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Daniel Dunbar8305d012009-11-14 10:42:46 +00001//===--- FrontendActions.cpp ----------------------------------------------===//
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/Frontend/FrontendActions.h"
11#include "clang/AST/ASTConsumer.h"
12#include "clang/Basic/FileManager.h"
Daniel Dunbar8305d012009-11-14 10:42:46 +000013#include "clang/Frontend/ASTConsumers.h"
14#include "clang/Frontend/ASTUnit.h"
15#include "clang/Frontend/CompilerInstance.h"
Daniel Dunbar8305d012009-11-14 10:42:46 +000016#include "clang/Frontend/FrontendDiagnostic.h"
17#include "clang/Frontend/Utils.h"
Chandler Carruth55fc8732012-12-04 09:13:33 +000018#include "clang/Lex/HeaderSearch.h"
19#include "clang/Lex/Pragma.h"
20#include "clang/Lex/Preprocessor.h"
21#include "clang/Parse/Parser.h"
Douglas Gregorc544ba02013-03-27 16:47:18 +000022#include "clang/Serialization/ASTReader.h"
Sebastian Redl7faa2ec2010-08-18 23:56:37 +000023#include "clang/Serialization/ASTWriter.h"
Nick Lewyckyba5f6ec2010-04-24 01:30:46 +000024#include "llvm/ADT/OwningPtr.h"
Douglas Gregor77d029f2011-12-08 19:11:24 +000025#include "llvm/Support/FileSystem.h"
Douglas Gregorf033f1d2010-07-20 20:18:03 +000026#include "llvm/Support/MemoryBuffer.h"
Daniel Dunbar8305d012009-11-14 10:42:46 +000027#include "llvm/Support/raw_ostream.h"
Douglas Gregor10efbaf2011-09-23 23:43:36 +000028#include "llvm/Support/system_error.h"
29
Daniel Dunbar8305d012009-11-14 10:42:46 +000030using namespace clang;
31
Daniel Dunbar5f3b9972009-11-14 10:42:57 +000032//===----------------------------------------------------------------------===//
Daniel Dunbar27585952010-03-19 19:44:04 +000033// Custom Actions
34//===----------------------------------------------------------------------===//
35
36ASTConsumer *InitOnlyAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +000037 StringRef InFile) {
Daniel Dunbar27585952010-03-19 19:44:04 +000038 return new ASTConsumer();
39}
40
41void InitOnlyAction::ExecuteAction() {
42}
43
44//===----------------------------------------------------------------------===//
Daniel Dunbar5f3b9972009-11-14 10:42:57 +000045// AST Consumer Actions
46//===----------------------------------------------------------------------===//
47
Daniel Dunbar8305d012009-11-14 10:42:46 +000048ASTConsumer *ASTPrintAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +000049 StringRef InFile) {
50 if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
Alexander Kornienkoe34a0522012-07-26 16:01:23 +000051 return CreateASTPrinter(OS, CI.getFrontendOpts().ASTDumpFilter);
Daniel Dunbar36043592009-12-03 09:13:30 +000052 return 0;
Daniel Dunbar8305d012009-11-14 10:42:46 +000053}
54
Daniel Dunbar8305d012009-11-14 10:42:46 +000055ASTConsumer *ASTDumpAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +000056 StringRef InFile) {
Alexander Kornienkoe34a0522012-07-26 16:01:23 +000057 return CreateASTDumper(CI.getFrontendOpts().ASTDumpFilter);
Daniel Dunbar8305d012009-11-14 10:42:46 +000058}
59
Alexander Kornienko171af642012-07-31 09:37:40 +000060ASTConsumer *ASTDeclListAction::CreateASTConsumer(CompilerInstance &CI,
61 StringRef InFile) {
62 return CreateASTDeclNodeLister();
63}
64
John McCallf3514242010-11-24 11:21:45 +000065ASTConsumer *ASTDumpXMLAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +000066 StringRef InFile) {
67 raw_ostream *OS;
John McCallf3514242010-11-24 11:21:45 +000068 if (CI.getFrontendOpts().OutputFile.empty())
69 OS = &llvm::outs();
70 else
71 OS = CI.createDefaultOutputFile(false, InFile);
72 if (!OS) return 0;
73 return CreateASTDumperXML(*OS);
74}
75
Daniel Dunbar8305d012009-11-14 10:42:46 +000076ASTConsumer *ASTViewAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +000077 StringRef InFile) {
Daniel Dunbar8305d012009-11-14 10:42:46 +000078 return CreateASTViewer();
79}
80
81ASTConsumer *DeclContextPrintAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +000082 StringRef InFile) {
Daniel Dunbar8305d012009-11-14 10:42:46 +000083 return CreateDeclContextPrinter();
84}
85
