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/*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef otbParser_h
#define otbParser_h
#include "itkLightObject.h"
#include "itkObjectFactory.h"
#include "otb_muparser.h"
namespace otb
{
class ParserImpl;
/** \class Parser
* \brief Definition of the standard floating point parser.
* Standard implementation of the mathematical expressions parser.
*
* \sa BandMathImageFilter
*
*
* \ingroup OTBMathParser
*/
class ITK_EXPORT Parser : public itk::LightObject
{
public:
/** Standard class typedefs. */
typedef Parser Self;
typedef itk::LightObject Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** New macro for creation of through a Smart Pointer */
itkNewMacro(Self);
/** Run-time type information (and related methods) */
itkTypeMacro(Parser, itk::LightObject);
/** Convenient type definitions */
typedef Parser ParserType;
typedef double ValueType;
/** Type for function/number of arguments map */
typedef std::map<std::string, int> FunctionMapType;
/** Set the expression to be parsed */
virtual void SetExpr(const std::string & Expression);
/** Trigger the parsing */
ValueType Eval();
/** Define a variable */
void DefineVar(const std::string &sName, ValueType *fVar);
/** Clear all the defined variables */
void ClearVar();
/** Return the expression to be parsed */
const std::string& GetExpr() const;
/** Return the list of variables */
const std::map<std::string, Parser::ValueType*>& GetVar() const;
/** Return a map of function names and associated number of arguments */
FunctionMapType GetFunList() const;
/** Check Expression **/
bool CheckExpr();
protected:
Parser();
~Parser() ITK_OVERRIDE;
void PrintSelf(std::ostream& os, itk::Indent indent) const ITK_OVERRIDE;
private:
Parser(const Self &); //purposely not implemented
void operator =(const Self &); //purposely not implemented
typedef itk::SmartPointer<ParserImpl> ParserImplPtr;
ParserImplPtr m_InternalParser;
}; // end class
}//end namespace otb
#endif
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