While the decls being printed for header file generated interfaces were mapped
from the top-level clang decls in that file, the Swift decls they correspond to
may not be top-level. E.g. top-level functions in the header file can be mapped
to property accessors on the Swift side, which were being printed simply as
"get" at the top level.
This updates header interface generation to map each decl to its top-level decl
before printing.
Resolves rdar://problem/63409659
* A bunch of them require objc_interop because they import code containing
Objective-C.
* Many others fail on Ubuntu 14.04 because the C++ there doesn't have a
functional std::regex implementation which is required by the
`complete-test` tool.
It may be possible to adjust some of these tests in the future to not
need these extra requirements, but this is a straightforward way to
clean up Linux test results for now.
Clang and Swift decls likely have many-to-one mappings; for instance,
a RecordDecl and a TypedefDecl in Clang are both imported as the same Swift
NominalTypeDecl. This commit reduces duplication when we print Clang decls in
Swift. rdar://23275959
The code goes into its own sub-tree under 'tools' but tests go under 'test',
so that running 'check-swift' will also run all the SourceKit tests.
SourceKit is disabled on non-darwin platforms.
