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9 | #include "clang/ARCMigrate/ARCMT.h" |
10 | #include "clang/AST/ASTContext.h" |
11 | #include "clang/Frontend/PCHContainerOperations.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 "clang/Lex/PreprocessorOptions.h" |
17 | #include "llvm/Support/FileSystem.h" |
18 | #include "llvm/Support/MemoryBuffer.h" |
19 | #include "llvm/Support/Path.h" |
20 | #include "llvm/Support/Signals.h" |
21 | #include <system_error> |
22 | |
23 | using namespace clang; |
24 | using namespace arcmt; |
25 | |
26 | static llvm::cl::opt<bool> |
27 | CheckOnly("check-only", |
28 | llvm::cl::desc("Just check for issues that need to be handled manually")); |
29 | |
30 | |
31 | |
32 | |
33 | |
34 | static llvm::cl::opt<bool> |
35 | OutputTransformations("output-transformations", |
36 | llvm::cl::desc("Print the source transformations")); |
37 | |
38 | static llvm::cl::opt<bool> |
39 | VerifyDiags("verify",llvm::cl::desc("Verify emitted diagnostics and warnings")); |
40 | |
41 | static llvm::cl::opt<bool> |
42 | VerboseOpt("v", llvm::cl::desc("Enable verbose output")); |
43 | |
44 | static llvm::cl::opt<bool> |
45 | VerifyTransformedFiles("verify-transformed-files", |
46 | llvm::cl::desc("Read pairs of file mappings (typically the output of " |
47 | "c-arcmt-test) and compare their contents with the filenames " |
48 | "provided in command-line")); |
49 | |
50 | static llvm::cl::opt<std::string> |
51 | RemappingsFile("remappings-file", |
52 | llvm::cl::desc("Pairs of file mappings (typically the output of " |
53 | "c-arcmt-test)")); |
54 | |
55 | static llvm::cl::list<std::string> |
56 | ResultFiles(llvm::cl::Positional, llvm::cl::desc("<filename>...")); |
57 | |
58 | static llvm::cl::extrahelp ( |
59 | "\nusage with compiler args: arcmt-test [options] --args [compiler flags]\n"); |
60 | |
61 | |
62 | |
63 | |
64 | |
65 | |
66 | std::string GetExecutablePath(const char *Argv0) { |
67 | |
68 | |
69 | void *MainAddr = (void*) (intptr_t) GetExecutablePath; |
70 | return llvm::sys::fs::getMainExecutable(Argv0, MainAddr); |
71 | } |
72 | |
73 | static void printSourceLocation(SourceLocation loc, ASTContext &Ctx, |
74 | raw_ostream &OS); |
75 | static void printSourceRange(CharSourceRange range, ASTContext &Ctx, |
76 | raw_ostream &OS); |
77 | |
78 | namespace { |
79 | |
80 | class PrintTransforms : public MigrationProcess::RewriteListener { |
81 | ASTContext *Ctx; |
82 | raw_ostream &OS; |
83 | |
84 | public: |
85 | PrintTransforms(raw_ostream &OS) |
86 | : Ctx(nullptr), OS(OS) {} |
87 | |
88 | void start(ASTContext &ctx) override { Ctx = &ctx; } |
89 | void finish() override { Ctx = nullptr; } |
90 | |
91 | void insert(SourceLocation loc, StringRef text) override { |
92 | assert(Ctx); |
93 | OS << "Insert: "; |
94 | printSourceLocation(loc, *Ctx, OS); |
95 | OS << " \"" << text << "\"\n"; |
96 | } |
97 | |
98 | void remove(CharSourceRange range) override { |
99 | assert(Ctx); |
100 | OS << "Remove: "; |
101 | printSourceRange(range, *Ctx, OS); |
102 | OS << '\n'; |
103 | } |
104 | }; |
105 | |
106 | } |
107 | |
108 | static bool checkForMigration(StringRef resourcesPath, |
109 | ArrayRef<const char *> Args) { |
110 | IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions(); |
111 | DiagnosticConsumer *DiagClient = |
112 | new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts); |
113 | IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); |
114 | IntrusiveRefCntPtr<DiagnosticsEngine> Diags( |
115 | new DiagnosticsEngine(DiagID, &*DiagOpts, DiagClient)); |
116 | |
117 | VerifyDiagnosticConsumer *verifyDiag = nullptr; |
118 | if (VerifyDiags) { |
119 | verifyDiag = new VerifyDiagnosticConsumer(*Diags); |
120 | Diags->setClient(verifyDiag); |
121 | } |
122 | |
123 | CompilerInvocation CI; |
124 | if (!CompilerInvocation::CreateFromArgs(CI, Args.begin(), Args.end(), *Diags)) |
125 | return true; |
126 | |
127 | if (CI.getFrontendOpts().Inputs.empty()) { |
128 | llvm::errs() << "error: no input files\n"; |
129 | return true; |
130 | } |
131 | |
