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Argyrios Kyrtzidis4b562cf2009-06-20 08:27:14 +00001//===--- ASTUnit.cpp - ASTUnit utility ------------------------------------===//
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// ASTUnit Implementation.
11//
12//===----------------------------------------------------------------------===//
13
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +000014#include "clang/Frontend/ASTUnit.h"
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +000015#include "clang/AST/ASTContext.h"
Daniel Dunbar521bf9c2009-12-01 09:51:01 +000016#include "clang/AST/ASTConsumer.h"
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +000017#include "clang/AST/DeclVisitor.h"
Douglas Gregorf5586f62010-08-16 18:08:11 +000018#include "clang/AST/TypeOrdering.h"
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +000019#include "clang/AST/StmtVisitor.h"
Daniel Dunbar7b556682009-12-02 03:23:45 +000020#include "clang/Driver/Compilation.h"
21#include "clang/Driver/Driver.h"
22#include "clang/Driver/Job.h"
Argyrios Kyrtzidis4e03c2b2011-03-07 22:45:01 +000023#include "clang/Driver/ArgList.h"
24#include "clang/Driver/Options.h"
Daniel Dunbar7b556682009-12-02 03:23:45 +000025#include "clang/Driver/Tool.h"
Daniel Dunbar521bf9c2009-12-01 09:51:01 +000026#include "clang/Frontend/CompilerInstance.h"
27#include "clang/Frontend/FrontendActions.h"
Daniel Dunbar7b556682009-12-02 03:23:45 +000028#include "clang/Frontend/FrontendDiagnostic.h"
Daniel Dunbar521bf9c2009-12-01 09:51:01 +000029#include "clang/Frontend/FrontendOptions.h"
Argyrios Kyrtzidis6f3ce972011-11-28 04:56:00 +000030#include "clang/Frontend/MultiplexConsumer.h"
Douglas Gregor32be4a52010-10-11 21:37:58 +000031#include "clang/Frontend/Utils.h"
Sebastian Redl6ab7cd82010-08-18 23:57:17 +000032#include "clang/Serialization/ASTReader.h"
Sebastian Redl7faa2ec2010-08-18 23:56:37 +000033#include "clang/Serialization/ASTWriter.h"
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +000034#include "clang/Lex/HeaderSearch.h"
35#include "clang/Lex/Preprocessor.h"
Daniel Dunbard58c03f2009-11-15 06:48:46 +000036#include "clang/Basic/TargetOptions.h"
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +000037#include "clang/Basic/TargetInfo.h"
38#include "clang/Basic/Diagnostic.h"
Chris Lattner7f9fc3f2011-03-23 04:04:01 +000039#include "llvm/ADT/ArrayRef.h"
Douglas Gregor9b7db622011-02-16 18:16:54 +000040#include "llvm/ADT/StringExtras.h"
Douglas Gregor349d38c2010-08-16 23:08:34 +000041#include "llvm/ADT/StringSet.h"
Douglas Gregor1fd9e0d2010-12-07 00:05:48 +000042#include "llvm/Support/Atomic.h"
Douglas Gregor4db64a42010-01-23 00:14:00 +000043#include "llvm/Support/MemoryBuffer.h"
Michael J. Spencer03013fa2010-11-29 18:12:39 +000044#include "llvm/Support/Host.h"
45#include "llvm/Support/Path.h"
Douglas Gregordf95a132010-08-09 20:45:32 +000046#include "llvm/Support/raw_ostream.h"
Douglas Gregor385103b2010-07-30 20:58:08 +000047#include "llvm/Support/Timer.h"
Argyrios Kyrtzidis9cca68d2011-07-21 18:44:49 +000048#include "llvm/Support/FileSystem.h"
Argyrios Kyrtzidisa696ece2011-10-10 21:57:12 +000049#include "llvm/Support/Mutex.h"
Ted Kremeneke055f8a2011-10-27 19:44:25 +000050#include "llvm/Support/MutexGuard.h"
Ted Kremenekb547eeb2011-03-18 02:06:56 +000051#include "llvm/Support/CrashRecoveryContext.h"
Douglas Gregor44c181a2010-07-23 00:33:23 +000052#include <cstdlib>
Zhongxing Xuad23ebe2010-07-23 02:15:08 +000053#include <cstdio>
Douglas Gregorcc5888d2010-07-31 00:40:00 +000054#include <sys/stat.h>
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +000055using namespace clang;
56
Douglas Gregor213f18b2010-10-28 15:44:59 +000057using llvm::TimeRecord;
58
59namespace {
60 class SimpleTimer {
61 bool WantTiming;
62 TimeRecord Start;
63 std::string Output;
64
Benjamin Krameredfb7ec2010-11-09 20:00:56 +000065 public:
Douglas Gregor9dba61a2010-11-01 13:48:43 +000066 explicit SimpleTimer(bool WantTiming) : WantTiming(WantTiming) {
Douglas Gregor213f18b2010-10-28 15:44:59 +000067 if (WantTiming)
Benjamin Krameredfb7ec2010-11-09 20:00:56 +000068 Start = TimeRecord::getCurrentTime();
Douglas Gregor213f18b2010-10-28 15:44:59 +000069 }
70
Chris Lattner5f9e2722011-07-23 10:55:15 +000071 void setOutput(const Twine &Output) {
Douglas Gregor213f18b2010-10-28 15:44:59 +000072 if (WantTiming)
Benjamin Krameredfb7ec2010-11-09 20:00:56 +000073 this->Output = Output.str();
Douglas Gregor213f18b2010-10-28 15:44:59 +000074 }
75
Douglas Gregor213f18b2010-10-28 15:44:59 +000076 ~SimpleTimer() {
77 if (WantTiming) {
78 TimeRecord Elapsed = TimeRecord::getCurrentTime();
79 Elapsed -= Start;
80 llvm::errs() << Output << ':';
81 Elapsed.print(Elapsed, llvm::errs());
82 llvm::errs() << '\n';
83 }
84 }
85 };
Ted Kremenek1872b312011-10-27 17:55:18 +000086
87 struct OnDiskData {
88 /// \brief The file in which the precompiled preamble is stored.
89 std::string PreambleFile;
90
91 /// \brief Temporary files that should be removed when the ASTUnit is
92 /// destroyed.
93 SmallVector<llvm::sys::Path, 4> TemporaryFiles;
94
95 /// \brief Erase temporary files.
96 void CleanTemporaryFiles();
97
98 /// \brief Erase the preamble file.
99 void CleanPreambleFile();
100
101 /// \brief Erase temporary files and the preamble file.
102 void Cleanup();
103 };
104}
105
Ted Kremeneke055f8a2011-10-27 19:44:25 +0000106static llvm::sys::SmartMutex<false> &getOnDiskMutex() {
107 static llvm::sys::SmartMutex<false> M(/* recursive = */ true);
108 return M;
109}
110
Ted Kremenek1872b312011-10-27 17:55:18 +0000111static void cleanupOnDiskMapAtExit(void);
112
113typedef llvm::DenseMap<const ASTUnit *, OnDiskData *> OnDiskDataMap;
114static OnDiskDataMap &getOnDiskDataMap() {
115 static OnDiskDataMap M;
116 static bool hasRegisteredAtExit = false;
117 if (!hasRegisteredAtExit) {
118 hasRegisteredAtExit = true;
119 atexit(cleanupOnDiskMapAtExit);
120 }
121 return M;
122}
123
124static void cleanupOnDiskMapAtExit(void) {
Ted Kremeneke055f8a2011-10-27 19:44:25 +0000125 // No mutex required here since we are leaving the program.
Ted Kremenek1872b312011-10-27 17:55:18 +0000126 OnDiskDataMap &M = getOnDiskDataMap();
127 for (OnDiskDataMap::iterator I = M.begin(), E = M.end(); I != E; ++I) {
128 // We don't worry about freeing the memory associated with OnDiskDataMap.
129 // All we care about is erasing stale files.
130 I->second->Cleanup();
131 }
132}
133
134static OnDiskData &getOnDiskData(const ASTUnit *AU) {
Ted Kremeneke055f8a2011-10-27 19:44:25 +0000135 // We require the mutex since we are modifying the structure of the
136 // DenseMap.
137 llvm::MutexGuard Guard(getOnDiskMutex());
Ted Kremenek1872b312011-10-27 17:55:18 +0000138 OnDiskDataMap &M = getOnDiskDataMap();
139 OnDiskData *&D = M[AU];
140 if (!D)
141 D = new OnDiskData();
142 return *D;
143}
144
145static void erasePreambleFile(const ASTUnit *AU) {
146 getOnDiskData(AU).CleanPreambleFile();
147}
148
149static void removeOnDiskEntry(const ASTUnit *AU) {
Ted Kremeneke055f8a2011-10-27 19:44:25 +0000150 // We require the mutex since we are modifying the structure of the
151 // DenseMap.
152 llvm::MutexGuard Guard(getOnDiskMutex());
Ted Kremenek1872b312011-10-27 17:55:18 +0000153 OnDiskDataMap &M = getOnDiskDataMap();
154 OnDiskDataMap::iterator I = M.find(AU);
155 if (I != M.end()) {
156 I->second->Cleanup();
157 delete I->second;
158 M.erase(AU);
159 }
160}
161
162static void setPreambleFile(const ASTUnit *AU, llvm::StringRef preambleFile) {
163 getOnDiskData(AU).PreambleFile = preambleFile;
164}
165
166static const std::string &getPreambleFile(const ASTUnit *AU) {
167 return getOnDiskData(AU).PreambleFile;
168}
169
170void OnDiskData::CleanTemporaryFiles() {
171 for (unsigned I = 0, N = TemporaryFiles.size(); I != N; ++I)
172 TemporaryFiles[I].eraseFromDisk();
173 TemporaryFiles.clear();
174}
175
176void OnDiskData::CleanPreambleFile() {
177 if (!PreambleFile.empty()) {
178 llvm::sys::Path(PreambleFile).eraseFromDisk();
179 PreambleFile.clear();
180 }
181}
182
183void OnDiskData::Cleanup() {
184 CleanTemporaryFiles();
185 CleanPreambleFile();
186}
187
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +0000188void ASTUnit::clearFileLevelDecls() {
189 for (FileDeclsTy::iterator
190 I = FileDecls.begin(), E = FileDecls.end(); I != E; ++I)
191 delete I->second;
192 FileDecls.clear();
193}
194
Ted Kremenek1872b312011-10-27 17:55:18 +0000195void ASTUnit::CleanTemporaryFiles() {
196 getOnDiskData(this).CleanTemporaryFiles();
197}
198
199void ASTUnit::addTemporaryFile(const llvm::sys::Path &TempFile) {
200 getOnDiskData(this).TemporaryFiles.push_back(TempFile);
Douglas Gregor213f18b2010-10-28 15:44:59 +0000201}
202
Douglas Gregoreababfb2010-08-04 05:53:38 +0000203/// \brief After failing to build a precompiled preamble (due to
204/// errors in the source that occurs in the preamble), the number of
205/// reparses during which we'll skip even trying to precompile the
206/// preamble.
207const unsigned DefaultPreambleRebuildInterval = 5;
208
Douglas Gregore3c60a72010-11-17 00:13:31 +0000209/// \brief Tracks the number of ASTUnit objects that are currently active.
210///
211/// Used for debugging purposes only.
Douglas Gregor1fd9e0d2010-12-07 00:05:48 +0000212static llvm::sys::cas_flag ActiveASTUnitObjects;
Douglas Gregore3c60a72010-11-17 00:13:31 +0000213
Douglas Gregor3687e9d2010-04-05 21:10:19 +0000214ASTUnit::ASTUnit(bool _MainFileIsAST)
Argyrios Kyrtzidis62ba9f62011-11-01 17:14:15 +0000215 : Reader(0), OnlyLocalDecls(false), CaptureDiagnostics(false),
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000216 MainFileIsAST(_MainFileIsAST),
Douglas Gregor467dc882011-08-25 22:30:56 +0000217 TUKind(TU_Complete), WantTiming(getenv("LIBCLANG_TIMING")),
Argyrios Kyrtzidis15727dd2011-03-05 01:03:48 +0000218 OwnsRemappedFileBuffers(true),
Douglas Gregor213f18b2010-10-28 15:44:59 +0000219 NumStoredDiagnosticsFromDriver(0),
Douglas Gregor671947b2010-08-19 01:33:06 +0000220 PreambleRebuildCounter(0), SavedMainFileBuffer(0), PreambleBuffer(0),
Argyrios Kyrtzidis98704012011-11-29 18:18:33 +0000221 NumWarningsInPreamble(0),
Douglas Gregor727d93e2010-08-17 00:40:40 +0000222 ShouldCacheCodeCompletionResults(false),
Douglas Gregor9b7db622011-02-16 18:16:54 +0000223 CompletionCacheTopLevelHashValue(0),
224 PreambleTopLevelHashValue(0),
225 CurrentTopLevelHashValue(0),
Douglas Gregor8b1540c2010-08-19 00:45:44 +0000226 UnsafeToFree(false) {
Douglas Gregore3c60a72010-11-17 00:13:31 +0000227 if (getenv("LIBCLANG_OBJTRACKING")) {
Douglas Gregor1fd9e0d2010-12-07 00:05:48 +0000228 llvm::sys::AtomicIncrement(&ActiveASTUnitObjects);
Douglas Gregore3c60a72010-11-17 00:13:31 +0000229 fprintf(stderr, "+++ %d translation units\n", ActiveASTUnitObjects);
230 }
Douglas Gregor385103b2010-07-30 20:58:08 +0000231}
Douglas Gregor3687e9d2010-04-05 21:10:19 +0000232
Daniel Dunbar521bf9c2009-12-01 09:51:01 +0000233ASTUnit::~ASTUnit() {
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +0000234 clearFileLevelDecls();
235
Ted Kremenek1872b312011-10-27 17:55:18 +0000236 // Clean up the temporary files and the preamble file.
237 removeOnDiskEntry(this);
238
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +0000239 // Free the buffers associated with remapped files. We are required to
240 // perform this operation here because we explicitly request that the
241 // compiler instance *not* free these buffers for each invocation of the
242 // parser.
Ted Kremenek4f327862011-03-21 18:40:17 +0000243 if (Invocation.getPtr() && OwnsRemappedFileBuffers) {
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +0000244 PreprocessorOptions &PPOpts = Invocation->getPreprocessorOpts();
245 for (PreprocessorOptions::remapped_file_buffer_iterator
246 FB = PPOpts.remapped_file_buffer_begin(),
247 FBEnd = PPOpts.remapped_file_buffer_end();
248 FB != FBEnd;
249 ++FB)
250 delete FB->second;
251 }
Douglas Gregor28233422010-07-27 14:52:07 +0000252
253 delete SavedMainFileBuffer;
Douglas Gregor671947b2010-08-19 01:33:06 +0000254 delete PreambleBuffer;
255
Douglas Gregor213f18b2010-10-28 15:44:59 +0000256 ClearCachedCompletionResults();
Douglas Gregore3c60a72010-11-17 00:13:31 +0000257
258 if (getenv("LIBCLANG_OBJTRACKING")) {
Douglas Gregor1fd9e0d2010-12-07 00:05:48 +0000259 llvm::sys::AtomicDecrement(&ActiveASTUnitObjects);
Douglas Gregore3c60a72010-11-17 00:13:31 +0000260 fprintf(stderr, "--- %d translation units\n", ActiveASTUnitObjects);
261 }
Douglas Gregorabc563f2010-07-19 21:46:24 +0000262}
263
Argyrios Kyrtzidis7fe90f32012-01-17 18:48:07 +0000264void ASTUnit::setPreprocessor(Preprocessor *pp) { PP = pp; }
265
Douglas Gregor8071e422010-08-15 06:18:01 +0000266/// \brief Determine the set of code-completion contexts in which this
267/// declaration should be shown.
268static unsigned getDeclShowContexts(NamedDecl *ND,
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000269 const LangOptions &LangOpts,
270 bool &IsNestedNameSpecifier) {
271 IsNestedNameSpecifier = false;
272
Douglas Gregor8071e422010-08-15 06:18:01 +0000273 if (isa<UsingShadowDecl>(ND))
274 ND = dyn_cast<NamedDecl>(ND->getUnderlyingDecl());
275 if (!ND)
276 return 0;
277
278 unsigned Contexts = 0;
279 if (isa<TypeDecl>(ND) || isa<ObjCInterfaceDecl>(ND) ||
280 isa<ClassTemplateDecl>(ND) || isa<TemplateTemplateParmDecl>(ND)) {
281 // Types can appear in these contexts.
282 if (LangOpts.CPlusPlus || !isa<TagDecl>(ND))
283 Contexts |= (1 << (CodeCompletionContext::CCC_TopLevel - 1))
284 | (1 << (CodeCompletionContext::CCC_ObjCIvarList - 1))
285 | (1 << (CodeCompletionContext::CCC_ClassStructUnion - 1))
286 | (1 << (CodeCompletionContext::CCC_Statement - 1))
Douglas Gregor02688102010-09-14 23:59:36 +0000287 | (1 << (CodeCompletionContext::CCC_Type - 1))
288 | (1 << (CodeCompletionContext::CCC_ParenthesizedExpression - 1));
Douglas Gregor8071e422010-08-15 06:18:01 +0000289
290 // In C++, types can appear in expressions contexts (for functional casts).
291 if (LangOpts.CPlusPlus)
292 Contexts |= (1 << (CodeCompletionContext::CCC_Expression - 1));
293
294 // In Objective-C, message sends can send interfaces. In Objective-C++,
295 // all types are available due to functional casts.
296 if (LangOpts.CPlusPlus || isa<ObjCInterfaceDecl>(ND))
297 Contexts |= (1 << (CodeCompletionContext::CCC_ObjCMessageReceiver - 1));
Douglas Gregor3da626b2011-07-07 16:03:39 +0000298
299 // In Objective-C, you can only be a subclass of another Objective-C class
300 if (isa<ObjCInterfaceDecl>(ND))
Douglas Gregor0f91c8c2011-07-30 06:55:39 +0000301 Contexts |= (1 << (CodeCompletionContext::CCC_ObjCInterfaceName - 1));
Douglas Gregor8071e422010-08-15 06:18:01 +0000302
303 // Deal with tag names.
304 if (isa<EnumDecl>(ND)) {
305 Contexts |= (1 << (CodeCompletionContext::CCC_EnumTag - 1));
306
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000307 // Part of the nested-name-specifier in C++0x.
Douglas Gregor8071e422010-08-15 06:18:01 +0000308 if (LangOpts.CPlusPlus0x)
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000309 IsNestedNameSpecifier = true;
Douglas Gregor8071e422010-08-15 06:18:01 +0000310 } else if (RecordDecl *Record = dyn_cast<RecordDecl>(ND)) {
311 if (Record->isUnion())
312 Contexts |= (1 << (CodeCompletionContext::CCC_UnionTag - 1));
313 else
314 Contexts |= (1 << (CodeCompletionContext::CCC_ClassOrStructTag - 1));
315
Douglas Gregor8071e422010-08-15 06:18:01 +0000316 if (LangOpts.CPlusPlus)
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000317 IsNestedNameSpecifier = true;
Douglas Gregor52779fb2010-09-23 23:01:17 +0000318 } else if (isa<ClassTemplateDecl>(ND))
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000319 IsNestedNameSpecifier = true;
Douglas Gregor8071e422010-08-15 06:18:01 +0000320 } else if (isa<ValueDecl>(ND) || isa<FunctionTemplateDecl>(ND)) {
321 // Values can appear in these contexts.
322 Contexts = (1 << (CodeCompletionContext::CCC_Statement - 1))
323 | (1 << (CodeCompletionContext::CCC_Expression - 1))
Douglas Gregor02688102010-09-14 23:59:36 +0000324 | (1 << (CodeCompletionContext::CCC_ParenthesizedExpression - 1))
Douglas Gregor8071e422010-08-15 06:18:01 +0000325 | (1 << (CodeCompletionContext::CCC_ObjCMessageReceiver - 1));
326 } else if (isa<ObjCProtocolDecl>(ND)) {
327 Contexts = (1 << (CodeCompletionContext::CCC_ObjCProtocolName - 1));
Douglas Gregor3da626b2011-07-07 16:03:39 +0000328 } else if (isa<ObjCCategoryDecl>(ND)) {
329 Contexts = (1 << (CodeCompletionContext::CCC_ObjCCategoryName - 1));
Douglas Gregor8071e422010-08-15 06:18:01 +0000330 } else if (isa<NamespaceDecl>(ND) || isa<NamespaceAliasDecl>(ND)) {
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000331 Contexts = (1 << (CodeCompletionContext::CCC_Namespace - 1));
Douglas Gregor8071e422010-08-15 06:18:01 +0000332
333 // Part of the nested-name-specifier.
