/*
 * Copyright (c) 2001-2006
 *     DecisionSoft Limited. All rights reserved.
 * Copyright (c) 2004-2006
 *     Progress Software Corporation. All rights reserved.
 * Copyright (c) 2004-2006
 *     Oracle. All rights reserved.
 *
 * See the file LICENSE for redistribution information.
 *
 * $Id: FunctionCount.hpp,v 1.11 2007/02/07 12:13:01 jpcs Exp $
 */

/*

  xf:count(item* $srcval) => unsignedInt
  
*/

#ifndef _FUNCTIONCOUNT_HPP
#define _FUNCTIONCOUNT_HPP

#include <xqilla/framework/XQillaExport.hpp>

#include <xqilla/ast/ConstantFoldingFunction.hpp>

class XQILLA_API FunctionCount : public ConstantFoldingFunction
{
public:
  static const XMLCh name[];
  static const unsigned int minArgs;
  static const unsigned int maxArgs;

  ///Constructor. Sets arg def to NOT_OPTIONAL.
  FunctionCount(const VectorOfASTNodes &args, XPath2MemoryManager* memMgr);
  
  ASTNode* staticResolution(StaticContext *context);
  virtual ASTNode *staticTyping(StaticContext *context);
  /** Returns the number of nodes in the nodelist argument. **/
  Sequence createSequence(DynamicContext* context, int flags=0) const;
};

#endif // _FUNCTIONCOUNT_HPP
