Commits
Jordan Rose committed ebdee214640
Handle top-level vars' and closure params' access specially.
Parameters are normally given 'private' access, because they can only
be referred to within the body of the owning function. However,
single-expression closures allow a parameter to appear in a constraint
system in the containing context. Mark closure parameters as
'fileprivate' instead.
Similarly, 'private' at the top level is normally equivalent to
'fileprivate', but not for a decl that appears within top-level
imperative code, which has a TopLevelCodeDecl context. This currently
only happens for bindings in a top-level 'guard' statement; mark
these variables and constants as 'fileprivate' as well.
More progress on SE-0025 ('private' and 'fileprivate').