Daniel Dunbar8305d012009-11-14 10:42:46 +000086ASTConsumer *GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +000087 StringRef InFile) {
Douglas Gregor1d715ac2010-08-03 08:14:03 +000088 std::string Sysroot;
Argyrios Kyrtzidis8e3df4d2011-02-15 17:54:22 +000089 std::string OutputFile;
Chris Lattner5f9e2722011-07-23 10:55:15 +000090 raw_ostream *OS = 0;
Douglas Gregor9293ba82011-08-25 22:35:51 +000091 if (ComputeASTConsumerArguments(CI, InFile, Sysroot, OutputFile, OS))
Daniel Dunbar8305d012009-11-14 10:42:46 +000092 return 0;
Douglas Gregor1d715ac2010-08-03 08:14:03 +000093
Douglas Gregor832d6202011-07-22 16:35:34 +000094 if (!CI.getFrontendOpts().RelocatablePCH)
95 Sysroot.clear();
Douglas Gregora8cc6ce2011-11-30 04:39:39 +000096 return new PCHGenerator(CI.getPreprocessor(), OutputFile, 0, Sysroot, OS);
Douglas Gregor1d715ac2010-08-03 08:14:03 +000097}
98
99bool GeneratePCHAction::ComputeASTConsumerArguments(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000100 StringRef InFile,
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000101 std::string &Sysroot,
Argyrios Kyrtzidis8e3df4d2011-02-15 17:54:22 +0000102 std::string &OutputFile,
Douglas Gregor9293ba82011-08-25 22:35:51 +0000103 raw_ostream *&OS) {
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000104 Sysroot = CI.getHeaderSearchOpts().Sysroot;
105 if (CI.getFrontendOpts().RelocatablePCH && Sysroot.empty()) {
Sebastian Redl11c3dc42010-08-17 17:55:38 +0000106 CI.getDiagnostics().Report(diag::err_relocatable_without_isysroot);
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000107 return true;
Daniel Dunbar8305d012009-11-14 10:42:46 +0000108 }
109
Daniel Dunbarc7a9cda2011-01-31 22:00:44 +0000110 // We use createOutputFile here because this is exposed via libclang, and we
111 // must disable the RemoveFileOnSignal behavior.
Argyrios Kyrtzidis7e909852011-07-28 00:45:10 +0000112 // We use a temporary to avoid race conditions.
Daniel Dunbarc7a9cda2011-01-31 22:00:44 +0000113 OS = CI.createOutputFile(CI.getFrontendOpts().OutputFile, /*Binary=*/true,
Argyrios Kyrtzidis7e909852011-07-28 00:45:10 +0000114 /*RemoveFileOnSignal=*/false, InFile,
115 /*Extension=*/"", /*useTemporary=*/true);
Daniel Dunbar36043592009-12-03 09:13:30 +0000116 if (!OS)
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000117 return true;
Daniel Dunbar36043592009-12-03 09:13:30 +0000118
Argyrios Kyrtzidis8e3df4d2011-02-15 17:54:22 +0000119 OutputFile = CI.getFrontendOpts().OutputFile;
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000120 return false;
Daniel Dunbar8305d012009-11-14 10:42:46 +0000121}
122
Douglas Gregordb1cde72011-11-16 00:09:06 +0000123ASTConsumer *GenerateModuleAction::CreateASTConsumer(CompilerInstance &CI,
124 StringRef InFile) {
125 std::string Sysroot;
126 std::string OutputFile;
127 raw_ostream *OS = 0;
128 if (ComputeASTConsumerArguments(CI, InFile, Sysroot, OutputFile, OS))
129 return 0;
130
Douglas Gregora8cc6ce2011-11-30 04:39:39 +0000131 return new PCHGenerator(CI.getPreprocessor(), OutputFile, Module,
Douglas Gregordb1cde72011-11-16 00:09:06 +0000132 Sysroot, OS);
133}
134
Argyrios Kyrtzidis2a857182012-10-10 02:12:39 +0000135static SmallVectorImpl<char> &
136operator+=(SmallVectorImpl<char> &Includes, StringRef RHS) {
137 Includes.append(RHS.begin(), RHS.end());
138 return Includes;
139}
140
141static void addHeaderInclude(StringRef HeaderName,
142 SmallVectorImpl<char> &Includes,
143 const LangOptions &LangOpts) {
144 if (LangOpts.ObjC1)
145 Includes += "#import \"";
146 else
147 Includes += "#include \"";
148 Includes += HeaderName;
149 Includes += "\"\n";
150}
151
152static void addHeaderInclude(const FileEntry *Header,
153 SmallVectorImpl<char> &Includes,
154 const LangOptions &LangOpts) {
155 addHeaderInclude(Header->getName(), Includes, LangOpts);
156}
157
Douglas Gregor261e75b2011-11-16 17:04:00 +0000158/// \brief Collect the set of header includes needed to construct the given
Argyrios Kyrtzidisc7782d92012-10-05 00:22:33 +0000159/// module and update the TopHeaders file set of the module.