132 | if (!CI.getLangOpts()->ObjC) |
133 | return false; |
134 | |
135 | arcmt::checkForManualIssues(CI, CI.getFrontendOpts().Inputs[0], |
136 | std::make_shared<PCHContainerOperations>(), |
137 | Diags->getClient()); |
138 | return Diags->getClient()->getNumErrors() > 0; |
139 | } |
140 | |
141 | static void printResult(FileRemapper &remapper, raw_ostream &OS) { |
142 | PreprocessorOptions PPOpts; |
143 | remapper.applyMappings(PPOpts); |
144 | |
145 | for (const auto &RB : PPOpts.RemappedFileBuffers) |
146 | OS << RB.second->getBuffer(); |
147 | } |
148 | |
149 | static bool performTransformations(StringRef resourcesPath, |
150 | ArrayRef<const char *> Args) { |
151 | |
152 | if (checkForMigration(resourcesPath, Args)) |
153 | return true; |
154 | |
155 | IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions(); |
156 | DiagnosticConsumer *DiagClient = |
157 | new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts); |
158 | IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); |
159 | IntrusiveRefCntPtr<DiagnosticsEngine> TopDiags( |
160 | new DiagnosticsEngine(DiagID, &*DiagOpts, &*DiagClient)); |
161 | |
162 | CompilerInvocation origCI; |
163 | if (!CompilerInvocation::CreateFromArgs(origCI, Args.begin(), Args.end(), |
164 | *TopDiags)) |
165 | return true; |
166 | |
167 | if (origCI.getFrontendOpts().Inputs.empty()) { |
168 | llvm::errs() << "error: no input files\n"; |
169 | return true; |
170 | } |
171 | |
172 | if (!origCI.getLangOpts()->ObjC) |
173 | return false; |
174 | |
175 | MigrationProcess migration(origCI, std::make_shared<PCHContainerOperations>(), |
176 | DiagClient); |
177 | |
178 | std::vector<TransformFn> |
179 | transforms = arcmt::getAllTransformations(origCI.getLangOpts()->getGC(), |
180 | origCI.getMigratorOpts().NoFinalizeRemoval); |
181 | assert(!transforms.empty()); |
182 | |
183 | std::unique_ptr<PrintTransforms> transformPrinter; |
184 | if (OutputTransformations) |
185 | transformPrinter.reset(new PrintTransforms(llvm::outs())); |
186 | |
187 | for (unsigned i=0, e = transforms.size(); i != e; ++i) { |
188 | bool err = migration.applyTransform(transforms[i], transformPrinter.get()); |
189 | if (err) return true; |
190 | |
191 | if (VerboseOpt) { |
192 | if (i == e-1) |
193 | llvm::errs() << "\n##### FINAL RESULT #####\n"; |
194 | else |
195 | llvm::errs() << "\n##### OUTPUT AFTER "<< i+1 <<". TRANSFORMATION #####\n"; |
196 | printResult(migration.getRemapper(), llvm::errs()); |
197 | llvm::errs() << "\n##########################\n\n"; |
198 | } |
199 | } |
200 | |
201 | if (!OutputTransformations) |
202 | printResult(migration.getRemapper(), llvm::outs()); |
203 | |
204 | |
205 | |
206 | return false; |
207 | } |
208 | |
209 | static bool filesCompareEqual(StringRef fname1, StringRef fname2) { |
210 | using namespace llvm; |
211 | |
212 | ErrorOr<std::unique_ptr<MemoryBuffer>> file1 = MemoryBuffer::getFile(fname1); |
213 | if (!file1) |
214 | return false; |
215 | |
216 | ErrorOr<std::unique_ptr<MemoryBuffer>> file2 = MemoryBuffer::getFile(fname2); |
217 | if (!file2) |
218 | return false; |
219 | |
220 | return file1.get()->getBuffer() == file2.get()->getBuffer(); |
221 | } |
222 | |
223 | static bool verifyTransformedFiles(ArrayRef<std::string> resultFiles) { |
224 | using namespace llvm; |
225 | |
226 | assert(!resultFiles.empty()); |
227 | |
228 | std::map<StringRef, StringRef> resultMap; |
229 | |
230 | for (ArrayRef<std::string>::iterator |
231 | I = resultFiles.begin(), E = resultFiles.end(); I != E; ++I) { |
232 | StringRef fname(*I); |
233 | if (!fname.endswith(".result")) { |
234 | errs() << "error: filename '" << fname |
235 | << "' does not have '.result' extension\n"; |
236 | return true; |
237 | } |
238 | resultMap[sys::path::stem(fname)] = fname; |
239 | } |
240 | |
241 | ErrorOr<std::unique_ptr<MemoryBuffer>> inputBuf = std::error_code(); |
242 | if (RemappingsFile.empty()) |
243 | inputBuf = MemoryBuffer::getSTDIN(); |
244 | else |
245 | inputBuf = MemoryBuffer::getFile(RemappingsFile); |
246 | if (!inputBuf) { |
247 | errs() << "error: could not read remappings input\n"; |
248 | return true; |
249 | } |
250 | |
251 | SmallVector<StringRef, 8> strs; |
252 | inputBuf.get()->getBuffer().split(strs, "\n", -1, |
253 | ); |
254 | |
255 | if (strs.empty()) { |
256 | errs() << "error: no files to verify from stdin\n"; |
257 | return true; |
258 | } |
259 | if (strs.size() % 2 != 0) { |
260 | errs() << "error: files to verify are not original/result pairs\n"; |
261 | return true; |
262 | } |
263 | |
264 | for (unsigned i = 0, e = strs.size(); i != e; i += 2) { |
265 | StringRef inputOrigFname = strs[i]; |
266 | StringRef inputResultFname = strs[i+1]; |
267 | |
268 | std::map<StringRef, StringRef>::iterator It; |
269 | It = resultMap.find(sys::path::filename(inputOrigFname)); |
270 | if (It == resultMap.end()) { |
271 | errs() << "error: '" << inputOrigFname << "' is not in the list of " |
272 | << "transformed files to verify\n"; |
273 | return true; |
274 | } |
275 | |
276 | if (!sys::fs::exists(It->second)) { |
277 | errs() << "error: '" << It->second << "' does not exist\n"; |
278 | return true; |
279 | } |
280 | if (!sys::fs::exists(inputResultFname)) { |
281 | errs() << "error: '" << inputResultFname << "' does not exist\n"; |
282 | return true; |
283 | } |
284 | |
285 | if (!filesCompareEqual(It->second, inputResultFname)) { |
286 | errs() << "error: '" << It->second << "' is different than " |
287 | << "'" << inputResultFname << "'\n"; |
288 | return true; |
289 | } |
290 | |
291 | resultMap.erase(It); |
292 | } |
293 | |
294 | if (!resultMap.empty()) { |
295 | for (std::map<StringRef, StringRef>::iterator |
296 | I = resultMap.begin(), E = resultMap.end(); I != E; ++I) |
297 | errs() << "error: '" << I->second << "' was not verified!\n"; |
298 | return true; |
299 | } |
300 | |
301 | return false; |
302 | } |
303 | |
304 | |
305 | |
306 | |
307 | |
308 | static void printSourceLocation(SourceLocation loc, ASTContext &Ctx, |
309 | raw_ostream &OS) { |
310 | SourceManager &SM = Ctx.getSourceManager(); |
311 | PresumedLoc PL = SM.getPresumedLoc(loc); |
312 | |
313 | OS << llvm::sys::path::filename(PL.getFilename()); |
314 | OS << ":" << PL.getLine() << ":" |
315 | << PL.getColumn(); |
316 | } |
317 | |
318 | static void printSourceRange(CharSourceRange range, ASTContext &Ctx, |
319 | raw_ostream &OS) { |
320 | SourceManager &SM = Ctx.getSourceManager(); |
321 | const LangOptions &langOpts = Ctx.getLangOpts(); |
322 | |
323 | PresumedLoc PL = SM.getPresumedLoc(range.getBegin()); |
324 | |
325 | OS << llvm::sys::path::filename(PL.getFilename()); |
326 | OS << " [" << PL.getLine() << ":" |
327 | << PL.getColumn(); |
328 | OS << " - "; |
329 | |
330 | SourceLocation end = range.getEnd(); |
331 | PL = SM.getPresumedLoc(end); |
332 | |
333 | unsigned endCol = PL.getColumn() - 1; |
334 | if (!range.isTokenRange()) |
335 | endCol += Lexer::MeasureTokenLength(end, SM, langOpts); |
336 | OS << PL.getLine() << ":" << endCol << "]"; |
337 | } |
338 | |
339 | |
340 | |
341 | |
342 | |
343 | int main(int argc, const char **argv) { |
344 | void *MainAddr = (void*) (intptr_t) GetExecutablePath; |
345 | llvm::sys::PrintStackTraceOnErrorSignal(argv[0]); |
346 | |
347 | std::string |
348 | resourcesPath = CompilerInvocation::GetResourcesPath(argv[0], MainAddr); |
349 | |
350 | int optargc = 0; |
351 | for (; optargc != argc; ++optargc) { |
352 | if (StringRef(argv[optargc]) == "--args") |
353 | break; |
354 | } |
355 | llvm::cl::ParseCommandLineOptions(optargc, argv, "arcmt-test"); |
356 | |
357 | if (VerifyTransformedFiles) { |
358 | if (ResultFiles.empty()) { |
359 | llvm::cl::PrintHelpMessage(); |
360 | return 1; |
361 | } |
362 | return verifyTransformedFiles(ResultFiles); |
363 | } |
364 | |
365 | if (optargc == argc) { |
366 | llvm::cl::PrintHelpMessage(); |
367 | return 1; |
368 | } |
369 | |
370 | ArrayRef<const char*> Args(argv+optargc+1, argc-optargc-1); |
371 | |
372 | if (CheckOnly) |
373 | return checkForMigration(resourcesPath, Args); |
374 | |
375 | return performTransformations(resourcesPath, Args); |
376 | } |
377 | |