gecko/dom/xslt/xpath/nsXPathExpression.h

79 lines
2.2 KiB
C++

/* -*- 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 nsXPathExpression_h__
#define nsXPathExpression_h__
#include "nsIDOMXPathExpression.h"
#include "nsIDOMNSXPathExpression.h"
#include "txIXPathContext.h"
#include "txResultRecycler.h"
#include "nsAutoPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "mozilla/Attributes.h"
class Expr;
class txXPathNode;
/**
* A class for evaluating an XPath expression string
*/
class nsXPathExpression MOZ_FINAL : public nsIDOMXPathExpression,
public nsIDOMNSXPathExpression
{
public:
nsXPathExpression(nsAutoPtr<Expr>&& aExpression, txResultRecycler* aRecycler,
nsIDOMDocument *aDocument);
// nsISupports interface
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXPathExpression,
nsIDOMXPathExpression)
// nsIDOMXPathExpression interface
NS_DECL_NSIDOMXPATHEXPRESSION
// nsIDOMNSXPathExpression interface
NS_DECL_NSIDOMNSXPATHEXPRESSION
private:
~nsXPathExpression() {}
nsAutoPtr<Expr> mExpression;
nsRefPtr<txResultRecycler> mRecycler;
nsCOMPtr<nsIDOMDocument> mDocument;
class EvalContextImpl : public txIEvalContext
{
public:
EvalContextImpl(const txXPathNode& aContextNode,
uint32_t aContextPosition, uint32_t aContextSize,
txResultRecycler* aRecycler)
: mContextNode(aContextNode),
mContextPosition(aContextPosition),
mContextSize(aContextSize),
mLastError(NS_OK),
mRecycler(aRecycler)
{
}
nsresult getError()
{
return mLastError;
}
TX_DECL_EVAL_CONTEXT;
private:
const txXPathNode& mContextNode;
uint32_t mContextPosition;
uint32_t mContextSize;
nsresult mLastError;
nsRefPtr<txResultRecycler> mRecycler;
};
};
#endif