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Issue #1826 - Serialize special calc() number values

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This commit is contained in:
Basilisk-Dev 2026-05-06 08:15:05 -04:00 • committed by EAZYBLACK
commit 6a0c0925e5
4 changed files with 235 additions and 14 deletions
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28
layout/style/nsCSSValue.cpp
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@ -6,6 +6,7 @@
/* representation of simple property values within CSS declarations */
#include "mozilla/ArrayUtils.h"
#include "mozilla/FloatingPoint.h"
#include "nsCSSValue.h"
@ -30,6 +31,25 @@
using namespace mozilla;
using namespace mozilla::css;
static void
AppendSerializedCSSFloat(float aValue, nsAString& aResult)
{
if (mozilla::IsNaN(aValue)) {
aResult.AppendLiteral("NaN");
return;
}
if (mozilla::IsInfinite(aValue)) {
if (aValue < 0.0f) {
aResult.Append('-');
}
aResult.AppendLiteral("infinity");
return;
}
aResult.AppendFloat(aValue);
}
static bool
IsLocalRefURL(nsStringBuffer* aString)
{
@ -68,7 +88,6 @@ nsCSSValue::nsCSSValue(float aValue, nsCSSUnit aUnit)
MOZ_ASSERT(eCSSUnit_Percent <= aUnit, "not a float value");
if (eCSSUnit_Percent <= aUnit) {
mValue.mFloat = aValue;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
else {
mUnit = eCSSUnit_Null;
@ -147,7 +166,6 @@ nsCSSValue::nsCSSValue(const nsCSSValue& aCopy)
}
else if (eCSSUnit_Percent <= mUnit) {
mValue.mFloat = aCopy.mValue.mFloat;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
else if (UnitHasStringValue()) {
mValue.mString = aCopy.mValue.mString;
@ -484,7 +502,6 @@ void nsCSSValue::SetPercentValue(float aValue)
Reset();
mUnit = eCSSUnit_Percent;
mValue.mFloat = aValue;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
void nsCSSValue::SetFloatValue(float aValue, nsCSSUnit aUnit)
@ -494,7 +511,6 @@ void nsCSSValue::SetFloatValue(float aValue, nsCSSUnit aUnit)
if (IsFloatUnit(aUnit)) {
mUnit = aUnit;
mValue.mFloat = aValue;
MOZ_ASSERT(!mozilla::IsNaN(mValue.mFloat));
}
}
@ -1980,10 +1996,10 @@ nsCSSValue::AppendToString(nsCSSPropertyID aProperty, nsAString& aResult,
aResult.Append(')');
}
else if (eCSSUnit_Percent == unit) {
aResult.AppendFloat(GetPercentValue() * 100.0f);
AppendSerializedCSSFloat(GetPercentValue() * 100.0f, aResult);
}
else if (eCSSUnit_Percent < unit) { // length unit
aResult.AppendFloat(GetFloatValue());
AppendSerializedCSSFloat(GetFloatValue(), aResult);
}
else if (eCSSUnit_Gradient == unit) {
nsCSSValueGradient* gradient = GetGradientValue();