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/Utils.h" 14 #include "clang/Frontend/VerifyDiagnosticConsumer.h" 15 #include "clang/Lex/Preprocessor.h" 16 #include "llvm/Support/FileSystem.h" 17 #include "llvm/Support/MemoryBuffer.h" 18 #include "llvm/Support/Signals.h" 19 #include <system_error> 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 std::string 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::fs::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(nullptr), OS(OS) {} 85 86 void start(ASTContext &ctx) override { Ctx = &ctx; } 87 void finish() override { Ctx = nullptr; } 88 89 void insert(SourceLocation loc, StringRef text) override { 90 assert(Ctx); 91 OS << "Insert: "; 92 printSourceLocation(loc, *Ctx, OS); 93 OS << " \"" << text << "\"\n"; 94 } 95 96 void remove(CharSourceRange range) override { 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 IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions(); 109 DiagnosticConsumer *DiagClient = 110 new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts); 111 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 112 IntrusiveRefCntPtr<DiagnosticsEngine> Diags( 113 new DiagnosticsEngine(DiagID, &*DiagOpts, DiagClient)); 114 // Chain in -verify checker, if requested. 115 VerifyDiagnosticConsumer *verifyDiag = nullptr; 116 if (VerifyDiags) { 117 verifyDiag = new VerifyDiagnosticConsumer(*Diags); 118 Diags->setClient(verifyDiag); 119 } 120 121 CompilerInvocation CI; 122 if (!CompilerInvocation::CreateFromArgs(CI, Args.begin(), Args.end(), *Diags)) 123 return true; 124 125 if (CI.getFrontendOpts().Inputs.empty()) { 126 llvm::errs() << "error: no input files\n"; 127 return true; 128 } 129 130 if (!CI.getLangOpts()->ObjC1) 131 return false; 132 133 arcmt::checkForManualIssues(CI, CI.getFrontendOpts().Inputs[0], 134 Diags->getClient()); 135 return Diags->getClient()->getNumErrors() > 0; 136 } 137 138 static void printResult(FileRemapper &remapper, raw_ostream &OS) { 139 PreprocessorOptions PPOpts; 140 remapper.applyMappings(PPOpts); 141 // The changed files will be in memory buffers, print them. 142 for (const auto &RB : PPOpts.RemappedFileBuffers) 143 OS << RB.second->getBuffer(); 144 } 145 146 static bool performTransformations(StringRef resourcesPath, 147 ArrayRef<const char *> Args) { 148 // Check first. 149 if (checkForMigration(resourcesPath, Args)) 150 return true; 151 152 IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions(); 153 DiagnosticConsumer *DiagClient = 154 new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts); 155 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 156 IntrusiveRefCntPtr<DiagnosticsEngine> TopDiags( 157 new DiagnosticsEngine(DiagID, &*DiagOpts, &*DiagClient)); 158 159 CompilerInvocation origCI; 160 if (!CompilerInvocation::CreateFromArgs(origCI, Args.begin(), Args.end(), 161 *TopDiags)) 162 return true; 163 164 if (origCI.getFrontendOpts().Inputs.empty()) { 165 llvm::errs() << "error: no input files\n"; 166 return true; 167 } 168 169 if (!origCI.getLangOpts()->ObjC1) 170 return false; 171 172 MigrationProcess migration(origCI, DiagClient); 173 174 std::vector<TransformFn> 175 transforms = arcmt::getAllTransformations(origCI.getLangOpts()->getGC(), 176 origCI.getMigratorOpts().NoFinalizeRemoval); 177 assert(!transforms.empty()); 178 179 std::unique_ptr<PrintTransforms> transformPrinter; 180 if (OutputTransformations) 181 transformPrinter.reset(new PrintTransforms(llvm::outs())); 182 183 for (unsigned i=0, e = transforms.size(); i != e; ++i) { 184 bool err = migration.applyTransform(transforms[i], transformPrinter.get()); 185 if (err) return true; 186 187 if (VerboseOpt) { 188 if (i == e-1) 189 llvm::errs() << "\n##### FINAL RESULT #####\n"; 190 else 191 llvm::errs() << "\n##### OUTPUT AFTER "<< i+1 <<". TRANSFORMATION #####\n"; 192 printResult(migration.getRemapper(), llvm::errs()); 193 llvm::errs() << "\n##########################\n\n"; 194 } 195 } 196 197 if (!OutputTransformations) 198 printResult(migration.getRemapper(), llvm::outs()); 199 200 // FIXME: TestResultForARC 201 202 return false; 203 } 204 205 static bool filesCompareEqual(StringRef fname1, StringRef fname2) { 206 using namespace llvm; 207 208 ErrorOr<std::unique_ptr<MemoryBuffer>> file1 = MemoryBuffer::getFile(fname1); 209 if (!file1) 210 return false; 211 212 ErrorOr<std::unique_ptr<MemoryBuffer>> file2 = MemoryBuffer::getFile(fname2); 213 if (!file2) 214 return false; 215 216 return file1.get()->getBuffer() == file2.get()->getBuffer(); 217 } 218 219 static bool verifyTransformedFiles(ArrayRef<std::string> resultFiles) { 220 using namespace llvm; 221 222 assert(!resultFiles.empty()); 223 224 std::map<StringRef, StringRef> resultMap; 225 226 for (ArrayRef<std::string>::iterator 227 I = resultFiles.begin(), E = resultFiles.end(); I != E; ++I) { 228 StringRef fname(*I); 229 if (!fname.endswith(".result")) { 230 errs() << "error: filename '" << fname 231 << "' does not have '.result' extension\n"; 232 return true; 233 } 234 resultMap[sys::path::stem(fname)] = fname; 235 } 236 237 ErrorOr<std::unique_ptr<MemoryBuffer>> inputBuf = std::error_code(); 238 if (RemappingsFile.empty()) 239 inputBuf = MemoryBuffer::getSTDIN(); 240 else 241 inputBuf = MemoryBuffer::getFile(RemappingsFile); 242 if (!inputBuf) { 243 errs() << "error: could not read remappings input\n"; 244 return true; 245 } 246 247 SmallVector<StringRef, 8> strs; 248 inputBuf.get()->getBuffer().split(strs, "\n", /*MaxSplit=*/-1, 249 /*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 if (!sys::fs::exists(It->second)) { 273 errs() << "error: '" << It->second << "' does not exist\n"; 274 return true; 275 } 276 if (!sys::fs::exists(inputResultFname)) { 277 errs() << "error: '" << inputResultFname << "' does not exist\n"; 278 return true; 279 } 280 281 if (!filesCompareEqual(It->second, inputResultFname)) { 282 errs() << "error: '" << It->second << "' is different than " 283 << "'" << inputResultFname << "'\n"; 284 return true; 285 } 286 287 resultMap.erase(It); 288 } 289 290 if (!resultMap.empty()) { 291 for (std::map<StringRef, StringRef>::iterator 292 I = resultMap.begin(), E = resultMap.end(); I != E; ++I) 293 errs() << "error: '" << I->second << "' was not verified!\n"; 294 return true; 295 } 296 297 return false; 298 } 299 300 //===----------------------------------------------------------------------===// 301 // Misc. functions. 302 //===----------------------------------------------------------------------===// 303 304 static void printSourceLocation(SourceLocation loc, ASTContext &Ctx, 305 raw_ostream &OS) { 306 SourceManager &SM = Ctx.getSourceManager(); 307 PresumedLoc PL = SM.getPresumedLoc(loc); 308 309 OS << llvm::sys::path::filename(PL.getFilename()); 310 OS << ":" << PL.getLine() << ":" 311 << PL.getColumn(); 312 } 313 314 static void printSourceRange(CharSourceRange range, ASTContext &Ctx, 315 raw_ostream &OS) { 316 SourceManager &SM = Ctx.getSourceManager(); 317 const LangOptions &langOpts = Ctx.getLangOpts(); 318 319 PresumedLoc PL = SM.getPresumedLoc(range.getBegin()); 320 321 OS << llvm::sys::path::filename(PL.getFilename()); 322 OS << " [" << PL.getLine() << ":" 323 << PL.getColumn(); 324 OS << " - "; 325 326 SourceLocation end = range.getEnd(); 327 PL = SM.getPresumedLoc(end); 328 329 unsigned endCol = PL.getColumn() - 1; 330 if (!range.isTokenRange()) 331 endCol += Lexer::MeasureTokenLength(end, SM, langOpts); 332 OS << PL.getLine() << ":" << endCol << "]"; 333 } 334 335 //===----------------------------------------------------------------------===// 336 // Command line processing. 337 //===----------------------------------------------------------------------===// 338 339 int main(int argc, const char **argv) { 340 void *MainAddr = (void*) (intptr_t) GetExecutablePath; 341 llvm::sys::PrintStackTraceOnErrorSignal(); 342 343 std::string 344 resourcesPath = CompilerInvocation::GetResourcesPath(argv[0], MainAddr); 345 346 int optargc = 0; 347 for (; optargc != argc; ++optargc) { 348 if (StringRef(argv[optargc]) == "--args") 349 break; 350 } 351 llvm::cl::ParseCommandLineOptions(optargc, argv, "arcmt-test"); 352 353 if (VerifyTransformedFiles) { 354 if (ResultFiles.empty()) { 355 llvm::cl::PrintHelpMessage(); 356 return 1; 357 } 358 return verifyTransformedFiles(ResultFiles); 359 } 360 361 if (optargc == argc) { 362 llvm::cl::PrintHelpMessage(); 363 return 1; 364 } 365 366 ArrayRef<const char*> Args(argv+optargc+1, argc-optargc-1); 367 368 if (CheckOnly) 369 return checkForMigration(resourcesPath, Args); 370 371 return performTransformations(resourcesPath, Args); 372 } 373