Douglas Gregor261e75b2011-11-16 17:04:00 +0000160///
161/// \param Module The module we're collecting includes from.
Douglas Gregor8075ce62011-12-06 17:15:11 +0000162///
James Dennett5e9dda62012-06-15 21:48:19 +0000163/// \param Includes Will be augmented with the set of \#includes or \#imports
Douglas Gregor8075ce62011-12-06 17:15:11 +0000164/// needed to load all of the named headers.
Douglas Gregor261e75b2011-11-16 17:04:00 +0000165static void collectModuleHeaderIncludes(const LangOptions &LangOpts,
Douglas Gregor752769f2012-01-05 00:04:05 +0000166 FileManager &FileMgr,
167 ModuleMap &ModMap,
Douglas Gregor1a4761e2011-11-30 23:21:26 +0000168 clang::Module *Module,
Argyrios Kyrtzidis2a857182012-10-10 02:12:39 +0000169 SmallVectorImpl<char> &Includes) {
Douglas Gregor51f564f2011-12-31 04:05:44 +0000170 // Don't collect any headers for unavailable modules.
171 if (!Module->isAvailable())
172 return;
173
Douglas Gregor8075ce62011-12-06 17:15:11 +0000174 // Add includes for each of these headers.
Lawrence Crowlbc3f6282013-06-20 21:14:14 +0000175 for (unsigned I = 0, N = Module->NormalHeaders.size(); I != N; ++I) {
176 const FileEntry *Header = Module->NormalHeaders[I];
Argyrios Kyrtzidisc1d22392013-03-13 21:13:43 +0000177 Module->addTopHeader(Header);
Argyrios Kyrtzidis2a857182012-10-10 02:12:39 +0000178 addHeaderInclude(Header, Includes, LangOpts);
Douglas Gregor2f04f182012-02-02 18:42:48 +0000179 }
Lawrence Crowlbc3f6282013-06-20 21:14:14 +0000180 // Note that Module->PrivateHeaders will not be a TopHeader.
Douglas Gregor8075ce62011-12-06 17:15:11 +0000181
Douglas Gregor10694ce2011-12-08 17:39:04 +0000182 if (const FileEntry *UmbrellaHeader = Module->getUmbrellaHeader()) {
Argyrios Kyrtzidisc1d22392013-03-13 21:13:43 +0000183 Module->addTopHeader(UmbrellaHeader);
Douglas Gregor2f04f182012-02-02 18:42:48 +0000184 if (Module->Parent) {
185 // Include the umbrella header for submodules.
Argyrios Kyrtzidis2a857182012-10-10 02:12:39 +0000186 addHeaderInclude(UmbrellaHeader, Includes, LangOpts);
Douglas Gregor2f04f182012-02-02 18:42:48 +0000187 }
Douglas Gregor77d029f2011-12-08 19:11:24 +0000188 } else if (const DirectoryEntry *UmbrellaDir = Module->getUmbrellaDir()) {
Douglas Gregor752769f2012-01-05 00:04:05 +0000189 // Add all of the headers we find in this subdirectory.
