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cling/lib/Interpreter/CIFactory.cpp

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//--------------------------------------------------------------------*- C++ -*-
// CLING - the C++ LLVM-based InterpreterG :)
// author: Axel Naumann <axel@cern.ch>
//
// This file is dual-licensed: you can choose to license it under the University
// of Illinois Open Source License or the GNU Lesser General Public License. See
// LICENSE.TXT for details.
//------------------------------------------------------------------------------
#include "cling/Interpreter/CIFactory.h"
#include "ClingUtils.h"
#include "DeclCollector.h"
#include "cling-compiledata.h"
#include "clang/AST/ASTContext.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/Version.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/Job.h"
#include "clang/Driver/Tool.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Frontend/VerifyDiagnosticConsumer.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/SemaDiagnostic.h"
#include "clang/Serialization/ASTReader.h"
#include "llvm/Config/config.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Process.h"
#include <ctime>
#include <cstdio>
#include <memory>
// Include the necessary headers to interface with the Windows registry and
// environment.
#ifdef _MSC_VER
#define WIN32_LEAN_AND_MEAN
#define NOGDI
#define NOMINMAX
#include <Windows.h>
#include <sstream>
#include <direct.h>
#define popen _popen
#define pclose _pclose
#define getcwd_func _getcwd
#pragma comment(lib, "Advapi32.lib")
#else
#include <unistd.h>
#define getcwd_func getcwd
#endif
using namespace clang;
// FIXME: This code has been taken (copied from) llvm/tools/clang/lib/Driver/WindowsToolChain.cpp
// and should probably go to some platform utils place.
// the code for VS 11.0 and 12.0 common tools (vs110comntools and vs120comntools)
// has been implemented (added) in getVisualStudioDir()
#ifdef _MSC_VER
/// \brief Read registry string.
/// This also supports a means to look for high-versioned keys by use
/// of a $VERSION placeholder in the key path.
/// $VERSION in the key path is a placeholder for the version number,
/// causing the highest value path to be searched for and used.
/// I.e. "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\$VERSION".
/// There can be additional characters in the component. Only the numberic
/// characters are compared.
static bool getSystemRegistryString(const char *keyPath, const char *valueName,
char *value, size_t maxLength) {
HKEY hRootKey = NULL;
HKEY hKey = NULL;
const char* subKey = NULL;
DWORD valueType;
DWORD valueSize = maxLength - 1;
long lResult;
bool returnValue = false;
if (strncmp(keyPath, "HKEY_CLASSES_ROOT\\", 18) == 0) {
hRootKey = HKEY_CLASSES_ROOT;
subKey = keyPath + 18;
} else if (strncmp(keyPath, "HKEY_USERS\\", 11) == 0) {
hRootKey = HKEY_USERS;
subKey = keyPath + 11;
} else if (strncmp(keyPath, "HKEY_LOCAL_MACHINE\\", 19) == 0) {
hRootKey = HKEY_LOCAL_MACHINE;
subKey = keyPath + 19;
} else if (strncmp(keyPath, "HKEY_CURRENT_USER\\", 18) == 0) {
hRootKey = HKEY_CURRENT_USER;
subKey = keyPath + 18;
} else {
return false;
}
const char *placeHolder = strstr(subKey, "$VERSION");
char bestName[256];
bestName[0] = '\0';
// If we have a $VERSION placeholder, do the highest-version search.
if (placeHolder) {
const char *keyEnd = placeHolder - 1;
const char *nextKey = placeHolder;
// Find end of previous key.
while ((keyEnd > subKey) && (*keyEnd != '\\'))
keyEnd--;
// Find end of key containing $VERSION.
