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100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
// Created on: 1992-04-06
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// Created by: Christian CAILLET
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// Copyright (c) 1992-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _IGESData_FileRecognizer_HeaderFile
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#define _IGESData_FileRecognizer_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <Standard_Transient.hxx>
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class IGESData_IGESEntity;
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class Standard_NoSuchObject;
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class IGESData_IGESType;
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class IGESData_FileRecognizer;
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DEFINE_STANDARD_HANDLE(IGESData_FileRecognizer, Standard_Transient)
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class IGESData_FileRecognizer : public Standard_Transient
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{
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public:
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//! Evaluates if recognition has a result, returns it if yes
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//! In case of success, Returns True and puts result in "res"
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//! In case of Failure, simply Returns False
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//! Works by calling deferred method Eval, and in case of failure,
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//! looks for Added Recognizers to work
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Standard_EXPORT Standard_Boolean Evaluate (const IGESData_IGESType& akey, Handle(IGESData_IGESEntity)& res);
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//! Returns result of last recognition (call of Evaluate)
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Standard_EXPORT Handle(IGESData_IGESEntity) Result() const;
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//! Adds a new Recognizer to the Compound, at the end
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//! Several calls to Add work by adding in the order of calls :
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//! Hence, when Eval has failed to recognize, Evaluate will call
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//! Evaluate from the first added Recognizer if there is one,
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//! and to the second if there is still no result, and so on
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Standard_EXPORT void Add (const Handle(IGESData_FileRecognizer)& reco);
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DEFINE_STANDARD_RTTI_INLINE(IGESData_FileRecognizer,Standard_Transient)
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protected:
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//! Assumes that no result has yet been recognized
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Standard_EXPORT IGESData_FileRecognizer();
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//! Records the result of the recognition. Called by specific
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//! method Eval to record a result : after calling it, Eval has
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//! finished and can return
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Standard_EXPORT void SetOK (const Handle(IGESData_IGESEntity)& aresult);
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//! Records that recognition gives no result
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Standard_EXPORT void SetKO();
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//! THIS METHOD DEFINES THE RECOGNITION PROTOCOL, it is proper to
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//! each precise type of Recognizer
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//! For a suitable type of akey, it calls SetOK(result) where
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//! result is an empty result of appropriate type, then returns
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Standard_EXPORT virtual void Eval (const IGESData_IGESType& akey) = 0;
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private:
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Handle(IGESData_IGESEntity) theres;
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Standard_Boolean hasnext;
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Handle(IGESData_FileRecognizer) thenext;
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};
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#endif // _IGESData_FileRecognizer_HeaderFile
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