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000334 IsNestedNameSpecifier = true;
Douglas Gregor8071e422010-08-15 06:18:01 +0000335 }
336
337 return Contexts;
338}
339
Douglas Gregor87c08a52010-08-13 22:48:40 +0000340void ASTUnit::CacheCodeCompletionResults() {
341 if (!TheSema)
342 return;
343
Douglas Gregor213f18b2010-10-28 15:44:59 +0000344 SimpleTimer Timer(WantTiming);
Benjamin Krameredfb7ec2010-11-09 20:00:56 +0000345 Timer.setOutput("Cache global code completions for " + getMainFileName());
Douglas Gregor87c08a52010-08-13 22:48:40 +0000346
347 // Clear out the previous results.
348 ClearCachedCompletionResults();
349
350 // Gather the set of global code completions.
John McCall0a2c5e22010-08-25 06:19:51 +0000351 typedef CodeCompletionResult Result;
Chris Lattner5f9e2722011-07-23 10:55:15 +0000352 SmallVector<Result, 8> Results;
Douglas Gregor48601b32011-02-16 19:08:06 +0000353 CachedCompletionAllocator = new GlobalCodeCompletionAllocator;
Argyrios Kyrtzidis28a83f52012-04-10 17:23:48 +0000354 TheSema->GatherGlobalCodeCompletions(*CachedCompletionAllocator,
355 getCodeCompletionTUInfo(), Results);
Douglas Gregor87c08a52010-08-13 22:48:40 +0000356
357 // Translate global code completions into cached completions.
Douglas Gregorf5586f62010-08-16 18:08:11 +0000358 llvm::DenseMap<CanQualType, unsigned> CompletionTypes;
359
Douglas Gregor87c08a52010-08-13 22:48:40 +0000360 for (unsigned I = 0, N = Results.size(); I != N; ++I) {
361 switch (Results[I].Kind) {
Douglas Gregor8071e422010-08-15 06:18:01 +0000362 case Result::RK_Declaration: {
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000363 bool IsNestedNameSpecifier = false;
Douglas Gregor8071e422010-08-15 06:18:01 +0000364 CachedCodeCompletionResult CachedResult;
Douglas Gregor218937c2011-02-01 19:23:04 +0000365 CachedResult.Completion = Results[I].CreateCodeCompletionString(*TheSema,
Argyrios Kyrtzidis28a83f52012-04-10 17:23:48 +0000366 *CachedCompletionAllocator,
367 getCodeCompletionTUInfo());
Douglas Gregor8071e422010-08-15 06:18:01 +0000368 CachedResult.ShowInContexts = getDeclShowContexts(Results[I].Declaration,
David Blaikie4e4d0842012-03-11 07:00:24 +0000369 Ctx->getLangOpts(),
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000370 IsNestedNameSpecifier);
Douglas Gregor8071e422010-08-15 06:18:01 +0000371 CachedResult.Priority = Results[I].Priority;
372 CachedResult.Kind = Results[I].CursorKind;
Douglas Gregor58ddb602010-08-23 23:00:57 +0000373 CachedResult.Availability = Results[I].Availability;
Douglas Gregorc4421e92010-08-16 16:46:30 +0000374
Douglas Gregorf5586f62010-08-16 18:08:11 +0000375 // Keep track of the type of this completion in an ASTContext-agnostic
376 // way.
Douglas Gregorc4421e92010-08-16 16:46:30 +0000377 QualType UsageType = getDeclUsageType(*Ctx, Results[I].Declaration);
Douglas Gregorf5586f62010-08-16 18:08:11 +0000378 if (UsageType.isNull()) {
Douglas Gregorc4421e92010-08-16 16:46:30 +0000379 CachedResult.TypeClass = STC_Void;
Douglas Gregorf5586f62010-08-16 18:08:11 +0000380 CachedResult.Type = 0;
381 } else {
382 CanQualType CanUsageType
383 = Ctx->getCanonicalType(UsageType.getUnqualifiedType());
384 CachedResult.TypeClass = getSimplifiedTypeClass(CanUsageType);
385
386 // Determine whether we have already seen this type. If so, we save
387 // ourselves the work of formatting the type string by using the
388 // temporary, CanQualType-based hash table to find the associated value.
389 unsigned &TypeValue = CompletionTypes[CanUsageType];
390 if (TypeValue == 0) {
391 TypeValue = CompletionTypes.size();
392 CachedCompletionTypes[QualType(CanUsageType).getAsString()]
393 = TypeValue;
394 }
395
396 CachedResult.Type = TypeValue;
Douglas Gregorc4421e92010-08-16 16:46:30 +0000397 }
Douglas Gregorf5586f62010-08-16 18:08:11 +0000398
Douglas Gregor8071e422010-08-15 06:18:01 +0000399 CachedCompletionResults.push_back(CachedResult);
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000400
401 /// Handle nested-name-specifiers in C++.
David Blaikie4e4d0842012-03-11 07:00:24 +0000402 if (TheSema->Context.getLangOpts().CPlusPlus &&
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000403 IsNestedNameSpecifier && !Results[I].StartsNestedNameSpecifier) {
404 // The contexts in which a nested-name-specifier can appear in C++.
405 unsigned NNSContexts
406 = (1 << (CodeCompletionContext::CCC_TopLevel - 1))
407 | (1 << (CodeCompletionContext::CCC_ObjCIvarList - 1))
408 | (1 << (CodeCompletionContext::CCC_ClassStructUnion - 1))
409 | (1 << (CodeCompletionContext::CCC_Statement - 1))
410 | (1 << (CodeCompletionContext::CCC_Expression - 1))
411 | (1 << (CodeCompletionContext::CCC_ObjCMessageReceiver - 1))
412 | (1 << (CodeCompletionContext::CCC_EnumTag - 1))
413 | (1 << (CodeCompletionContext::CCC_UnionTag - 1))
414 | (1 << (CodeCompletionContext::CCC_ClassOrStructTag - 1))
Douglas Gregor2ccccb32010-08-23 18:23:48 +0000415 | (1 << (CodeCompletionContext::CCC_Type - 1))
Douglas Gregor02688102010-09-14 23:59:36 +0000416 | (1 << (CodeCompletionContext::CCC_PotentiallyQualifiedName - 1))
417 | (1 << (CodeCompletionContext::CCC_ParenthesizedExpression - 1));
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000418
419 if (isa<NamespaceDecl>(Results[I].Declaration) ||
420 isa<NamespaceAliasDecl>(Results[I].Declaration))
421 NNSContexts |= (1 << (CodeCompletionContext::CCC_Namespace - 1));
422
423 if (unsigned RemainingContexts
424 = NNSContexts & ~CachedResult.ShowInContexts) {
425 // If there any contexts where this completion can be a
426 // nested-name-specifier but isn't already an option, create a
427 // nested-name-specifier completion.
428 Results[I].StartsNestedNameSpecifier = true;
Douglas Gregor218937c2011-02-01 19:23:04 +0000429 CachedResult.Completion
430 = Results[I].CreateCodeCompletionString(*TheSema,
Argyrios Kyrtzidis28a83f52012-04-10 17:23:48 +0000431 *CachedCompletionAllocator,
432 getCodeCompletionTUInfo());
Douglas Gregora5fb7c32010-08-16 23:05:20 +0000433 CachedResult.ShowInContexts = RemainingContexts;
434 CachedResult.Priority = CCP_NestedNameSpecifier;
435 CachedResult.TypeClass = STC_Void;
436 CachedResult.Type = 0;
437 CachedCompletionResults.push_back(CachedResult);
438 }
439 }
Douglas Gregor87c08a52010-08-13 22:48:40 +0000440 break;
Douglas Gregor8071e422010-08-15 06:18:01 +0000441 }
442
Douglas Gregor87c08a52010-08-13 22:48:40 +0000443 case Result::RK_Keyword:
444 case Result::RK_Pattern:
445 // Ignore keywords and patterns; we don't care, since they are so
446 // easily regenerated.
447 break;
448
449 case Result::RK_Macro: {
450 CachedCodeCompletionResult CachedResult;
Douglas Gregor218937c2011-02-01 19:23:04 +0000451 CachedResult.Completion
452 = Results[I].CreateCodeCompletionString(*TheSema,
Argyrios Kyrtzidis28a83f52012-04-10 17:23:48 +0000453 *CachedCompletionAllocator,
454 getCodeCompletionTUInfo());
Douglas Gregor87c08a52010-08-13 22:48:40 +0000455 CachedResult.ShowInContexts
456 = (1 << (CodeCompletionContext::CCC_TopLevel - 1))
457 | (1 << (CodeCompletionContext::CCC_ObjCInterface - 1))
458 | (1 << (CodeCompletionContext::CCC_ObjCImplementation - 1))
459 | (1 << (CodeCompletionContext::CCC_ObjCIvarList - 1))
460 | (1 << (CodeCompletionContext::CCC_ClassStructUnion - 1))
461 | (1 << (CodeCompletionContext::CCC_Statement - 1))
462 | (1 << (CodeCompletionContext::CCC_Expression - 1))
Douglas Gregor1fbb4472010-08-24 20:21:13 +0000463 | (1 << (CodeCompletionContext::CCC_ObjCMessageReceiver - 1))
Douglas Gregorf29c5232010-08-24 22:20:20 +0000464 | (1 << (CodeCompletionContext::CCC_MacroNameUse - 1))
Douglas Gregor02688102010-09-14 23:59:36 +0000465 | (1 << (CodeCompletionContext::CCC_PreprocessorExpression - 1))
Douglas Gregor5c722c702011-02-18 23:30:37 +0000466 | (1 << (CodeCompletionContext::CCC_ParenthesizedExpression - 1))
467 | (1 << (CodeCompletionContext::CCC_OtherWithMacros - 1));
Douglas Gregor2ccccb32010-08-23 18:23:48 +0000468
Douglas Gregor87c08a52010-08-13 22:48:40 +0000469 CachedResult.Priority = Results[I].Priority;
470 CachedResult.Kind = Results[I].CursorKind;
Douglas Gregor58ddb602010-08-23 23:00:57 +0000471 CachedResult.Availability = Results[I].Availability;
Douglas Gregor1827e102010-08-16 16:18:59 +0000472 CachedResult.TypeClass = STC_Void;
Douglas Gregorf5586f62010-08-16 18:08:11 +0000473 CachedResult.Type = 0;
Douglas Gregor87c08a52010-08-13 22:48:40 +0000474 CachedCompletionResults.push_back(CachedResult);
475 break;
476 }
477 }
Douglas Gregor87c08a52010-08-13 22:48:40 +0000478 }
Douglas Gregor9b7db622011-02-16 18:16:54 +0000479
480 // Save the current top-level hash value.
481 CompletionCacheTopLevelHashValue = CurrentTopLevelHashValue;
Douglas Gregor87c08a52010-08-13 22:48:40 +0000482}
483
484void ASTUnit::ClearCachedCompletionResults() {
Douglas Gregor87c08a52010-08-13 22:48:40 +0000485 CachedCompletionResults.clear();
Douglas Gregorf5586f62010-08-16 18:08:11 +0000486 CachedCompletionTypes.clear();
Douglas Gregor48601b32011-02-16 19:08:06 +0000487 CachedCompletionAllocator = 0;
Douglas Gregor87c08a52010-08-13 22:48:40 +0000488}
489
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000490namespace {
491
Sebastian Redlc43b54c2010-08-18 23:56:43 +0000492/// \brief Gathers information from ASTReader that will be used to initialize
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000493/// a Preprocessor.
Sebastian Redl3c7f4132010-08-18 23:57:06 +0000494class ASTInfoCollector : public ASTReaderListener {
Douglas Gregor998b3d32011-09-01 23:39:15 +0000495 Preprocessor &PP;
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000496 ASTContext &Context;
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000497 LangOptions &LangOpt;
498 HeaderSearch &HSI;
Dylan Noblesmithc93dc782012-02-20 14:00:23 +0000499 IntrusiveRefCntPtr<TargetInfo> &Target;
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000500 std::string &Predefines;
501 unsigned &Counter;
Mike Stump1eb44332009-09-09 15:08:12 +0000502
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000503 unsigned NumHeaderInfos;
Mike Stump1eb44332009-09-09 15:08:12 +0000504
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000505 bool InitializedLanguage;
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000506public:
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000507 ASTInfoCollector(Preprocessor &PP, ASTContext &Context, LangOptions &LangOpt,
508 HeaderSearch &HSI,
Dylan Noblesmithc93dc782012-02-20 14:00:23 +0000509 IntrusiveRefCntPtr<TargetInfo> &Target,
Douglas Gregor998b3d32011-09-01 23:39:15 +0000510 std::string &Predefines,
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000511 unsigned &Counter)
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000512 : PP(PP), Context(Context), LangOpt(LangOpt), HSI(HSI), Target(Target),
Douglas Gregor998b3d32011-09-01 23:39:15 +0000513 Predefines(Predefines), Counter(Counter), NumHeaderInfos(0),
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000514 InitializedLanguage(false) {}
Mike Stump1eb44332009-09-09 15:08:12 +0000515
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000516 virtual bool ReadLanguageOptions(const LangOptions &LangOpts) {
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000517 if (InitializedLanguage)
Douglas Gregor998b3d32011-09-01 23:39:15 +0000518 return false;
519
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000520 LangOpt = LangOpts;
Douglas Gregor998b3d32011-09-01 23:39:15 +0000521
522 // Initialize the preprocessor.
523 PP.Initialize(*Target);
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000524
525 // Initialize the ASTContext
526 Context.InitBuiltinTypes(*Target);
527
528 InitializedLanguage = true;
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000529 return false;
530 }
Mike Stump1eb44332009-09-09 15:08:12 +0000531
Chris Lattner5f9e2722011-07-23 10:55:15 +0000532 virtual bool ReadTargetTriple(StringRef Triple) {
Douglas Gregor998b3d32011-09-01 23:39:15 +0000533 // If we've already initialized the target, don't do it again.
534 if (Target)
535 return false;
536
537 // FIXME: This is broken, we should store the TargetOptions in the AST file.
538 TargetOptions TargetOpts;
539 TargetOpts.ABI = "";
540 TargetOpts.CXXABI = "";
541 TargetOpts.CPU = "";
542 TargetOpts.Features.clear();
543 TargetOpts.Triple = Triple;
544 Target = TargetInfo::CreateTargetInfo(PP.getDiagnostics(), TargetOpts);
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000545 return false;
546 }
Mike Stump1eb44332009-09-09 15:08:12 +0000547
Sebastian Redlcb481aa2010-07-14 23:29:55 +0000548 virtual bool ReadPredefinesBuffer(const PCHPredefinesBlocks &Buffers,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000549 StringRef OriginalFileName,
Nick Lewycky277a6e72011-02-23 21:16:44 +0000550 std::string &SuggestedPredefines,
551 FileManager &FileMgr) {
Sebastian Redlcb481aa2010-07-14 23:29:55 +0000552 Predefines = Buffers[0].Data;
553 for (unsigned I = 1, N = Buffers.size(); I != N; ++I) {
554 Predefines += Buffers[I].Data;
555 }
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000556 return false;
557 }
Mike Stump1eb44332009-09-09 15:08:12 +0000558
Douglas Gregorec1afbf2010-03-16 19:09:18 +0000559 virtual void ReadHeaderFileInfo(const HeaderFileInfo &HFI, unsigned ID) {
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000560 HSI.setHeaderFileInfoForUID(HFI, NumHeaderInfos++);
561 }
Mike Stump1eb44332009-09-09 15:08:12 +0000562
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000563 virtual void ReadCounter(unsigned Value) {
564 Counter = Value;
565 }
566};
567
David Blaikie26e7a902011-09-26 00:01:39 +0000568class StoredDiagnosticConsumer : public DiagnosticConsumer {
Chris Lattner5f9e2722011-07-23 10:55:15 +0000569 SmallVectorImpl<StoredDiagnostic> &StoredDiags;
Douglas Gregora88084b2010-02-18 18:08:43 +0000570
571public:
David Blaikie26e7a902011-09-26 00:01:39 +0000572 explicit StoredDiagnosticConsumer(
Chris Lattner5f9e2722011-07-23 10:55:15 +0000573 SmallVectorImpl<StoredDiagnostic> &StoredDiags)
Douglas Gregora88084b2010-02-18 18:08:43 +0000574 : StoredDiags(StoredDiags) { }
575
David Blaikied6471f72011-09-25 23:23:43 +0000576 virtual void HandleDiagnostic(DiagnosticsEngine::Level Level,
David Blaikie40847cf2011-09-26 01:18:08 +0000577 const Diagnostic &Info);
Douglas Gregoraee526e2011-09-29 00:38:00 +0000578
579 DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
580 // Just drop any diagnostics that come from cloned consumers; they'll
581 // have different source managers anyway.
Douglas Gregor85ae12d2012-01-29 19:57:03 +0000582 // FIXME: We'd like to be able to capture these somehow, even if it's just
583 // file/line/column, because they could occur when parsing module maps or
584 // building modules on-demand.
Douglas Gregoraee526e2011-09-29 00:38:00 +0000585 return new IgnoringDiagConsumer();
586 }
Douglas Gregora88084b2010-02-18 18:08:43 +0000587};
588
589/// \brief RAII object that optionally captures diagnostics, if
590/// there is no diagnostic client to capture them already.
591class CaptureDroppedDiagnostics {
David Blaikied6471f72011-09-25 23:23:43 +0000592 DiagnosticsEngine &Diags;
David Blaikie26e7a902011-09-26 00:01:39 +0000593 StoredDiagnosticConsumer Client;
David Blaikie78ad0b92011-09-25 23:39:51 +0000594 DiagnosticConsumer *PreviousClient;
Douglas Gregora88084b2010-02-18 18:08:43 +0000595
596public:
David Blaikied6471f72011-09-25 23:23:43 +0000597 CaptureDroppedDiagnostics(bool RequestCapture, DiagnosticsEngine &Diags,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000598 SmallVectorImpl<StoredDiagnostic> &StoredDiags)
Douglas Gregorbdbb0042010-08-18 22:29:43 +0000599 : Diags(Diags), Client(StoredDiags), PreviousClient(0)
Douglas Gregora88084b2010-02-18 18:08:43 +0000600 {
Douglas Gregorbdbb0042010-08-18 22:29:43 +0000601 if (RequestCapture || Diags.getClient() == 0) {
602 PreviousClient = Diags.takeClient();
Douglas Gregora88084b2010-02-18 18:08:43 +0000603 Diags.setClient(&Client);
Douglas Gregorbdbb0042010-08-18 22:29:43 +0000604 }
Douglas Gregora88084b2010-02-18 18:08:43 +0000605 }
606
607 ~CaptureDroppedDiagnostics() {
Douglas Gregorbdbb0042010-08-18 22:29:43 +0000608 if (Diags.getClient() == &Client) {
609 Diags.takeClient();
610 Diags.setClient(PreviousClient);
611 }
Douglas Gregora88084b2010-02-18 18:08:43 +0000612 }
613};
614
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000615} // anonymous namespace
616
David Blaikie26e7a902011-09-26 00:01:39 +0000617void StoredDiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level Level,
David Blaikie40847cf2011-09-26 01:18:08 +0000618 const Diagnostic &Info) {
Argyrios Kyrtzidisf2224d82010-11-18 20:06:46 +0000619 // Default implementation (Warnings/errors count).
