Pull out LazyLineBreakIterator's prior context handling into a separate class

[litherum]

b5583c5

Pull out LazyLineBreakIterator's prior context handling into a separate class
https://bugs.webkit.org/show_bug.cgi?id=257115
rdar://109646131

Reviewed by Yusuke Suzuki.

LazyLineBreakIterator is really a factory, which holds the necessary parameters to
create line break iterators. But, it also has a bunch of handling for a "prior context"
which is conceptually a prefix to the string being broken.

This patch isn't strictly necessary, but I thought it would be a bit more elegant to
have a class separation between the two pieces of LazyLineBreakIterator.

* Source/WTF/wtf/text/TextBreakIterator.h:
(WTF::LazyLineBreakIterator::PriorContext::PriorContext):
(WTF::LazyLineBreakIterator::PriorContext::lastCharacter const):
(WTF::LazyLineBreakIterator::PriorContext::secondToLastCharacter const):
(WTF::LazyLineBreakIterator::PriorContext::set):
(WTF::LazyLineBreakIterator::PriorContext::update):
(WTF::LazyLineBreakIterator::PriorContext::reset):
(WTF::LazyLineBreakIterator::PriorContext::length const):
(WTF::LazyLineBreakIterator::PriorContext::characters const):
(WTF::LazyLineBreakIterator::LazyLineBreakIterator):
(WTF::LazyLineBreakIterator::get):
(WTF::LazyLineBreakIterator::resetStringAndReleaseIterator):
(WTF::LazyLineBreakIterator::priorContext const):
(WTF::LazyLineBreakIterator::priorContext):
(WTF::TextBreakIteratorCache::TextBreakIteratorCache): Deleted.
(WTF::LazyLineBreakIterator::lastCharacter const): Deleted.
(WTF::LazyLineBreakIterator::secondToLastCharacter const): Deleted.
(WTF::LazyLineBreakIterator::setPriorContext): Deleted.
(WTF::LazyLineBreakIterator::updatePriorContext): Deleted.
(WTF::LazyLineBreakIterator::resetPriorContext): Deleted.
(WTF::LazyLineBreakIterator::priorContextLength const): Deleted.
* Source/WebCore/layout/formattingContexts/inline/InlineLineBuilder.cpp:
(WebCore::Layout::endsWithSoftWrapOpportunity):
* Source/WebCore/rendering/BreakLines.h:
(WebCore::nextBreakablePosition):
* Source/WebCore/rendering/LegacyLineLayout.cpp:
(WebCore::LegacyLineLayout::layoutRunsAndFloatsInRange):
* Source/WebCore/rendering/RenderRubyBase.cpp:
(WebCore::RenderRubyBase::cachePriorCharactersIfNeeded):
* Source/WebCore/rendering/RenderRubyRun.cpp:
(WebCore::RenderRubyRun::updatePriorContextFromCachedBreakIterator const):
* Source/WebCore/rendering/RenderRubyText.cpp:
(WebCore::RenderRubyText::canBreakBefore const):
* Source/WebCore/rendering/line/BreakingContext.h:
(WebCore::BreakingContext::handleOutOfFlowPositioned):
(WebCore::BreakingContext::handleFloat):
(WebCore::BreakingContext::handleReplaced):
(WebCore::BreakingContext::handleText):

Canonical link: https://commits.webkit.org/264444@main

cca0ce9

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

[webkit-early-warning-system]

EWS run on previous version of this PR (hash dc0e4a2)

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

[webkit-early-warning-system]

EWS run on previous version of this PR (hash a533a27)

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

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 58638dc)

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

[webkit-early-warning-system]

EWS run on current version of this PR (hash cca0ce9)

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

[Constellation]

r=me

[webkit-commit-queue]

Committed 264444@main (b5583c5): https://commits.webkit.org/264444@main

Reviewed commits have been landed. Closing PR #14169 and removing active labels.