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Bug 1483449 - Simplify nsStaticAtomUtils::Lookup. r=njn

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This commit is contained in:
Cameron McCormack 2018-08-16 11:40:02 +10:00
parent 061be62bb5
commit 0e70842906
1 changed files with 6 additions and 4 deletions
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10
xpcom/ds/nsStaticAtomUtils.h
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@ -13,15 +13,17 @@
#include "mozilla/Maybe.h"
// This class holds basic operations on arrays of static atoms.
class nsStaticAtomUtils {
class nsStaticAtomUtils
{
public:
static mozilla::Maybe<uint32_t> Lookup(nsAtom* aAtom,
const nsStaticAtom* aAtoms,
uint32_t aCount)
{
for (uint32_t i = 0; i < aCount; i++) {
if (aAtom == &aAtoms[i]) {
return mozilla::Some(i);
if (aAtom->IsStatic()) {
ptrdiff_t index = aAtom->AsStatic() - aAtoms;
if (index >= 0 && index < static_cast<ptrdiff_t>(aCount)) {
return mozilla::Some(static_cast<uint32_t>(index));
}
}
return mozilla::Nothing();