while (*nextKey && (*nextKey != '\\'))
nextKey++;
size_t partialKeyLength = keyEnd - subKey;
char partialKey[256];
if (partialKeyLength > sizeof(partialKey))
partialKeyLength = sizeof(partialKey);
strncpy(partialKey, subKey, partialKeyLength);
partialKey[partialKeyLength] = '\0';
HKEY hTopKey = NULL;
lResult = RegOpenKeyEx(hRootKey, partialKey, 0, KEY_READ | KEY_WOW64_32KEY,
&hTopKey);
if (lResult == ERROR_SUCCESS) {
char keyName[256];
int bestIndex = -1;
double bestValue = 0.0;
DWORD index, size = sizeof(keyName) - 1;
for (index = 0; RegEnumKeyEx(hTopKey, index, keyName, &size, NULL,
NULL, NULL, NULL) == ERROR_SUCCESS; index++) {
const char *sp = keyName;
while (*sp && !isDigit(*sp))
sp++;
if (!*sp)
continue;
const char *ep = sp + 1;
while (*ep && (isDigit(*ep) || (*ep == '.')))
ep++;
char numBuf[32];
strncpy(numBuf, sp, sizeof(numBuf) - 1);
numBuf[sizeof(numBuf) - 1] = '\0';
double dvalue = strtod(numBuf, NULL);
if (dvalue > bestValue) {
// Test that InstallDir is indeed there before keeping this index.
// Open the chosen key path remainder.
strcpy(bestName, keyName);
// Append rest of key.
strncat(bestName, nextKey, sizeof(bestName) - 1);
bestName[sizeof(bestName) - 1] = '\0';
lResult = RegOpenKeyEx(hTopKey, bestName, 0,
KEY_READ | KEY_WOW64_32KEY, &hKey);
if (lResult == ERROR_SUCCESS) {
lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType,
(LPBYTE)value, &valueSize);
if (lResult == ERROR_SUCCESS) {
bestIndex = (int)index;
bestValue = dvalue;
returnValue = true;
}
RegCloseKey(hKey);
}
}
size = sizeof(keyName) - 1;
}
RegCloseKey(hTopKey);
}
} else {
lResult = RegOpenKeyEx(hRootKey, subKey, 0, KEY_READ | KEY_WOW64_32KEY,
&hKey);
if (lResult == ERROR_SUCCESS) {
lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType,
(LPBYTE)value, &valueSize);
if (lResult == ERROR_SUCCESS)
returnValue = true;
RegCloseKey(hKey);
}
}
return returnValue;
}
/// \brief Get Windows SDK installation directory.
static bool getWindowsSDKDir(std::string &path) {
char windowsSDKInstallDir[256];
// Try the Windows registry.
bool hasSDKDir = getSystemRegistryString(
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows\\$VERSION",
"InstallationFolder",
windowsSDKInstallDir,
sizeof(windowsSDKInstallDir) - 1);
// If we have both vc80 and vc90, pick version we were compiled with.
if (hasSDKDir && windowsSDKInstallDir[0]) {
path = windowsSDKInstallDir;
return true;
}
return false;
}
// Get Visual Studio installation directory.
static bool getVisualStudioDir(std::string &path) {
// First check the environment variables that vsvars32.bat sets.
const char* vcinstalldir = getenv("VCINSTALLDIR");
if (vcinstalldir) {
char *p = const_cast<char *>(strstr(vcinstalldir, "\\VC"));
if (p)
*p = '\0';
path = vcinstalldir;
return true;
}
int VSVersion = (_MSC_VER / 100) - 6;
std::stringstream keyName;
keyName << "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\" << VSVersion << ".0";
char vsIDEInstallDir[256];
char vsExpressIDEInstallDir[256];
// Then try the windows registry.
bool hasVCDir = getSystemRegistryString(keyName.str().c_str(),
"InstallDir", vsIDEInstallDir, sizeof(vsIDEInstallDir) - 1);
keyName.str(std::string());
keyName << "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VCExpress\\" << VSVersion << ".0";
bool hasVCExpressDir = getSystemRegistryString(keyName.str().c_str(),
"InstallDir", vsExpressIDEInstallDir, sizeof(vsExpressIDEInstallDir) - 1);
// If we have both vc80 and vc90, pick version we were compiled with.
