These modules are part of the experimental declarative string processing feature. If accepted to the Standard Library, _StringProcessing will be available via implicit import just like _Concurrency, though _MatchingEngine will still be hidden as an implementation detail.
`_MatchingEngine` will contain the general-purpose pattern matching engine ISA, bytecode, and executor. `_StringProcessing` will contain regular expression and pattern matching APIs whose implementation depends on the matching engine..
Also consolidates frontend flag `-enable-experimental-regex` as `-enable-experimental-string-processing`.
Resolves rdar://85478647.
`ClangFileRewriterHelper` only outputs the rewritten buffer when it's
destroyed, but the consumers were never being freed. Cleanup the
lifetime management of the stream and consumers so that they're properly
destroyed.
Rename `DuplicatingSourceEditConsumer` to
`BroadcastingSourceEditConsumer` to better describe its purpose.
When adding an async alternative, add the @completionHandlerAsync
attribute to the sync function. Check for this attribute in addition to
the name check, ie. convert a call if the callee has either
@completionHandlerAsync or a name that is completion-handler-like name.
The addition of the attribute is currently gated behind the experimental
concurrency flag.
Resolves rdar://77486504
Instead of leaving two copies of the same implementation, rewrite the old method with the completion handler to call the newly added `async` method.
Resolves rdar://74464833
