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

/*

   Namespace-uri function

*/

#ifndef _FUNCTIONNAMESPACEURI_HPP
#define _FUNCTIONNAMESPACEURI_HPP

#include <pathan/Pathan.hpp>

#include <pathan/dataItem/DataItemFunction.hpp>

/** Namespace-uri function */
class PATHAN_EXPORT FunctionNamespaceUri : public DataItemFunction
{
public:
  static const XMLCh name[];

  FunctionNamespaceUri(const VectorOfDataItems &args, XPath2MemoryManager* memMgr);
  
  /**
   * Called during static analysis to determine if statically correct.
   * Performs constant folding if the function has an argument, and it
   * is constant.
   */
  virtual DataItem* staticResolution(StaticContext *context, StaticResolutionContext *src);

  /** Returns the namespace of the node. Takes an optional node,
      and returns an empty string if the node has no name. Uses the current context
      if a node is not specified. */
  Sequence collapseTreeInternal(DynamicContext* context, int flags=0) const;

};

#endif // _FUNCTIONNAMESPACEURI_HPP