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