if (hasVCDir && vsIDEInstallDir[0]) {
char *p = (char*)strstr(vsIDEInstallDir, "\\Common7\\IDE");
if (p)
*p = '\0';
path = vsIDEInstallDir;
return true;
}
if (hasVCExpressDir && vsExpressIDEInstallDir[0]) {
char *p = (char*)strstr(vsExpressIDEInstallDir, "\\Common7\\IDE");
if (p)
*p = '\0';
path = vsExpressIDEInstallDir;
return true;
}
// Try the environment.
const char *vs120comntools = getenv("VS120COMNTOOLS");
const char *vs110comntools = getenv("VS110COMNTOOLS");
const char *vs100comntools = getenv("VS100COMNTOOLS");
const char *vs90comntools = getenv("VS90COMNTOOLS");
const char *vs80comntools = getenv("VS80COMNTOOLS");
const char *vscomntools = NULL;
// Try to find the version that we were compiled with
if(false) {}
#if (_MSC_VER >= 1800) // VC120
else if(vs120comntools) {
vscomntools = vs120comntools;
}
#elif (_MSC_VER >= 1700) // VC110
else if(vs110comntools) {
vscomntools = vs110comntools;
}
#elif (_MSC_VER >= 1600) // VC100
else if(vs100comntools) {
vscomntools = vs100comntools;
}
#elif (_MSC_VER == 1500) // VC80
else if(vs90comntools) {
vscomntools = vs90comntools;
}
#elif (_MSC_VER == 1400) // VC80
else if(vs80comntools) {
vscomntools = vs80comntools;
}
#endif
// Otherwise find any version we can
else if (vs120comntools)
vscomntools = vs120comntools;
else if (vs110comntools)
vscomntools = vs110comntools;
else if (vs100comntools)
vscomntools = vs100comntools;
else if (vs90comntools)
vscomntools = vs90comntools;
else if (vs80comntools)
vscomntools = vs80comntools;
if (vscomntools && *vscomntools) {
const char *p = strstr(vscomntools, "\\Common7\\Tools");
path = p ? std::string(vscomntools, p) : vscomntools;
return true;
}
return false;
}
#endif // _MSC_VER
namespace {
static void SetClingCustomLangOpts(LangOptions& Opts) {
Opts.EmitAllDecls = 0; // Otherwise if PCH attached will codegen all decls.
#ifdef _MSC_VER
Opts.Exceptions = 0;
if (Opts.CPlusPlus) {
Opts.CXXExceptions = 0;
}
#else
Opts.Exceptions = 1;
if (Opts.CPlusPlus) {
Opts.CXXExceptions = 1;
}
#endif // _MSC_VER
Opts.Deprecated = 1;
//Opts.Modules = 1;
// See test/CodeUnloading/PCH/VTables.cpp which implicitly compares clang
// to cling lang options. They should be the same, we should not have to
// give extra lang options to their invocations on any platform.
// Except -fexceptions -fcxx-exceptions.
Opts.Deprecated = 1;
Opts.GNUKeywords = 0;
Opts.Trigraphs = 1; // o no??! but clang has it on by default...
#ifdef __APPLE__
Opts.Blocks = 1;
Opts.MathErrno = 0;
#endif
// C++11 is turned on if cling is built with C++11: it's an interpreter;
// cross-language compilation doesn't make sense.
// Extracted from Boost/config/compiler.
// SunProCC has no C++11.
// VisualC's support is not obvious to extract from Boost...
// The value of __cplusplus in GCC < 5.0 (e.g. 4.9.3) when
// either -std=c++1y or -std=c++14 is specified is 201300L, which fails
// the test for C++14 or more (201402L) as previously specified.