Douglas Gregor77d029f2011-12-08 19:11:24 +0000190 llvm::error_code EC;
Dylan Noblesmithf7ccbad2012-02-05 02:13:05 +0000191 SmallString<128> DirNative;
Douglas Gregor77d029f2011-12-08 19:11:24 +0000192 llvm::sys::path::native(UmbrellaDir->getName(), DirNative);
Douglas Gregor3b29bb92011-12-12 19:13:53 +0000193 for (llvm::sys::fs::recursive_directory_iterator Dir(DirNative.str(), EC),
194 DirEnd;
Douglas Gregor77d029f2011-12-08 19:11:24 +0000195 Dir != DirEnd && !EC; Dir.increment(EC)) {
196 // Check whether this entry has an extension typically associated with
197 // headers.
198 if (!llvm::StringSwitch<bool>(llvm::sys::path::extension(Dir->path()))
199 .Cases(".h", ".H", ".hh", ".hpp", true)
200 .Default(false))
201 continue;
202
Douglas Gregor752769f2012-01-05 00:04:05 +0000203 // If this header is marked 'unavailable' in this module, don't include
204 // it.
Argyrios Kyrtzidisc7782d92012-10-05 00:22:33 +0000205 if (const FileEntry *Header = FileMgr.getFile(Dir->path())) {
Douglas Gregor752769f2012-01-05 00:04:05 +0000206 if (ModMap.isHeaderInUnavailableModule(Header))
207 continue;
Argyrios Kyrtzidisc1d22392013-03-13 21:13:43 +0000208 Module->addTopHeader(Header);
Argyrios Kyrtzidisc7782d92012-10-05 00:22:33 +0000209 }
Douglas Gregor752769f2012-01-05 00:04:05 +0000210
Douglas Gregor2f04f182012-02-02 18:42:48 +0000211 // Include this header umbrella header for submodules.
Argyrios Kyrtzidis2a857182012-10-10 02:12:39 +0000212 addHeaderInclude(Dir->path(), Includes, LangOpts);
Douglas Gregor77d029f2011-12-08 19:11:24 +0000213 }
Douglas Gregor261e75b2011-11-16 17:04:00 +0000214 }
215
216 // Recurse into submodules.
Douglas Gregorb7a78192012-01-04 23:32:19 +0000217 for (clang::Module::submodule_iterator Sub = Module->submodule_begin(),
218 SubEnd = Module->submodule_end();
Douglas Gregor8075ce62011-12-06 17:15:11 +0000219 Sub != SubEnd; ++Sub)
Douglas Gregor2f04f182012-02-02 18:42:48 +0000220 collectModuleHeaderIncludes(LangOpts, FileMgr, ModMap, *Sub, Includes);
Douglas Gregor261e75b2011-11-16 17:04:00 +0000221}
222
Douglas Gregordb1cde72011-11-16 00:09:06 +0000223bool GenerateModuleAction::BeginSourceFileAction(CompilerInstance &CI,
224 StringRef Filename) {
225 // Find the module map file.
226 const FileEntry *ModuleMap = CI.getFileManager().getFile(Filename);
227 if (!ModuleMap) {
228 CI.getDiagnostics().Report(diag::err_module_map_not_found)
229 << Filename;
230 return false;
231 }
232
233 // Parse the module map file.
234 HeaderSearch &HS = CI.getPreprocessor().getHeaderSearchInfo();
235 if (HS.loadModuleMapFile(ModuleMap))
236 return false;
237
238 if (CI.getLangOpts().CurrentModule.empty()) {
239 CI.getDiagnostics().Report(diag::err_missing_module_name);
240
241 // FIXME: Eventually, we could consider asking whether there was just
242 // a single module described in the module map, and use that as a
243 // default. Then it would be fairly trivial to just "compile" a module
244 // map with a single module (the common case).
245 return false;
246 }
247
248 // Dig out the module definition.
Douglas Gregore434ec72012-01-29 17:08:11 +0000249 Module = HS.lookupModule(CI.getLangOpts().CurrentModule,
250 /*AllowSearch=*/false);
Douglas Gregordb1cde72011-11-16 00:09:06 +0000251 if (!Module) {
252 CI.getDiagnostics().Report(diag::err_missing_module)
253 << CI.getLangOpts().CurrentModule << Filename;
254
255 return false;
256 }
Douglas Gregor51f564f2011-12-31 04:05:44 +0000257
258 // Check whether we can build this module at all.
