* [cxx-interop] Add Hashable conformance to imported enums
Previously, imported enums only conformed to RawRepresentable and Equatable,
so they could not be used as members of a Set or keys of a Dictionary.
This patch adds Hashable conformance to give them that ability,
as well as some test cases to clarify the expected behavior.
Existing test cases are updated to reflect this new conformance.
rdar://129713687
For now, this logic is used for importing fewer unannotated types as
unsafe. In the future, this logic will be used by escapability inference
for other (non-aggregate) types.
In this mode all C++ types are imported as unsafe by default. Users
explicitly marking types are escapable or not escapable can make them
imported as safe. In the future, we also want to import unannotated
functions as unsafe and add more logic to infer types that are actually
safe, like agregates of escapable types.
ModuleDecl kept track of all of the source files in the module so that it
could find the source file containing a given location, which relied on
a sorted array all of these source files. SourceManager has its own
similar data structure for a similar query mapping the locations to
buffer IDs.
Replace ModuleDecl's dats structure with a use of the SourceManager's version
with the mapping from buffer IDs to source files.
The lifetimebound annotations are now imported as lifetime dependencies.
This works for basic cases but there are still some parts missing:
* Support lifeitmebound annotations on constructors
* A way to represent immortal/static lifetimes on the C++ side
When rendering a swift_attr attribute for parsing, we were creating both
the backing buffer and a source file, but not providing the buffer's ID
to the source file, so we couldn't find the source code again. Fix that.
While here, also register the source file with the module, so we can
find the source file again based on location.
The generality of the `AvailabilityContext` name made it seem like it
encapsulates more than it does. Really it just augments `VersionRange` with
additional set algebra operations that are useful for availability
computations. The `AvailabilityContext` name should be reserved for something
pulls together more than just a single version.
This change fixes a swift-ide-test crash that occured in the Interop\Cxx\stdlib\msvcprt-module-interface.swift testcase with a newer MSVC, as one of its operator() had a parameter with a type that couldn't have been imported. The change ensures that body params are not used if they're null.
Some requirement machine work
Rename requirement to Value
Rename more things to Value
Fix integer checking for requirement
some docs and parser changes
Minor fixes