// I would claim that the check should be relaxed to:
#if __cplusplus > 201103L
if (Opts.CPlusPlus) Opts.CPlusPlus14 = 1;
#endif
#if __cplusplus >= 201103L
if (Opts.CPlusPlus) Opts.CPlusPlus11 = 1;
#endif
#ifdef _REENTRANT
Opts.POSIXThreads = 1;
#endif
}
static void SetClingTargetLangOpts(LangOptions& Opts,
const TargetInfo& Target) {
if (Target.getTriple().getOS() == llvm::Triple::Win32) {
Opts.MicrosoftExt = 1;
Opts.MSCompatibilityVersion = 1300;
// Should fix http://llvm.org/bugs/show_bug.cgi?id=10528
Opts.DelayedTemplateParsing = 1;
} else {
Opts.MicrosoftExt = 0;
}
}
// This must be a copy of clang::getClangToolFullVersion(). Luckily
// we'll notice quickly if it ever changes! :-)
static std::string CopyOfClanggetClangToolFullVersion(StringRef ToolName) {
std::string buf;
llvm::raw_string_ostream OS(buf);
#ifdef CLANG_VENDOR
OS << CLANG_VENDOR;
#endif
OS << ToolName << " version " CLANG_VERSION_STRING " "
<< getClangFullRepositoryVersion();
// If vendor supplied, include the base LLVM version as well.
#ifdef CLANG_VENDOR
OS << " (based on LLVM " << PACKAGE_VERSION << ")";
#endif
return OS.str();
}
///\brief Check the compile-time clang version vs the run-time clang version,
/// a mismatch could cause havoc. Reports if clang versions differ.
static void CheckClangCompatibility() {
if (clang::getClangToolFullVersion("cling")
!= CopyOfClanggetClangToolFullVersion("cling"))
llvm::errs()
<< "Warning in cling::CIFactory::createCI():\n "
"Using incompatible clang library! "
"Please use the one provided by cling!\n";
return;
}
///\brief Adds standard library -I used by whatever compiler is found in PATH.
static void AddHostCXXIncludes(std::vector<const char*>& args) {
static bool IncludesSet = false;
static std::vector<std::string> HostCXXI;
if (!IncludesSet) {
IncludesSet = true;
#ifdef _MSC_VER
// Honor %INCLUDE%. It should know essential search paths with vcvarsall.bat.
if (const char *cl_include_dir = getenv("INCLUDE")) {
SmallVector<StringRef, 8> Dirs;
StringRef(cl_include_dir).split(Dirs, ";");
for (SmallVectorImpl<StringRef>::iterator I = Dirs.begin(), E = Dirs.end();
I != E; ++I) {
StringRef d = *I;
if (d.size() == 0)
continue;
HostCXXI.push_back("-I");
HostCXXI.push_back(d);
}
}
std::string VSDir;
std::string WindowsSDKDir;
// When built with access to the proper Windows APIs, try to actually find
// the correct include paths first.
if (getVisualStudioDir(VSDir)) {
HostCXXI.push_back("-I");
HostCXXI.push_back(VSDir + "\\VC\\include");
if (getWindowsSDKDir(WindowsSDKDir)) {
HostCXXI.push_back("-I");
HostCXXI.push_back(WindowsSDKDir + "\\include");
}
else {
HostCXXI.push_back("-I");
HostCXXI.push_back(VSDir + "\\VC\\PlatformSDK\\Include");
}
}
#else // _MSC_VER
static const char *CppInclQuery =
"echo | LC_ALL=C " LLVM_CXX " -xc++ -E -v - 2>&1 >/dev/null "
"| awk '/^#include </,/^End of search"
"/{if (!/^#include </ && !/^End of search/){ print }}' "
"| grep -E \"(c|g)\\+\\+\"";
if (FILE *pf = ::popen(CppInclQuery, "r")) {
HostCXXI.push_back("-nostdinc++");
char buf[2048];
while (fgets(buf, sizeof(buf), pf) && buf[0]) {
size_t lenbuf = strlen(buf);
buf[lenbuf - 1] = 0; // remove trailing \n
// Skip leading whitespace:
const char* start = buf;
while (start < buf + lenbuf && *start == ' ')
++start;
if (*start) {
HostCXXI.push_back("-I");
HostCXXI.push_back(start);
}
}
::pclose(pf);
}
// HostCXXI contains at least -nostdinc++, -I
if (HostCXXI.size() < 3) {
llvm::errs() << "ERROR in cling::CIFactory::createCI(): cannot extract "
"standard library include paths!\n"
"Invoking:\n"
" " << CppInclQuery << "\n"
"results in\n";
int ExitCode = system(CppInclQuery);
llvm::errs() << "with exit code " << ExitCode << "\n";
}
#endif // _MSC_VER
}
for (std::vector<std::string>::const_iterator
I = HostCXXI.begin(), E = HostCXXI.end(); I != E; ++I)
args.push_back(I->c_str());
}
//
// Dummy function so we can use dladdr to find the executable path.