259 StringRef Feature;
Douglas Gregordc58aa72012-01-30 06:01:29 +0000260 if (!Module->isAvailable(CI.getLangOpts(), CI.getTarget(), Feature)) {
Douglas Gregor51f564f2011-12-31 04:05:44 +0000261 CI.getDiagnostics().Report(diag::err_module_unavailable)
262 << Module->getFullModuleName()
263 << Feature;
264
265 return false;
266 }
267
Argyrios Kyrtzidis2a857182012-10-10 02:12:39 +0000268 FileManager &FileMgr = CI.getFileManager();
269
Douglas Gregor261e75b2011-11-16 17:04:00 +0000270 // Collect the set of #includes we need to build the module.
Dylan Noblesmithf7ccbad2012-02-05 02:13:05 +0000271 SmallString<256> HeaderContents;
Argyrios Kyrtzidis2a857182012-10-10 02:12:39 +0000272 if (const FileEntry *UmbrellaHeader = Module->getUmbrellaHeader())
273 addHeaderInclude(UmbrellaHeader, HeaderContents, CI.getLangOpts());
274 collectModuleHeaderIncludes(CI.getLangOpts(), FileMgr,
Douglas Gregor752769f2012-01-05 00:04:05 +0000275 CI.getPreprocessor().getHeaderSearchInfo().getModuleMap(),
Douglas Gregor2f04f182012-02-02 18:42:48 +0000276 Module, HeaderContents);
Douglas Gregor261e75b2011-11-16 17:04:00 +0000277
Argyrios Kyrtzidis992d9172012-11-15 18:57:27 +0000278 llvm::MemoryBuffer *InputBuffer =
279 llvm::MemoryBuffer::getMemBufferCopy(HeaderContents,
280 Module::getModuleInputBufferName());
281 // Ownership of InputBuffer will be transfered to the SourceManager.
282 setCurrentInput(FrontendInputFile(InputBuffer, getCurrentFileKind(),
Douglas Gregora1f1fad2012-01-27 19:52:33 +0000283 Module->IsSystem));
Douglas Gregordb1cde72011-11-16 00:09:06 +0000284 return true;
285}
286
287bool GenerateModuleAction::ComputeASTConsumerArguments(CompilerInstance &CI,
288 StringRef InFile,
289 std::string &Sysroot,
290 std::string &OutputFile,
291 raw_ostream *&OS) {
292 // If no output file was provided, figure out where this module would go
293 // in the module cache.
294 if (CI.getFrontendOpts().OutputFile.empty()) {
295 HeaderSearch &HS = CI.getPreprocessor().getHeaderSearchInfo();
Dylan Noblesmithf7ccbad2012-02-05 02:13:05 +0000296 SmallString<256> ModuleFileName(HS.getModuleCachePath());
Douglas Gregordb1cde72011-11-16 00:09:06 +0000297 llvm::sys::path::append(ModuleFileName,
298 CI.getLangOpts().CurrentModule + ".pcm");
299 CI.getFrontendOpts().OutputFile = ModuleFileName.str();
300 }
301
302 // We use createOutputFile here because this is exposed via libclang, and we
303 // must disable the RemoveFileOnSignal behavior.
304 // We use a temporary to avoid race conditions.
305 OS = CI.createOutputFile(CI.getFrontendOpts().OutputFile, /*Binary=*/true,
306 /*RemoveFileOnSignal=*/false, InFile,
Daniel Dunbar12f28ab2012-03-03 00:36:02 +0000307 /*Extension=*/"", /*useTemporary=*/true,
308 /*CreateMissingDirectories=*/true);
Douglas Gregordb1cde72011-11-16 00:09:06 +0000309 if (!OS)
310 return true;
311
312 OutputFile = CI.getFrontendOpts().OutputFile;
313 return false;
314}
315
Daniel Dunbar8305d012009-11-14 10:42:46 +0000316ASTConsumer *SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000317 StringRef InFile) {
Daniel Dunbar8305d012009-11-14 10:42:46 +0000318 return new ASTConsumer();
319}
320
Douglas Gregorc544ba02013-03-27 16:47:18 +0000321ASTConsumer *DumpModuleInfoAction::CreateASTConsumer(CompilerInstance &CI,
322 StringRef InFile) {
323 return new ASTConsumer();
324}
325
326namespace {
327 /// \brief AST reader listener that dumps module information for a module
328 /// file.
