The Tor Browser: dom/xslt/xpath/nsXPathExpression.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nsXPathExpression_h__

     7 #define nsXPathExpression_h__

     9 #include "nsIDOMXPathExpression.h"

    10 #include "nsIDOMNSXPathExpression.h"

    11 #include "txIXPathContext.h"

    12 #include "txResultRecycler.h"

    13 #include "nsAutoPtr.h"

    14 #include "nsCycleCollectionParticipant.h"

    15 #include "mozilla/Attributes.h"

    17 class Expr;

    18 class txXPathNode;

    20 /**

    21  * A class for evaluating an XPath expression string

    22  */

    23 class nsXPathExpression MOZ_FINAL : public nsIDOMXPathExpression,

    24                                     public nsIDOMNSXPathExpression

    25 {

    26 public:

    27     nsXPathExpression(nsAutoPtr<Expr>& aExpression, txResultRecycler* aRecycler,

    28                       nsIDOMDocument *aDocument);

    30     // nsISupports interface

    31     NS_DECL_CYCLE_COLLECTING_ISUPPORTS

    32     NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXPathExpression,

    33                                              nsIDOMXPathExpression)

    35     // nsIDOMXPathExpression interface

    36     NS_DECL_NSIDOMXPATHEXPRESSION

    38     // nsIDOMNSXPathExpression interface

    39     NS_DECL_NSIDOMNSXPATHEXPRESSION

    41 private:

    42     nsAutoPtr<Expr> mExpression;

    43     nsRefPtr<txResultRecycler> mRecycler;

    44     nsCOMPtr<nsIDOMDocument> mDocument;

    46     class EvalContextImpl : public txIEvalContext

    47     {

    48     public:

    49         EvalContextImpl(const txXPathNode& aContextNode,

    50                         uint32_t aContextPosition, uint32_t aContextSize,

    51                         txResultRecycler* aRecycler)

    52             : mContextNode(aContextNode),

    53               mContextPosition(aContextPosition),

    54               mContextSize(aContextSize),

    55               mLastError(NS_OK),

    56               mRecycler(aRecycler)

    57         {

    58         }

    60         nsresult getError()

    61         {

    62             return mLastError;

    63         }

    65         TX_DECL_EVAL_CONTEXT;

    67     private:

    68         const txXPathNode& mContextNode;

    69         uint32_t mContextPosition;

    70         uint32_t mContextSize;

    71         nsresult mLastError;

    72         nsRefPtr<txResultRecycler> mRecycler;

    73     };

    74 };

    76 #endif

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