1 //===-- arcmt-test.cpp - ARC Migration Tool testbed -----------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/ARCMigrate/ARCMT.h" 11 #include "clang/Frontend/ASTUnit.h" 12 #include "clang/Frontend/TextDiagnosticPrinter.h" 13 #include "clang/Frontend/VerifyDiagnosticConsumer.h" 14 #include "clang/Frontend/Utils.h" 15 #include "clang/Lex/Preprocessor.h" 16 #include "llvm/Support/MemoryBuffer.h" 17 #include "llvm/Support/FileSystem.h" 18 #include "llvm/Support/Signals.h" 19 #include "llvm/Support/system_error.h" 20 21 using namespace clang; 22 using namespace arcmt; 23 24 static llvm::cl::opt<bool> 25 CheckOnly("check-only", 26 llvm::cl::desc("Just check for issues that need to be handled manually")); 27 28 //static llvm::cl::opt<bool> 29 //TestResultForARC("test-result", 30 //llvm::cl::desc("Test the result of transformations by parsing it in ARC mode")); 31 32 static llvm::cl::opt<bool> 33 OutputTransformations("output-transformations", 34 llvm::cl::desc("Print the source transformations")); 35 36 static llvm::cl::opt<bool> 37 VerifyDiags("verify",llvm::cl::desc("Verify emitted diagnostics and warnings")); 38 39 static llvm::cl::opt<bool> 40 VerboseOpt("v", llvm::cl::desc("Enable verbose output")); 41 42 static llvm::cl::opt<bool> 43 VerifyTransformedFiles("verify-transformed-files", 44 llvm::cl::desc("Read pairs of file mappings (typically the output of " 45 "c-arcmt-test) and compare their contents with the filenames " 46 "provided in command-line")); 47 48 static llvm::cl::opt<std::string> 49 RemappingsFile("remappings-file", 50 llvm::cl::desc("Pairs of file mappings (typically the output of " 51 "c-arcmt-test)")); 52 53 static llvm::cl::list<std::string> 54 ResultFiles(llvm::cl::Positional, llvm::cl::desc("<filename>...")); 55 56 static llvm::cl::extrahelp extraHelp( 57 "\nusage with compiler args: arcmt-test [options] --args [compiler flags]\n"); 58 59 // This function isn't referenced outside its translation unit, but it 60 // can't use the "static" keyword because its address is used for 61 // GetMainExecutable (since some platforms don't support taking the 62 // address of main, and some platforms can't implement GetMainExecutable 63 // without being given the address of a function in the main executable). 64 llvm::sys::Path GetExecutablePath(const char *Argv0) { 65 // This just needs to be some symbol in the binary; C++ doesn't 66 // allow taking the address of ::main however. 67 void *MainAddr = (void*) (intptr_t) GetExecutablePath; 68 return llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); 69 } 70 71 static void printSourceLocation(SourceLocation loc, ASTContext &Ctx, 72 raw_ostream &OS); 73 static void printSourceRange(CharSourceRange range, ASTContext &Ctx, 74 raw_ostream &OS); 75 76 namespace { 77 78 class PrintTransforms : public MigrationProcess::RewriteListener { 79 ASTContext *Ctx; 80 raw_ostream &OS; 81 82 public: 83 PrintTransforms(raw_ostream &OS) 84 : Ctx(0), OS(OS) { } 85 86 virtual void start(ASTContext &ctx) { Ctx = &ctx; } 87 virtual void finish() { Ctx = 0; } 88 89 virtual void insert(SourceLocation loc, StringRef text) { 90 assert(Ctx); 91 OS << "Insert: "; 92 printSourceLocation(loc, *Ctx, OS); 93 OS << " \"" << text << "\"\n"; 94 } 95 96 virtual void remove(CharSourceRange range) { 97 assert(Ctx); 98 OS << "Remove: "; 99 printSourceRange(range, *Ctx, OS); 100 OS << '\n'; 101 } 102 }; 103 104 } // anonymous namespace 105 106 static bool checkForMigration(StringRef resourcesPath, 107 ArrayRef<const char *> Args) { 108 DiagnosticConsumer *DiagClient = 109 new TextDiagnosticPrinter(llvm::errs(), DiagnosticOptions()); 110 llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 111 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> Diags( 112 new DiagnosticsEngine(DiagID, DiagClient)); 113 // Chain in -verify checker, if requested. 