David Blaikie78ad0b92011-09-25 23:39:51 +0000620 DiagnosticConsumer::HandleDiagnostic(Level, Info);
Argyrios Kyrtzidisf2224d82010-11-18 20:06:46 +0000621
Douglas Gregora88084b2010-02-18 18:08:43 +0000622 StoredDiags.push_back(StoredDiagnostic(Level, Info));
623}
624
Steve Naroff77accc12009-09-03 18:19:54 +0000625const std::string &ASTUnit::getOriginalSourceFileName() {
Daniel Dunbar68d40e22009-12-02 08:44:16 +0000626 return OriginalSourceFile;
Steve Naroff77accc12009-09-03 18:19:54 +0000627}
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000628
Chris Lattner5f9e2722011-07-23 10:55:15 +0000629llvm::MemoryBuffer *ASTUnit::getBufferForFile(StringRef Filename,
Chris Lattner75dfb652010-11-23 09:19:42 +0000630 std::string *ErrorStr) {
Chris Lattner39b49bc2010-11-23 08:35:12 +0000631 assert(FileMgr);
Chris Lattner75dfb652010-11-23 09:19:42 +0000632 return FileMgr->getBufferForFile(Filename, ErrorStr);
Argyrios Kyrtzidis389db162010-11-03 22:45:23 +0000633}
634
Douglas Gregore47be3e2010-11-11 00:39:14 +0000635/// \brief Configure the diagnostics object for use with ASTUnit.
Dylan Noblesmithc93dc782012-02-20 14:00:23 +0000636void ASTUnit::ConfigureDiags(IntrusiveRefCntPtr<DiagnosticsEngine> &Diags,
Douglas Gregor0b53cf82011-01-19 01:02:47 +0000637 const char **ArgBegin, const char **ArgEnd,
Douglas Gregore47be3e2010-11-11 00:39:14 +0000638 ASTUnit &AST, bool CaptureDiagnostics) {
639 if (!Diags.getPtr()) {
640 // No diagnostics engine was provided, so create our own diagnostics object
641 // with the default options.
642 DiagnosticOptions DiagOpts;
David Blaikie78ad0b92011-09-25 23:39:51 +0000643 DiagnosticConsumer *Client = 0;
Douglas Gregore47be3e2010-11-11 00:39:14 +0000644 if (CaptureDiagnostics)
David Blaikie26e7a902011-09-26 00:01:39 +0000645 Client = new StoredDiagnosticConsumer(AST.StoredDiagnostics);
Benjamin Kramerbcadf962012-04-14 09:11:56 +0000646 Diags = CompilerInstance::createDiagnostics(DiagOpts, ArgEnd-ArgBegin,
647 ArgBegin, Client,
648 /*ShouldOwnClient=*/true,
649 /*ShouldCloneClient=*/false);
Douglas Gregore47be3e2010-11-11 00:39:14 +0000650 } else if (CaptureDiagnostics) {
David Blaikie26e7a902011-09-26 00:01:39 +0000651 Diags->setClient(new StoredDiagnosticConsumer(AST.StoredDiagnostics));
Douglas Gregore47be3e2010-11-11 00:39:14 +0000652 }
653}
654
Sebastian Redl3c7f4132010-08-18 23:57:06 +0000655ASTUnit *ASTUnit::LoadFromASTFile(const std::string &Filename,
Dylan Noblesmithc93dc782012-02-20 14:00:23 +0000656 IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
Argyrios Kyrtzidis389db162010-11-03 22:45:23 +0000657 const FileSystemOptions &FileSystemOpts,
Ted Kremenek5cf48762009-10-17 00:34:24 +0000658 bool OnlyLocalDecls,
Douglas Gregor4db64a42010-01-23 00:14:00 +0000659 RemappedFile *RemappedFiles,
Douglas Gregora88084b2010-02-18 18:08:43 +0000660 unsigned NumRemappedFiles,
Argyrios Kyrtzidisbef35c92012-03-07 01:51:17 +0000661 bool CaptureDiagnostics,
662 bool AllowPCHWithCompilerErrors) {
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000663 OwningPtr<ASTUnit> AST(new ASTUnit(true));
Ted Kremenekb547eeb2011-03-18 02:06:56 +0000664
665 // Recover resources if we crash before exiting this method.
Ted Kremenek25a11e12011-03-22 01:15:24 +0000666 llvm::CrashRecoveryContextCleanupRegistrar<ASTUnit>
667 ASTUnitCleanup(AST.get());
David Blaikied6471f72011-09-25 23:23:43 +0000668 llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
669 llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
Ted Kremenek25a11e12011-03-22 01:15:24 +0000670 DiagCleanup(Diags.getPtr());
Ted Kremenekb547eeb2011-03-18 02:06:56 +0000671
Douglas Gregor0b53cf82011-01-19 01:02:47 +0000672 ConfigureDiags(Diags, 0, 0, *AST, CaptureDiagnostics);
Douglas Gregorabc563f2010-07-19 21:46:24 +0000673
Douglas Gregor7d1d49d2009-10-16 20:01:17 +0000674 AST->OnlyLocalDecls = OnlyLocalDecls;
Douglas Gregore47be3e2010-11-11 00:39:14 +0000675 AST->CaptureDiagnostics = CaptureDiagnostics;
Douglas Gregor28019772010-04-05 23:52:57 +0000676 AST->Diagnostics = Diags;
Ted Kremenek4f327862011-03-21 18:40:17 +0000677 AST->FileMgr = new FileManager(FileSystemOpts);
678 AST->SourceMgr = new SourceManager(AST->getDiagnostics(),
679 AST->getFileManager());
Douglas Gregor8e238062011-11-11 00:35:06 +0000680 AST->HeaderInfo.reset(new HeaderSearch(AST->getFileManager(),
Douglas Gregor51f564f2011-12-31 04:05:44 +0000681 AST->getDiagnostics(),
Douglas Gregordc58aa72012-01-30 06:01:29 +0000682 AST->ASTFileLangOpts,
683 /*Target=*/0));
Douglas Gregor914ed9d2010-08-13 03:15:25 +0000684
Douglas Gregor4db64a42010-01-23 00:14:00 +0000685 for (unsigned I = 0; I != NumRemappedFiles; ++I) {
Argyrios Kyrtzidisb1c86492011-03-05 01:03:53 +0000686 FilenameOrMemBuf fileOrBuf = RemappedFiles[I].second;
687 if (const llvm::MemoryBuffer *
688 memBuf = fileOrBuf.dyn_cast<const llvm::MemoryBuffer *>()) {
689 // Create the file entry for the file that we're mapping from.
690 const FileEntry *FromFile
691 = AST->getFileManager().getVirtualFile(RemappedFiles[I].first,
692 memBuf->getBufferSize(),
693 0);
694 if (!FromFile) {
695 AST->getDiagnostics().Report(diag::err_fe_remap_missing_from_file)
696 << RemappedFiles[I].first;
697 delete memBuf;
698 continue;
699 }
700
701 // Override the contents of the "from" file with the contents of
702 // the "to" file.
703 AST->getSourceManager().overrideFileContents(FromFile, memBuf);
704
705 } else {
706 const char *fname = fileOrBuf.get<const char *>();
707 const FileEntry *ToFile = AST->FileMgr->getFile(fname);
708 if (!ToFile) {
709 AST->getDiagnostics().Report(diag::err_fe_remap_missing_to_file)
710 << RemappedFiles[I].first << fname;
711 continue;
712 }
713
714 // Create the file entry for the file that we're mapping from.
715 const FileEntry *FromFile
716 = AST->getFileManager().getVirtualFile(RemappedFiles[I].first,
717 ToFile->getSize(),
718 0);
719 if (!FromFile) {
720 AST->getDiagnostics().Report(diag::err_fe_remap_missing_from_file)
721 << RemappedFiles[I].first;
722 delete memBuf;
723 continue;
724 }
725
726 // Override the contents of the "from" file with the contents of
727 // the "to" file.
728 AST->getSourceManager().overrideFileContents(FromFile, ToFile);
Douglas Gregor4db64a42010-01-23 00:14:00 +0000729 }
Douglas Gregor4db64a42010-01-23 00:14:00 +0000730 }
731
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000732 // Gather Info for preprocessor construction later on.
Mike Stump1eb44332009-09-09 15:08:12 +0000733
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000734 HeaderSearch &HeaderInfo = *AST->HeaderInfo.get();
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000735 std::string Predefines;
736 unsigned Counter;
737
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000738 OwningPtr<ASTReader> Reader;
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000739
Douglas Gregor998b3d32011-09-01 23:39:15 +0000740 AST->PP = new Preprocessor(AST->getDiagnostics(), AST->ASTFileLangOpts,
741 /*Target=*/0, AST->getSourceManager(), HeaderInfo,
742 *AST,
743 /*IILookup=*/0,
744 /*OwnsHeaderSearch=*/false,
745 /*DelayInitialization=*/true);
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000746 Preprocessor &PP = *AST->PP;
747
748 AST->Ctx = new ASTContext(AST->ASTFileLangOpts,
749 AST->getSourceManager(),
750 /*Target=*/0,
751 PP.getIdentifierTable(),
752 PP.getSelectorTable(),
753 PP.getBuiltinInfo(),
754 /* size_reserve = */0,
755 /*DelayInitialization=*/true);
756 ASTContext &Context = *AST->Ctx;
Douglas Gregor998b3d32011-09-01 23:39:15 +0000757
Argyrios Kyrtzidisbef35c92012-03-07 01:51:17 +0000758 Reader.reset(new ASTReader(PP, Context,
759 /*isysroot=*/"",
760 /*DisableValidation=*/false,
761 /*DisableStatCache=*/false,
762 AllowPCHWithCompilerErrors));
Ted Kremenek8c647de2011-05-04 23:27:12 +0000763
764 // Recover resources if we crash before exiting this method.
765 llvm::CrashRecoveryContextCleanupRegistrar<ASTReader>
766 ReaderCleanup(Reader.get());
767
Douglas Gregorbcfd1f52011-09-02 00:18:52 +0000768 Reader->setListener(new ASTInfoCollector(*AST->PP, Context,
Douglas Gregor998b3d32011-09-01 23:39:15 +0000769 AST->ASTFileLangOpts, HeaderInfo,
770 AST->Target, Predefines, Counter));
Daniel Dunbarcc318932009-09-03 05:59:35 +0000771
Douglas Gregor72a9ae12011-07-22 16:00:58 +0000772 switch (Reader->ReadAST(Filename, serialization::MK_MainFile)) {
Sebastian Redlc43b54c2010-08-18 23:56:43 +0000773 case ASTReader::Success:
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000774 break;
Mike Stump1eb44332009-09-09 15:08:12 +0000775
Sebastian Redlc43b54c2010-08-18 23:56:43 +0000776 case ASTReader::Failure:
777 case ASTReader::IgnorePCH:
Douglas Gregor3687e9d2010-04-05 21:10:19 +0000778 AST->getDiagnostics().Report(diag::err_fe_unable_to_load_pch);
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000779 return NULL;
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000780 }
Mike Stump1eb44332009-09-09 15:08:12 +0000781
Daniel Dunbar68d40e22009-12-02 08:44:16 +0000782 AST->OriginalSourceFile = Reader->getOriginalSourceFile();
783
Daniel Dunbard5b61262009-09-21 03:03:47 +0000784 PP.setPredefines(Reader->getSuggestedPredefines());
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000785 PP.setCounterValue(Counter);
Mike Stump1eb44332009-09-09 15:08:12 +0000786
Sebastian Redlc43b54c2010-08-18 23:56:43 +0000787 // Attach the AST reader to the AST context as an external AST
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000788 // source, so that declarations will be deserialized from the
Sebastian Redl3c7f4132010-08-18 23:57:06 +0000789 // AST file as needed.
Sebastian Redlc43b54c2010-08-18 23:56:43 +0000790 ASTReader *ReaderPtr = Reader.get();
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000791 OwningPtr<ExternalASTSource> Source(Reader.take());
Ted Kremenek8c647de2011-05-04 23:27:12 +0000792
793 // Unregister the cleanup for ASTReader. It will get cleaned up
794 // by the ASTUnit cleanup.
795 ReaderCleanup.unregister();
796
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000797 Context.setExternalSource(Source);
798
Douglas Gregor914ed9d2010-08-13 03:15:25 +0000799 // Create an AST consumer, even though it isn't used.
800 AST->Consumer.reset(new ASTConsumer);
801
Sebastian Redlc43b54c2010-08-18 23:56:43 +0000802 // Create a semantic analysis object and tell the AST reader about it.
Douglas Gregor914ed9d2010-08-13 03:15:25 +0000803 AST->TheSema.reset(new Sema(PP, Context, *AST->Consumer));
804 AST->TheSema->Initialize();
805 ReaderPtr->InitializeSema(*AST->TheSema);
Argyrios Kyrtzidis62ba9f62011-11-01 17:14:15 +0000806 AST->Reader = ReaderPtr;
Douglas Gregor914ed9d2010-08-13 03:15:25 +0000807
Mike Stump1eb44332009-09-09 15:08:12 +0000808 return AST.take();
Argyrios Kyrtzidis0853a022009-06-20 08:08:23 +0000809}
Daniel Dunbar521bf9c2009-12-01 09:51:01 +0000810
811namespace {
812
Douglas Gregor9b7db622011-02-16 18:16:54 +0000813/// \brief Preprocessor callback class that updates a hash value with the names
814/// of all macros that have been defined by the translation unit.
815class MacroDefinitionTrackerPPCallbacks : public PPCallbacks {
816 unsigned &Hash;
817
818public:
819 explicit MacroDefinitionTrackerPPCallbacks(unsigned &Hash) : Hash(Hash) { }
820
821 virtual void MacroDefined(const Token &MacroNameTok, const MacroInfo *MI) {
822 Hash = llvm::HashString(MacroNameTok.getIdentifierInfo()->getName(), Hash);
823 }
824};
825
826/// \brief Add the given declaration to the hash of all top-level entities.
827void AddTopLevelDeclarationToHash(Decl *D, unsigned &Hash) {
828 if (!D)
829 return;
830
831 DeclContext *DC = D->getDeclContext();
832 if (!DC)
833 return;
834
835 if (!(DC->isTranslationUnit() || DC->getLookupParent()->isTranslationUnit()))
836 return;
837
838 if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
839 if (ND->getIdentifier())
840 Hash = llvm::HashString(ND->getIdentifier()->getName(), Hash);
841 else if (DeclarationName Name = ND->getDeclName()) {
842 std::string NameStr = Name.getAsString();
843 Hash = llvm::HashString(NameStr, Hash);
844 }
845 return;
Douglas Gregorbd9482d2012-01-01 21:23:57 +0000846 }
Douglas Gregor9b7db622011-02-16 18:16:54 +0000847}
848
Daniel Dunbarf772d1e2009-12-04 08:17:33 +0000849class TopLevelDeclTrackerConsumer : public ASTConsumer {
850 ASTUnit &Unit;
Douglas Gregor9b7db622011-02-16 18:16:54 +0000851 unsigned &Hash;
852
Daniel Dunbarf772d1e2009-12-04 08:17:33 +0000853public:
Douglas Gregor9b7db622011-02-16 18:16:54 +0000854 TopLevelDeclTrackerConsumer(ASTUnit &_Unit, unsigned &Hash)
855 : Unit(_Unit), Hash(Hash) {
856 Hash = 0;
857 }
Douglas Gregor9b7db622011-02-16 18:16:54 +0000858
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +0000859 void handleTopLevelDecl(Decl *D) {
Argyrios Kyrtzidis35593a92011-11-16 02:35:10 +0000860 if (!D)
861 return;
862
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +0000863 // FIXME: Currently ObjC method declarations are incorrectly being
864 // reported as top-level declarations, even though their DeclContext
865 // is the containing ObjC @interface/@implementation. This is a
866 // fundamental problem in the parser right now.
867 if (isa<ObjCMethodDecl>(D))
868 return;
869
870 AddTopLevelDeclarationToHash(D, Hash);
871 Unit.addTopLevelDecl(D);
872
873 handleFileLevelDecl(D);
874 }
875
876 void handleFileLevelDecl(Decl *D) {
877 Unit.addFileLevelDecl(D);
878 if (NamespaceDecl *NSD = dyn_cast<NamespaceDecl>(D)) {
879 for (NamespaceDecl::decl_iterator
880 I = NSD->decls_begin(), E = NSD->decls_end(); I != E; ++I)
881 handleFileLevelDecl(*I);
Ted Kremenekda5a4282010-05-03 20:16:35 +0000882 }
Daniel Dunbarf772d1e2009-12-04 08:17:33 +0000883 }
Sebastian Redl27372b42010-08-11 18:52:41 +0000884
Argyrios Kyrtzidis88c25962011-11-18 00:26:59 +0000885 bool HandleTopLevelDecl(DeclGroupRef D) {
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +0000886 for (DeclGroupRef::iterator it = D.begin(), ie = D.end(); it != ie; ++it)
887 handleTopLevelDecl(*it);
Argyrios Kyrtzidis88c25962011-11-18 00:26:59 +0000888 return true;
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +0000889 }
890
Sebastian Redl27372b42010-08-11 18:52:41 +0000891 // We're not interested in "interesting" decls.
892 void HandleInterestingDecl(DeclGroupRef) {}
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +0000893
894 void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
895 for (DeclGroupRef::iterator it = D.begin(), ie = D.end(); it != ie; ++it)
896 handleTopLevelDecl(*it);
897 }
Daniel Dunbarf772d1e2009-12-04 08:17:33 +0000898};
899
900class TopLevelDeclTrackerAction : public ASTFrontendAction {
901public:
902 ASTUnit &Unit;
903
Daniel Dunbar521bf9c2009-12-01 09:51:01 +0000904 virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000905 StringRef InFile) {
Douglas Gregor9b7db622011-02-16 18:16:54 +0000906 CI.getPreprocessor().addPPCallbacks(
907 new MacroDefinitionTrackerPPCallbacks(Unit.getCurrentTopLevelHashValue()));
908 return new TopLevelDeclTrackerConsumer(Unit,
909 Unit.getCurrentTopLevelHashValue());
Daniel Dunbar521bf9c2009-12-01 09:51:01 +0000910 }
911
912public:
Daniel Dunbarf772d1e2009-12-04 08:17:33 +0000913 TopLevelDeclTrackerAction(ASTUnit &_Unit) : Unit(_Unit) {}
914
Daniel Dunbar521bf9c2009-12-01 09:51:01 +0000915 virtual bool hasCodeCompletionSupport() const { return false; }
Douglas Gregor467dc882011-08-25 22:30:56 +0000916 virtual TranslationUnitKind getTranslationUnitKind() {
917 return Unit.getTranslationUnitKind();
Douglas Gregordf95a132010-08-09 20:45:32 +0000918 }
Daniel Dunbar521bf9c2009-12-01 09:51:01 +0000919};
920
Argyrios Kyrtzidis92ddef12011-09-19 20:40:48 +0000921class PrecompilePreambleConsumer : public PCHGenerator {
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000922 ASTUnit &Unit;
Douglas Gregor9b7db622011-02-16 18:16:54 +0000923 unsigned &Hash;
Douglas Gregoreb8837b2010-08-03 19:06:41 +0000924 std::vector<Decl *> TopLevelDecls;
Douglas Gregor89d99802010-11-30 06:16:57 +0000925
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000926public:
Douglas Gregor9293ba82011-08-25 22:35:51 +0000927 PrecompilePreambleConsumer(ASTUnit &Unit, const Preprocessor &PP,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000928 StringRef isysroot, raw_ostream *Out)
Douglas Gregora8cc6ce2011-11-30 04:39:39 +0000929 : PCHGenerator(PP, "", 0, isysroot, Out), Unit(Unit),
Douglas Gregor9b7db622011-02-16 18:16:54 +0000930 Hash(Unit.getCurrentTopLevelHashValue()) {
931 Hash = 0;
932 }
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000933
Argyrios Kyrtzidis88c25962011-11-18 00:26:59 +0000934 virtual bool HandleTopLevelDecl(DeclGroupRef D) {
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000935 for (DeclGroupRef::iterator it = D.begin(), ie = D.end(); it != ie; ++it) {
936 Decl *D = *it;
937 // FIXME: Currently ObjC method declarations are incorrectly being
938 // reported as top-level declarations, even though their DeclContext
939 // is the containing ObjC @interface/@implementation. This is a
940 // fundamental problem in the parser right now.