//
void locate_cling_executable()
{
}
/// \brief Retrieves the clang CC1 specific flags out of the compilation's
/// jobs. Returns NULL on error.
static const llvm::opt::ArgStringList
*GetCC1Arguments(clang::DiagnosticsEngine *Diagnostics,
clang::driver::Compilation *Compilation) {
// We expect to get back exactly one Command job, if we didn't something
// failed. Extract that job from the Compilation.
const clang::driver::JobList &Jobs = Compilation->getJobs();
if (!Jobs.size() || !isa<clang::driver::Command>(*Jobs.begin())) {
// diagnose this...
return NULL;
}
// The one job we find should be to invoke clang again.
const clang::driver::Command *Cmd
= cast<clang::driver::Command>(&(*Jobs.begin()));
if (llvm::StringRef(Cmd->getCreator().getName()) != "clang") {
// diagnose this...
return NULL;
}
return &Cmd->getArguments();
}
/// Set cling's preprocessor defines to match the cling binary.
static void SetPreprocessorFromBinary(PreprocessorOptions& PPOpts) {
#ifdef _MSC_VER
PPOpts.addMacroDef("_HAS_EXCEPTIONS=0");
#endif
// Since cling, uses clang instead, macros always sees __CLANG__ defined
// In addition, clang also defined __GNUC__, we add the following two macros
// to allow scripts, and more important, dictionary generation to know which
// of the two is the underlying compiler.
#ifdef __clang__
PPOpts.addMacroDef("__CLING__clang__=" ClingStringify(__clang__));
#elif defined(__GNUC__)
PPOpts.addMacroDef("__CLING__GNUC__=" ClingStringify(__GNUC__));
#endif
// https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
#ifdef _GLIBCXX_USE_CXX11_ABI
PPOpts.addMacroDef("_GLIBCXX_USE_CXX11_ABI="
ClingStringify(_GLIBCXX_USE_CXX11_ABI));
#endif
}
/// Set target-specific preprocessor defines.
static void SetPreprocessorFromTarget(PreprocessorOptions& PPOpts,
const llvm::Triple& TTriple) {
if (TTriple.getEnvironment() == llvm::Triple::Cygnus) {
// clang "forgets" the basic arch part needed by winnt.h:
if (TTriple.getArch() == llvm::Triple::x86) {
PPOpts.addMacroDef("_X86_=1");
} else if (TTriple.getArch() == llvm::Triple::x86_64) {
PPOpts.addMacroDef("__x86_64=1");
} else {
llvm::errs() << "Warning in cling::CIFactory::createCI():\n"
"unhandled target architecture "
<< TTriple.getArchName() << '\n';
}
}
}
static CompilerInstance* createCIImpl(
std::unique_ptr<llvm::MemoryBuffer> buffer,
int argc,
const char* const *argv,
const char* llvmdir,
bool OnlyLex) {
// Create an instance builder, passing the llvmdir and arguments.
//
CheckClangCompatibility();
// Initialize the llvm library.
llvm::InitializeNativeTarget();
llvm::InitializeNativeTargetAsmParser();
llvm::InitializeNativeTargetAsmPrinter();
llvm::SmallString<512> resource_path;
if (llvmdir) {
resource_path = llvmdir;
llvm::sys::path::append(resource_path,"lib", "clang", CLANG_VERSION_STRING);
} else {
// FIXME: The first arg really does need to be argv[0] on FreeBSD.
