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Issue #2158 - Part 3: Parse preload links as part of the HTML5 parser's speculative load queue

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FranklinDM 2023-03-11 15:41:00 +08:00 • committed by roytam1
commit b0d2af4e01
1 changed files with 48 additions and 0 deletions
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48
parser/html/nsHtml5TreeBuilderCppSupplement.h
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@ -230,6 +230,54 @@ nsHtml5TreeBuilder::createElement(int32_t aNamespace,
mSpeculativeLoadQueue.AppendElement()->InitPreconnect(
url, crossOrigin);
}
} else if (rel.LowerCaseEqualsASCII("preload")) {
nsHtml5String url =
aAttributes->getValue(nsHtml5AttributeName::ATTR_HREF);
if (url) {
nsHtml5String preloadAs =
aAttributes->getValue(nsHtml5AttributeName::ATTR_AS);
if (preloadAs.LowerCaseEqualsASCII("script")) {
nsHtml5String charset =
aAttributes->getValue(nsHtml5AttributeName::ATTR_CHARSET);
nsHtml5String type =
aAttributes->getValue(nsHtml5AttributeName::ATTR_TYPE);
nsHtml5String crossOrigin =
aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
nsHtml5String integrity =
aAttributes->getValue(nsHtml5AttributeName::ATTR_INTEGRITY);
mSpeculativeLoadQueue.AppendElement()->InitScript(
url,
charset,
type,
crossOrigin,
integrity,
mode == nsHtml5TreeBuilder::IN_HEAD,
false,
false,
false);
mCurrentHtmlScriptIsAsyncOrDefer = false;
} else if (preloadAs.LowerCaseEqualsASCII("style")) {
nsHtml5String charset =
aAttributes->getValue(nsHtml5AttributeName::ATTR_CHARSET);
nsHtml5String crossOrigin =
aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
nsHtml5String integrity =
aAttributes->getValue(nsHtml5AttributeName::ATTR_INTEGRITY);
mSpeculativeLoadQueue.AppendElement()->InitStyle(
url, charset, crossOrigin, integrity);
} else if (preloadAs.LowerCaseEqualsASCII("image")) {
nsHtml5String srcset =
aAttributes->getValue(nsHtml5AttributeName::ATTR_SRCSET);
nsHtml5String crossOrigin =
aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
nsHtml5String referrerPolicy =
aAttributes->getValue(nsHtml5AttributeName::ATTR_REFERRERPOLICY);
nsHtml5String sizes =
aAttributes->getValue(nsHtml5AttributeName::ATTR_SIZES);
mSpeculativeLoadQueue.AppendElement()->InitImage(
url, crossOrigin, referrerPolicy, srcset, sizes);
}
}
}
}
} else if (nsHtml5Atoms::video == aName) {