941 if (isa<ObjCMethodDecl>(D))
942 continue;
Douglas Gregor9b7db622011-02-16 18:16:54 +0000943 AddTopLevelDeclarationToHash(D, Hash);
Douglas Gregoreb8837b2010-08-03 19:06:41 +0000944 TopLevelDecls.push_back(D);
945 }
Argyrios Kyrtzidis88c25962011-11-18 00:26:59 +0000946 return true;
Douglas Gregoreb8837b2010-08-03 19:06:41 +0000947 }
948
949 virtual void HandleTranslationUnit(ASTContext &Ctx) {
950 PCHGenerator::HandleTranslationUnit(Ctx);
951 if (!Unit.getDiagnostics().hasErrorOccurred()) {
952 // Translate the top-level declarations we captured during
953 // parsing into declaration IDs in the precompiled
954 // preamble. This will allow us to deserialize those top-level
955 // declarations when requested.
956 for (unsigned I = 0, N = TopLevelDecls.size(); I != N; ++I)
957 Unit.addTopLevelDeclFromPreamble(
958 getWriter().getDeclID(TopLevelDecls[I]));
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000959 }
960 }
961};
962
963class PrecompilePreambleAction : public ASTFrontendAction {
964 ASTUnit &Unit;
965
966public:
967 explicit PrecompilePreambleAction(ASTUnit &Unit) : Unit(Unit) {}
968
969 virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000970 StringRef InFile) {
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000971 std::string Sysroot;
Argyrios Kyrtzidis8e3df4d2011-02-15 17:54:22 +0000972 std::string OutputFile;
Chris Lattner5f9e2722011-07-23 10:55:15 +0000973 raw_ostream *OS = 0;
Argyrios Kyrtzidis8e3df4d2011-02-15 17:54:22 +0000974 if (GeneratePCHAction::ComputeASTConsumerArguments(CI, InFile, Sysroot,
975 OutputFile,
Douglas Gregor9293ba82011-08-25 22:35:51 +0000976 OS))
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000977 return 0;
978
Douglas Gregor832d6202011-07-22 16:35:34 +0000979 if (!CI.getFrontendOpts().RelocatablePCH)
980 Sysroot.clear();
981
Douglas Gregor9b7db622011-02-16 18:16:54 +0000982 CI.getPreprocessor().addPPCallbacks(
983 new MacroDefinitionTrackerPPCallbacks(Unit.getCurrentTopLevelHashValue()));
Douglas Gregor9293ba82011-08-25 22:35:51 +0000984 return new PrecompilePreambleConsumer(Unit, CI.getPreprocessor(), Sysroot,
985 OS);
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000986 }
987
988 virtual bool hasCodeCompletionSupport() const { return false; }
989 virtual bool hasASTFileSupport() const { return false; }
Douglas Gregor467dc882011-08-25 22:30:56 +0000990 virtual TranslationUnitKind getTranslationUnitKind() { return TU_Prefix; }
Douglas Gregor1d715ac2010-08-03 08:14:03 +0000991};
992
Daniel Dunbar521bf9c2009-12-01 09:51:01 +0000993}
994
Argyrios Kyrtzidis7f3a4582012-02-01 19:54:02 +0000995static void checkAndRemoveNonDriverDiags(SmallVectorImpl<StoredDiagnostic> &
996 StoredDiagnostics) {
997 // Get rid of stored diagnostics except the ones from the driver which do not
998 // have a source location.
999 for (unsigned I = 0; I < StoredDiagnostics.size(); ++I) {
1000 if (StoredDiagnostics[I].getLocation().isValid()) {
1001 StoredDiagnostics.erase(StoredDiagnostics.begin()+I);
1002 --I;
1003 }
1004 }
1005}
1006
1007static void checkAndSanitizeDiags(SmallVectorImpl<StoredDiagnostic> &
1008 StoredDiagnostics,
1009 SourceManager &SM) {
1010 // The stored diagnostic has the old source manager in it; update
1011 // the locations to refer into the new source manager. Since we've
1012 // been careful to make sure that the source manager's state
1013 // before and after are identical, so that we can reuse the source
1014 // location itself.
1015 for (unsigned I = 0, N = StoredDiagnostics.size(); I < N; ++I) {
1016 if (StoredDiagnostics[I].getLocation().isValid()) {
1017 FullSourceLoc Loc(StoredDiagnostics[I].getLocation(), SM);
1018 StoredDiagnostics[I].setLocation(Loc);
1019 }
1020 }
1021}
1022
Douglas Gregorabc563f2010-07-19 21:46:24 +00001023/// Parse the source file into a translation unit using the given compiler
1024/// invocation, replacing the current translation unit.
1025///
1026/// \returns True if a failure occurred that causes the ASTUnit not to
1027/// contain any translation-unit information, false otherwise.
Douglas Gregor754f3492010-07-24 00:38:13 +00001028bool ASTUnit::Parse(llvm::MemoryBuffer *OverrideMainBuffer) {
Douglas Gregor28233422010-07-27 14:52:07 +00001029 delete SavedMainFileBuffer;
1030 SavedMainFileBuffer = 0;
1031
Ted Kremenek4f327862011-03-21 18:40:17 +00001032 if (!Invocation) {
Douglas Gregor671947b2010-08-19 01:33:06 +00001033 delete OverrideMainBuffer;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001034 return true;
Douglas Gregor671947b2010-08-19 01:33:06 +00001035 }
Douglas Gregorabc563f2010-07-19 21:46:24 +00001036
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001037 // Create the compiler instance to use for building the AST.
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001038 OwningPtr<CompilerInstance> Clang(new CompilerInstance());
Ted Kremenek03201fb2011-03-21 18:40:07 +00001039
1040 // Recover resources if we crash before exiting this method.
Ted Kremenek25a11e12011-03-22 01:15:24 +00001041 llvm::CrashRecoveryContextCleanupRegistrar<CompilerInstance>
1042 CICleanup(Clang.get());
Ted Kremenek03201fb2011-03-21 18:40:07 +00001043
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00001044 IntrusiveRefCntPtr<CompilerInvocation>
Argyrios Kyrtzidis26d43cd2011-09-12 18:09:38 +00001045 CCInvocation(new CompilerInvocation(*Invocation));
1046
1047 Clang->setInvocation(CCInvocation.getPtr());
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001048 OriginalSourceFile = Clang->getFrontendOpts().Inputs[0].File;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001049
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00001050 // Set up diagnostics, capturing any diagnostics that would
1051 // otherwise be dropped.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001052 Clang->setDiagnostics(&getDiagnostics());
Douglas Gregor3687e9d2010-04-05 21:10:19 +00001053
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001054 // Create the target instance.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001055 Clang->getTargetOpts().Features = TargetFeatures;
1056 Clang->setTarget(TargetInfo::CreateTargetInfo(Clang->getDiagnostics(),
Ted Kremenek4f327862011-03-21 18:40:17 +00001057 Clang->getTargetOpts()));
Ted Kremenek03201fb2011-03-21 18:40:07 +00001058 if (!Clang->hasTarget()) {
Douglas Gregor671947b2010-08-19 01:33:06 +00001059 delete OverrideMainBuffer;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001060 return true;
Douglas Gregor671947b2010-08-19 01:33:06 +00001061 }
1062
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001063 // Inform the target of the language options.
1064 //
1065 // FIXME: We shouldn't need to do this, the target should be immutable once
1066 // created. This complexity should be lifted elsewhere.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001067 Clang->getTarget().setForcedLangOptions(Clang->getLangOpts());
Douglas Gregorabc563f2010-07-19 21:46:24 +00001068
Ted Kremenek03201fb2011-03-21 18:40:07 +00001069 assert(Clang->getFrontendOpts().Inputs.size() == 1 &&
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001070 "Invocation must have exactly one source file!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001071 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_AST &&
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001072 "FIXME: AST inputs not yet supported here!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001073 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_LLVM_IR &&
Daniel Dunbarfaddc3e2010-06-07 23:26:47 +00001074 "IR inputs not support here!");
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001075
Douglas Gregorabc563f2010-07-19 21:46:24 +00001076 // Configure the various subsystems.
1077 // FIXME: Should we retain the previous file manager?
Ted Kremenekd3b74d92011-11-17 23:01:24 +00001078 LangOpts = &Clang->getLangOpts();
Ted Kremenek03201fb2011-03-21 18:40:07 +00001079 FileSystemOpts = Clang->getFileSystemOpts();
Ted Kremenek4f327862011-03-21 18:40:17 +00001080 FileMgr = new FileManager(FileSystemOpts);
1081 SourceMgr = new SourceManager(getDiagnostics(), *FileMgr);
Douglas Gregor914ed9d2010-08-13 03:15:25 +00001082 TheSema.reset();
Ted Kremenek4f327862011-03-21 18:40:17 +00001083 Ctx = 0;
1084 PP = 0;
Argyrios Kyrtzidis62ba9f62011-11-01 17:14:15 +00001085 Reader = 0;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001086
1087 // Clear out old caches and data.
1088 TopLevelDecls.clear();
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +00001089 clearFileLevelDecls();
Douglas Gregorabc563f2010-07-19 21:46:24 +00001090 CleanTemporaryFiles();
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001091
Douglas Gregorf128fed2010-08-20 00:02:33 +00001092 if (!OverrideMainBuffer) {
Argyrios Kyrtzidis7f3a4582012-02-01 19:54:02 +00001093 checkAndRemoveNonDriverDiags(StoredDiagnostics);
Douglas Gregorf128fed2010-08-20 00:02:33 +00001094 TopLevelDeclsInPreamble.clear();
1095 }
1096
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001097 // Create a file manager object to provide access to and cache the filesystem.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001098 Clang->setFileManager(&getFileManager());
Douglas Gregorabc563f2010-07-19 21:46:24 +00001099
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001100 // Create the source manager.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001101 Clang->setSourceManager(&getSourceManager());
Douglas Gregorabc563f2010-07-19 21:46:24 +00001102
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001103 // If the main file has been overridden due to the use of a preamble,
1104 // make that override happen and introduce the preamble.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001105 PreprocessorOptions &PreprocessorOpts = Clang->getPreprocessorOpts();
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001106 if (OverrideMainBuffer) {
1107 PreprocessorOpts.addRemappedFile(OriginalSourceFile, OverrideMainBuffer);
1108 PreprocessorOpts.PrecompiledPreambleBytes.first = Preamble.size();
1109 PreprocessorOpts.PrecompiledPreambleBytes.second
1110 = PreambleEndsAtStartOfLine;
Ted Kremenek1872b312011-10-27 17:55:18 +00001111 PreprocessorOpts.ImplicitPCHInclude = getPreambleFile(this);
Douglas Gregorfae3b2f2010-07-27 00:27:13 +00001112 PreprocessorOpts.DisablePCHValidation = true;
Douglas Gregor28233422010-07-27 14:52:07 +00001113
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001114 // The stored diagnostic has the old source manager in it; update
1115 // the locations to refer into the new source manager. Since we've
1116 // been careful to make sure that the source manager's state
1117 // before and after are identical, so that we can reuse the source
1118 // location itself.
Argyrios Kyrtzidis7f3a4582012-02-01 19:54:02 +00001119 checkAndSanitizeDiags(StoredDiagnostics, getSourceManager());
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001120
1121 // Keep track of the override buffer;
1122 SavedMainFileBuffer = OverrideMainBuffer;
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001123 }
1124
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001125 OwningPtr<TopLevelDeclTrackerAction> Act(
Ted Kremenek25a11e12011-03-22 01:15:24 +00001126 new TopLevelDeclTrackerAction(*this));
1127
1128 // Recover resources if we crash before exiting this method.
1129 llvm::CrashRecoveryContextCleanupRegistrar<TopLevelDeclTrackerAction>
1130 ActCleanup(Act.get());
1131
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001132 if (!Act->BeginSourceFile(*Clang.get(), Clang->getFrontendOpts().Inputs[0]))
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001133 goto error;
Douglas Gregorf62d43d2011-07-19 16:10:42 +00001134
1135 if (OverrideMainBuffer) {
Ted Kremenek1872b312011-10-27 17:55:18 +00001136 std::string ModName = getPreambleFile(this);
Douglas Gregorf62d43d2011-07-19 16:10:42 +00001137 TranslateStoredDiagnostics(Clang->getModuleManager(), ModName,
1138 getSourceManager(), PreambleDiagnostics,
1139 StoredDiagnostics);
1140 }
1141
Daniel Dunbarf772d1e2009-12-04 08:17:33 +00001142 Act->Execute();
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001143
1144 transferASTDataFromCompilerInstance(*Clang);
Douglas Gregorabc563f2010-07-19 21:46:24 +00001145
Daniel Dunbarf772d1e2009-12-04 08:17:33 +00001146 Act->EndSourceFile();
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001147
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001148 FailedParseDiagnostics.clear();
1149
Douglas Gregorabc563f2010-07-19 21:46:24 +00001150 return false;
Ted Kremenek4f327862011-03-21 18:40:17 +00001151
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001152error:
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001153 // Remove the overridden buffer we used for the preamble.
Douglas Gregorfae3b2f2010-07-27 00:27:13 +00001154 if (OverrideMainBuffer) {
Douglas Gregor671947b2010-08-19 01:33:06 +00001155 delete OverrideMainBuffer;
Douglas Gregor37cf6632010-10-06 21:11:08 +00001156 SavedMainFileBuffer = 0;
Douglas Gregorfae3b2f2010-07-27 00:27:13 +00001157 }
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001158
1159 // Keep the ownership of the data in the ASTUnit because the client may
1160 // want to see the diagnostics.
1161 transferASTDataFromCompilerInstance(*Clang);
1162 FailedParseDiagnostics.swap(StoredDiagnostics);
Douglas Gregord54eb442010-10-12 16:25:54 +00001163 StoredDiagnostics.clear();
Argyrios Kyrtzidis3e9d3262011-10-24 17:25:20 +00001164 NumStoredDiagnosticsFromDriver = 0;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001165 return true;
1166}
1167
Douglas Gregor44c181a2010-07-23 00:33:23 +00001168/// \brief Simple function to retrieve a path for a preamble precompiled header.
1169static std::string GetPreamblePCHPath() {
1170 // FIXME: This is lame; sys::Path should provide this function (in particular,
1171 // it should know how to find the temporary files dir).
1172 // FIXME: This is really lame. I copied this code from the Driver!
Douglas Gregor424668c2010-09-11 18:05:19 +00001173 // FIXME: This is a hack so that we can override the preamble file during
1174 // crash-recovery testing, which is the only case where the preamble files
1175 // are not necessarily cleaned up.
1176 const char *TmpFile = ::getenv("CINDEXTEST_PREAMBLE_FILE");
1177 if (TmpFile)
1178 return TmpFile;
1179
Douglas Gregor44c181a2010-07-23 00:33:23 +00001180 std::string Error;
1181 const char *TmpDir = ::getenv("TMPDIR");
1182 if (!TmpDir)
1183 TmpDir = ::getenv("TEMP");
1184 if (!TmpDir)
1185 TmpDir = ::getenv("TMP");
Douglas Gregorc6cb2b02010-09-11 17:51:16 +00001186#ifdef LLVM_ON_WIN32
1187 if (!TmpDir)
1188 TmpDir = ::getenv("USERPROFILE");
1189#endif
Douglas Gregor44c181a2010-07-23 00:33:23 +00001190 if (!TmpDir)
1191 TmpDir = "/tmp";
1192 llvm::sys::Path P(TmpDir);
Douglas Gregorc6cb2b02010-09-11 17:51:16 +00001193 P.createDirectoryOnDisk(true);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001194 P.appendComponent("preamble");
Douglas Gregor6bf18302010-08-11 13:06:56 +00001195 P.appendSuffix("pch");
Argyrios Kyrtzidisbc9d5a32011-07-21 18:44:46 +00001196 if (P.makeUnique(/*reuse_current=*/false, /*ErrMsg*/0))
Douglas Gregor44c181a2010-07-23 00:33:23 +00001197 return std::string();
1198
Douglas Gregor44c181a2010-07-23 00:33:23 +00001199 return P.str();
1200}
1201
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001202/// \brief Compute the preamble for the main file, providing the source buffer
1203/// that corresponds to the main file along with a pair (bytes, start-of-line)
1204/// that describes the preamble.
1205std::pair<llvm::MemoryBuffer *, std::pair<unsigned, bool> >
Douglas Gregordf95a132010-08-09 20:45:32 +00001206ASTUnit::ComputePreamble(CompilerInvocation &Invocation,
1207 unsigned MaxLines, bool &CreatedBuffer) {
Douglas Gregor175c4a92010-07-23 23:58:40 +00001208 FrontendOptions &FrontendOpts = Invocation.getFrontendOpts();
Chris Lattner39b49bc2010-11-23 08:35:12 +00001209 PreprocessorOptions &PreprocessorOpts = Invocation.getPreprocessorOpts();
Douglas Gregor175c4a92010-07-23 23:58:40 +00001210 CreatedBuffer = false;
1211
Douglas Gregor44c181a2010-07-23 00:33:23 +00001212 // Try to determine if the main file has been remapped, either from the
1213 // command line (to another file) or directly through the compiler invocation
1214 // (to a memory buffer).
Douglas Gregor175c4a92010-07-23 23:58:40 +00001215 llvm::MemoryBuffer *Buffer = 0;
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001216 llvm::sys::PathWithStatus MainFilePath(FrontendOpts.Inputs[0].File);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001217 if (const llvm::sys::FileStatus *MainFileStatus = MainFilePath.getFileStatus()) {
1218 // Check whether there is a file-file remapping of the main file
1219 for (PreprocessorOptions::remapped_file_iterator
Douglas Gregor175c4a92010-07-23 23:58:40 +00001220 M = PreprocessorOpts.remapped_file_begin(),
1221 E = PreprocessorOpts.remapped_file_end();
Douglas Gregor44c181a2010-07-23 00:33:23 +00001222 M != E;
1223 ++M) {
1224 llvm::sys::PathWithStatus MPath(M->first);
1225 if (const llvm::sys::FileStatus *MStatus = MPath.getFileStatus()) {
1226 if (MainFileStatus->uniqueID == MStatus->uniqueID) {
1227 // We found a remapping. Try to load the resulting, remapped source.
Douglas Gregor175c4a92010-07-23 23:58:40 +00001228 if (CreatedBuffer) {
Douglas Gregor44c181a2010-07-23 00:33:23 +00001229 delete Buffer;
Douglas Gregor175c4a92010-07-23 23:58:40 +00001230 CreatedBuffer = false;
1231 }
1232
Argyrios Kyrtzidis389db162010-11-03 22:45:23 +00001233 Buffer = getBufferForFile(M->second);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001234 if (!Buffer)
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001235 return std::make_pair((llvm::MemoryBuffer*)0,
1236 std::make_pair(0, true));
Douglas Gregor175c4a92010-07-23 23:58:40 +00001237 CreatedBuffer = true;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001238 }
1239 }
1240 }
1241
1242 // Check whether there is a file-buffer remapping. It supercedes the
1243 // file-file remapping.
1244 for (PreprocessorOptions::remapped_file_buffer_iterator
1245 M = PreprocessorOpts.remapped_file_buffer_begin(),
1246 E = PreprocessorOpts.remapped_file_buffer_end();
1247 M != E;
1248 ++M) {
1249 llvm::sys::PathWithStatus MPath(M->first);
1250 if (const llvm::sys::FileStatus *MStatus = MPath.getFileStatus()) {
1251 if (MainFileStatus->uniqueID == MStatus->uniqueID) {
1252 // We found a remapping.
Douglas Gregor175c4a92010-07-23 23:58:40 +00001253 if (CreatedBuffer) {
Douglas Gregor44c181a2010-07-23 00:33:23 +00001254 delete Buffer;
Douglas Gregor175c4a92010-07-23 23:58:40 +00001255 CreatedBuffer = false;
1256 }
Douglas Gregor44c181a2010-07-23 00:33:23 +00001257
Douglas Gregor175c4a92010-07-23 23:58:40 +00001258 Buffer = const_cast<llvm::MemoryBuffer *>(M->second);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001259 }
1260 }
Douglas Gregor175c4a92010-07-23 23:58:40 +00001261 }
Douglas Gregor44c181a2010-07-23 00:33:23 +00001262 }
1263
1264 // If the main source file was not remapped, load it now.