//
// Note: The second arg is not used for Apple, FreeBSD, Linux,
// or cygwin, and can only be used on systems which support
// the use of dladdr().
//
// Note: On linux and cygwin this uses /proc/self/exe to find the path.
//
// Note: On Apple it uses _NSGetExecutablePath().
//
// Note: On FreeBSD it uses getprogpath().
//
// Note: Otherwise it uses dladdr().
//
resource_path
= CompilerInvocation::GetResourcesPath("cling",
(void*)(intptr_t) locate_cling_executable
);
}
// FIXME: Handle cases, where the cling is part of a library/framework.
// There we can't rely on the find executable logic.
if (!llvm::sys::fs::is_directory(resource_path.str())) {
llvm::errs()
<< "ERROR in cling::CIFactory::createCI():\n resource directory "
<< resource_path.str() << " not found!\n";
resource_path = "";
}
std::vector<const char*> argvCompile(argv, argv + argc);
// We do C++ by default; append right after argv[0] name
// Only insert it if there is no other "-x":
bool hasMinusX = false;
const char* lang = "c++";
for (const char* const* iarg = argv; iarg < argv + argc; ++iarg) {
if (!strcmp(*iarg, "-Xclang")) {
++iarg; // skip subsequent arg.
if (!strcmp(*iarg, "-x")) {
assert(iarg+2 < argv + argc && "Expected language after -Xclang -x");
lang = iarg[2]; // iarg[0]: -x, iarg[1]: -Xclang, iarg[2]: objc++
} else if (!strncmp(*iarg, "-x", 2)) {
lang = (*iarg) + 2;
}
continue;
}
hasMinusX = !strncmp(*iarg, "-x", 2);
if (hasMinusX)
break;
}
if (!hasMinusX) {
argvCompile.insert(argvCompile.begin() + 1,"-x");
argvCompile.insert(argvCompile.begin() + 2, lang);
}
AddHostCXXIncludes(argvCompile);
argvCompile.insert(argvCompile.end(),"-c");
argvCompile.insert(argvCompile.end(),"-");
clang::CompilerInvocation*
Invocation = new clang::CompilerInvocation;
// The compiler invocation is the owner of the diagnostic options.
// Everything else points to them.
DiagnosticOptions& DiagOpts = Invocation->getDiagnosticOpts();
TextDiagnosticPrinter* DiagnosticPrinter
= new TextDiagnosticPrinter(llvm::errs(), &DiagOpts);
llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs> DiagIDs(new DiagnosticIDs());
llvm::IntrusiveRefCntPtr<DiagnosticsEngine>
Diags(new DiagnosticsEngine(DiagIDs, &DiagOpts,
DiagnosticPrinter, /*Owns it*/ true));
clang::driver::Driver Driver(argv[0], llvm::sys::getDefaultTargetTriple(),
*Diags);
//Driver.setWarnMissingInput(false);
Driver.setCheckInputsExist(false); // think foo.C(12)
llvm::ArrayRef<const char*>RF(&(argvCompile[0]), argvCompile.size());
std::unique_ptr<clang::driver::Compilation>
Compilation(Driver.BuildCompilation(RF));
const clang::driver::ArgStringList* CC1Args
= GetCC1Arguments(Diags.get(), Compilation.get());
if (CC1Args == NULL) {
delete Invocation;
return 0;
}
clang::CompilerInvocation::CreateFromArgs(*Invocation, CC1Args->data() + 1,
CC1Args->data() + CC1Args->size(),
*Diags);
// We appreciate the error message about an unknown flag (or do we? if not
// we should switch to a different DiagEngine for parsing the flags).
// But in general we'll happily go on.
