lh123 marked an inline comment as done.
lh123 added inline comments.
================
Comment at: clang/lib/Tooling/ExpandResponseFilesCompilationDatabase.cpp:167
+ for (auto &Cmd : Cmds) {
+ expandResponseFiles(Cmd, Tokenizer);
+ }
----------------
lh123 wrote:
> kadircet wrote:
> > so it looks like we already have `ExpandResponseFiles` exposed in
> > `llvm/include/llvm/Support/CommandLine.h` could you make use of it in here
> > instead of re-implementing it again?
> >
> > I see that it has a different signature, but we can do the conversion back
> > and forth in here, going from `std::string` to `char*` is cheap anyways,
> > coming back is expensive though, and we can limit that to iff we have seen
> > an argument starting with an `@`. So this would be something like:
> >
> > ```
> > llvm::SmallVector<const char*, 20> Argvs;
> > Argvs.reserve(Cmd.CommandLine.size());
> > bool SeenRSPFile = false;
> > for(auto &Argv : Cmd.CommandLine) {
> > Argvs.push_back(Argv.c_str());
> > SeenRSPFile |= Argv.front() == '@';
> > }
> > if(!SeenRSPFile)
> > continue;
> >
> > // call ExpandResponseFiles with Argvs, convert back to vector<std::string>
> > and assign to Cmd.CommandLine
> > ```
> I think it's not easy to reuse `ExpandResponseFiles` without changing code
> because it uses llvm::sys::fs::current_path to resolve relative paths.
>
> In fact, most of the code here is copied from `CommandLine`
But we can reuse `static bool ExpandResponseFile(StringRef FName, StringSaver
&Saver, TokenizerCallback Tokenizer, SmallVectorImpl<const char *> &NewArgv,
bool MarkEOLs, bool RelativeNames)` if we expose it in `CommandLine.h`
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D70222/new/
https://reviews.llvm.org/D70222
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