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


#include <pathan/dataItem/DataItemLiteral.hpp>
#include <pathan/DynamicContext.hpp>
#include <pathan/ATStringOrDerived.hpp>
#include <pathan/ATDoubleOrDerived.hpp>
#include <pathan/ATDecimalOrDerived.hpp>
#include <pathan/Item.hpp>
#include <pathan/dataItem/DataItemSequence.hpp>

DataItemLiteral::DataItemLiteral(const ATStringOrDerived* s, XPath2MemoryManager* memMgr)
	: DataItemImpl(memMgr) {
	_item = s;
	setType(DataItem::LITERAL);
}

DataItemLiteral::DataItemLiteral(const ATDecimalOrDerived* d, XPath2MemoryManager* memMgr)
	: DataItemImpl(memMgr) {
	_item = d;
	setType(DataItem::LITERAL);
}

DataItemLiteral::DataItemLiteral(const ATDoubleOrDerived* d, XPath2MemoryManager* memMgr)
	: DataItemImpl(memMgr) {
	_item = d;
	setType(DataItem::LITERAL);
}

DataItemLiteral::~DataItemLiteral() {
	//no-op
}

DataItem* DataItemLiteral::staticResolution(StaticContext *context, StaticResolutionContext *src) {
  DataItem *result = new (getMemoryManager()) DataItemSequence(_item, getMemoryManager());
  result->addPredicates(getPredicates());
  return result->staticResolution(context, src);
}

Sequence DataItemLiteral::collapseTreeInternal(DynamicContext* context, int flags) const
{
	return Sequence(_item, context->getMemoryManager());
}