Diags->Reset();
// Create and setup a compiler instance.
std::unique_ptr<CompilerInstance> CI(new CompilerInstance());
CI->createFileManager();
llvm::StringRef PCHFileName
= Invocation->getPreprocessorOpts().ImplicitPCHInclude;
if (!PCHFileName.empty()) {
// Load target options etc from PCH.
struct PCHListener: public ASTReaderListener {
CompilerInvocation& m_Invocation;
PCHListener(CompilerInvocation& I): m_Invocation(I) {}
bool ReadLanguageOptions(const LangOptions &LangOpts,
bool /*Complain*/,
bool /*AllowCompatibleDifferences*/) override {
*m_Invocation.getLangOpts() = LangOpts;
return true;
}
bool ReadTargetOptions(const TargetOptions &TargetOpts,
bool /*AllowCompatibleDifferences*/) override {
m_Invocation.getTargetOpts() = TargetOpts;
return true;
}
bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
bool /*Complain*/,
std::string &/*SuggestedPredefines*/) override {
m_Invocation.getPreprocessorOpts() = PPOpts;
return true;
}
};
PCHListener listener(*Invocation);
ASTReader::readASTFileControlBlock(PCHFileName,
CI->getFileManager(),
/* FUTURE: *CI->getPCHContainerOperations(),*/
listener);
}
Invocation->getFrontendOpts().DisableFree = true;
// Copied from CompilerInstance::createDiagnostics:
// Chain in -verify checker, if requested.
if (DiagOpts.VerifyDiagnostics)
Diags->setClient(new clang::VerifyDiagnosticConsumer(*Diags));
// Configure our handling of diagnostics.
ProcessWarningOptions(*Diags, DiagOpts);
if (Invocation->getHeaderSearchOpts().UseBuiltinIncludes &&
!resource_path.empty()) {
// Update ResourceDir
// header search opts' entry for resource_path/include isn't
// updated by providing a new resource path; update it manually.
clang::HeaderSearchOptions& Opts = Invocation->getHeaderSearchOpts();
llvm::SmallString<512> oldResInc(Opts.ResourceDir);
llvm::sys::path::append(oldResInc, "include");
llvm::SmallString<512> newResInc(resource_path);
llvm::sys::path::append(newResInc, "include");
bool foundOldResInc = false;
for (unsigned i = 0, e = Opts.UserEntries.size();
!foundOldResInc && i != e; ++i) {
HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
if (!E.IsFramework && E.Group == clang::frontend::System
&& E.IgnoreSysRoot && oldResInc.str() == E.Path) {
E.Path = newResInc.c_str();
foundOldResInc = true;
}
}
Opts.ResourceDir = resource_path.str();
}
CI->setInvocation(Invocation);
CI->setDiagnostics(Diags.get());
PreprocessorOptions& PPOpts = CI->getInvocation().getPreprocessorOpts();
//
// Buffer the error messages while we process
// the compiler options.
//
if (PCHFileName.empty()) {
// Set the language options, which cling needs
SetClingCustomLangOpts(CI->getLangOpts());
}
SetPreprocessorFromBinary(PPOpts);
PPOpts.addMacroDef("__CLING__");
if (CI->getLangOpts().CPlusPlus11 == 1) {
// http://llvm.org/bugs/show_bug.cgi?id=13530
PPOpts.addMacroDef("__CLING__CXX11");
}
if (CI->getDiagnostics().hasErrorOccurred())
return 0;
CI->setTarget(TargetInfo::CreateTargetInfo(CI->getDiagnostics(),
Invocation->TargetOpts));
if (!CI->hasTarget())
return 0;
CI->getTarget().adjust(CI->getLangOpts());
if (PCHFileName.empty())
SetClingTargetLangOpts(CI->getLangOpts(), CI->getTarget());
SetPreprocessorFromTarget(PPOpts, CI->getTarget().getTriple());
// Set up source managers
SourceManager* SM = new SourceManager(CI->getDiagnostics(),
CI->getFileManager(),
/*UserFilesAreVolatile*/ true);
CI->setSourceManager(SM); // FIXME: SM leaks.
