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Bug 922681 - Add SetInnerHTML fast path for short strings with no markup. r=bz

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This commit is contained in:
Jan de Mooij
2013-12-17 14:58:32 +01:00
parent bab09875ca
commit efb84633a2
12 changed files with 55 additions and 0 deletions
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6
content/base/public/nsINode.h
View File

@@ -1307,6 +1307,9 @@ private:
NodeHandlingClick,
// Set if the node has had :hover selectors matched against it
NodeHasRelevantHoverRules,
// Set if the element has a parser insertion mode other than "in body",
// per the HTML5 "Parse state" section.
ElementHasWeirdParserInsertionMode,
// Guard value
BooleanFlagCount
};
@@ -1466,6 +1469,9 @@ protected:
void ClearHasLockedStyleStates() { ClearBoolFlag(ElementHasLockedStyleStates); }
bool HasLockedStyleStates() const
{ return GetBoolFlag(ElementHasLockedStyleStates); }
void SetHasWeirdParserInsertionMode() { SetBoolFlag(ElementHasWeirdParserInsertionMode); }
bool HasWeirdParserInsertionMode() const
{ return GetBoolFlag(ElementHasWeirdParserInsertionMode); }
bool HandlingClick() const { return GetBoolFlag(NodeHandlingClick); }
void SetHandlingClick() { SetBoolFlag(NodeHandlingClick); }
void ClearHandlingClick() { ClearBoolFlag(NodeHandlingClick); }

35
content/base/src/FragmentOrElement.cpp
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@@ -2613,6 +2613,28 @@ FragmentOrElement::GetMarkup(bool aIncludeSelf, nsAString& aMarkup)
}
}
static bool
ContainsMarkup(const nsAString& aStr)
{
// Note: we can't use FindCharInSet because null is one of the characters we
// want to search for.
const PRUnichar* start = aStr.BeginReading();
const PRUnichar* end = aStr.EndReading();
while (start != end) {
PRUnichar c = *start;
if (c == PRUnichar('<') ||
c == PRUnichar('&') ||
c == PRUnichar('\r') ||
c == PRUnichar('\0')) {
return true;
}
++start;
}
return false;
}
void
FragmentOrElement::SetInnerHTMLInternal(const nsAString& aInnerHTML, ErrorResult& aError)
{
@@ -2625,6 +2647,19 @@ FragmentOrElement::SetInnerHTMLInternal(const nsAString& aInnerHTML, ErrorResult
target = frag;
}
// Fast-path for strings with no markup. Limit this to short strings, to
// avoid ContainsMarkup taking too long. The choice for 100 is based on
// gut feeling.
//
// Don't do this for elements with a weird parser insertion mode, for
// instance setting innerHTML = "" on a <html> element should add the
// optional <head> and <body> elements.
if (!target->HasWeirdParserInsertionMode() &&
aInnerHTML.Length() < 100 && !ContainsMarkup(aInnerHTML)) {
aError = nsContentUtils::SetNodeTextContent(target, aInnerHTML, false);
return;
}
nsIDocument* doc = target->OwnerDoc();
// Batch possible DOMSubtreeModified events.

1
content/html/content/src/HTMLFrameSetElement.h
View File

@@ -52,6 +52,7 @@ public:
mNumCols(0),
mCurrentRowColHint(NS_STYLE_HINT_REFLOW)
{
SetHasWeirdParserInsertionMode();
}
virtual ~HTMLFrameSetElement();

2
content/html/content/src/HTMLSelectElement.cpp
View File

@@ -116,6 +116,8 @@ HTMLSelectElement::HTMLSelectElement(already_AddRefed<nsINodeInfo> aNodeInfo,
mOptGroupCount(0),
mSelectedIndex(-1)
{
SetHasWeirdParserInsertionMode();
// DoneAddingChildren() will be called later if it's from the parser,
// otherwise it is

4
content/html/content/src/HTMLSharedElement.h
View File

@@ -32,6 +32,10 @@ public:
HTMLSharedElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
if (mNodeInfo->Equals(nsGkAtoms::head) ||
mNodeInfo->Equals(nsGkAtoms::html)) {
SetHasWeirdParserInsertionMode();
}
}
virtual ~HTMLSharedElement();

1
content/html/content/src/HTMLTableCaptionElement.h
View File

@@ -19,6 +19,7 @@ public:
HTMLTableCaptionElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
SetHasWeirdParserInsertionMode();
}
virtual ~HTMLTableCaptionElement();

1
content/html/content/src/HTMLTableCellElement.h
View File

@@ -23,6 +23,7 @@ public:
HTMLTableCellElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
SetHasWeirdParserInsertionMode();
}
virtual ~HTMLTableCellElement();

1
content/html/content/src/HTMLTableColElement.h
View File

@@ -17,6 +17,7 @@ public:
HTMLTableColElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
SetHasWeirdParserInsertionMode();
}
virtual ~HTMLTableColElement();

1
content/html/content/src/HTMLTableElement.cpp
View File

@@ -286,6 +286,7 @@ HTMLTableElement::HTMLTableElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo),
mTableInheritedAttributes(TABLE_ATTRS_DIRTY)
{
SetHasWeirdParserInsertionMode();
}
HTMLTableElement::~HTMLTableElement()

1
content/html/content/src/HTMLTableRowElement.h
View File

@@ -22,6 +22,7 @@ public:
HTMLTableRowElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
SetHasWeirdParserInsertionMode();
}
NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLTableRowElement, tr)

1
content/html/content/src/HTMLTableSectionElement.h
View File

@@ -18,6 +18,7 @@ public:
HTMLTableSectionElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
SetHasWeirdParserInsertionMode();
}
// nsISupports

1
content/html/content/src/HTMLTemplateElement.cpp
View File

@@ -33,6 +33,7 @@ namespace dom {
HTMLTemplateElement::HTMLTemplateElement(already_AddRefed<nsINodeInfo> aNodeInfo)
: nsGenericHTMLElement(aNodeInfo)
{
SetHasWeirdParserInsertionMode();
}
nsresult