/*
 * Copyright (c) 2001-2008
 *     DecisionSoft Limited. All rights reserved.
 * Copyright (c) 2004-2008
 *     Oracle. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * $Id$
 */

#include "../config/xqilla_config.h"
#include <sstream>

#include <xqilla/functions/FunctionUnordered.hpp>
#include <xqilla/context/DynamicContext.hpp>
#include <xqilla/context/ContextHelpers.hpp>

const XMLCh FunctionUnordered::name[] = {
  XERCES_CPP_NAMESPACE_QUALIFIER chLatin_u, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_n, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_o, 
  XERCES_CPP_NAMESPACE_QUALIFIER chLatin_r, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_d, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_e, 
  XERCES_CPP_NAMESPACE_QUALIFIER chLatin_r, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_e, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_d, 
  XERCES_CPP_NAMESPACE_QUALIFIER chNull 
};
const unsigned int FunctionUnordered::minArgs = 1;
const unsigned int FunctionUnordered::maxArgs = 1;

/**
 * fn:unordered($sourceSeq as item()*) as item()*
**/

FunctionUnordered::FunctionUnordered(const VectorOfASTNodes &args, XPath2MemoryManager* memMgr)
  : XQFunction(name, minArgs, maxArgs, "item()*", args, memMgr)
{
}

ASTNode* FunctionUnordered::staticResolution(StaticContext *context)
{
  AutoNodeSetOrderingReset orderReset(context);
  return resolveArguments(context);
}

ASTNode *FunctionUnordered::staticTypingImpl(StaticContext *context)
{
  _src.clear();

  ASTNode *result = calculateSRCForArguments(context);
  if(result == this) {
    _src.getStaticType() = _args.front()->getStaticAnalysis().getStaticType();
  }
  return result;
}

Result FunctionUnordered::createResult(DynamicContext* context, int flags) const
{
  return getParamNumber(1,context);
}
