren(theChildren);
     }
 
     //! Returns persistent type name
     virtual const char* PName() const
     {
       occ::handle<Persistent> aPersistent =
         DownCast<Persistent, typename Base::PersistentBase>::make(this->myPersistent);
       Standard_NoSuchObject_Raise_if(
         aPersistent.IsNull(),
         "StdObjMgt_SharedObject::Delayed::PName - persistent object wasn't set for writing!");
       return aPersistent->PName();
     }
   };
 };
 
 // NOLINTEND(modernize-use-override)
 #endif

This page was automatically generated by the 2.3.7 LXR engine. The LXR team