gecko-dev/dom/xslt/xpath/txNodeSetContext.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef __TX_XPATH_SET_CONTEXT
#define __TX_XPATH_SET_CONTEXT
#include "txIXPathContext.h"
#include "txNodeSet.h"
#include "nsAutoPtr.h"
class txNodeSetContext : public txIEvalContext
{
public:
txNodeSetContext(txNodeSet* aContextNodeSet, txIMatchContext* aContext)
: mContextSet(aContextNodeSet), mPosition(0), mInner(aContext)
{
}
// Iteration over the given NodeSet
bool hasNext()
{
return mPosition < size();
}
void next()
{
NS_ASSERTION(mPosition < size(), "Out of bounds.");
mPosition++;
}
void setPosition(uint32_t aPosition)
{
NS_ASSERTION(aPosition > 0 &&
aPosition <= size(), "Out of bounds.");
mPosition = aPosition;
}
TX_DECL_EVAL_CONTEXT;
protected:
nsRefPtr<txNodeSet> mContextSet;
uint32_t mPosition;
txIMatchContext* mInner;
};
#endif // __TX_XPATH_SET_CONTEXT