Line data    Source code

       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/. */
       5             : 
       6             : #include "txExpr.h"
       7             : #include "txIXPathContext.h"
       8             : 
       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           0 : UnaryExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
      18             : {
      19           0 :     *aResult = nullptr;
      20             : 
      21           0 :     RefPtr<txAExprResult> exprRes;
      22           0 :     nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprRes));
      23           0 :     NS_ENSURE_SUCCESS(rv, rv);
      24             : 
      25           0 :     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           0 :     return aContext->recycler()->getNumberResult(-value, aResult);
      35             : #endif
      36             : }
      37             : 
      38           0 : TX_IMPL_EXPR_STUBS_1(UnaryExpr, NODESET_RESULT, expr)
      39             : 
      40             : bool
      41           0 : UnaryExpr::isSensitiveTo(ContextSensitivity aContext)
      42             : {
      43           0 :     return expr->isSensitiveTo(aContext);
      44             : }
      45             : 
      46             : #ifdef TX_TO_STRING
      47             : void
      48           0 : UnaryExpr::toString(nsAString& str)
      49             : {
      50           0 :     if (!expr)
      51           0 :         return;
      52           0 :     str.Append(char16_t('-'));
      53           0 :     expr->toString(str);
      54             : }
      55             : #endif