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 // Created on: 1998-06-03
 // Created by: data exchange team
 // Copyright (c) 1998-1999 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.
 
 #ifndef _ShapeBuild_ReShape_HeaderFile
 #define _ShapeBuild_ReShape_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <BRepTools_ReShape.hxx>
 #include <NCollection_Map.hxx>
 #include <TopAbs_ShapeEnum.hxx>
 #include <TopoDS_TShape.hxx>
 #include <Standard_Integer.hxx>
 #include <ShapeExtend_Status.hxx>
 class TopoDS_Shape;
 
 // resolve name collisions with X11 headers
 #ifdef Status
   #undef Status
 #endif
 
 //! Rebuilds a Shape by making pre-defined substitutions on some
 //! of its components
 //!
 //! In a first phase, it records requests to replace or remove
 //! some individual shapes
 //! For each shape, the last given request is recorded
 //! Requests may be applied "Oriented" (i.e. only to an item with
 //! the SAME orientation) or not (the orientation of replacing
 //! shape is respectful of that of the original one)
 //!
 //! Then, these requests may be applied to any shape which may
 //! contain one or more of these individual shapes
 class ShapeBuild_ReShape : public BRepTools_ReShape
 {
 
 public:
   //! Returns an empty Reshape
   Standard_EXPORT ShapeBuild_ReShape();
 
   //! Applies the substitutions requests to a shape
   //!
   //! <until> gives the level of type until which requests are taken
   //! into account. For subshapes of the type <until> no rebuild
   //! and further exploring are done.
   //! ACTUALLY, NOT IMPLEMENTED BELOW TopAbs_FACE
   //!
   //! <buildmode> says how to do on a SOLID,SHELL ... if one of its
   //! sub-shapes has been changed:
   //! 0: at least one Replace or Remove -> COMPOUND, else as such
   //! 1: at least one Remove (Replace are ignored) -> COMPOUND
   //! 2: Replace and Remove are both ignored
   //! If Replace/Remove are ignored or absent, the result as same
   //! type as the starting shape
   Standard_EXPORT virtual TopoDS_Shape Apply(const TopoDS_Shape&    shape,
                                              const TopAbs_ShapeEnum until,
                                              const int              buildmode);
 
   //! Applies the substitutions requests to a shape.
   //!
   //! <until> gives the level of type until which requests are taken
   //! into account. For subshapes of the type <until> no rebuild
   //! and further exploring are done.
   //!
   //! NOTE: each subshape can be replaced by shape of the same type
   //! or by shape containing only shapes of that type (for
   //! example, TopoDS_Edge can be replaced by TopoDS_Edge,
   //! TopoDS_Wire or TopoDS_Compound containing TopoDS_Edges).
   //! If incompatible shape type is encountered, it is ignored
   //! and flag FAIL1 is set in Status.
   Standard_EXPORT TopoDS_Shape Apply(const TopoDS_Shape&    shape,
                                      const TopAbs_ShapeEnum until = TopAbs_SHAPE) override;
 
   //! Returns a complete substitution status for a shape
   //! 0  : not recorded,   <newsh> = original <shape>
   //! < 0: to be removed,  <newsh> is NULL
   //! > 0: to be replaced, <newsh> is a new item
   //! If <last> is False, returns status and new shape recorded in
   //! the map directly for the shape, if True and status > 0 then
   //! recursively searches for the last status and new shape.
   Standard_EXPORT int Status(const TopoDS_Shape& shape,
                              TopoDS_Shape&       newsh,
                              const bool          last = false) override;
 
   //! Queries the status of last call to Apply(shape,enum)
   //! OK   : no (sub)shapes replaced or removed
   //! DONE1: source (starting) shape replaced
   //! DONE2: source (starting) shape removed
   //! DONE3: some subshapes replaced
   //! DONE4: some subshapes removed
   //! FAIL1: some replacements not done because of bad type of subshape
   Standard_EXPORT virtual bool Status(const ShapeExtend_Status status) const;
 
   DEFINE_STANDARD_RTTIEXT(ShapeBuild_ReShape, BRepTools_ReShape)
 
 private:
   //! Recursive worker for Apply with a DFS in-flight set keyed by TShape handle.
   //! Prevents unbounded descent when a replacement is a compound that transitively
   //! contains the original shape as a sub-shape (cyclic containment, distinct from
   //! cycles in the replacement map itself).
   TopoDS_Shape applyImpl(const TopoDS_Shape&                          theShape,
                          const TopAbs_ShapeEnum                       theUntil,
                          NCollection_Map<occ::handle<TopoDS_TShape>>& theInFlight);
 };
 
 #endif // _ShapeBuild_ReShape_HeaderFile

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