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3 Commits

Author SHA1 Message Date
Argyrios Kyrtzidis
bd024c7fdb Change line endings: CRLF -> LF 
llvm-svn: 55235
 2008-08-23 12:05:53 +00:00
Argyrios Kyrtzidis
a65490c5df Allow nested backtracks. 
llvm-svn: 55204
 2008-08-22 21:27:50 +00:00
Argyrios Kyrtzidis
b3dd1e0889 Allow the preprocessor to cache the lexed tokens, so that we can do efficient lookahead and backtracking. 
1) New public methods added:
  -EnableBacktrackAtThisPos
  -DisableBacktrack
  -Backtrack
  -isBacktrackEnabled

2) LookAhead() implementation is replaced with a more efficient one.
3) LookNext() is removed.

llvm-svn: 54611
 2008-08-10 13:15:22 +00:00