tree 9113a442ca504710327186177decaccd36568d13
parent 207014eb2b372aa33721e86d90a8a586ba8dc8ae
author Argyrios Kyrtzidis <akyrtzi@gmail.com> 1280484196 +0000
committer Argyrios Kyrtzidis <akyrtzi@gmail.com> 1280484196 +0000

Refactor the way PCHReader tracks whether we are in recursive loading.

-Replace CurrentlyLoadingTypeOrDecl with a counting scheme (NumCurrentElementsDeserializing)
-Provide outside access to the mechanism by adding methods StartedDeserializing/FinishedDeserializing
  to ExternalASTSource.

These are preparation for the next commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109856 91177308-0d34-0410-b5e6-96231b3b80d8