Note that in all cases it was either nullptr or ctx.getLazyResolver().
While passing in nullptr might appear at first glance to mean something
("don't type check anything"), in practice we would check for a nullptr
value and pull out ctx.getLazyResolver() instead. Furthermore, with
the lazy resolver going away (at least for resolveDeclSignature() calls),
it won't make sense to do that anymore anyway.
PatternBindingInitializer may not be attached to any
PatternBindingDecl. e.g.
struct S {
@CustomAttr(something)
}
In this case DeclContext for 'something' is PatternBindingInitializer,
but it doesn't have PatternBindingDecl because it's not written yet.
Fixes a crash in code-completion.
rdar://problem/53034550
If there are no braces, the start and end location of the range is
the same token. When performing a lookup at this token's location,
don't consider it to be "inside" the braces.
NFC for now, but this problem causes some tests to fail once we
enable cycle diagnostics.
This is an attribute that gets put on an import in library FooKit to
keep it from being a requirement to import FooKit. It's not checked at
all, meaning that in this form it is up to the author of FooKit to
make sure nothing in its API or ABI depends on the implementation-only
dependency. There's also no debugging support here (debugging FooKit
/should/ import the implementation-only dependency if it's present).
The goal is to get to a point where it /can/ be checked, i.e. FooKit
developers are prevented from writing code that would rely on FooKit's
implementation-only dependency being present when compiling clients of
FooKit. But right now it's not.
rdar://problem/48985979
...in preparation for me adding a third kind of import, making the
existing "All" kind a problem. NFC, except that I did rewrite the
ClangModuleUnit implementation of getImportedModules to be simpler!