114 VerifyDiagnosticConsumer *verifyDiag = 0; 115 if (VerifyDiags) { 116 verifyDiag = new VerifyDiagnosticConsumer(*Diags); 117 Diags->setClient(verifyDiag); 118 } 119 120 CompilerInvocation CI; 121 CompilerInvocation::CreateFromArgs(CI, Args.begin(), Args.end(), *Diags); 122 123 if (CI.getFrontendOpts().Inputs.empty()) { 124 llvm::errs() << "error: no input files\n"; 125 return true; 126 } 127 128 if (!CI.getLangOpts().ObjC1) 129 return false; 130 131 arcmt::checkForManualIssues(CI, 132 CI.getFrontendOpts().Inputs[0].second, 133 CI.getFrontendOpts().Inputs[0].first, 134 Diags->getClient()); 135 return Diags->getClient()->getNumErrors() > 0; 136 } 137 138 static void printResult(FileRemapper &remapper, raw_ostream &OS) { 139 CompilerInvocation CI; 140 remapper.applyMappings(CI); 141 PreprocessorOptions &PPOpts = CI.getPreprocessorOpts(); 142 // The changed files will be in memory buffers, print them. 143 for (unsigned i = 0, e = PPOpts.RemappedFileBuffers.size(); i != e; ++i) { 144 const llvm::MemoryBuffer *mem = PPOpts.RemappedFileBuffers[i].second; 145 OS << mem->getBuffer(); 146 } 147 } 148 149 static bool performTransformations(StringRef resourcesPath, 150 ArrayRef<const char *> Args) { 151 // Check first. 152 if (checkForMigration(resourcesPath, Args)) 153 return true; 154 155 DiagnosticConsumer *DiagClient = 156 new TextDiagnosticPrinter(llvm::errs(), DiagnosticOptions()); 157 llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 158 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> TopDiags( 159 new DiagnosticsEngine(DiagID, DiagClient)); 160 161 CompilerInvocation origCI; 162 CompilerInvocation::CreateFromArgs(origCI, Args.begin(), Args.end(), 163 *TopDiags); 164 165 if (origCI.getFrontendOpts().Inputs.empty()) { 166 llvm::errs() << "error: no input files\n"; 167 return true; 168 } 169 170 if (!origCI.getLangOpts().ObjC1) 171 return false; 172 173 MigrationProcess migration(origCI, DiagClient); 174 175 std::vector<TransformFn> transforms = arcmt::getAllTransformations(); 176 assert(!transforms.empty()); 177 178 llvm::OwningPtr<PrintTransforms> transformPrinter; 179 if (OutputTransformations) 180 transformPrinter.reset(new PrintTransforms(llvm::outs())); 181 182 for (unsigned i=0, e = transforms.size(); i != e; ++i) { 183 bool err = migration.applyTransform(transforms[i], transformPrinter.get()); 184 if (err) return true; 185 186 if (VerboseOpt) { 187 if (i == e-1) 188 llvm::errs() << "\n##### FINAL RESULT #####\n"; 189 else 190 llvm::errs() << "\n##### OUTPUT AFTER "<< i+1 <<". TRANSFORMATION #####\n"; 191 printResult(migration.getRemapper(), llvm::errs()); 192 llvm::errs() << "\n##########################\n\n"; 193 } 194 } 195 196 if (!OutputTransformations) 197 printResult(migration.getRemapper(), llvm::outs()); 198 199 // FIXME: TestResultForARC 200 201 return false; 202 } 203 204 static bool filesCompareEqual(StringRef fname1, StringRef fname2) { 205 using namespace llvm; 206 207 OwningPtr<MemoryBuffer> file1; 208 MemoryBuffer::getFile(fname1, file1); 209 if (!file1) 210 return false; 211 212 OwningPtr<MemoryBuffer> file2; 213 MemoryBuffer::getFile(fname2, file2); 214 if (!file2) 215 return false; 216 217 return file1->getBuffer() == file2->getBuffer(); 218 } 219 220 static bool verifyTransformedFiles(ArrayRef<std::string> resultFiles) { 221 using namespace llvm; 222 223 assert(!resultFiles.empty()); 224 225 std::map<StringRef, StringRef> resultMap; 226 227 for (ArrayRef<std::string>::iterator 228 I = resultFiles.begin(), E = resultFiles.end(); I != E; ++I) { 229 StringRef fname(*I); 230 if (!fname.endswith(".result")) { 231 errs() << "error: filename '" << fname 232 << "' does not have '.result' extension\n"; 233 return true; 234 } 235 resultMap[sys::path::stem(fname)] = fname; 236 } 237 238 OwningPtr<MemoryBuffer> inputBuf; 239 if (RemappingsFile.empty()) 240 MemoryBuffer::getSTDIN(inputBuf); 241 else 242 MemoryBuffer::getFile(RemappingsFile, inputBuf); 243 if (!inputBuf) { 244 errs() << "error: could not read remappings input\n"; 245 return true; 246 } 