#include "../config/pathan_config.h"
/*
 * Copyright (c) 2001, DecisionSoft Limited All rights reserved.
 * Please see LICENSE.TXT for more information.
 */

#include <pathan/functions/FunctionOneOrMore.hpp>
#include <pathan/Sequence.hpp>
#include <pathan/DynamicContext.hpp>
#include <pathan/exceptions/FunctionException.hpp>

const XMLCh FunctionOneOrMore::name[] = { XERCES_CPP_NAMESPACE_QUALIFIER chLatin_o, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_n, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_e, XERCES_CPP_NAMESPACE_QUALIFIER chDash, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_o, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_r, XERCES_CPP_NAMESPACE_QUALIFIER chDash, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_m, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_o, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_r, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_e, XERCES_CPP_NAMESPACE_QUALIFIER chNull };

/*
 * fn:one-or-more($arg as item()*) as item()+
 */

FunctionOneOrMore::FunctionOneOrMore(const VectorOfDataItems &args, XPath2MemoryManager* memMgr)
  : ConstantFoldingFunction(name,1, 1, "item()*", args, memMgr)
{
}

Sequence FunctionOneOrMore::collapseTreeInternal(DynamicContext* context, int flags) const
{
  Sequence arg = getParamNumber(1,context);

	if (arg.getLength() >= 1) {
    return arg;
  } else {
    DSLthrow(FunctionException, X("FunctionOneOrMore::collapseTreeInternal"),X("fn:one-or-more called with a sequence containing zero items"));
  }
}