Dumping Clang AST to a file

[Aaron Ballman via cfe-commits]

On Tue, Jul 9, 2019 at 8:11 AM Monalisa Rout via cfe-commits
<cfe-commits at lists.llvm.org> wrote:
>
> Hello, Currently I am dumping the Clang AST to the console but I want to write it to a file.
>
> I have pasted the code snippet.
>
> bool HandleTopLevelDecl(DeclGroupRef DR) override {
> for (DeclGroupRef::iterator b = DR.begin(), e = DR.end(); b != e; ++b) {
> (*b)->dump(llvm::errs(), false,clang::ADOF_JSON);
> }
> return true;
> }
>
> How this can be done ?? Any help is appreciated.

You are currently using llvm::errs() as the output stream for dumping.
To dump to a file, you would want to use a raw_fd_ostream object
(raw_ostream.h) instead.

HTH!

~Aaron

>
> Regards,
> Mona
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