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Speed up HTMLAttributesImpl::HasClass, mostly by using nsDependentString instead of nsAutoString. Patch by rjesup and me. r=jag sr=jst b=109416

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dbaron%fas.harvard.edu 2001-11-21 03:27:14 +00:00
parent cc547c0ce0
commit ac8f90f6fe
1 changed files with 24 additions and 19 deletions
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43
content/html/style/src/nsHTMLAttributes.cpp
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@ -54,6 +54,7 @@
#include "nsVoidArray.h"
#include "nsISizeOfHandler.h"
#include "nsCOMPtr.h"
#include "nsUnicharUtils.h"
#include "nsIStyleSet.h"
#include "nsRuleWalker.h"
@ -1401,27 +1402,31 @@ HTMLAttributesImpl::GetClasses(nsVoidArray& aArray) const
NS_IMETHODIMP
HTMLAttributesImpl::HasClass(nsIAtom* aClass, PRBool aCaseSensitive) const
{
const nsClassList* classList = &mFirstClass;
while (classList) {
NS_PRECONDITION(aClass, "unexpected null pointer");
if (mFirstClass.mAtom) {
const nsClassList* classList = &mFirstClass;
if (aCaseSensitive) {
if (classList->mAtom == aClass) {
return NS_OK;
}
do {
if (classList->mAtom == aClass)
return NS_OK;
classList = classList->mNext;
} while (classList);
} else {
const PRUnichar* class1Buf;
aClass->GetUnicode(&class1Buf);
// This length calculation (and the |aCaseSensitive| check above) could
// theoretically be pulled out of another loop by creating a separate
// |HasClassCI| function.
nsDependentString class1(class1Buf);
do {
const PRUnichar* class2Buf;
classList->mAtom->GetUnicode(&class2Buf);
nsDependentString class2(class2Buf);
if (Compare(class1, class2, nsCaseInsensitiveStringComparator()) == 0)
return NS_OK;
classList = classList->mNext;
} while (classList);
}
else {
nsAutoString s1;
nsAutoString s2;
if (classList->mAtom) {
classList->mAtom->ToString(s1);
}
if (aClass) {
aClass->ToString(s2);
}
if (s1.EqualsIgnoreCase(s2)) {
return NS_OK;
}
}
classList = classList->mNext;
}
return NS_COMFALSE;
}