1265 if (!Buffer) {
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001266 Buffer = getBufferForFile(FrontendOpts.Inputs[0].File);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001267 if (!Buffer)
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001268 return std::make_pair((llvm::MemoryBuffer*)0, std::make_pair(0, true));
Douglas Gregor175c4a92010-07-23 23:58:40 +00001269
1270 CreatedBuffer = true;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001271 }
1272
Argyrios Kyrtzidis03c107a2011-08-25 20:39:19 +00001273 return std::make_pair(Buffer, Lexer::ComputePreamble(Buffer,
Ted Kremenekd3b74d92011-11-17 23:01:24 +00001274 *Invocation.getLangOpts(),
Argyrios Kyrtzidis03c107a2011-08-25 20:39:19 +00001275 MaxLines));
Douglas Gregor175c4a92010-07-23 23:58:40 +00001276}
1277
Douglas Gregor754f3492010-07-24 00:38:13 +00001278static llvm::MemoryBuffer *CreatePaddedMainFileBuffer(llvm::MemoryBuffer *Old,
Douglas Gregor754f3492010-07-24 00:38:13 +00001279 unsigned NewSize,
Chris Lattner5f9e2722011-07-23 10:55:15 +00001280 StringRef NewName) {
Douglas Gregor754f3492010-07-24 00:38:13 +00001281 llvm::MemoryBuffer *Result
1282 = llvm::MemoryBuffer::getNewUninitMemBuffer(NewSize, NewName);
1283 memcpy(const_cast<char*>(Result->getBufferStart()),
1284 Old->getBufferStart(), Old->getBufferSize());
1285 memset(const_cast<char*>(Result->getBufferStart()) + Old->getBufferSize(),
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001286 ' ', NewSize - Old->getBufferSize() - 1);
1287 const_cast<char*>(Result->getBufferEnd())[-1] = '\n';
Douglas Gregor754f3492010-07-24 00:38:13 +00001288
Douglas Gregor754f3492010-07-24 00:38:13 +00001289 return Result;
1290}
1291
Douglas Gregor175c4a92010-07-23 23:58:40 +00001292/// \brief Attempt to build or re-use a precompiled preamble when (re-)parsing
1293/// the source file.
1294///
1295/// This routine will compute the preamble of the main source file. If a
1296/// non-trivial preamble is found, it will precompile that preamble into a
1297/// precompiled header so that the precompiled preamble can be used to reduce
1298/// reparsing time. If a precompiled preamble has already been constructed,
1299/// this routine will determine if it is still valid and, if so, avoid
1300/// rebuilding the precompiled preamble.
1301///
Douglas Gregordf95a132010-08-09 20:45:32 +00001302/// \param AllowRebuild When true (the default), this routine is
1303/// allowed to rebuild the precompiled preamble if it is found to be
1304/// out-of-date.
1305///
1306/// \param MaxLines When non-zero, the maximum number of lines that
1307/// can occur within the preamble.
1308///
Douglas Gregor754f3492010-07-24 00:38:13 +00001309/// \returns If the precompiled preamble can be used, returns a newly-allocated
1310/// buffer that should be used in place of the main file when doing so.
1311/// Otherwise, returns a NULL pointer.
Douglas Gregordf95a132010-08-09 20:45:32 +00001312llvm::MemoryBuffer *ASTUnit::getMainBufferWithPrecompiledPreamble(
Douglas Gregor01b6e312011-07-01 18:22:13 +00001313 const CompilerInvocation &PreambleInvocationIn,
Douglas Gregordf95a132010-08-09 20:45:32 +00001314 bool AllowRebuild,
1315 unsigned MaxLines) {
Douglas Gregor01b6e312011-07-01 18:22:13 +00001316
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00001317 IntrusiveRefCntPtr<CompilerInvocation>
Douglas Gregor01b6e312011-07-01 18:22:13 +00001318 PreambleInvocation(new CompilerInvocation(PreambleInvocationIn));
1319 FrontendOptions &FrontendOpts = PreambleInvocation->getFrontendOpts();
Douglas Gregor175c4a92010-07-23 23:58:40 +00001320 PreprocessorOptions &PreprocessorOpts
Douglas Gregor01b6e312011-07-01 18:22:13 +00001321 = PreambleInvocation->getPreprocessorOpts();
Douglas Gregor175c4a92010-07-23 23:58:40 +00001322
1323 bool CreatedPreambleBuffer = false;
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001324 std::pair<llvm::MemoryBuffer *, std::pair<unsigned, bool> > NewPreamble
Douglas Gregor01b6e312011-07-01 18:22:13 +00001325 = ComputePreamble(*PreambleInvocation, MaxLines, CreatedPreambleBuffer);
Douglas Gregor175c4a92010-07-23 23:58:40 +00001326
Douglas Gregorf62d43d2011-07-19 16:10:42 +00001327 // If ComputePreamble() Take ownership of the preamble buffer.
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001328 OwningPtr<llvm::MemoryBuffer> OwnedPreambleBuffer;
Douglas Gregor73fc9122010-11-16 20:45:51 +00001329 if (CreatedPreambleBuffer)
1330 OwnedPreambleBuffer.reset(NewPreamble.first);
1331
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001332 if (!NewPreamble.second.first) {
Douglas Gregor175c4a92010-07-23 23:58:40 +00001333 // We couldn't find a preamble in the main source. Clear out the current
1334 // preamble, if we have one. It's obviously no good any more.
1335 Preamble.clear();
Ted Kremenek1872b312011-10-27 17:55:18 +00001336 erasePreambleFile(this);
Douglas Gregoreababfb2010-08-04 05:53:38 +00001337
1338 // The next time we actually see a preamble, precompile it.
1339 PreambleRebuildCounter = 1;
Douglas Gregor754f3492010-07-24 00:38:13 +00001340 return 0;
Douglas Gregor175c4a92010-07-23 23:58:40 +00001341 }
1342
1343 if (!Preamble.empty()) {
1344 // We've previously computed a preamble. Check whether we have the same
1345 // preamble now that we did before, and that there's enough space in
1346 // the main-file buffer within the precompiled preamble to fit the
1347 // new main file.
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001348 if (Preamble.size() == NewPreamble.second.first &&
1349 PreambleEndsAtStartOfLine == NewPreamble.second.second &&
Douglas Gregor592508e2010-07-24 00:42:07 +00001350 NewPreamble.first->getBufferSize() < PreambleReservedSize-2 &&
Argyrios Kyrtzidis507097e2011-09-19 20:40:35 +00001351 memcmp(Preamble.getBufferStart(), NewPreamble.first->getBufferStart(),
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001352 NewPreamble.second.first) == 0) {
Douglas Gregor175c4a92010-07-23 23:58:40 +00001353 // The preamble has not changed. We may be able to re-use the precompiled
1354 // preamble.
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001355
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001356 // Check that none of the files used by the preamble have changed.
1357 bool AnyFileChanged = false;
1358
1359 // First, make a record of those files that have been overridden via
1360 // remapping or unsaved_files.
1361 llvm::StringMap<std::pair<off_t, time_t> > OverriddenFiles;
1362 for (PreprocessorOptions::remapped_file_iterator
1363 R = PreprocessorOpts.remapped_file_begin(),
1364 REnd = PreprocessorOpts.remapped_file_end();
1365 !AnyFileChanged && R != REnd;
1366 ++R) {
1367 struct stat StatBuf;
Anders Carlsson340415c2011-03-18 19:23:38 +00001368 if (FileMgr->getNoncachedStatValue(R->second, StatBuf)) {
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001369 // If we can't stat the file we're remapping to, assume that something
1370 // horrible happened.
1371 AnyFileChanged = true;
1372 break;
1373 }
Douglas Gregor754f3492010-07-24 00:38:13 +00001374
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001375 OverriddenFiles[R->first] = std::make_pair(StatBuf.st_size,
1376 StatBuf.st_mtime);
1377 }
1378 for (PreprocessorOptions::remapped_file_buffer_iterator
1379 R = PreprocessorOpts.remapped_file_buffer_begin(),
1380 REnd = PreprocessorOpts.remapped_file_buffer_end();
1381 !AnyFileChanged && R != REnd;
1382 ++R) {
1383 // FIXME: Should we actually compare the contents of file->buffer
1384 // remappings?
1385 OverriddenFiles[R->first] = std::make_pair(R->second->getBufferSize(),
1386 0);
1387 }
1388
1389 // Check whether anything has changed.
1390 for (llvm::StringMap<std::pair<off_t, time_t> >::iterator
1391 F = FilesInPreamble.begin(), FEnd = FilesInPreamble.end();
1392 !AnyFileChanged && F != FEnd;
1393 ++F) {
1394 llvm::StringMap<std::pair<off_t, time_t> >::iterator Overridden
1395 = OverriddenFiles.find(F->first());
1396 if (Overridden != OverriddenFiles.end()) {
1397 // This file was remapped; check whether the newly-mapped file
1398 // matches up with the previous mapping.
1399 if (Overridden->second != F->second)
1400 AnyFileChanged = true;
1401 continue;
1402 }
1403
1404 // The file was not remapped; check whether it has changed on disk.
1405 struct stat StatBuf;
Anders Carlsson340415c2011-03-18 19:23:38 +00001406 if (FileMgr->getNoncachedStatValue(F->first(), StatBuf)) {
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001407 // If we can't stat the file, assume that something horrible happened.
1408 AnyFileChanged = true;
1409 } else if (StatBuf.st_size != F->second.first ||
1410 StatBuf.st_mtime != F->second.second)
1411 AnyFileChanged = true;
1412 }
1413
1414 if (!AnyFileChanged) {
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001415 // Okay! We can re-use the precompiled preamble.
1416
1417 // Set the state of the diagnostic object to mimic its state
1418 // after parsing the preamble.
1419 getDiagnostics().Reset();
Douglas Gregor32be4a52010-10-11 21:37:58 +00001420 ProcessWarningOptions(getDiagnostics(),
Douglas Gregor01b6e312011-07-01 18:22:13 +00001421 PreambleInvocation->getDiagnosticOpts());
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001422 getDiagnostics().setNumWarnings(NumWarningsInPreamble);
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001423
1424 // Create a version of the main file buffer that is padded to
1425 // buffer size we reserved when creating the preamble.
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001426 return CreatePaddedMainFileBuffer(NewPreamble.first,
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001427 PreambleReservedSize,
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001428 FrontendOpts.Inputs[0].File);
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001429 }
Douglas Gregor175c4a92010-07-23 23:58:40 +00001430 }
Douglas Gregordf95a132010-08-09 20:45:32 +00001431
1432 // If we aren't allowed to rebuild the precompiled preamble, just
1433 // return now.
1434 if (!AllowRebuild)
1435 return 0;
Douglas Gregoraa3e6ba2010-10-08 04:03:57 +00001436
Douglas Gregor175c4a92010-07-23 23:58:40 +00001437 // We can't reuse the previously-computed preamble. Build a new one.
1438 Preamble.clear();
Douglas Gregorf62d43d2011-07-19 16:10:42 +00001439 PreambleDiagnostics.clear();
Ted Kremenek1872b312011-10-27 17:55:18 +00001440 erasePreambleFile(this);
Douglas Gregoreababfb2010-08-04 05:53:38 +00001441 PreambleRebuildCounter = 1;
Douglas Gregordf95a132010-08-09 20:45:32 +00001442 } else if (!AllowRebuild) {
1443 // We aren't allowed to rebuild the precompiled preamble; just
1444 // return now.
1445 return 0;
1446 }
Douglas Gregoreababfb2010-08-04 05:53:38 +00001447
1448 // If the preamble rebuild counter > 1, it's because we previously
1449 // failed to build a preamble and we're not yet ready to try
1450 // again. Decrement the counter and return a failure.
1451 if (PreambleRebuildCounter > 1) {
1452 --PreambleRebuildCounter;
1453 return 0;
1454 }
1455
Douglas Gregor2cd4fd42010-09-11 17:56:52 +00001456 // Create a temporary file for the precompiled preamble. In rare
1457 // circumstances, this can fail.
1458 std::string PreamblePCHPath = GetPreamblePCHPath();
1459 if (PreamblePCHPath.empty()) {
1460 // Try again next time.
1461 PreambleRebuildCounter = 1;
1462 return 0;
1463 }
1464
Douglas Gregor175c4a92010-07-23 23:58:40 +00001465 // We did not previously compute a preamble, or it can't be reused anyway.
Douglas Gregor213f18b2010-10-28 15:44:59 +00001466 SimpleTimer PreambleTimer(WantTiming);
Benjamin Krameredfb7ec2010-11-09 20:00:56 +00001467 PreambleTimer.setOutput("Precompiling preamble");
Douglas Gregor44c181a2010-07-23 00:33:23 +00001468
1469 // Create a new buffer that stores the preamble. The buffer also contains
1470 // extra space for the original contents of the file (which will be present
1471 // when we actually parse the file) along with more room in case the file
Douglas Gregor175c4a92010-07-23 23:58:40 +00001472 // grows.
1473 PreambleReservedSize = NewPreamble.first->getBufferSize();
1474 if (PreambleReservedSize < 4096)
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001475 PreambleReservedSize = 8191;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001476 else
Douglas Gregor175c4a92010-07-23 23:58:40 +00001477 PreambleReservedSize *= 2;
1478
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001479 // Save the preamble text for later; we'll need to compare against it for
1480 // subsequent reparses.
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001481 StringRef MainFilename = PreambleInvocation->getFrontendOpts().Inputs[0].File;
Argyrios Kyrtzidis507097e2011-09-19 20:40:35 +00001482 Preamble.assign(FileMgr->getFile(MainFilename),
1483 NewPreamble.first->getBufferStart(),
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001484 NewPreamble.first->getBufferStart()
1485 + NewPreamble.second.first);
1486 PreambleEndsAtStartOfLine = NewPreamble.second.second;
1487
Douglas Gregor671947b2010-08-19 01:33:06 +00001488 delete PreambleBuffer;
1489 PreambleBuffer
Douglas Gregor175c4a92010-07-23 23:58:40 +00001490 = llvm::MemoryBuffer::getNewUninitMemBuffer(PreambleReservedSize,
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001491 FrontendOpts.Inputs[0].File);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001492 memcpy(const_cast<char*>(PreambleBuffer->getBufferStart()),
Douglas Gregor175c4a92010-07-23 23:58:40 +00001493 NewPreamble.first->getBufferStart(), Preamble.size());
1494 memset(const_cast<char*>(PreambleBuffer->getBufferStart()) + Preamble.size(),
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +00001495 ' ', PreambleReservedSize - Preamble.size() - 1);
1496 const_cast<char*>(PreambleBuffer->getBufferEnd())[-1] = '\n';
Douglas Gregor44c181a2010-07-23 00:33:23 +00001497
1498 // Remap the main source file to the preamble buffer.
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001499 llvm::sys::PathWithStatus MainFilePath(FrontendOpts.Inputs[0].File);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001500 PreprocessorOpts.addRemappedFile(MainFilePath.str(), PreambleBuffer);
1501
1502 // Tell the compiler invocation to generate a temporary precompiled header.
1503 FrontendOpts.ProgramAction = frontend::GeneratePCH;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001504 // FIXME: Generate the precompiled header into memory?
Douglas Gregor2cd4fd42010-09-11 17:56:52 +00001505 FrontendOpts.OutputFile = PreamblePCHPath;
Douglas Gregoraa3e6ba2010-10-08 04:03:57 +00001506 PreprocessorOpts.PrecompiledPreambleBytes.first = 0;
1507 PreprocessorOpts.PrecompiledPreambleBytes.second = false;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001508
1509 // Create the compiler instance to use for building the precompiled preamble.
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001510 OwningPtr<CompilerInstance> Clang(new CompilerInstance());
Ted Kremenek03201fb2011-03-21 18:40:07 +00001511
1512 // Recover resources if we crash before exiting this method.
Ted Kremenek25a11e12011-03-22 01:15:24 +00001513 llvm::CrashRecoveryContextCleanupRegistrar<CompilerInstance>
1514 CICleanup(Clang.get());
Ted Kremenek03201fb2011-03-21 18:40:07 +00001515
Douglas Gregor01b6e312011-07-01 18:22:13 +00001516 Clang->setInvocation(&*PreambleInvocation);
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001517 OriginalSourceFile = Clang->getFrontendOpts().Inputs[0].File;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001518
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00001519 // Set up diagnostics, capturing all of the diagnostics produced.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001520 Clang->setDiagnostics(&getDiagnostics());
Douglas Gregor44c181a2010-07-23 00:33:23 +00001521
1522 // Create the target instance.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001523 Clang->getTargetOpts().Features = TargetFeatures;
1524 Clang->setTarget(TargetInfo::CreateTargetInfo(Clang->getDiagnostics(),
1525 Clang->getTargetOpts()));
1526 if (!Clang->hasTarget()) {
Douglas Gregor175c4a92010-07-23 23:58:40 +00001527 llvm::sys::Path(FrontendOpts.OutputFile).eraseFromDisk();
1528 Preamble.clear();
Douglas Gregoreababfb2010-08-04 05:53:38 +00001529 PreambleRebuildCounter = DefaultPreambleRebuildInterval;
Douglas Gregor671947b2010-08-19 01:33:06 +00001530 PreprocessorOpts.eraseRemappedFile(
1531 PreprocessorOpts.remapped_file_buffer_end() - 1);
Douglas Gregor754f3492010-07-24 00:38:13 +00001532 return 0;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001533 }
1534
1535 // Inform the target of the language options.
1536 //
1537 // FIXME: We shouldn't need to do this, the target should be immutable once
1538 // created. This complexity should be lifted elsewhere.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001539 Clang->getTarget().setForcedLangOptions(Clang->getLangOpts());
Douglas Gregor44c181a2010-07-23 00:33:23 +00001540
Ted Kremenek03201fb2011-03-21 18:40:07 +00001541 assert(Clang->getFrontendOpts().Inputs.size() == 1 &&
Douglas Gregor44c181a2010-07-23 00:33:23 +00001542 "Invocation must have exactly one source file!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001543 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_AST &&
Douglas Gregor44c181a2010-07-23 00:33:23 +00001544 "FIXME: AST inputs not yet supported here!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001545 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_LLVM_IR &&
Douglas Gregor44c181a2010-07-23 00:33:23 +00001546 "IR inputs not support here!");
1547
1548 // Clear out old caches and data.
Douglas Gregoraa3e6ba2010-10-08 04:03:57 +00001549 getDiagnostics().Reset();
Ted Kremenek03201fb2011-03-21 18:40:07 +00001550 ProcessWarningOptions(getDiagnostics(), Clang->getDiagnosticOpts());
Argyrios Kyrtzidis7f3a4582012-02-01 19:54:02 +00001551 checkAndRemoveNonDriverDiags(StoredDiagnostics);
Douglas Gregoreb8837b2010-08-03 19:06:41 +00001552 TopLevelDecls.clear();
1553 TopLevelDeclsInPreamble.clear();
Douglas Gregor44c181a2010-07-23 00:33:23 +00001554
1555 // Create a file manager object to provide access to and cache the filesystem.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001556 Clang->setFileManager(new FileManager(Clang->getFileSystemOpts()));
Douglas Gregor44c181a2010-07-23 00:33:23 +00001557
1558 // Create the source manager.
Ted Kremenek03201fb2011-03-21 18:40:07 +00001559 Clang->setSourceManager(new SourceManager(getDiagnostics(),
Ted Kremenek4f327862011-03-21 18:40:17 +00001560 Clang->getFileManager()));
Douglas Gregor44c181a2010-07-23 00:33:23 +00001561
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001562 OwningPtr<PrecompilePreambleAction> Act;
Douglas Gregor1d715ac2010-08-03 08:14:03 +00001563 Act.reset(new PrecompilePreambleAction(*this));
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001564 if (!Act->BeginSourceFile(*Clang.get(), Clang->getFrontendOpts().Inputs[0])) {
Douglas Gregor175c4a92010-07-23 23:58:40 +00001565 llvm::sys::Path(FrontendOpts.OutputFile).eraseFromDisk();
1566 Preamble.clear();
Douglas Gregoreababfb2010-08-04 05:53:38 +00001567 PreambleRebuildCounter = DefaultPreambleRebuildInterval;
Douglas Gregor671947b2010-08-19 01:33:06 +00001568 PreprocessorOpts.eraseRemappedFile(
1569 PreprocessorOpts.remapped_file_buffer_end() - 1);
Douglas Gregor754f3492010-07-24 00:38:13 +00001570 return 0;
Douglas Gregor44c181a2010-07-23 00:33:23 +00001571 }
1572
1573 Act->Execute();
1574 Act->EndSourceFile();
Ted Kremenek4f327862011-03-21 18:40:17 +00001575
Douglas Gregoreb8837b2010-08-03 19:06:41 +00001576 if (Diagnostics->hasErrorOccurred()) {
Douglas Gregor175c4a92010-07-23 23:58:40 +00001577 // There were errors parsing the preamble, so no precompiled header was
1578 // generated. Forget that we even tried.
