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@@ -0,0 +1,46 @@
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+# HG changeset patch
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+# User Tom Schuster <tschuster@mozilla.com>
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+# Date 1707915342 0
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+# Node ID 12e5815ccf55470884c97422356d765c37aaeb2c
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+# Parent bdeb1b5088193969288d344b7491287e4cc5c5e4
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+Bug 1871112 - Specialize AddAttributes for <html>/<body>. r=hsivonen
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+
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+Differential Revision: https://phabricator.services.mozilla.com/D201562
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+
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+diff --git a/parser/html/nsHtml5TreeOperation.cpp b/parser/html/nsHtml5TreeOperation.cpp
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+--- a/parser/html/nsHtml5TreeOperation.cpp
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++++ b/parser/html/nsHtml5TreeOperation.cpp
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+@@ -298,29 +298,32 @@ nsHtml5TreeOperation::FosterParent(nsICo
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+ return Append(aNode, aParent, aBuilder);
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+ }
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+
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+ nsresult
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+ nsHtml5TreeOperation::AddAttributes(nsIContent* aNode,
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+ nsHtml5HtmlAttributes* aAttributes,
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+ nsHtml5DocumentBuilder* aBuilder)
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+ {
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++ MOZ_ASSERT(aNode->IsAnyOfHTMLElements(nsGkAtoms::body, nsGkAtoms::html));
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++
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+ dom::Element* node = aNode->AsElement();
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+ nsHtml5OtherDocUpdate update(node->OwnerDoc(),
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+ aBuilder->GetDocument());
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+
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+ int32_t len = aAttributes->getLength();
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+ for (int32_t i = len; i > 0;) {
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+ --i;
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+ // prefix doesn't need regetting. it is always null or a static atom
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+ // local name is never null
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+ nsCOMPtr<nsIAtom> localName =
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+ Reget(aAttributes->getLocalNameNoBoundsCheck(i));
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+ int32_t nsuri = aAttributes->getURINoBoundsCheck(i);
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+- if (!node->HasAttr(nsuri, localName)) {
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++ if (!node->HasAttr(nsuri, localName) &&
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++ !(nsuri == kNameSpaceID_None && localName == nsGkAtoms::nonce)) {
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+ // prefix doesn't need regetting. it is always null or a static atom
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+ // local name is never null
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+ nsString value; // Not Auto, because using it to hold nsStringBuffer*
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+ aAttributes->getValueNoBoundsCheck(i).ToString(value);
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+ node->SetAttr(
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+ nsuri, localName, aAttributes->getPrefixNoBoundsCheck(i), value, true);
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+ // XXX what to do with nsresult?
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+ }
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Frank-Rainer Grahl