/*
 * Copyright (c) 2001, DecisionSoft Limited All rights reserved.
 * Please see LICENSE.TXT for more information.
 */

#ifndef _CONSTANTFOLDINGFUNCTION_HPP
#define _CONSTANTFOLDINGFUNCTION_HPP

#include <pathan/Pathan.hpp>
#include <pathan/dataItem/DataItemFunction.hpp>
#include <pathan/Sequence.hpp>

class PATHAN_EXPORT ConstantFoldingFunction : public DataItemFunction
{

public:
  ConstantFoldingFunction(const XMLCh* name, unsigned int argsFrom, unsigned int argsTo, const char* paramDecl, const VectorOfDataItems &args, XPath2MemoryManager* memMgr);
  virtual ~ConstantFoldingFunction();

  /**
   * Called during static analysis to determine if statically correct.
   * Performs constant folding if the arguments to the function are
   * all constant.
   */
  virtual DataItem* staticResolution(StaticContext *context, StaticResolutionContext *src);
};

#endif