Douglas Gregor06e50442010-09-27 16:43:25 +00001579 // FIXME: Should we leave a note for ourselves to try again?
Douglas Gregor175c4a92010-07-23 23:58:40 +00001580 llvm::sys::Path(FrontendOpts.OutputFile).eraseFromDisk();
1581 Preamble.clear();
Douglas Gregoreb8837b2010-08-03 19:06:41 +00001582 TopLevelDeclsInPreamble.clear();
Douglas Gregoreababfb2010-08-04 05:53:38 +00001583 PreambleRebuildCounter = DefaultPreambleRebuildInterval;
Douglas Gregor671947b2010-08-19 01:33:06 +00001584 PreprocessorOpts.eraseRemappedFile(
1585 PreprocessorOpts.remapped_file_buffer_end() - 1);
Douglas Gregor754f3492010-07-24 00:38:13 +00001586 return 0;
Douglas Gregor175c4a92010-07-23 23:58:40 +00001587 }
1588
Douglas Gregorf62d43d2011-07-19 16:10:42 +00001589 // Transfer any diagnostics generated when parsing the preamble into the set
1590 // of preamble diagnostics.
1591 PreambleDiagnostics.clear();
1592 PreambleDiagnostics.insert(PreambleDiagnostics.end(),
Argyrios Kyrtzidis3e9d3262011-10-24 17:25:20 +00001593 stored_diag_afterDriver_begin(), stored_diag_end());
Argyrios Kyrtzidis7f3a4582012-02-01 19:54:02 +00001594 checkAndRemoveNonDriverDiags(StoredDiagnostics);
Douglas Gregorf62d43d2011-07-19 16:10:42 +00001595
Douglas Gregor175c4a92010-07-23 23:58:40 +00001596 // Keep track of the preamble we precompiled.
Ted Kremenek1872b312011-10-27 17:55:18 +00001597 setPreambleFile(this, FrontendOpts.OutputFile);
Douglas Gregorc0659ec2010-08-02 20:51:39 +00001598 NumWarningsInPreamble = getDiagnostics().getNumWarnings();
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001599
1600 // Keep track of all of the files that the source manager knows about,
1601 // so we can verify whether they have changed or not.
1602 FilesInPreamble.clear();
Ted Kremenek03201fb2011-03-21 18:40:07 +00001603 SourceManager &SourceMgr = Clang->getSourceManager();
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001604 const llvm::MemoryBuffer *MainFileBuffer
1605 = SourceMgr.getBuffer(SourceMgr.getMainFileID());
1606 for (SourceManager::fileinfo_iterator F = SourceMgr.fileinfo_begin(),
1607 FEnd = SourceMgr.fileinfo_end();
1608 F != FEnd;
1609 ++F) {
Argyrios Kyrtzidisb1c86492011-03-05 01:03:53 +00001610 const FileEntry *File = F->second->OrigEntry;
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001611 if (!File || F->second->getRawBuffer() == MainFileBuffer)
1612 continue;
1613
1614 FilesInPreamble[File->getName()]
1615 = std::make_pair(F->second->getSize(), File->getModificationTime());
1616 }
1617
Douglas Gregoreababfb2010-08-04 05:53:38 +00001618 PreambleRebuildCounter = 1;
Douglas Gregor671947b2010-08-19 01:33:06 +00001619 PreprocessorOpts.eraseRemappedFile(
1620 PreprocessorOpts.remapped_file_buffer_end() - 1);
Douglas Gregor9b7db622011-02-16 18:16:54 +00001621
1622 // If the hash of top-level entities differs from the hash of the top-level
1623 // entities the last time we rebuilt the preamble, clear out the completion
1624 // cache.
1625 if (CurrentTopLevelHashValue != PreambleTopLevelHashValue) {
1626 CompletionCacheTopLevelHashValue = 0;
1627 PreambleTopLevelHashValue = CurrentTopLevelHashValue;
1628 }
1629
Douglas Gregor754f3492010-07-24 00:38:13 +00001630 return CreatePaddedMainFileBuffer(NewPreamble.first,
Douglas Gregor754f3492010-07-24 00:38:13 +00001631 PreambleReservedSize,
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001632 FrontendOpts.Inputs[0].File);
Douglas Gregor44c181a2010-07-23 00:33:23 +00001633}
Douglas Gregorabc563f2010-07-19 21:46:24 +00001634
Douglas Gregoreb8837b2010-08-03 19:06:41 +00001635void ASTUnit::RealizeTopLevelDeclsFromPreamble() {
1636 std::vector<Decl *> Resolved;
1637 Resolved.reserve(TopLevelDeclsInPreamble.size());
1638 ExternalASTSource &Source = *getASTContext().getExternalSource();
1639 for (unsigned I = 0, N = TopLevelDeclsInPreamble.size(); I != N; ++I) {
1640 // Resolve the declaration ID to an actual declaration, possibly
1641 // deserializing the declaration in the process.
1642 Decl *D = Source.GetExternalDecl(TopLevelDeclsInPreamble[I]);
1643 if (D)
1644 Resolved.push_back(D);
1645 }
1646 TopLevelDeclsInPreamble.clear();
1647 TopLevelDecls.insert(TopLevelDecls.begin(), Resolved.begin(), Resolved.end());
1648}
1649
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001650void ASTUnit::transferASTDataFromCompilerInstance(CompilerInstance &CI) {
1651 // Steal the created target, context, and preprocessor.
1652 TheSema.reset(CI.takeSema());
1653 Consumer.reset(CI.takeASTConsumer());
1654 Ctx = &CI.getASTContext();
1655 PP = &CI.getPreprocessor();
1656 CI.setSourceManager(0);
1657 CI.setFileManager(0);
1658 Target = &CI.getTarget();
1659 Reader = CI.getModuleManager();
1660}
1661
Chris Lattner5f9e2722011-07-23 10:55:15 +00001662StringRef ASTUnit::getMainFileName() const {
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001663 return Invocation->getFrontendOpts().Inputs[0].File;
Douglas Gregor213f18b2010-10-28 15:44:59 +00001664}
1665
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00001666ASTUnit *ASTUnit::create(CompilerInvocation *CI,
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00001667 IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
Argyrios Kyrtzidis991bf492011-11-28 04:55:55 +00001668 bool CaptureDiagnostics) {
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001669 OwningPtr<ASTUnit> AST;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00001670 AST.reset(new ASTUnit(false));
Argyrios Kyrtzidis991bf492011-11-28 04:55:55 +00001671 ConfigureDiags(Diags, 0, 0, *AST, CaptureDiagnostics);
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00001672 AST->Diagnostics = Diags;
Ted Kremenek4f327862011-03-21 18:40:17 +00001673 AST->Invocation = CI;
Anders Carlsson0d8d7e62011-03-18 18:22:40 +00001674 AST->FileSystemOpts = CI->getFileSystemOpts();
Ted Kremenek4f327862011-03-21 18:40:17 +00001675 AST->FileMgr = new FileManager(AST->FileSystemOpts);
Argyrios Kyrtzidisabb5afa2011-10-14 21:22:05 +00001676 AST->SourceMgr = new SourceManager(AST->getDiagnostics(), *AST->FileMgr);
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00001677
1678 return AST.take();
1679}
1680
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001681ASTUnit *ASTUnit::LoadFromCompilerInvocationAction(CompilerInvocation *CI,
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00001682 IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
Argyrios Kyrtzidisabb5afa2011-10-14 21:22:05 +00001683 ASTFrontendAction *Action,
Argyrios Kyrtzidis6f3ce972011-11-28 04:56:00 +00001684 ASTUnit *Unit,
1685 bool Persistent,
1686 StringRef ResourceFilesPath,
1687 bool OnlyLocalDecls,
1688 bool CaptureDiagnostics,
1689 bool PrecompilePreamble,
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001690 bool CacheCodeCompletionResults,
1691 OwningPtr<ASTUnit> *ErrAST) {
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001692 assert(CI && "A CompilerInvocation is required");
1693
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001694 OwningPtr<ASTUnit> OwnAST;
Argyrios Kyrtzidisabb5afa2011-10-14 21:22:05 +00001695 ASTUnit *AST = Unit;
1696 if (!AST) {
1697 // Create the AST unit.
Argyrios Kyrtzidis6f3ce972011-11-28 04:56:00 +00001698 OwnAST.reset(create(CI, Diags, CaptureDiagnostics));
Argyrios Kyrtzidisabb5afa2011-10-14 21:22:05 +00001699 AST = OwnAST.get();
1700 }
1701
Argyrios Kyrtzidis6f3ce972011-11-28 04:56:00 +00001702 if (!ResourceFilesPath.empty()) {
1703 // Override the resources path.
1704 CI->getHeaderSearchOpts().ResourceDir = ResourceFilesPath;
1705 }
1706 AST->OnlyLocalDecls = OnlyLocalDecls;
1707 AST->CaptureDiagnostics = CaptureDiagnostics;
1708 if (PrecompilePreamble)
1709 AST->PreambleRebuildCounter = 2;
Douglas Gregor467dc882011-08-25 22:30:56 +00001710 AST->TUKind = Action ? Action->getTranslationUnitKind() : TU_Complete;
Argyrios Kyrtzidis6f3ce972011-11-28 04:56:00 +00001711 AST->ShouldCacheCodeCompletionResults = CacheCodeCompletionResults;
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001712
1713 // Recover resources if we crash before exiting this method.
1714 llvm::CrashRecoveryContextCleanupRegistrar<ASTUnit>
Argyrios Kyrtzidisabb5afa2011-10-14 21:22:05 +00001715 ASTUnitCleanup(OwnAST.get());
David Blaikied6471f72011-09-25 23:23:43 +00001716 llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
1717 llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001718 DiagCleanup(Diags.getPtr());
1719
1720 // We'll manage file buffers ourselves.
1721 CI->getPreprocessorOpts().RetainRemappedFileBuffers = true;
1722 CI->getFrontendOpts().DisableFree = false;
1723 ProcessWarningOptions(AST->getDiagnostics(), CI->getDiagnosticOpts());
1724
1725 // Save the target features.
1726 AST->TargetFeatures = CI->getTargetOpts().Features;
1727
1728 // Create the compiler instance to use for building the AST.
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001729 OwningPtr<CompilerInstance> Clang(new CompilerInstance());
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001730
1731 // Recover resources if we crash before exiting this method.
1732 llvm::CrashRecoveryContextCleanupRegistrar<CompilerInstance>
1733 CICleanup(Clang.get());
1734
1735 Clang->setInvocation(CI);
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001736 AST->OriginalSourceFile = Clang->getFrontendOpts().Inputs[0].File;
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001737
1738 // Set up diagnostics, capturing any diagnostics that would
1739 // otherwise be dropped.
1740 Clang->setDiagnostics(&AST->getDiagnostics());
1741
1742 // Create the target instance.
1743 Clang->getTargetOpts().Features = AST->TargetFeatures;
1744 Clang->setTarget(TargetInfo::CreateTargetInfo(Clang->getDiagnostics(),
1745 Clang->getTargetOpts()));
1746 if (!Clang->hasTarget())
1747 return 0;
1748
1749 // Inform the target of the language options.
1750 //
1751 // FIXME: We shouldn't need to do this, the target should be immutable once
1752 // created. This complexity should be lifted elsewhere.
1753 Clang->getTarget().setForcedLangOptions(Clang->getLangOpts());
1754
1755 assert(Clang->getFrontendOpts().Inputs.size() == 1 &&
1756 "Invocation must have exactly one source file!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001757 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_AST &&
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001758 "FIXME: AST inputs not yet supported here!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00001759 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_LLVM_IR &&
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001760 "IR inputs not supported here!");
1761
1762 // Configure the various subsystems.
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001763 AST->TheSema.reset();
1764 AST->Ctx = 0;
1765 AST->PP = 0;
Argyrios Kyrtzidis62ba9f62011-11-01 17:14:15 +00001766 AST->Reader = 0;
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001767
1768 // Create a file manager object to provide access to and cache the filesystem.
1769 Clang->setFileManager(&AST->getFileManager());
1770
1771 // Create the source manager.
1772 Clang->setSourceManager(&AST->getSourceManager());
1773
1774 ASTFrontendAction *Act = Action;
1775
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001776 OwningPtr<TopLevelDeclTrackerAction> TrackerAct;
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001777 if (!Act) {
1778 TrackerAct.reset(new TopLevelDeclTrackerAction(*AST));
1779 Act = TrackerAct.get();
1780 }
1781
1782 // Recover resources if we crash before exiting this method.
1783 llvm::CrashRecoveryContextCleanupRegistrar<TopLevelDeclTrackerAction>
1784 ActCleanup(TrackerAct.get());
1785
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001786 if (!Act->BeginSourceFile(*Clang.get(), Clang->getFrontendOpts().Inputs[0])) {
1787 AST->transferASTDataFromCompilerInstance(*Clang);
1788 if (OwnAST && ErrAST)
1789 ErrAST->swap(OwnAST);
1790
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001791 return 0;
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001792 }
Argyrios Kyrtzidis6f3ce972011-11-28 04:56:00 +00001793
1794 if (Persistent && !TrackerAct) {
1795 Clang->getPreprocessor().addPPCallbacks(
1796 new MacroDefinitionTrackerPPCallbacks(AST->getCurrentTopLevelHashValue()));
1797 std::vector<ASTConsumer*> Consumers;
1798 if (Clang->hasASTConsumer())
1799 Consumers.push_back(Clang->takeASTConsumer());
1800 Consumers.push_back(new TopLevelDeclTrackerConsumer(*AST,
1801 AST->getCurrentTopLevelHashValue()));
1802 Clang->setASTConsumer(new MultiplexConsumer(Consumers));
1803 }
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001804 Act->Execute();
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001805
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001806 // Steal the created target, context, and preprocessor.
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001807 AST->transferASTDataFromCompilerInstance(*Clang);
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001808
1809 Act->EndSourceFile();
1810
Argyrios Kyrtzidisabb5afa2011-10-14 21:22:05 +00001811 if (OwnAST)
1812 return OwnAST.take();
1813 else
1814 return AST;
Argyrios Kyrtzidisd808bd22011-05-03 23:26:34 +00001815}
1816
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001817bool ASTUnit::LoadFromCompilerInvocation(bool PrecompilePreamble) {
1818 if (!Invocation)
1819 return true;
1820
1821 // We'll manage file buffers ourselves.
1822 Invocation->getPreprocessorOpts().RetainRemappedFileBuffers = true;
1823 Invocation->getFrontendOpts().DisableFree = false;
Douglas Gregor0b53cf82011-01-19 01:02:47 +00001824 ProcessWarningOptions(getDiagnostics(), Invocation->getDiagnosticOpts());
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001825
Douglas Gregor1aa27302011-01-27 18:02:58 +00001826 // Save the target features.
1827 TargetFeatures = Invocation->getTargetOpts().Features;
1828
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001829 llvm::MemoryBuffer *OverrideMainBuffer = 0;
Douglas Gregor99ba2022010-10-27 17:24:53 +00001830 if (PrecompilePreamble) {
Douglas Gregor08bb4c62010-11-15 23:00:34 +00001831 PreambleRebuildCounter = 2;
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001832 OverrideMainBuffer
1833 = getMainBufferWithPrecompiledPreamble(*Invocation);
1834 }
1835
Douglas Gregor213f18b2010-10-28 15:44:59 +00001836 SimpleTimer ParsingTimer(WantTiming);
Benjamin Krameredfb7ec2010-11-09 20:00:56 +00001837 ParsingTimer.setOutput("Parsing " + getMainFileName());
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001838
Ted Kremenek25a11e12011-03-22 01:15:24 +00001839 // Recover resources if we crash before exiting this method.
1840 llvm::CrashRecoveryContextCleanupRegistrar<llvm::MemoryBuffer>
1841 MemBufferCleanup(OverrideMainBuffer);
1842
Douglas Gregor213f18b2010-10-28 15:44:59 +00001843 return Parse(OverrideMainBuffer);
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001844}
1845
Douglas Gregorabc563f2010-07-19 21:46:24 +00001846ASTUnit *ASTUnit::LoadFromCompilerInvocation(CompilerInvocation *CI,
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00001847 IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
Douglas Gregorabc563f2010-07-19 21:46:24 +00001848 bool OnlyLocalDecls,
Douglas Gregor44c181a2010-07-23 00:33:23 +00001849 bool CaptureDiagnostics,
Douglas Gregordf95a132010-08-09 20:45:32 +00001850 bool PrecompilePreamble,
Douglas Gregor467dc882011-08-25 22:30:56 +00001851 TranslationUnitKind TUKind,
Argyrios Kyrtzidise1d43302012-02-25 02:41:16 +00001852 bool CacheCodeCompletionResults) {
Douglas Gregorabc563f2010-07-19 21:46:24 +00001853 // Create the AST unit.
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001854 OwningPtr<ASTUnit> AST;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001855 AST.reset(new ASTUnit(false));
Douglas Gregor0b53cf82011-01-19 01:02:47 +00001856 ConfigureDiags(Diags, 0, 0, *AST, CaptureDiagnostics);
Douglas Gregorabc563f2010-07-19 21:46:24 +00001857 AST->Diagnostics = Diags;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001858 AST->OnlyLocalDecls = OnlyLocalDecls;
Douglas Gregore47be3e2010-11-11 00:39:14 +00001859 AST->CaptureDiagnostics = CaptureDiagnostics;
Douglas Gregor467dc882011-08-25 22:30:56 +00001860 AST->TUKind = TUKind;
Douglas Gregor87c08a52010-08-13 22:48:40 +00001861 AST->ShouldCacheCodeCompletionResults = CacheCodeCompletionResults;
Ted Kremenek4f327862011-03-21 18:40:17 +00001862 AST->Invocation = CI;
Douglas Gregorabc563f2010-07-19 21:46:24 +00001863
Ted Kremenekb547eeb2011-03-18 02:06:56 +00001864 // Recover resources if we crash before exiting this method.
Ted Kremenek25a11e12011-03-22 01:15:24 +00001865 llvm::CrashRecoveryContextCleanupRegistrar<ASTUnit>
1866 ASTUnitCleanup(AST.get());
David Blaikied6471f72011-09-25 23:23:43 +00001867 llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
1868 llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
Ted Kremenek25a11e12011-03-22 01:15:24 +00001869 DiagCleanup(Diags.getPtr());
Ted Kremenekb547eeb2011-03-18 02:06:56 +00001870
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001871 return AST->LoadFromCompilerInvocation(PrecompilePreamble)? 0 : AST.take();
Daniel Dunbar521bf9c2009-12-01 09:51:01 +00001872}
Daniel Dunbar7b556682009-12-02 03:23:45 +00001873
1874ASTUnit *ASTUnit::LoadFromCommandLine(const char **ArgBegin,
1875 const char **ArgEnd,
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00001876 IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
Chris Lattner5f9e2722011-07-23 10:55:15 +00001877 StringRef ResourceFilesPath,
Daniel Dunbar7b556682009-12-02 03:23:45 +00001878 bool OnlyLocalDecls,
Douglas Gregore47be3e2010-11-11 00:39:14 +00001879 bool CaptureDiagnostics,
Douglas Gregor4db64a42010-01-23 00:14:00 +00001880 RemappedFile *RemappedFiles,
Douglas Gregora88084b2010-02-18 18:08:43 +00001881 unsigned NumRemappedFiles,
Argyrios Kyrtzidis299a4a92011-03-08 23:35:24 +00001882 bool RemappedFilesKeepOriginalName,
Douglas Gregordf95a132010-08-09 20:45:32 +00001883 bool PrecompilePreamble,
Douglas Gregor467dc882011-08-25 22:30:56 +00001884 TranslationUnitKind TUKind,
Argyrios Kyrtzidisbef35c92012-03-07 01:51:17 +00001885 bool CacheCodeCompletionResults,
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001886 bool AllowPCHWithCompilerErrors,
Erik Verbruggen6a91d382012-04-12 10:11:59 +00001887 bool SkipFunctionBodies,
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001888 OwningPtr<ASTUnit> *ErrAST) {
Douglas Gregor28019772010-04-05 23:52:57 +00001889 if (!Diags.getPtr()) {
Douglas Gregor3687e9d2010-04-05 21:10:19 +00001890 // No diagnostics engine was provided, so create our own diagnostics object
1891 // with the default options.
