[arcmt] Add some additional driver flags to optionally emit or save the pre-migration ARC errors.

-arcmt-migrate-emit-errors : Emits the pre-migration ARC errors but it doesn't affect anything else
-arcmt-migrate-report-output : Writes out the pre-migration ARC errors to the provided plist file

rdar://9791454

llvm-svn: 135491

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/lib/ARCMigrate/Internals.h b/clang/lib/ARCMigrate/Internals.h
index 5fdfca9ef8e..acbb0a56b6f 100644
--- a/clang/lib/ARCMigrate/Internals.h
+++ b/clang/lib/ARCMigrate/Internals.h
@@ -32,8 +32,16 @@ public:
   void reportDiagnostics(Diagnostic &diags) const;
 
   bool hasErrors() const;
+
+  typedef ListTy::const_iterator iterator;
+  iterator begin() const { return List.begin(); }
+  iterator end()   const { return List.end();   }
 };
 
+void writeARCDiagsToPlist(const std::string &outPath,
+                          llvm::ArrayRef<StoredDiagnostic> diags,
+                          SourceManager &SM, const LangOptions &LangOpts);
+
 class TransformActions {
   Diagnostic &Diags;
   CapturedDiagList &CapturedDiags;