The Tor Browser: dom/xslt/xpath/txExprResult.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 TRANSFRMX_EXPRRESULT_H

     7 #define TRANSFRMX_EXPRRESULT_H

     9 #include "nsString.h"

    10 #include "nsAutoPtr.h"

    11 #include "txCore.h"

    12 #include "txResultRecycler.h"

    14 /*

    15  * ExprResult

    16  *

    17  * Classes Represented:

    18  * BooleanResult, ExprResult, NumberResult, StringResult

    19  *

    20  * Note: for NodeSet, see NodeSet.h

    21 */

    23 class txAExprResult

    24 {

    25 public:

    26     friend class txResultRecycler;

    28     // Update txLiteralExpr::getReturnType and sTypes in txEXSLTFunctions.cpp if

    29     // this enum is changed.

    30     enum ResultType {

    31         NODESET = 0,

    32         BOOLEAN,

    33         NUMBER,

    34         STRING,

    35         RESULT_TREE_FRAGMENT

    36     };

    38     txAExprResult(txResultRecycler* aRecycler) : mRecycler(aRecycler)

    39     {

    40     }

    41     virtual ~txAExprResult()

    42     {

    43     }

    45     void AddRef()

    46     {

    47         ++mRefCnt;

    48         NS_LOG_ADDREF(this, mRefCnt, "txAExprResult", sizeof(*this));

    49     }

    51     void Release(); // Implemented in txResultRecycler.cpp

    53     /**

    54      * Returns the type of ExprResult represented

    55      * @return the type of ExprResult represented

    56     **/

    57     virtual short getResultType()      = 0;

    59     /**

    60      * Creates a String representation of this ExprResult

    61      * @param aResult the destination string to append the String

    62      *                representation to.

    63     **/

    64     virtual void stringValue(nsString& aResult) = 0;

    66     /**

    67      * Returns a pointer to the stringvalue if possible. Otherwise null is

    68      * returned.

    69      */

    70     virtual const nsString* stringValuePointer() = 0;

    72     /**

    73      * Converts this ExprResult to a Boolean (bool) value

    74      * @return the Boolean value

    75     **/

    76     virtual bool booleanValue()          = 0;

    78     /**

    79      * Converts this ExprResult to a Number (double) value

    80      * @return the Number value

    81     **/

    82     virtual double numberValue()          = 0;

    84 private:

    85     nsAutoRefCnt mRefCnt;

    86     nsRefPtr<txResultRecycler> mRecycler;

    87 };

    89 #define TX_DECL_EXPRRESULT                                        \

    90     virtual short getResultType();                                \

    91     virtual void stringValue(nsString& aString);                  \

    92     virtual const nsString* stringValuePointer();                 \

    93     virtual bool booleanValue();                                \

    94     virtual double numberValue();                                 \

    97 class BooleanResult : public txAExprResult {

    99 public:

   100     BooleanResult(bool aValue);

   102     TX_DECL_EXPRRESULT

   104 private:

   105     bool value;

   106 };

   108 class NumberResult : public txAExprResult {

   110 public:

   111     NumberResult(double aValue, txResultRecycler* aRecycler);

   113     TX_DECL_EXPRRESULT

   115     double value;

   117 };

   120 class StringResult : public txAExprResult {

   121 public:

   122     StringResult(txResultRecycler* aRecycler);

   123     StringResult(const nsAString& aValue, txResultRecycler* aRecycler);

   125     TX_DECL_EXPRRESULT

   127     nsString mValue;

   128 };

   130 #endif

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