Make changes to PCHReader to allow reading a PCH file without having a pre-initialized Preprocessor.
-Introduce 'PCHReaderListener' which is an abstract interface for getting various information from the PCHReader.
-If PCHReader is constructed without a Preprocessor, it can still load the file and invoke the callbacks of PCHReaderListener.
-If PCHReader is constructed with an initialized Preprocessor, PCHValidator is used as a PCHReaderListener to validate the contents of the PCH file against the given Preprocessor.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73741 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed