1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/xslt/xpath/txUnaryExpr.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,55 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "txExpr.h"
1.10 +#include "txIXPathContext.h"
1.11 +
1.12 +/*
1.13 + * Evaluates this Expr based on the given context node and processor state
1.14 + * @param context the context node for evaluation of this Expr
1.15 + * @param ps the ContextState containing the stack information needed
1.16 + * for evaluation.
1.17 + * @return the result of the evaluation.
1.18 + */
1.19 +nsresult
1.20 +UnaryExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
1.21 +{
1.22 + *aResult = nullptr;
1.23 +
1.24 + nsRefPtr<txAExprResult> exprRes;
1.25 + nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprRes));
1.26 + NS_ENSURE_SUCCESS(rv, rv);
1.27 +
1.28 + double value = exprRes->numberValue();
1.29 +#ifdef HPUX
1.30 + /*
1.31 + * Negation of a zero doesn't produce a negative
1.32 + * zero on HPUX. Perform the operation by multiplying with
1.33 + * -1.
1.34 + */
1.35 + return aContext->recycler()->getNumberResult(-1 * value, aResult);
1.36 +#else
1.37 + return aContext->recycler()->getNumberResult(-value, aResult);
1.38 +#endif
1.39 +}
1.40 +
1.41 +TX_IMPL_EXPR_STUBS_1(UnaryExpr, NODESET_RESULT, expr)
1.42 +
1.43 +bool
1.44 +UnaryExpr::isSensitiveTo(ContextSensitivity aContext)
1.45 +{
1.46 + return expr->isSensitiveTo(aContext);
1.47 +}
1.48 +
1.49 +#ifdef TX_TO_STRING
1.50 +void
1.51 +UnaryExpr::toString(nsAString& str)
1.52 +{
1.53 + if (!expr)
1.54 + return;
1.55 + str.Append(char16_t('-'));
1.56 + expr->toString(str);
1.57 +}
1.58 +#endif