329 class DumpModuleInfoListener : public ASTReaderListener {
330 llvm::raw_ostream &Out;
331
332 public:
333 DumpModuleInfoListener(llvm::raw_ostream &Out) : Out(Out) { }
334
335#define DUMP_BOOLEAN(Value, Text) \
336 Out.indent(4) << Text << ": " << (Value? "Yes" : "No") << "\n"
337
338 virtual bool ReadFullVersionInformation(StringRef FullVersion) {
339 Out.indent(2)
340 << "Generated by "
341 << (FullVersion == getClangFullRepositoryVersion()? "this"
342 : "a different")
343 << " Clang: " << FullVersion << "\n";
344 return ASTReaderListener::ReadFullVersionInformation(FullVersion);
345 }
346
347 virtual bool ReadLanguageOptions(const LangOptions &LangOpts,
348 bool Complain) {
349 Out.indent(2) << "Language options:\n";
350#define LANGOPT(Name, Bits, Default, Description) \
351 DUMP_BOOLEAN(LangOpts.Name, Description);
352#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
353 Out.indent(4) << Description << ": " \
354 << static_cast<unsigned>(LangOpts.get##Name()) << "\n";
355#define VALUE_LANGOPT(Name, Bits, Default, Description) \
356 Out.indent(4) << Description << ": " << LangOpts.Name << "\n";
357#define BENIGN_LANGOPT(Name, Bits, Default, Description)
358#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
359#include "clang/Basic/LangOptions.def"
360 return false;
361 }
362
363 virtual bool ReadTargetOptions(const TargetOptions &TargetOpts,
364 bool Complain) {
365 Out.indent(2) << "Target options:\n";
366 Out.indent(4) << " Triple: " << TargetOpts.Triple << "\n";
367 Out.indent(4) << " CPU: " << TargetOpts.CPU << "\n";
368 Out.indent(4) << " ABI: " << TargetOpts.ABI << "\n";
369 Out.indent(4) << " C++ ABI: " << TargetOpts.CXXABI << "\n";
370 Out.indent(4) << " Linker version: " << TargetOpts.LinkerVersion << "\n";
371
372 if (!TargetOpts.FeaturesAsWritten.empty()) {
373 Out.indent(4) << "Target features:\n";
374 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size();
375 I != N; ++I) {
376 Out.indent(6) << TargetOpts.FeaturesAsWritten[I] << "\n";
377 }
378 }
379
380 return false;
381 }
382
383 virtual bool ReadHeaderSearchOptions(const HeaderSearchOptions &HSOpts,
384 bool Complain) {
385 Out.indent(2) << "Header search options:\n";
386 Out.indent(4) << "System root [-isysroot=]: '" << HSOpts.Sysroot << "'\n";
387 DUMP_BOOLEAN(HSOpts.UseBuiltinIncludes,
388 "Use builtin include directories [-nobuiltininc]");
389 DUMP_BOOLEAN(HSOpts.UseStandardSystemIncludes,
390 "Use standard system include directories [-nostdinc]");
391 DUMP_BOOLEAN(HSOpts.UseStandardCXXIncludes,
392 "Use standard C++ include directories [-nostdinc++]");
393 DUMP_BOOLEAN(HSOpts.UseLibcxx,
394 "Use libc++ (rather than libstdc++) [-stdlib=]");
395 return false;
396 }
397
398 virtual bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
399 bool Complain,
400 std::string &SuggestedPredefines) {
401 Out.indent(2) << "Preprocessor options:\n";
402 DUMP_BOOLEAN(PPOpts.UsePredefines,
403 "Uses compiler/target-specific predefines [-undef]");
404 DUMP_BOOLEAN(PPOpts.DetailedRecord,
405 "Uses detailed preprocessing record (for indexing)");
406
407 if (!PPOpts.Macros.empty()) {
408 Out.indent(4) << "Predefined macros:\n";
409 }
410
411 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
412 I = PPOpts.Macros.begin(), IEnd = PPOpts.Macros.end();
413 I != IEnd; ++I) {
414 Out.indent(6);
415 if (I->second)
416 Out << "-U";
417 else
418 Out << "-D";
419 Out << I->first << "\n";
420 }
421 return false;
422 }
423#undef DUMP_BOOLEAN
424 };
425}
426
427void DumpModuleInfoAction::ExecuteAction() {
428 // Set up the output file.
