[cfe-dev] [Patch] Make ParseAST() take ASTContext and TU params

[Alexei Svitkine]

Hi,

Attached is a patch to make ParseAST() take ASTContext and
TranslationUnit as parameters, as suggested by Steve Naroff.

This makes the FreeMemory parameter obsolete, so it is removed.

The motivation is that clients are now responsible for owning those
objects, and are also able to free them themselves, rather than
leaking memory like before (when FreeMemory was false).

I've made the new parameters default to 0, and if they are null then
ParseAST will allocate them on its own and dispose of them after (the
same functionality as when FreeMemory was false previously).

-Alexei
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