1892 DiagnosticOptions DiagOpts;
Douglas Gregor0b53cf82011-01-19 01:02:47 +00001893 Diags = CompilerInstance::createDiagnostics(DiagOpts, ArgEnd - ArgBegin,
1894 ArgBegin);
Douglas Gregor3687e9d2010-04-05 21:10:19 +00001895 }
Daniel Dunbar7b556682009-12-02 03:23:45 +00001896
Chris Lattner5f9e2722011-07-23 10:55:15 +00001897 SmallVector<StoredDiagnostic, 4> StoredDiagnostics;
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001898
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00001899 IntrusiveRefCntPtr<CompilerInvocation> CI;
Douglas Gregore47be3e2010-11-11 00:39:14 +00001900
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001901 {
Douglas Gregorf62d43d2011-07-19 16:10:42 +00001902
Douglas Gregore47be3e2010-11-11 00:39:14 +00001903 CaptureDroppedDiagnostics Capture(CaptureDiagnostics, *Diags,
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001904 StoredDiagnostics);
Daniel Dunbar3bd54cc2010-01-25 00:44:02 +00001905
Argyrios Kyrtzidis832316e2011-04-04 23:11:45 +00001906 CI = clang::createInvocationFromCommandLine(
Frits van Bommele9c02652011-07-18 12:00:32 +00001907 llvm::makeArrayRef(ArgBegin, ArgEnd),
1908 Diags);
Argyrios Kyrtzidis054e4f52011-04-04 21:38:51 +00001909 if (!CI)
Argyrios Kyrtzidis4e03c2b2011-03-07 22:45:01 +00001910 return 0;
Daniel Dunbar7b556682009-12-02 03:23:45 +00001911 }
Douglas Gregore47be3e2010-11-11 00:39:14 +00001912
Douglas Gregor4db64a42010-01-23 00:14:00 +00001913 // Override any files that need remapping
Argyrios Kyrtzidisb1c86492011-03-05 01:03:53 +00001914 for (unsigned I = 0; I != NumRemappedFiles; ++I) {
1915 FilenameOrMemBuf fileOrBuf = RemappedFiles[I].second;
1916 if (const llvm::MemoryBuffer *
1917 memBuf = fileOrBuf.dyn_cast<const llvm::MemoryBuffer *>()) {
1918 CI->getPreprocessorOpts().addRemappedFile(RemappedFiles[I].first, memBuf);
1919 } else {
1920 const char *fname = fileOrBuf.get<const char *>();
1921 CI->getPreprocessorOpts().addRemappedFile(RemappedFiles[I].first, fname);
1922 }
1923 }
Argyrios Kyrtzidisbef35c92012-03-07 01:51:17 +00001924 PreprocessorOptions &PPOpts = CI->getPreprocessorOpts();
1925 PPOpts.RemappedFilesKeepOriginalName = RemappedFilesKeepOriginalName;
1926 PPOpts.AllowPCHWithCompilerErrors = AllowPCHWithCompilerErrors;
Douglas Gregor4db64a42010-01-23 00:14:00 +00001927
Daniel Dunbar8b9adfe2009-12-15 00:06:45 +00001928 // Override the resources path.
Daniel Dunbar807b0612010-01-30 21:47:16 +00001929 CI->getHeaderSearchOpts().ResourceDir = ResourceFilesPath;
Daniel Dunbar7b556682009-12-02 03:23:45 +00001930
Erik Verbruggen6a91d382012-04-12 10:11:59 +00001931 CI->getFrontendOpts().SkipFunctionBodies = SkipFunctionBodies;
1932
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001933 // Create the AST unit.
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00001934 OwningPtr<ASTUnit> AST;
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001935 AST.reset(new ASTUnit(false));
Douglas Gregor0b53cf82011-01-19 01:02:47 +00001936 ConfigureDiags(Diags, ArgBegin, ArgEnd, *AST, CaptureDiagnostics);
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001937 AST->Diagnostics = Diags;
Ted Kremenekd04a9822011-11-17 23:01:17 +00001938 Diags = 0; // Zero out now to ease cleanup during crash recovery.
Anders Carlsson0d8d7e62011-03-18 18:22:40 +00001939 AST->FileSystemOpts = CI->getFileSystemOpts();
Ted Kremenek4f327862011-03-21 18:40:17 +00001940 AST->FileMgr = new FileManager(AST->FileSystemOpts);
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001941 AST->OnlyLocalDecls = OnlyLocalDecls;
Douglas Gregore47be3e2010-11-11 00:39:14 +00001942 AST->CaptureDiagnostics = CaptureDiagnostics;
Douglas Gregor467dc882011-08-25 22:30:56 +00001943 AST->TUKind = TUKind;
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001944 AST->ShouldCacheCodeCompletionResults = CacheCodeCompletionResults;
1945 AST->NumStoredDiagnosticsFromDriver = StoredDiagnostics.size();
Douglas Gregor4cd912a2010-10-12 00:50:20 +00001946 AST->StoredDiagnostics.swap(StoredDiagnostics);
Ted Kremenek4f327862011-03-21 18:40:17 +00001947 AST->Invocation = CI;
Ted Kremenekd04a9822011-11-17 23:01:17 +00001948 CI = 0; // Zero out now to ease cleanup during crash recovery.
Ted Kremenekb547eeb2011-03-18 02:06:56 +00001949
1950 // Recover resources if we crash before exiting this method.
Ted Kremenek25a11e12011-03-22 01:15:24 +00001951 llvm::CrashRecoveryContextCleanupRegistrar<ASTUnit>
1952 ASTUnitCleanup(AST.get());
Ted Kremenekb547eeb2011-03-18 02:06:56 +00001953
Argyrios Kyrtzidise722ed62012-04-11 02:11:16 +00001954 if (AST->LoadFromCompilerInvocation(PrecompilePreamble)) {
1955 // Some error occurred, if caller wants to examine diagnostics, pass it the
1956 // ASTUnit.
1957 if (ErrAST) {
1958 AST->StoredDiagnostics.swap(AST->FailedParseDiagnostics);
1959 ErrAST->swap(AST);
1960 }
1961 return 0;
1962 }
1963
1964 return AST.take();
Daniel Dunbar7b556682009-12-02 03:23:45 +00001965}
Douglas Gregorabc563f2010-07-19 21:46:24 +00001966
1967bool ASTUnit::Reparse(RemappedFile *RemappedFiles, unsigned NumRemappedFiles) {
Ted Kremenek4f327862011-03-21 18:40:17 +00001968 if (!Invocation)
Douglas Gregorabc563f2010-07-19 21:46:24 +00001969 return true;
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +00001970
1971 clearFileLevelDecls();
Douglas Gregorabc563f2010-07-19 21:46:24 +00001972
Douglas Gregor213f18b2010-10-28 15:44:59 +00001973 SimpleTimer ParsingTimer(WantTiming);
Benjamin Krameredfb7ec2010-11-09 20:00:56 +00001974 ParsingTimer.setOutput("Reparsing " + getMainFileName());
Douglas Gregor213f18b2010-10-28 15:44:59 +00001975
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001976 // Remap files.
Douglas Gregorf128fed2010-08-20 00:02:33 +00001977 PreprocessorOptions &PPOpts = Invocation->getPreprocessorOpts();
Douglas Gregor8ef6c8c2011-02-05 19:42:43 +00001978 PPOpts.DisableStatCache = true;
Douglas Gregorf128fed2010-08-20 00:02:33 +00001979 for (PreprocessorOptions::remapped_file_buffer_iterator
1980 R = PPOpts.remapped_file_buffer_begin(),
1981 REnd = PPOpts.remapped_file_buffer_end();
1982 R != REnd;
1983 ++R) {
1984 delete R->second;
1985 }
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001986 Invocation->getPreprocessorOpts().clearRemappedFiles();
Argyrios Kyrtzidisb1c86492011-03-05 01:03:53 +00001987 for (unsigned I = 0; I != NumRemappedFiles; ++I) {
1988 FilenameOrMemBuf fileOrBuf = RemappedFiles[I].second;
1989 if (const llvm::MemoryBuffer *
1990 memBuf = fileOrBuf.dyn_cast<const llvm::MemoryBuffer *>()) {
1991 Invocation->getPreprocessorOpts().addRemappedFile(RemappedFiles[I].first,
1992 memBuf);
1993 } else {
1994 const char *fname = fileOrBuf.get<const char *>();
1995 Invocation->getPreprocessorOpts().addRemappedFile(RemappedFiles[I].first,
1996 fname);
1997 }
1998 }
Douglas Gregorcc5888d2010-07-31 00:40:00 +00001999
Douglas Gregoreababfb2010-08-04 05:53:38 +00002000 // If we have a preamble file lying around, or if we might try to
2001 // build a precompiled preamble, do so now.
Douglas Gregor754f3492010-07-24 00:38:13 +00002002 llvm::MemoryBuffer *OverrideMainBuffer = 0;
Ted Kremenek1872b312011-10-27 17:55:18 +00002003 if (!getPreambleFile(this).empty() || PreambleRebuildCounter > 0)
Douglas Gregor2283d792010-08-20 00:59:43 +00002004 OverrideMainBuffer = getMainBufferWithPrecompiledPreamble(*Invocation);
Douglas Gregor175c4a92010-07-23 23:58:40 +00002005
Douglas Gregorabc563f2010-07-19 21:46:24 +00002006 // Clear out the diagnostics state.
Argyrios Kyrtzidise6825d32011-11-03 20:28:19 +00002007 getDiagnostics().Reset();
2008 ProcessWarningOptions(getDiagnostics(), Invocation->getDiagnosticOpts());
Argyrios Kyrtzidis27368f92011-11-03 20:57:33 +00002009 if (OverrideMainBuffer)
2010 getDiagnostics().setNumWarnings(NumWarningsInPreamble);
Argyrios Kyrtzidise6825d32011-11-03 20:28:19 +00002011
Douglas Gregor175c4a92010-07-23 23:58:40 +00002012 // Parse the sources
Douglas Gregor9b7db622011-02-16 18:16:54 +00002013 bool Result = Parse(OverrideMainBuffer);
Argyrios Kyrtzidis2fe17fc2011-10-31 21:25:31 +00002014
2015 // If we're caching global code-completion results, and the top-level
2016 // declarations have changed, clear out the code-completion cache.
2017 if (!Result && ShouldCacheCodeCompletionResults &&
2018 CurrentTopLevelHashValue != CompletionCacheTopLevelHashValue)
2019 CacheCodeCompletionResults();
Douglas Gregor9b7db622011-02-16 18:16:54 +00002020
Argyrios Kyrtzidis28a83f52012-04-10 17:23:48 +00002021 // We now need to clear out the completion info related to this translation
2022 // unit; it'll be recreated if necessary.
2023 CCTUInfo.reset();
Douglas Gregor8fa0a802011-08-04 20:04:59 +00002024
Douglas Gregor175c4a92010-07-23 23:58:40 +00002025 return Result;
Douglas Gregorabc563f2010-07-19 21:46:24 +00002026}
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002027
Douglas Gregor87c08a52010-08-13 22:48:40 +00002028//----------------------------------------------------------------------------//
2029// Code completion
2030//----------------------------------------------------------------------------//
2031
2032namespace {
2033 /// \brief Code completion consumer that combines the cached code-completion
2034 /// results from an ASTUnit with the code-completion results provided to it,
2035 /// then passes the result on to
2036 class AugmentedCodeCompleteConsumer : public CodeCompleteConsumer {
Douglas Gregor3da626b2011-07-07 16:03:39 +00002037 unsigned long long NormalContexts;
Douglas Gregor87c08a52010-08-13 22:48:40 +00002038 ASTUnit &AST;
2039 CodeCompleteConsumer &Next;
2040
2041 public:
2042 AugmentedCodeCompleteConsumer(ASTUnit &AST, CodeCompleteConsumer &Next,
Douglas Gregor8071e422010-08-15 06:18:01 +00002043 bool IncludeMacros, bool IncludeCodePatterns,
2044 bool IncludeGlobals)
2045 : CodeCompleteConsumer(IncludeMacros, IncludeCodePatterns, IncludeGlobals,
Douglas Gregor87c08a52010-08-13 22:48:40 +00002046 Next.isOutputBinary()), AST(AST), Next(Next)
2047 {
2048 // Compute the set of contexts in which we will look when we don't have
2049 // any information about the specific context.
2050 NormalContexts
Douglas Gregor3da626b2011-07-07 16:03:39 +00002051 = (1LL << (CodeCompletionContext::CCC_TopLevel - 1))
2052 | (1LL << (CodeCompletionContext::CCC_ObjCInterface - 1))
2053 | (1LL << (CodeCompletionContext::CCC_ObjCImplementation - 1))
2054 | (1LL << (CodeCompletionContext::CCC_ObjCIvarList - 1))
2055 | (1LL << (CodeCompletionContext::CCC_Statement - 1))
2056 | (1LL << (CodeCompletionContext::CCC_Expression - 1))
2057 | (1LL << (CodeCompletionContext::CCC_ObjCMessageReceiver - 1))
2058 | (1LL << (CodeCompletionContext::CCC_DotMemberAccess - 1))
2059 | (1LL << (CodeCompletionContext::CCC_ArrowMemberAccess - 1))
2060 | (1LL << (CodeCompletionContext::CCC_ObjCPropertyAccess - 1))
2061 | (1LL << (CodeCompletionContext::CCC_ObjCProtocolName - 1))
2062 | (1LL << (CodeCompletionContext::CCC_ParenthesizedExpression - 1))
2063 | (1LL << (CodeCompletionContext::CCC_Recovery - 1));
Douglas Gregor02688102010-09-14 23:59:36 +00002064
David Blaikie4e4d0842012-03-11 07:00:24 +00002065 if (AST.getASTContext().getLangOpts().CPlusPlus)
Douglas Gregor3da626b2011-07-07 16:03:39 +00002066 NormalContexts |= (1LL << (CodeCompletionContext::CCC_EnumTag - 1))
2067 | (1LL << (CodeCompletionContext::CCC_UnionTag - 1))
2068 | (1LL << (CodeCompletionContext::CCC_ClassOrStructTag - 1));
Douglas Gregor87c08a52010-08-13 22:48:40 +00002069 }
2070
2071 virtual void ProcessCodeCompleteResults(Sema &S,
2072 CodeCompletionContext Context,
John McCall0a2c5e22010-08-25 06:19:51 +00002073 CodeCompletionResult *Results,
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002074 unsigned NumResults);
Douglas Gregor87c08a52010-08-13 22:48:40 +00002075
2076 virtual void ProcessOverloadCandidates(Sema &S, unsigned CurrentArg,
2077 OverloadCandidate *Candidates,
2078 unsigned NumCandidates) {
2079 Next.ProcessOverloadCandidates(S, CurrentArg, Candidates, NumCandidates);
2080 }
Douglas Gregor218937c2011-02-01 19:23:04 +00002081
Douglas Gregordae68752011-02-01 22:57:45 +00002082 virtual CodeCompletionAllocator &getAllocator() {
Douglas Gregor218937c2011-02-01 19:23:04 +00002083 return Next.getAllocator();
2084 }
Argyrios Kyrtzidis28a83f52012-04-10 17:23:48 +00002085
2086 virtual CodeCompletionTUInfo &getCodeCompletionTUInfo() {
2087 return Next.getCodeCompletionTUInfo();
2088 }
Douglas Gregor87c08a52010-08-13 22:48:40 +00002089 };
2090}
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002091
Douglas Gregor5f808c22010-08-16 21:18:39 +00002092/// \brief Helper function that computes which global names are hidden by the
2093/// local code-completion results.
Ted Kremenekc198f612010-11-07 06:11:36 +00002094static void CalculateHiddenNames(const CodeCompletionContext &Context,
2095 CodeCompletionResult *Results,
2096 unsigned NumResults,
2097 ASTContext &Ctx,
2098 llvm::StringSet<llvm::BumpPtrAllocator> &HiddenNames){
Douglas Gregor5f808c22010-08-16 21:18:39 +00002099 bool OnlyTagNames = false;
2100 switch (Context.getKind()) {
Douglas Gregor52779fb2010-09-23 23:01:17 +00002101 case CodeCompletionContext::CCC_Recovery:
Douglas Gregor5f808c22010-08-16 21:18:39 +00002102 case CodeCompletionContext::CCC_TopLevel:
2103 case CodeCompletionContext::CCC_ObjCInterface:
2104 case CodeCompletionContext::CCC_ObjCImplementation:
2105 case CodeCompletionContext::CCC_ObjCIvarList:
2106 case CodeCompletionContext::CCC_ClassStructUnion:
2107 case CodeCompletionContext::CCC_Statement:
2108 case CodeCompletionContext::CCC_Expression:
2109 case CodeCompletionContext::CCC_ObjCMessageReceiver:
Douglas Gregor3da626b2011-07-07 16:03:39 +00002110 case CodeCompletionContext::CCC_DotMemberAccess:
2111 case CodeCompletionContext::CCC_ArrowMemberAccess:
2112 case CodeCompletionContext::CCC_ObjCPropertyAccess:
Douglas Gregor5f808c22010-08-16 21:18:39 +00002113 case CodeCompletionContext::CCC_Namespace:
2114 case CodeCompletionContext::CCC_Type:
Douglas Gregor2ccccb32010-08-23 18:23:48 +00002115 case CodeCompletionContext::CCC_Name:
2116 case CodeCompletionContext::CCC_PotentiallyQualifiedName:
Douglas Gregor02688102010-09-14 23:59:36 +00002117 case CodeCompletionContext::CCC_ParenthesizedExpression:
Douglas Gregor0f91c8c2011-07-30 06:55:39 +00002118 case CodeCompletionContext::CCC_ObjCInterfaceName:
Douglas Gregor5f808c22010-08-16 21:18:39 +00002119 break;
2120
2121 case CodeCompletionContext::CCC_EnumTag:
2122 case CodeCompletionContext::CCC_UnionTag:
2123 case CodeCompletionContext::CCC_ClassOrStructTag:
2124 OnlyTagNames = true;
2125 break;
2126
2127 case CodeCompletionContext::CCC_ObjCProtocolName:
Douglas Gregor1fbb4472010-08-24 20:21:13 +00002128 case CodeCompletionContext::CCC_MacroName:
2129 case CodeCompletionContext::CCC_MacroNameUse:
Douglas Gregorf29c5232010-08-24 22:20:20 +00002130 case CodeCompletionContext::CCC_PreprocessorExpression:
Douglas Gregor721f3592010-08-25 18:41:16 +00002131 case CodeCompletionContext::CCC_PreprocessorDirective:
Douglas Gregor59a66942010-08-25 18:04:30 +00002132 case CodeCompletionContext::CCC_NaturalLanguage:
Douglas Gregor458433d2010-08-26 15:07:07 +00002133 case CodeCompletionContext::CCC_SelectorName:
Douglas Gregor1a480c42010-08-27 17:35:51 +00002134 case CodeCompletionContext::CCC_TypeQualifiers:
Douglas Gregor52779fb2010-09-23 23:01:17 +00002135 case CodeCompletionContext::CCC_Other:
Douglas Gregor5c722c702011-02-18 23:30:37 +00002136 case CodeCompletionContext::CCC_OtherWithMacros:
Douglas Gregor3da626b2011-07-07 16:03:39 +00002137 case CodeCompletionContext::CCC_ObjCInstanceMessage:
2138 case CodeCompletionContext::CCC_ObjCClassMessage:
2139 case CodeCompletionContext::CCC_ObjCCategoryName:
Douglas Gregor721f3592010-08-25 18:41:16 +00002140 // We're looking for nothing, or we're looking for names that cannot
2141 // be hidden.
