[cfe-dev] Automating Clang Tool (with CommonOptionsParser)

[Sunny Billava via cfe-dev]

Thanks Alex!!
This worked! : ) Awesome.

Regards,
Sunny. R. Billava

From: Alex L [mailto:arphaman at gmail.com]
Sent: Wednesday, December 7, 2016 7:36 PM
To: Sunny Billava <Sunny.Billava at kpit.com>
Cc: cfe-dev at lists.llvm.org
Subject: Re: [cfe-dev] Automating Clang Tool (with CommonOptionsParser)



On 7 December 2016 at 13:52, Sunny Billava via cfe-dev <cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>> wrote:
Hello All,
We want to create a tool (in C# .NET, EXE) which invokes the clang tool (C++, DLL). While implementing we realized that the CommonOptionsParser only expects the call to the Clang tool to be in the form of command line options. Is there a way around this issue that someone has encountered earlier?

On the other hand, if I pass the c code as a string buffer to the tooling, the included .h files are not recognized by clang tooling. So somehow Common Options Parser was the choice.

int main(int argc, const char **argv) {

CommonOptionsParser OptionsParser(argc, argv, MyToolCategory);
       ClangTool Tool(OptionsParser.getCompilations(),OptionsParser.getSourcePathList());

       int result = Tool.run(newFrontendActionFactory<DFAMainClassAction>().get());
return result;
}

Any help would be greatly appreciated ☺

I think that you can use pass the arguments as an array of strings to your DLL and create the tool using the FixedCompilationDatabase, like in the example below:

   std::vector<std::string> CommandLineArguments = { "-I", "includes" }; // Get the arguments
   // Create the tool
   std::unique_ptr<CompilationDatabase> Compilations(new FixedCompilationDatabase(".", CommandLineArguments));
   ClangTool Tool(*Compilations, Filename);


Regards,
Sunny. R. Billava

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