Allow using a = b in *.serialization.in files

[achristensen07]

e7b14b5

Allow using a = b in *.serialization.in files
https://bugs.webkit.org/show_bug.cgi?id=251160

Reviewed by Chris Dumez.

This fixes a shortcut I took in 259180@main.
Expose the information to the IPC testing API as if b contained a,
which is equivalent from the point of view of serialization.
No actual serializers need to be generated.

* Source/WebKit/Scripts/generate-serializers.py:
(generate_serialized_type_info):
(generate_serialized_type_info.in):
(parse_serialized_types):
(main):
(main.in):
* Source/WebKit/Scripts/webkit/tests/SerializedTypeInfo.cpp:
(WebKit::allSerializedTypes):
* Source/WebKit/Scripts/webkit/tests/TestSerializedType.serialization.in:
* Source/WebKit/Shared/WebCoreArgumentCoders.serialization.in:
* Source/WebKit/UIProcess/VisitedLinkStore.messages.in:
* Source/WebKit/WebProcess/WebPage/VisitedLinkTableController.messages.in:

Canonical link: https://commits.webkit.org/259383@main

5823253

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	🛠 ios	🛠 mac	🛠 wpe	🛠 🧪 win
🧪 bindings	🛠 ios-sim	🛠 mac-AS-debug	🛠 gtk	🛠 wincairo
✅ 🧪 webkitperl	🧪 ios-wk2	🧪 api-mac	🧪 gtk-wk2
🧪 webkitpy	🧪 api-ios	🧪 mac-wk1	🧪 api-gtk
🛠 🧪 jsc	🛠 tv	🧪 mac-wk2	🛠 jsc-armv7
🛠 🧪 jsc-arm64	🛠 tv-sim	🧪 mac-AS-debug-wk2	🧪 jsc-armv7-tests
🧪 services	🛠 watch	🧪 mac-wk2-stress	✅ 🛠 jsc-mips
	🛠 watch-sim		🧪 jsc-mips-tests
✅ 🛠 🧪 unsafe-merge

[cdumez]

Yes, this is nicer I think.

[cdumez]

Note that the previous serialization logic didn't even need this typedef/alias iirc. This is better than rewriting the typedef as a struct but ideally we wouldn't even need this alias in the serialization.in and we'd let the generated code figure out that SharedStringHash is a typedef to uint32_t simply by including the SharedStringHash.h header.

[achristensen07]

I don't think that's possible until C++ reflection becomes part of the language. The metadata needs to be strings "WebCore::SharedStringHash" and "uint32_t". Until then, I think this is the minimum amount of metadata needed.

[webkit-commit-queue]

Committed 259383@main (e7b14b5): https://commits.webkit.org/259383@main

Reviewed commits have been landed. Closing PR #9127 and removing active labels.

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 030d972)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	🛠 🧪 win
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	🛠 gtk	⏳ 🛠 wincairo
✅ 🧪 webkitperl	🧪 ios-wk2	✅ 🧪 api-mac	🧪 gtk-wk2
⏳ 🧪 webkitpy	✅ 🧪 api-ios	🧪 mac-wk1	🧪 api-gtk
⏳ 🛠 🧪 jsc	✅ 🛠 tv	✅ 🧪 mac-wk2	✅ 🛠 jsc-armv7
⏳ 🛠 🧪 jsc-arm64	✅ 🛠 tv-sim	🧪 mac-AS-debug-wk2	✅ 🧪 jsc-armv7-tests
⏳ 🧪 services	✅ 🛠 watch	✅ 🧪 mac-wk2-stress	✅ 🛠 jsc-mips
	⏳ 🛠 watch-sim		🧪 jsc-mips-tests

[webkit-early-warning-system]

EWS run on current version of this PR (hash 5823253)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	🛠 ios	🛠 mac	🛠 wpe	🛠 🧪 win
🧪 bindings	🛠 ios-sim	🛠 mac-AS-debug	🛠 gtk	🛠 wincairo
✅ 🧪 webkitperl	🧪 ios-wk2	🧪 api-mac	🧪 gtk-wk2
🧪 webkitpy	🧪 api-ios	🧪 mac-wk1	🧪 api-gtk
🛠 🧪 jsc	🛠 tv	🧪 mac-wk2	🛠 jsc-armv7
🛠 🧪 jsc-arm64	🛠 tv-sim	🧪 mac-AS-debug-wk2	🧪 jsc-armv7-tests
🧪 services	🛠 watch	🧪 mac-wk2-stress	✅ 🛠 jsc-mips
	🛠 watch-sim		🧪 jsc-mips-tests
✅ 🛠 🧪 unsafe-merge