247 248 SmallVector<StringRef, 8> strs; 249 inputBuf->getBuffer().split(strs, "\n", /*MaxSplit=*/-1, /*KeepEmpty=*/false); 250 251 if (strs.empty()) { 252 errs() << "error: no files to verify from stdin\n"; 253 return true; 254 } 255 if (strs.size() % 2 != 0) { 256 errs() << "error: files to verify are not original/result pairs\n"; 257 return true; 258 } 259 260 for (unsigned i = 0, e = strs.size(); i != e; i += 2) { 261 StringRef inputOrigFname = strs[i]; 262 StringRef inputResultFname = strs[i+1]; 263 264 std::map<StringRef, StringRef>::iterator It; 265 It = resultMap.find(sys::path::filename(inputOrigFname)); 266 if (It == resultMap.end()) { 267 errs() << "error: '" << inputOrigFname << "' is not in the list of " 268 << "transformed files to verify\n"; 269 return true; 270 } 271 272 bool exists = false; 273 sys::fs::exists(It->second, exists); 274 if (!exists) { 275 errs() << "error: '" << It->second << "' does not exist\n"; 276 return true; 277 } 278 sys::fs::exists(inputResultFname, exists); 279 if (!exists) { 280 errs() << "error: '" << inputResultFname << "' does not exist\n"; 281 return true; 282 } 283 284 if (!filesCompareEqual(It->second, inputResultFname)) { 285 errs() << "error: '" << It->second << "' is different than " 286 << "'" << inputResultFname << "'\n"; 287 return true; 288 } 289 290 resultMap.erase(It); 291 } 292 293 if (!resultMap.empty()) { 294 for (std::map<StringRef, StringRef>::iterator 295 I = resultMap.begin(), E = resultMap.end(); I != E; ++I) 296 errs() << "error: '" << I->second << "' was not verified!\n"; 297 return true; 298 } 299 300 return false; 301 } 302 303 //===----------------------------------------------------------------------===// 304 // Misc. functions. 305 //===----------------------------------------------------------------------===// 306 307 static void printSourceLocation(SourceLocation loc, ASTContext &Ctx, 308 raw_ostream &OS) { 309 SourceManager &SM = Ctx.getSourceManager(); 310 PresumedLoc PL = SM.getPresumedLoc(loc); 311 312 OS << llvm::sys::path::filename(PL.getFilename()); 313 OS << ":" << PL.getLine() << ":" 314 << PL.getColumn(); 315 } 316 317 static void printSourceRange(CharSourceRange range, ASTContext &Ctx, 318 raw_ostream &OS) { 319 SourceManager &SM = Ctx.getSourceManager(); 320 const LangOptions &langOpts = Ctx.getLangOptions(); 321 322 PresumedLoc PL = SM.getPresumedLoc(range.getBegin()); 323 324 OS << llvm::sys::path::filename(PL.getFilename()); 325 OS << " [" << PL.getLine() << ":" 326 << PL.getColumn(); 327 OS << " - "; 328 329 SourceLocation end = range.getEnd(); 330 PL = SM.getPresumedLoc(end); 331 332 unsigned endCol = PL.getColumn() - 1; 333 if (!range.isTokenRange()) 334 endCol += Lexer::MeasureTokenLength(end, SM, langOpts); 335 OS << PL.getLine() << ":" << endCol << "]"; 336 } 337 338 //===----------------------------------------------------------------------===// 339 // Command line processing. 340 //===----------------------------------------------------------------------===// 341 342 int main(int argc, const char **argv) { 343 void *MainAddr = (void*) (intptr_t) GetExecutablePath; 344 llvm::sys::PrintStackTraceOnErrorSignal(); 345 346 std::string 347 resourcesPath = CompilerInvocation::GetResourcesPath(argv[0], MainAddr); 348 349 int optargc = 0; 350 for (; optargc != argc; ++optargc) { 351 if (StringRef(argv[optargc]) == "--args") 352 break; 353 } 354 llvm::cl::ParseCommandLineOptions(optargc, const_cast<char **>(argv), "arcmt-test"); 355 356 if (VerifyTransformedFiles) { 357 if (ResultFiles.empty()) { 358 llvm::cl::PrintHelpMessage(); 359 return 1; 360 } 361 return verifyTransformedFiles(ResultFiles); 362 } 363 364 if (optargc == argc) { 365 llvm::cl::PrintHelpMessage(); 366 return 1; 367 } 368 369 ArrayRef<const char*> Args(argv+optargc+1, argc-optargc-1); 370 371 if (CheckOnly) 372 return checkForMigration(resourcesPath, Args); 373 374 return performTransformations(resourcesPath, Args); 375 } 376
