mirror of
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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsXPathExpression_h__
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#define nsXPathExpression_h__
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#include "nsIDOMXPathExpression.h"
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#include "nsIDOMNSXPathExpression.h"
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#include "txIXPathContext.h"
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#include "txResultRecycler.h"
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#include "nsAutoPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "mozilla/Attributes.h"
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class Expr;
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class txXPathNode;
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/**
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* A class for evaluating an XPath expression string
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*/
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class nsXPathExpression MOZ_FINAL : public nsIDOMXPathExpression,
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public nsIDOMNSXPathExpression
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{
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public:
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nsXPathExpression(nsAutoPtr<Expr>&& aExpression, txResultRecycler* aRecycler,
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nsIDOMDocument *aDocument);
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// nsISupports interface
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXPathExpression,
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nsIDOMXPathExpression)
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// nsIDOMXPathExpression interface
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NS_DECL_NSIDOMXPATHEXPRESSION
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// nsIDOMNSXPathExpression interface
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NS_DECL_NSIDOMNSXPATHEXPRESSION
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private:
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nsAutoPtr<Expr> mExpression;
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nsRefPtr<txResultRecycler> mRecycler;
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nsCOMPtr<nsIDOMDocument> mDocument;
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class EvalContextImpl : public txIEvalContext
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{
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public:
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EvalContextImpl(const txXPathNode& aContextNode,
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uint32_t aContextPosition, uint32_t aContextSize,
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txResultRecycler* aRecycler)
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: mContextNode(aContextNode),
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mContextPosition(aContextPosition),
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mContextSize(aContextSize),
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mLastError(NS_OK),
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mRecycler(aRecycler)
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{
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}
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nsresult getError()
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{
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return mLastError;
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}
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TX_DECL_EVAL_CONTEXT;
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private:
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const txXPathNode& mContextNode;
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uint32_t mContextPosition;
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uint32_t mContextSize;
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nsresult mLastError;
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nsRefPtr<txResultRecycler> mRecycler;
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};
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};
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#endif
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