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testClangAPI.cpp
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testClangAPI.cpp
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//
// Created by pgess on 4/16/15.
//
#include "gtest/gtest.h"
#include <llvm/IR/DerivedTypes.h>
#include "clang/Driver/Options.h"
#include "clang/AST/AST.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/Frontend/ASTConsumers.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Tooling.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/CodeGen/CodeGenAction.h"
#include "/private/prg/vendors/clang/lib/CodeGen/CodeGenTypes.h"
#include "/private/prg/vendors/clang/lib/CodeGen/CodeGenModule.h"
#include "clang/CodeGen/CodeGenABITypes.h"
#include "llvm/IR/LLVMContext.h"
#include "clang/Basic/TargetInfo.h"
#include <QString>
using namespace std;
using namespace clang;
using namespace clang::driver;
using namespace clang::tooling;
using namespace clang::ast_matchers;
using namespace llvm;
/*
class PrintFunctionsConsumer : public ASTConsumer {
public:
bool HandleTopLevelDecl(DeclGroupRef DG) override {
for (DeclGroupRef::iterator i = DG.begin(), e = DG.end(); i != e; ++i) {
const Decl *D = *i;
if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
llvm::errs() << "top-level-decl: \"" << ND->getNameAsString() << "\"\n";
}
return true;
}
};
class PFAction : public ASTFrontendAction {
public:
virtual std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, StringRef file) {
return llvm::make_unique<PrintFunctionsConsumer>();
}
};
*/
class PrinterType : public MatchFinder::MatchCallback {
public :
virtual void run(const MatchFinder::MatchResult &Result) {
ASTContext* C = Result.Context;
llvm::Module* M = new llvm::Module("module1", llvm::getGlobalContext());
if (const TypedefDecl* decl = Result.Nodes.getNodeAs<clang::TypedefDecl>("typename")) {
QualType Ty = decl->getUnderlyingType();
llvm::errs() << "<" << Ty.getAsString() << ">" ;
CodeGenOptions *CGO = new CodeGenOptions;
const llvm::DataLayout& TD = llvm::DataLayout(C->getTargetInfo().getTargetDescription());
CodeGen::CodeGenModule *CGM = new CodeGen::CodeGenModule(*C, *CGO, *M, TD, C->getDiagnostics());
llvm::Type *rawTy = CGM->getTypes().ConvertType(Ty);
rawTy->dump();
results.push_back(rawTy);
}
}
std::vector<llvm::Type*> results;
};
class PrinterFunction: public MatchFinder::MatchCallback {
public :
virtual void run(const MatchFinder::MatchResult &Result) {
if (const FunctionDecl* decl = Result.Nodes.getNodeAs<clang::FunctionDecl>("function")) {
QualType Ty = decl->getType();
llvm::errs() << "<" << Ty.getAsString() << ">" ;
ASTContext* C = Result.Context;
llvm::Module* M = new llvm::Module("module1", llvm::getGlobalContext());
CodeGenOptions *CGO = new CodeGenOptions;
const llvm::DataLayout& TD = llvm::DataLayout(C->getTargetInfo().getTargetDescription());
CodeGen::CodeGenModule *CGM = new CodeGen::CodeGenModule(*C, *CGO, *M, TD, C->getDiagnostics());
llvm::Type *rawTy = CGM->getTypes().ConvertType(Ty);
//const clang::FunctionType* Ty = decl->getType()->getAs<clang::FunctionType>();
llvm::FunctionType* rawFuncTy = llvm::dyn_cast<llvm::FunctionType>(rawTy);
rawFuncTy->dump();
results.push_back(rawFuncTy);
/*
llvm::Function* fDeclaration = llvm::Function::Create(rawFuncTy, llvm::GlobalValue::ExternalLinkage, "xxxx", M);
fDeclaration->dump();
*/
}
}
std::vector<llvm::Type*> results;
};
vector<string> argv = {
"-I/usr/include/libxml2"
,"-I/usr/local/include"
,"-I/usr/lib/llvm-3.7/bin/../lib/clang/3.7.0/include"
,"-I/usr/bin/../lib/gcc/x86_64-linux-gnu/4.9/include"
,"-I/usr/include/x86_64-linux-gnu"
,"-I/usr/include"
};
TEST(ClangAPI, testExternalType)
{
//,, "-I/usr/include/linux"
// "-cc1", "-emit-pch", "-disable-free", "-disable-llvm-verifier", "-mrelocation-model", "static",
// "-mthread-model", "posix", "-mdisable-fp-elim", "-fmath-errno", "-masm-verbose",
// "-mconstructor-aliases", "-munwind-tables", "-fuse-init-array", "-target-cpu", "x86-64", "-target-linker-version", "2.25",
//"-dwarf-column-info", "-resource-dir", "/usr/lib/llvm-3.7/bin/../lib/clang/3.7.0",
//"clang", "--",
/*
int argc= argv.size();
llvm::cl::OptionCategory cat("aaaa");
LLVMInitializeNativeTarget();
CommonOptionsParser op(argc, &*(argv.begin()), cat);
ClangTool tool(op.getCompilations(), op.getSourcePathList());
*/
auto matcherType =
typedefDecl(hasName("xmlNodePtr")).bind("typename");
MatchFinder finder;
PrinterType printer;
finder.addMatcher(matcherType, &printer);
std::string code = QString("#include \"%1\"").arg("libxml/tree.h").toStdString();
//runToolOnCodeWithArgs(newFrontendActionFactory(&finder).get()->create(), code, argv);
std::unique_ptr<ASTUnit> ast = buildASTFromCodeWithArgs(code, argv);
ASTContext & context = ast->getASTContext();
finder.matchAST(context);
string signatureExpected = "%struct._xmlNode.0*";
ASSERT_EQ(1, printer.results.size());
llvm::Type* tyActual = printer.results.at(0);
string strActual;
llvm::raw_string_ostream ss(strActual);
tyActual->print(ss);
ASSERT_EQ(signatureExpected, ss.str());
//int x = tool.run(newFrontendActionFactory(&finder).get());
}
TEST(ClangAPI, testExternalFunction){
auto matcherType = functionDecl(hasName("arc4random")).bind("function");
MatchFinder finder;
PrinterFunction printer;
finder.addMatcher(matcherType, &printer);
std::string code = QString("#include \"%1\"").arg("bsd/stdlib.h").toStdString();
std::unique_ptr<ASTUnit> ast = buildASTFromCodeWithArgs(code, argv);
ASTContext & context = ast->getASTContext();
finder.matchAST(context);
string signatureExpected = "i32 ()";
ASSERT_EQ(1, printer.results.size());
llvm::Type* tyActual = printer.results.at(0);
string strActual;
llvm::raw_string_ostream ss(strActual);
tyActual->print(ss);
ASSERT_EQ(signatureExpected, ss.str());
}
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