The Tor Browser: dom/xslt/xpath/txUnaryExpr.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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 #include "txExpr.h"

     7 #include "txIXPathContext.h"

     9 /*

    10  * Evaluates this Expr based on the given context node and processor state

    11  * @param context the context node for evaluation of this Expr

    12  * @param ps the ContextState containing the stack information needed

    13  * for evaluation.

    14  * @return the result of the evaluation.

    15  */

    16 nsresult

    17 UnaryExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)

    18 {

    19     *aResult = nullptr;

    21     nsRefPtr<txAExprResult> exprRes;

    22     nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprRes));

    23     NS_ENSURE_SUCCESS(rv, rv);

    25     double value = exprRes->numberValue();

    26 #ifdef HPUX

    27     /*

    28      * Negation of a zero doesn't produce a negative

    29      * zero on HPUX. Perform the operation by multiplying with

    30      * -1.

    31      */

    32     return aContext->recycler()->getNumberResult(-1 * value, aResult);

    33 #else

    34     return aContext->recycler()->getNumberResult(-value, aResult);

    35 #endif

    36 }

    38 TX_IMPL_EXPR_STUBS_1(UnaryExpr, NODESET_RESULT, expr)

    40 bool

    41 UnaryExpr::isSensitiveTo(ContextSensitivity aContext)

    42 {

    43     return expr->isSensitiveTo(aContext);

    44 }

    46 #ifdef TX_TO_STRING

    47 void

    48 UnaryExpr::toString(nsAString& str)

    49 {

    50     if (!expr)

    51         return;

    52     str.Append(char16_t('-'));

    53     expr->toString(str);

    54 }

    55 #endif

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