2 Commits

Author	SHA1	Message	Date
David Farler	12ff3794bc	[Migrator] Don't run AST passes when in Swift 4 or later ... AST passes assume that you are migrating from a version earlier than Swift 4, where declaration references and type names may be unconditionally renamed if their USRs match. For example, this can happen for TypeMemberDiffItem entries where the Objective-C USR is the same in Swift 3 and Swift 4, but the type is spelled differently in Swift 4. A concrete example of this is: `NSDocumentTypeDocumentAttribute` (Swift 3) -> `NSAttributedString.DocumentAttributeKey` (Swift 4). Although this declaration is imported differently in Swift 4, its Objective-C USR is `c:@NSDocumentTypeDocumentAttribute` for both. rdar://problem/32604558	2017-06-23 14:04:07 -07:00
David Farler	e55191f7d5	[Migrator] Don't take redundant replacements during AST Passes ... We already had this functionality in the FixitApplyDiagnosticConsumer, but we also need it in the AST passes because different entries in the API diff data may drive identical fix-its, namely a general type rename, which can occur anywhere a DeclRef appears, but also for function overrides' parameter type changes, which are context specific. rdar://problem/32431533	2017-06-14 14:21:51 -07:00