Rename WebCore::findHTMLTag to findTag and extend it to find SVG and MathML tags

[heycam]

fdf12c1

Rename WebCore::findHTMLTag to findTag and extend it to find SVG and MathML tags
https://bugs.webkit.org/show_bug.cgi?id=244020
rdar://problem/98767683

Reviewed by NOBODY (OOPS!).

We currently generate the WebCore::findHTMLTag function and use this in the
AtomHTMLToken constructor. We can extend this to look for any known tag name
(HTML, SVG, or MathML) by reworking make-names.pl a bit.

This isn't helpful for Speedometer performance, since parsing non-HTML tags is
rare, but local testing shows it to be a neutral change. Handling all known tag
names will set the stage for a later patch that does improve Speedometer
performance.

We generate a new pair of files, KnownTag.h and KnownTag.cpp, move the
old findHTMLTag function there, and rename it to findTag.

* Source/WebCore/CMakeLists.txt:
* Source/WebCore/DerivedSources-output.xcfilelist:
* Source/WebCore/DerivedSources.make:
* Source/WebCore/WebCore.xcodeproj/project.pbxproj:
* Source/WebCore/WebCoreMacros.cmake:

Build system changes to invoke make_names.pl to generate
KnownTag.{h,cpp}.

* Source/WebCore/dom/make_names.pl:
(readKnownTags):

Read a list of tag name files. Any duplicate tag name found in a
subsequent file is ignored (e.g. the SVG script tag will be ignored if
the HTML tag name file is parsed first). Since the %parameters hash
doesn't make much sense when parsing multiple files, it's cleared out
by the end of the function, but the namespace for each tag (which comes
from the parameters object) is recorded on the tag object.

(printNamesHeaderFile):
(printNamesCppFile):

Remove the findHTMLTag generation from generated HTMLNames.{h,cpp} etc.

(printKnownTagsHeaderFile):
(printKnownTagsCppFile):

Generated findTag in KnownTag.{h,cpp}. Use the namespace stored on the
tag object to decide the QualifiedName on which to look up the local
name.

(findMaxTagLength): Just refer to the global %allTags variable, like other
functions do.

(tagsWithLength): Simplify.

(generateFindTagForLength): We need to replace "_"s with "-"s when generating
the big switch statement, since the tag names it's operating on have already
been converted into identifiers.

* Source/WebCore/html/parser/AtomHTMLToken.h:
(WebCore::AtomHTMLToken::AtomHTMLToken):

Call the new findTag function.

fdf12c1

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 api-mac	✅ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-wk1
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2
	✅ 🛠 watch	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim	✅ 🧪 mac-wk2-stress

[heycam]

Not sure if I've got the cmake changes right. Let's see what the bots say.

[webkit-early-warning-system]

fdf12c1

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
🧪 style	⏳ 🛠 ios	⏳ 🛠 mac	⏳ 🛠 wpe	⏳ 🛠 🧪 win
⏳ 🧪 bindings	⏳ 🛠 ios-sim	⏳ 🛠 mac-debug	⏳ 🛠 gtk	⏳ 🛠 wincairo
🧪 webkitperl	⏳ 🧪 ios-wk2	⏳ 🛠 mac-AS-debug	⏳ 🧪 api-gtk
	⏳ 🧪 api-ios	⏳ 🧪 api-mac
🧪 services	⏳ 🛠 tv	⏳ 🧪 mac-wk1
	⏳ 🛠 tv-sim	⏳ 🧪 mac-wk2
	⏳ 🛠 watch	⏳ 🧪 mac-AS-debug-wk2
	⏳ 🛠 watch-sim

[webkit-early-warning-system]

fdf12c1

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 api-mac	✅ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-wk1
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2
	✅ 🛠 watch	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim	✅ 🧪 mac-wk2-stress

[webkit-early-warning-system]

EWS run on previous version of this PR (hash e7e9bf4)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	❌ 🛠 wpe	❌ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-debug	❌ 🛠 gtk	❌ 🛠 wincairo
✅ 🧪 webkitperl	❌ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	❌ 🧪 api-gtk
	🧪 api-ios	✅ 🧪 api-mac
	✅ 🛠 tv	✅ 🧪 mac-wk1
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2
	✅ 🛠 watch	🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on previous version of this PR (hash e7e9bf4)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	❌ 🛠 wpe	❌ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-debug	❌ 🛠 gtk	❌ 🛠 wincairo
✅ 🧪 webkitperl	❌ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	❌ 🧪 api-gtk
	🧪 api-ios	✅ 🧪 api-mac
	✅ 🛠 tv	✅ 🧪 mac-wk1
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2
	✅ 🛠 watch	🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 67070d4)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	⏳ 🛠 mac	❌ 🛠 wpe	⏳ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	⏳ 🛠 mac-debug	⏳ 🛠 gtk	⏳ 🛠 wincairo
✅ 🧪 webkitperl	🧪 ios-wk2	⏳ 🛠 mac-AS-debug	⏳ 🧪 api-gtk
	🧪 api-ios	⏳ 🧪 api-mac
	⏳ 🛠 tv	⏳ 🧪 mac-wk1
	✅ 🛠 tv-sim	⏳ 🧪 mac-wk2
	✅ 🛠 watch	⏳ 🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 67070d4)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	⏳ 🛠 mac	❌ 🛠 wpe	⏳ 🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	⏳ 🛠 mac-debug	⏳ 🛠 gtk	⏳ 🛠 wincairo
✅ 🧪 webkitperl	🧪 ios-wk2	⏳ 🛠 mac-AS-debug	⏳ 🧪 api-gtk
	🧪 api-ios	⏳ 🧪 api-mac
	⏳ 🛠 tv	⏳ 🧪 mac-wk1
	✅ 🛠 tv-sim	⏳ 🧪 mac-wk2
	✅ 🛠 watch	⏳ 🧪 mac-AS-debug-wk2
	✅ 🛠 watch-sim

[heycam]

Cancelling review for now; I think the new findTag function needs to work on all lowercase tag names (like "foreignobject").