429 llvm::OwningPtr<llvm::raw_fd_ostream> OutFile;
430 StringRef OutputFileName = getCompilerInstance().getFrontendOpts().OutputFile;
431 if (!OutputFileName.empty() && OutputFileName != "-") {
432 std::string ErrorInfo;
433 OutFile.reset(new llvm::raw_fd_ostream(OutputFileName.str().c_str(),
434 ErrorInfo));
435 }
436 llvm::raw_ostream &Out = OutFile.get()? *OutFile.get() : llvm::outs();
437
438 Out << "Information for module file '" << getCurrentFile() << "':\n";
439 DumpModuleInfoListener Listener(Out);
440 ASTReader::readASTFileControlBlock(getCurrentFile(),
441 getCompilerInstance().getFileManager(),
442 Listener);
443}
444
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000445//===----------------------------------------------------------------------===//
446// Preprocessor Actions
447//===----------------------------------------------------------------------===//
448
449void DumpRawTokensAction::ExecuteAction() {
450 Preprocessor &PP = getCompilerInstance().getPreprocessor();
451 SourceManager &SM = PP.getSourceManager();
452
453 // Start lexing the specified input file.
Chris Lattner6e290142009-11-30 04:18:44 +0000454 const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
David Blaikie4e4d0842012-03-11 07:00:24 +0000455 Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOpts());
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000456 RawLex.SetKeepWhitespaceMode(true);
457
458 Token RawTok;
459 RawLex.LexFromRawLexer(RawTok);
460 while (RawTok.isNot(tok::eof)) {
461 PP.DumpToken(RawTok, true);
Daniel Dunbar33f57f82009-11-25 10:27:48 +0000462 llvm::errs() << "\n";
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000463 RawLex.LexFromRawLexer(RawTok);
464 }
465}
466
467void DumpTokensAction::ExecuteAction() {
468 Preprocessor &PP = getCompilerInstance().getPreprocessor();
469 // Start preprocessing the specified input file.
470 Token Tok;
Chris Lattnere127a0d2010-04-20 20:35:58 +0000471 PP.EnterMainSourceFile();
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000472 do {
473 PP.Lex(Tok);
474 PP.DumpToken(Tok, true);
Daniel Dunbar33f57f82009-11-25 10:27:48 +0000475 llvm::errs() << "\n";
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000476 } while (Tok.isNot(tok::eof));
477}
478
479void GeneratePTHAction::ExecuteAction() {
480 CompilerInstance &CI = getCompilerInstance();
481 if (CI.getFrontendOpts().OutputFile.empty() ||
482 CI.getFrontendOpts().OutputFile == "-") {
483 // FIXME: Don't fail this way.
484 // FIXME: Verify that we can actually seek in the given file.
Chris Lattner83e7a782010-04-07 22:58:06 +0000485 llvm::report_fatal_error("PTH requires a seekable file for output!");
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000486 }
487 llvm::raw_fd_ostream *OS =
488 CI.createDefaultOutputFile(true, getCurrentFile());
Daniel Dunbar36043592009-12-03 09:13:30 +0000489 if (!OS) return;
490
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000491 CacheTokens(CI.getPreprocessor(), OS);
492}
493
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000494void PreprocessOnlyAction::ExecuteAction() {
495 Preprocessor &PP = getCompilerInstance().getPreprocessor();
496
Daniel Dunbarc72cc502010-06-11 20:10:12 +0000497 // Ignore unknown pragmas.
Argyrios Kyrtzidis9b36c3f2010-07-13 09:07:17 +0000498 PP.AddPragmaHandler(new EmptyPragmaHandler());
Daniel Dunbarc72cc502010-06-11 20:10:12 +0000499
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000500 Token Tok;
501 // Start parsing the specified input file.
