PTHLexer:
- Rename 'CurToken' and 'LastToken' to 'CurTokenIdx' and 'LastTokenIdx'
  respectively.
- Add helper methods GetToken(), AdvanceToken(), AtLastToken() to abstract away
  details of the token stream. This also allows us to easily replace their
  implementation later.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59733 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed