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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "txExpr.h"
#include "txIXPathContext.h"
/*
* Evaluates this Expr based on the given context node and processor state
* @param context the context node for evaluation of this Expr
* @param ps the ContextState containing the stack information needed
* for evaluation.
* @return the result of the evaluation.
*/
nsresult UnaryExpr::evaluate(txIEvalContext* aContext,
txAExprResult** aResult) {
*aResult = nullptr;
RefPtr<txAExprResult> exprRes;
nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprRes));
NS_ENSURE_SUCCESS(rv, rv);
double value = exprRes->numberValue();
#ifdef HPUX
/*
* Negation of a zero doesn't produce a negative
* zero on HPUX. Perform the operation by multiplying with
* -1.
*/
return aContext->recycler()->getNumberResult(-1 * value, aResult);
#else
return aContext->recycler()->getNumberResult(-value, aResult);
#endif
}
TX_IMPL_EXPR_STUBS_1(UnaryExpr, NODESET_RESULT, expr)
bool UnaryExpr::isSensitiveTo(ContextSensitivity aContext) {
return expr->isSensitiveTo(aContext);
}
#ifdef TX_TO_STRING
void UnaryExpr::toString(nsAString& str) {
if (!expr) return;
str.Append(char16_t('-'));
expr->toString(str);
}
#endif
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