Chris Lattnere127a0d2010-04-20 20:35:58 +0000502 PP.EnterMainSourceFile();
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000503 do {
504 PP.Lex(Tok);
505 } while (Tok.isNot(tok::eof));
506}
507
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000508void PrintPreprocessedAction::ExecuteAction() {
509 CompilerInstance &CI = getCompilerInstance();
Douglas Gregor10efbaf2011-09-23 23:43:36 +0000510 // Output file may need to be set to 'Binary', to avoid converting Unix style
Steve Naroffd57d7c02010-01-05 17:33:23 +0000511 // line feeds (<LF>) to Microsoft style line feeds (<CR><LF>).
Douglas Gregor10efbaf2011-09-23 23:43:36 +0000512 //
513 // Look to see what type of line endings the file uses. If there's a
514 // CRLF, then we won't open the file up in binary mode. If there is
515 // just an LF or CR, then we will open the file up in binary mode.
516 // In this fashion, the output format should match the input format, unless
517 // the input format has inconsistent line endings.
518 //
519 // This should be a relatively fast operation since most files won't have
520 // all of their source code on a single line. However, that is still a
521 // concern, so if we scan for too long, we'll just assume the file should
522 // be opened in binary mode.
523 bool BinaryMode = true;
524 bool InvalidFile = false;
525 const SourceManager& SM = CI.getSourceManager();
526 const llvm::MemoryBuffer *Buffer = SM.getBuffer(SM.getMainFileID(),
527 &InvalidFile);
528 if (!InvalidFile) {
529 const char *cur = Buffer->getBufferStart();
530 const char *end = Buffer->getBufferEnd();
531 const char *next = (cur != end) ? cur + 1 : end;
532
533 // Limit ourselves to only scanning 256 characters into the source
534 // file. This is mostly a sanity check in case the file has no
535 // newlines whatsoever.
536 if (end - cur > 256) end = cur + 256;
537
538 while (next < end) {
539 if (*cur == 0x0D) { // CR
540 if (*next == 0x0A) // CRLF
541 BinaryMode = false;
542
543 break;
544 } else if (*cur == 0x0A) // LF
545 break;
546
547 ++cur, ++next;
548 }
549 }
550
551 raw_ostream *OS = CI.createDefaultOutputFile(BinaryMode, getCurrentFile());
Daniel Dunbar36043592009-12-03 09:13:30 +0000552 if (!OS) return;
553
Daniel Dunbar5f3b9972009-11-14 10:42:57 +0000554 DoPrintPreprocessedInput(CI.getPreprocessor(), OS,
555 CI.getPreprocessorOutputOpts());
556}
Douglas Gregorf033f1d2010-07-20 20:18:03 +0000557
558void PrintPreambleAction::ExecuteAction() {
559 switch (getCurrentFileKind()) {
560 case IK_C:
561 case IK_CXX:
562 case IK_ObjC:
563 case IK_ObjCXX:
564 case IK_OpenCL:
Peter Collingbourne895fcca2010-12-01 03:15:20 +0000565 case IK_CUDA:
Douglas Gregorf033f1d2010-07-20 20:18:03 +0000566 break;
567
568 case IK_None:
569 case IK_Asm:
570 case IK_PreprocessedC:
571 case IK_PreprocessedCXX:
572 case IK_PreprocessedObjC:
573 case IK_PreprocessedObjCXX:
574 case IK_AST:
575 case IK_LLVM_IR:
576 // We can't do anything with these.
577 return;
578 }
579
Argyrios Kyrtzidis389db162010-11-03 22:45:23 +0000580 CompilerInstance &CI = getCompilerInstance();
581 llvm::MemoryBuffer *Buffer
Chris Lattner39b49bc2010-11-23 08:35:12 +0000582 = CI.getFileManager().getBufferForFile(getCurrentFile());
Douglas Gregorf033f1d2010-07-20 20:18:03 +0000583 if (Buffer) {
Argyrios Kyrtzidis03c107a2011-08-25 20:39:19 +0000584 unsigned Preamble = Lexer::ComputePreamble(Buffer, CI.getLangOpts()).first;
Douglas Gregorf033f1d2010-07-20 20:18:03 +0000585 llvm::outs().write(Buffer->getBufferStart(), Preamble);
586 delete Buffer;
587 }
588}