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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/xslt/xpath/txNumberExpr.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/xslt/xpath/txNumberExpr.cpp')
-rw-r--r-- | dom/xslt/xpath/txNumberExpr.cpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txNumberExpr.cpp b/dom/xslt/xpath/txNumberExpr.cpp new file mode 100644 index 0000000000..c3424a91f1 --- /dev/null +++ b/dom/xslt/xpath/txNumberExpr.cpp @@ -0,0 +1,108 @@ +/* -*- 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 "mozilla/FloatingPoint.h" + +#include "txExpr.h" +#include <math.h> +#include "txIXPathContext.h" + +nsresult txNumberExpr::evaluate(txIEvalContext* aContext, + txAExprResult** aResult) { + *aResult = nullptr; + + RefPtr<txAExprResult> exprRes; + nsresult rv = mRightExpr->evaluate(aContext, getter_AddRefs(exprRes)); + NS_ENSURE_SUCCESS(rv, rv); + + double rightDbl = exprRes->numberValue(); + + rv = mLeftExpr->evaluate(aContext, getter_AddRefs(exprRes)); + NS_ENSURE_SUCCESS(rv, rv); + + double leftDbl = exprRes->numberValue(); + double result = 0; + + switch (mOp) { + case ADD: + result = leftDbl + rightDbl; + break; + + case SUBTRACT: + result = leftDbl - rightDbl; + break; + + case DIVIDE: + if (rightDbl == 0) { +#if defined(XP_WIN) + /* XXX MSVC miscompiles such that (NaN == 0) */ + if (std::isnan(rightDbl)) + result = mozilla::UnspecifiedNaN<double>(); + else +#endif + if (leftDbl == 0 || std::isnan(leftDbl)) + result = mozilla::UnspecifiedNaN<double>(); + else if (mozilla::IsNegative(leftDbl) != mozilla::IsNegative(rightDbl)) + result = mozilla::NegativeInfinity<double>(); + else + result = mozilla::PositiveInfinity<double>(); + } else + result = leftDbl / rightDbl; + break; + + case MODULUS: + if (rightDbl == 0) { + result = mozilla::UnspecifiedNaN<double>(); + } else { +#if defined(XP_WIN) + /* Workaround MS fmod bug where 42 % (1/0) => NaN, not 42. */ + if (!std::isinf(leftDbl) && std::isinf(rightDbl)) + result = leftDbl; + else +#endif + result = fmod(leftDbl, rightDbl); + } + break; + + case MULTIPLY: + result = leftDbl * rightDbl; + break; + } + + return aContext->recycler()->getNumberResult(result, aResult); +} //-- evaluate + +TX_IMPL_EXPR_STUBS_2(txNumberExpr, NUMBER_RESULT, mLeftExpr, mRightExpr) + +bool txNumberExpr::isSensitiveTo(ContextSensitivity aContext) { + return mLeftExpr->isSensitiveTo(aContext) || + mRightExpr->isSensitiveTo(aContext); +} + +#ifdef TX_TO_STRING +void txNumberExpr::toString(nsAString& str) { + mLeftExpr->toString(str); + + switch (mOp) { + case ADD: + str.AppendLiteral(" + "); + break; + case SUBTRACT: + str.AppendLiteral(" - "); + break; + case DIVIDE: + str.AppendLiteral(" div "); + break; + case MODULUS: + str.AppendLiteral(" mod "); + break; + case MULTIPLY: + str.AppendLiteral(" * "); + break; + } + + mRightExpr->toString(str); +} +#endif |