Hi Jordan,
thanks for your advice. It took me a while to get through the
LibTooling. By mostly copying the code from your link, i wrote up a few
lines of code. However since i am just setting up for testing, I have
not gotten around to test this yet.
However i have a few questions: buildCFG takes four parameters:
- a Decl
- a Stmt
- an ASTContext
- buildOptions
To be honest i am not exactly clear on what is what here.
I called it like this:
myCFG = CFG::buildCFG(inFile, getBody(), *Context, cfgBuildOptions);
which i mostly copied from
http://clang.llvm.org/doxygen/AnalysisDeclContext_8cpp_source.html#l00179
I will append my current code. You will notice that i am fairly novice
in terms of coding. Please excuse any blatant mistakes.
Best regards,
Viktor
Am 19.03.2014 17:47, schrieb Jordan Rose:
Both DumpCFG and ViewCFG are meant as debug tools for working on the
Clang static analyzer; in particular, the way the CFG is built for the
analyzer may not match your needs.
If you are willing to write your own tool based on Clang's C++
interface, you can get a parsed AST
<http://clang.llvm.org/docs/RAVFrontendAction.html> and then ask for the
CFG of any particular function using CFG::buildCFG. Note, though that
the C++ API is not stable from release to release.
Jordan
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendAction.h"
#include "clang/Tooling/Tooling.h"
using namespace clang;
class FindCFGConsumer : public ASTConsumer {
public:
explicit FindCFGConsumer(ASTContext *Context)
{ }
virtual void HandleTranslationUnit(ASTContext &Context) {
myCFG = CFG::buildCFG(inFile, getBody(), *Context, cfgBuildOptions);
}
}
class FindCFGFrontendAction : public clang::ASTFrontendAction {
public:
virtual clang::ASTConsumer *CreateASTConsumer(
clang::CompilerInstance &Compiler, llvm::StringRef InFile) {
return new FindCFGConsumer(&Compiler.getASTContext());
}
};
int main(int argc, const char **argv) {
clang::tooling::runToolOnCode(new FindCFGFrontendAction, argv[1]);
}_______________________________________________
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