// As main file we want
// * a virtual file that is claiming to be huge
// * with an empty memory buffer attached (to bring the content)
FileManager& FM = SM->getFileManager();
// When asking for the input file below (which does not have a directory
// name), clang will call $PWD "." which is terrible if we ever change
// directories (see ROOT-7114). By asking for $PWD (and not ".") it will
// be registered as $PWD instead, which is stable even after chdirs.
char cwdbuf[2048];
const clang::DirectoryEntry* DE
= FM.getDirectory(getcwd_func(cwdbuf, sizeof(cwdbuf)));
(void)DE;
assert(!strcmp(DE->getName(), cwdbuf) && "Unexpected name for $PWD");
// Build the virtual file
const char* Filename = "InteractiveInputLineIncluder.h";
const std::string& CGOptsMainFileName
= CI->getInvocation().getCodeGenOpts().MainFileName;
if (!CGOptsMainFileName.empty())
Filename = CGOptsMainFileName.c_str();
const FileEntry* FE
= FM.getVirtualFile(Filename, 1U << 15U, time(0));
FileID MainFileID = SM->createFileID(FE, SourceLocation(), SrcMgr::C_User);
SM->setMainFileID(MainFileID);
const SrcMgr::SLocEntry& MainFileSLocE = SM->getSLocEntry(MainFileID);
const SrcMgr::ContentCache* MainFileCC
= MainFileSLocE.getFile().getContentCache();
if (!buffer)
buffer = llvm::MemoryBuffer::getMemBuffer("/*CLING DEFAULT MEMBUF*/\n");
const_cast<SrcMgr::ContentCache*>(MainFileCC)->setBuffer(std::move(buffer));
// Set up the preprocessor
CI->createPreprocessor(TU_Complete);
Preprocessor& PP = CI->getPreprocessor();
PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(),
PP.getLangOpts());
// Set up the ASTContext
CI->createASTContext();
if (OnlyLex) {
class IgnoreConsumer: public clang::ASTConsumer {
};
std::unique_ptr<clang::ASTConsumer> ignoreConsumer(new IgnoreConsumer());
CI->setASTConsumer(std::move(ignoreConsumer));
} else {
std::unique_ptr<cling::DeclCollector>
stateCollector(new cling::DeclCollector());
// Set up the ASTConsumers
CI->getASTContext().setASTMutationListener(stateCollector.get());
// Add the callback keeping track of the macro definitions
PP.addPPCallbacks(std::move(stateCollector->MakePPAdapter()));
CI->setASTConsumer(std::move(stateCollector));
}
// Set up Sema
CodeCompleteConsumer* CCC = 0;
CI->createSema(TU_Complete, CCC);
// Set CodeGen options
// want debug info
//CI->getCodeGenOpts().setDebugInfo(clang::CodeGenOptions::FullDebugInfo);
// CI->getCodeGenOpts().EmitDeclMetadata = 1; // For unloading, for later
CI->getCodeGenOpts().OptimizationLevel = 0; // see pure SSA, that comes out
CI->getCodeGenOpts().CXXCtorDtorAliases = 0; // aliasing the complete
// ctor to the base ctor causes
// the JIT to crash
CI->getCodeGenOpts().VerifyModule = 0; // takes too long
return CI.release(); // Passes over the ownership to the caller.
}
} // unnamed namespace
namespace cling {
CompilerInstance* CIFactory::createCI(llvm::StringRef code,
int argc,
const char* const *argv,
const char* llvmdir) {
return createCIImpl(llvm::MemoryBuffer::getMemBuffer(code), argc, argv, llvmdir, false /*OnlyLex*/);
}
CompilerInstance* CIFactory::createCI(MemBufPtr_t buffer,
int argc,
const char* const *argv,
const char* llvmdir,
bool OnlyLex) {
return createCIImpl(std::move(buffer), argc, argv, llvmdir, OnlyLex);
}
} // end namespace
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