This was the motivation of the following changes:
-'TentativeParsingResult' enum is replaced by a 'TPResult' class that basically encapsulates the enum.
-TPR_true, TPR_false, TPR_ambiguous, and TPR_error enum constants are replaced by TPResult::True(), TPResult::False(), etc. calls that return a TPResult object.
-Also fixed the subtle bug in Parser::isCXXFunctionDeclarator (caught by the above changes as a compilation error).
llvm-svn: 57125
'ParseTentative.cpp' implements the functionality needed to resolve ambiguous C++ statements, to either a declaration or an expression, by "tentatively parsing" them.
llvm-svn: 57084