Douglas Gregor5f808c22010-08-16 21:18:39 +00002142 return;
2143 }
2144
John McCall0a2c5e22010-08-25 06:19:51 +00002145 typedef CodeCompletionResult Result;
Douglas Gregor5f808c22010-08-16 21:18:39 +00002146 for (unsigned I = 0; I != NumResults; ++I) {
2147 if (Results[I].Kind != Result::RK_Declaration)
2148 continue;
2149
2150 unsigned IDNS
2151 = Results[I].Declaration->getUnderlyingDecl()->getIdentifierNamespace();
2152
2153 bool Hiding = false;
2154 if (OnlyTagNames)
2155 Hiding = (IDNS & Decl::IDNS_Tag);
2156 else {
2157 unsigned HiddenIDNS = (Decl::IDNS_Type | Decl::IDNS_Member |
Douglas Gregora5fb7c32010-08-16 23:05:20 +00002158 Decl::IDNS_Namespace | Decl::IDNS_Ordinary |
2159 Decl::IDNS_NonMemberOperator);
David Blaikie4e4d0842012-03-11 07:00:24 +00002160 if (Ctx.getLangOpts().CPlusPlus)
Douglas Gregor5f808c22010-08-16 21:18:39 +00002161 HiddenIDNS |= Decl::IDNS_Tag;
2162 Hiding = (IDNS & HiddenIDNS);
2163 }
2164
2165 if (!Hiding)
2166 continue;
2167
2168 DeclarationName Name = Results[I].Declaration->getDeclName();
2169 if (IdentifierInfo *Identifier = Name.getAsIdentifierInfo())
2170 HiddenNames.insert(Identifier->getName());
2171 else
2172 HiddenNames.insert(Name.getAsString());
2173 }
2174}
2175
2176
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002177void AugmentedCodeCompleteConsumer::ProcessCodeCompleteResults(Sema &S,
2178 CodeCompletionContext Context,
John McCall0a2c5e22010-08-25 06:19:51 +00002179 CodeCompletionResult *Results,
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002180 unsigned NumResults) {
2181 // Merge the results we were given with the results we cached.
2182 bool AddedResult = false;
Douglas Gregor5f808c22010-08-16 21:18:39 +00002183 unsigned InContexts
Douglas Gregor52779fb2010-09-23 23:01:17 +00002184 = (Context.getKind() == CodeCompletionContext::CCC_Recovery? NormalContexts
NAKAMURA Takumi01a429a2011-08-17 01:46:16 +00002185 : (1ULL << (Context.getKind() - 1)));
Douglas Gregor5f808c22010-08-16 21:18:39 +00002186 // Contains the set of names that are hidden by "local" completion results.
Ted Kremenekc198f612010-11-07 06:11:36 +00002187 llvm::StringSet<llvm::BumpPtrAllocator> HiddenNames;
John McCall0a2c5e22010-08-25 06:19:51 +00002188 typedef CodeCompletionResult Result;
Chris Lattner5f9e2722011-07-23 10:55:15 +00002189 SmallVector<Result, 8> AllResults;
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002190 for (ASTUnit::cached_completion_iterator
Douglas Gregor5535d572010-08-16 21:23:13 +00002191 C = AST.cached_completion_begin(),
2192 CEnd = AST.cached_completion_end();
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002193 C != CEnd; ++C) {
2194 // If the context we are in matches any of the contexts we are
2195 // interested in, we'll add this result.
2196 if ((C->ShowInContexts & InContexts) == 0)
2197 continue;
2198
2199 // If we haven't added any results previously, do so now.
2200 if (!AddedResult) {
Douglas Gregor5f808c22010-08-16 21:18:39 +00002201 CalculateHiddenNames(Context, Results, NumResults, S.Context,
2202 HiddenNames);
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002203 AllResults.insert(AllResults.end(), Results, Results + NumResults);
2204 AddedResult = true;
2205 }
2206
Douglas Gregor5f808c22010-08-16 21:18:39 +00002207 // Determine whether this global completion result is hidden by a local
2208 // completion result. If so, skip it.
2209 if (C->Kind != CXCursor_MacroDefinition &&
2210 HiddenNames.count(C->Completion->getTypedText()))
2211 continue;
2212
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002213 // Adjust priority based on similar type classes.
2214 unsigned Priority = C->Priority;
Douglas Gregor4125c372010-08-25 18:03:13 +00002215 CXCursorKind CursorKind = C->Kind;
Douglas Gregor1fbb4472010-08-24 20:21:13 +00002216 CodeCompletionString *Completion = C->Completion;
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002217 if (!Context.getPreferredType().isNull()) {
2218 if (C->Kind == CXCursor_MacroDefinition) {
2219 Priority = getMacroUsagePriority(C->Completion->getTypedText(),
David Blaikie4e4d0842012-03-11 07:00:24 +00002220 S.getLangOpts(),
Douglas Gregor1fbb4472010-08-24 20:21:13 +00002221 Context.getPreferredType()->isAnyPointerType());
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002222 } else if (C->Type) {
2223 CanQualType Expected
Douglas Gregor5535d572010-08-16 21:23:13 +00002224 = S.Context.getCanonicalType(
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002225 Context.getPreferredType().getUnqualifiedType());
2226 SimplifiedTypeClass ExpectedSTC = getSimplifiedTypeClass(Expected);
2227 if (ExpectedSTC == C->TypeClass) {
2228 // We know this type is similar; check for an exact match.
2229 llvm::StringMap<unsigned> &CachedCompletionTypes
Douglas Gregor5535d572010-08-16 21:23:13 +00002230 = AST.getCachedCompletionTypes();
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002231 llvm::StringMap<unsigned>::iterator Pos
Douglas Gregor5535d572010-08-16 21:23:13 +00002232 = CachedCompletionTypes.find(QualType(Expected).getAsString());
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002233 if (Pos != CachedCompletionTypes.end() && Pos->second == C->Type)
2234 Priority /= CCF_ExactTypeMatch;
2235 else
2236 Priority /= CCF_SimilarTypeMatch;
2237 }
2238 }
2239 }
2240
Douglas Gregor1fbb4472010-08-24 20:21:13 +00002241 // Adjust the completion string, if required.
2242 if (C->Kind == CXCursor_MacroDefinition &&
2243 Context.getKind() == CodeCompletionContext::CCC_MacroNameUse) {
2244 // Create a new code-completion string that just contains the
2245 // macro name, without its arguments.
Argyrios Kyrtzidis28a83f52012-04-10 17:23:48 +00002246 CodeCompletionBuilder Builder(getAllocator(), getCodeCompletionTUInfo(),
2247 CCP_CodePattern, C->Availability);
Douglas Gregor218937c2011-02-01 19:23:04 +00002248 Builder.AddTypedTextChunk(C->Completion->getTypedText());
Douglas Gregor4125c372010-08-25 18:03:13 +00002249 CursorKind = CXCursor_NotImplemented;
2250 Priority = CCP_CodePattern;
Douglas Gregor218937c2011-02-01 19:23:04 +00002251 Completion = Builder.TakeString();
Douglas Gregor1fbb4472010-08-24 20:21:13 +00002252 }
2253
Douglas Gregor4125c372010-08-25 18:03:13 +00002254 AllResults.push_back(Result(Completion, Priority, CursorKind,
Douglas Gregor58ddb602010-08-23 23:00:57 +00002255 C->Availability));
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002256 }
2257
2258 // If we did not add any cached completion results, just forward the
2259 // results we were given to the next consumer.
2260 if (!AddedResult) {
2261 Next.ProcessCodeCompleteResults(S, Context, Results, NumResults);
2262 return;
2263 }
Douglas Gregor1e5e6682010-08-26 13:48:20 +00002264
Douglas Gregor697ca6d2010-08-16 20:01:48 +00002265 Next.ProcessCodeCompleteResults(S, Context, AllResults.data(),
2266 AllResults.size());
2267}
2268
2269
2270
Chris Lattner5f9e2722011-07-23 10:55:15 +00002271void ASTUnit::CodeComplete(StringRef File, unsigned Line, unsigned Column,
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002272 RemappedFile *RemappedFiles,
2273 unsigned NumRemappedFiles,
Douglas Gregorcee235c2010-08-05 09:09:23 +00002274 bool IncludeMacros,
2275 bool IncludeCodePatterns,
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002276 CodeCompleteConsumer &Consumer,
David Blaikied6471f72011-09-25 23:23:43 +00002277 DiagnosticsEngine &Diag, LangOptions &LangOpts,
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002278 SourceManager &SourceMgr, FileManager &FileMgr,
Chris Lattner5f9e2722011-07-23 10:55:15 +00002279 SmallVectorImpl<StoredDiagnostic> &StoredDiagnostics,
2280 SmallVectorImpl<const llvm::MemoryBuffer *> &OwnedBuffers) {
Ted Kremenek4f327862011-03-21 18:40:17 +00002281 if (!Invocation)
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002282 return;
2283
Douglas Gregor213f18b2010-10-28 15:44:59 +00002284 SimpleTimer CompletionTimer(WantTiming);
Benjamin Krameredfb7ec2010-11-09 20:00:56 +00002285 CompletionTimer.setOutput("Code completion @ " + File + ":" +
Chris Lattner5f9e2722011-07-23 10:55:15 +00002286 Twine(Line) + ":" + Twine(Column));
Douglas Gregordf95a132010-08-09 20:45:32 +00002287
Dylan Noblesmithc93dc782012-02-20 14:00:23 +00002288 IntrusiveRefCntPtr<CompilerInvocation>
Ted Kremenek4f327862011-03-21 18:40:17 +00002289 CCInvocation(new CompilerInvocation(*Invocation));
2290
2291 FrontendOptions &FrontendOpts = CCInvocation->getFrontendOpts();
2292 PreprocessorOptions &PreprocessorOpts = CCInvocation->getPreprocessorOpts();
Douglas Gregorcee235c2010-08-05 09:09:23 +00002293
Douglas Gregor87c08a52010-08-13 22:48:40 +00002294 FrontendOpts.ShowMacrosInCodeCompletion
2295 = IncludeMacros && CachedCompletionResults.empty();
Douglas Gregorcee235c2010-08-05 09:09:23 +00002296 FrontendOpts.ShowCodePatternsInCodeCompletion = IncludeCodePatterns;
Douglas Gregor8071e422010-08-15 06:18:01 +00002297 FrontendOpts.ShowGlobalSymbolsInCodeCompletion
2298 = CachedCompletionResults.empty();
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002299 FrontendOpts.CodeCompletionAt.FileName = File;
2300 FrontendOpts.CodeCompletionAt.Line = Line;
2301 FrontendOpts.CodeCompletionAt.Column = Column;
2302
2303 // Set the language options appropriately.
Ted Kremenekd3b74d92011-11-17 23:01:24 +00002304 LangOpts = *CCInvocation->getLangOpts();
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002305
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00002306 OwningPtr<CompilerInstance> Clang(new CompilerInstance());
Ted Kremenek03201fb2011-03-21 18:40:07 +00002307
2308 // Recover resources if we crash before exiting this method.
Ted Kremenek25a11e12011-03-22 01:15:24 +00002309 llvm::CrashRecoveryContextCleanupRegistrar<CompilerInstance>
2310 CICleanup(Clang.get());
Ted Kremenek03201fb2011-03-21 18:40:07 +00002311
Ted Kremenek4f327862011-03-21 18:40:17 +00002312 Clang->setInvocation(&*CCInvocation);
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00002313 OriginalSourceFile = Clang->getFrontendOpts().Inputs[0].File;
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002314
2315 // Set up diagnostics, capturing any diagnostics produced.
Ted Kremenek03201fb2011-03-21 18:40:07 +00002316 Clang->setDiagnostics(&Diag);
Ted Kremenek4f327862011-03-21 18:40:17 +00002317 ProcessWarningOptions(Diag, CCInvocation->getDiagnosticOpts());
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002318 CaptureDroppedDiagnostics Capture(true,
Ted Kremenek03201fb2011-03-21 18:40:07 +00002319 Clang->getDiagnostics(),
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002320 StoredDiagnostics);
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002321
2322 // Create the target instance.
Ted Kremenek03201fb2011-03-21 18:40:07 +00002323 Clang->getTargetOpts().Features = TargetFeatures;
2324 Clang->setTarget(TargetInfo::CreateTargetInfo(Clang->getDiagnostics(),
2325 Clang->getTargetOpts()));
2326 if (!Clang->hasTarget()) {
Ted Kremenek4f327862011-03-21 18:40:17 +00002327 Clang->setInvocation(0);
Douglas Gregorbdbb0042010-08-18 22:29:43 +00002328 return;
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002329 }
2330
2331 // Inform the target of the language options.
2332 //
2333 // FIXME: We shouldn't need to do this, the target should be immutable once
2334 // created. This complexity should be lifted elsewhere.
Ted Kremenek03201fb2011-03-21 18:40:07 +00002335 Clang->getTarget().setForcedLangOptions(Clang->getLangOpts());
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002336
Ted Kremenek03201fb2011-03-21 18:40:07 +00002337 assert(Clang->getFrontendOpts().Inputs.size() == 1 &&
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002338 "Invocation must have exactly one source file!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00002339 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_AST &&
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002340 "FIXME: AST inputs not yet supported here!");
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00002341 assert(Clang->getFrontendOpts().Inputs[0].Kind != IK_LLVM_IR &&
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002342 "IR inputs not support here!");
2343
2344
2345 // Use the source and file managers that we were given.
Ted Kremenek03201fb2011-03-21 18:40:07 +00002346 Clang->setFileManager(&FileMgr);
2347 Clang->setSourceManager(&SourceMgr);
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002348
2349 // Remap files.
2350 PreprocessorOpts.clearRemappedFiles();
Douglas Gregorb75d3df2010-08-04 17:07:00 +00002351 PreprocessorOpts.RetainRemappedFileBuffers = true;
Douglas Gregor2283d792010-08-20 00:59:43 +00002352 for (unsigned I = 0; I != NumRemappedFiles; ++I) {
Argyrios Kyrtzidisb1c86492011-03-05 01:03:53 +00002353 FilenameOrMemBuf fileOrBuf = RemappedFiles[I].second;
2354 if (const llvm::MemoryBuffer *
2355 memBuf = fileOrBuf.dyn_cast<const llvm::MemoryBuffer *>()) {
2356 PreprocessorOpts.addRemappedFile(RemappedFiles[I].first, memBuf);
2357 OwnedBuffers.push_back(memBuf);
2358 } else {
2359 const char *fname = fileOrBuf.get<const char *>();
2360 PreprocessorOpts.addRemappedFile(RemappedFiles[I].first, fname);
2361 }
Douglas Gregor2283d792010-08-20 00:59:43 +00002362 }
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002363
Douglas Gregor87c08a52010-08-13 22:48:40 +00002364 // Use the code completion consumer we were given, but adding any cached
2365 // code-completion results.
Douglas Gregor7f946ad2010-11-29 16:13:56 +00002366 AugmentedCodeCompleteConsumer *AugmentedConsumer
2367 = new AugmentedCodeCompleteConsumer(*this, Consumer,
2368 FrontendOpts.ShowMacrosInCodeCompletion,
2369 FrontendOpts.ShowCodePatternsInCodeCompletion,
2370 FrontendOpts.ShowGlobalSymbolsInCodeCompletion);
Ted Kremenek03201fb2011-03-21 18:40:07 +00002371 Clang->setCodeCompletionConsumer(AugmentedConsumer);
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002372
Erik Verbruggen6a91d382012-04-12 10:11:59 +00002373 Clang->getFrontendOpts().SkipFunctionBodies = true;
2374
Douglas Gregordf95a132010-08-09 20:45:32 +00002375 // If we have a precompiled preamble, try to use it. We only allow
2376 // the use of the precompiled preamble if we're if the completion
2377 // point is within the main file, after the end of the precompiled
2378 // preamble.
2379 llvm::MemoryBuffer *OverrideMainBuffer = 0;
Ted Kremenek1872b312011-10-27 17:55:18 +00002380 if (!getPreambleFile(this).empty()) {
Douglas Gregordf95a132010-08-09 20:45:32 +00002381 using llvm::sys::FileStatus;
2382 llvm::sys::PathWithStatus CompleteFilePath(File);
2383 llvm::sys::PathWithStatus MainPath(OriginalSourceFile);
2384 if (const FileStatus *CompleteFileStatus = CompleteFilePath.getFileStatus())
2385 if (const FileStatus *MainStatus = MainPath.getFileStatus())
Argyrios Kyrtzidisc8c97a02011-09-04 03:32:04 +00002386 if (CompleteFileStatus->getUniqueID() == MainStatus->getUniqueID() &&
2387 Line > 1)
Douglas Gregor2283d792010-08-20 00:59:43 +00002388 OverrideMainBuffer
Ted Kremenek4f327862011-03-21 18:40:17 +00002389 = getMainBufferWithPrecompiledPreamble(*CCInvocation, false,
Douglas Gregorc9c29a82010-08-25 18:04:15 +00002390 Line - 1);
Douglas Gregordf95a132010-08-09 20:45:32 +00002391 }
2392
2393 // If the main file has been overridden due to the use of a preamble,
2394 // make that override happen and introduce the preamble.
Douglas Gregor8ef6c8c2011-02-05 19:42:43 +00002395 PreprocessorOpts.DisableStatCache = true;
Douglas Gregor4cd912a2010-10-12 00:50:20 +00002396 StoredDiagnostics.insert(StoredDiagnostics.end(),
Argyrios Kyrtzidis3e9d3262011-10-24 17:25:20 +00002397 stored_diag_begin(),
2398 stored_diag_afterDriver_begin());
Douglas Gregordf95a132010-08-09 20:45:32 +00002399 if (OverrideMainBuffer) {
2400 PreprocessorOpts.addRemappedFile(OriginalSourceFile, OverrideMainBuffer);
2401 PreprocessorOpts.PrecompiledPreambleBytes.first = Preamble.size();
2402 PreprocessorOpts.PrecompiledPreambleBytes.second
2403 = PreambleEndsAtStartOfLine;
Ted Kremenek1872b312011-10-27 17:55:18 +00002404 PreprocessorOpts.ImplicitPCHInclude = getPreambleFile(this);
Douglas Gregordf95a132010-08-09 20:45:32 +00002405 PreprocessorOpts.DisablePCHValidation = true;
2406
Douglas Gregor2283d792010-08-20 00:59:43 +00002407 OwnedBuffers.push_back(OverrideMainBuffer);
Douglas Gregorf128fed2010-08-20 00:02:33 +00002408 } else {
2409 PreprocessorOpts.PrecompiledPreambleBytes.first = 0;
2410 PreprocessorOpts.PrecompiledPreambleBytes.second = false;
Douglas Gregordf95a132010-08-09 20:45:32 +00002411 }
2412
Douglas Gregordca8ee82011-05-06 16:33:08 +00002413 // Disable the preprocessing record
2414 PreprocessorOpts.DetailedRecord = false;
2415
Dylan Noblesmith6f42b622012-02-05 02:12:40 +00002416 OwningPtr<SyntaxOnlyAction> Act;
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002417 Act.reset(new SyntaxOnlyAction);
Douglas Gregor1f6b2b52012-01-20 16:28:04 +00002418 if (Act->BeginSourceFile(*Clang.get(), Clang->getFrontendOpts().Inputs[0])) {
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002419 if (OverrideMainBuffer) {
Ted Kremenek1872b312011-10-27 17:55:18 +00002420 std::string ModName = getPreambleFile(this);
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002421 TranslateStoredDiagnostics(Clang->getModuleManager(), ModName,
2422 getSourceManager(), PreambleDiagnostics,
2423 StoredDiagnostics);
2424 }
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002425 Act->Execute();
2426 Act->EndSourceFile();
2427 }
Argyrios Kyrtzidis7f3a4582012-02-01 19:54:02 +00002428
2429 checkAndSanitizeDiags(StoredDiagnostics, getSourceManager());
Douglas Gregor1abc6bc2010-08-04 16:47:14 +00002430}
Douglas Gregor7ae2faa2010-08-13 05:36:37 +00002431
Chris Lattner5f9e2722011-07-23 10:55:15 +00002432CXSaveError ASTUnit::Save(StringRef File) {
Argyrios Kyrtzidis9cca68d2011-07-21 18:44:49 +00002433 // Write to a temporary file and later rename it to the actual file, to avoid
2434 // possible race conditions.
Dylan Noblesmithf7ccbad2012-02-05 02:13:05 +00002435 SmallString<128> TempPath;
Argyrios Kyrtzidis7e909852011-07-28 00:45:10 +00002436 TempPath = File;
2437 TempPath += "-%%%%%%%%";
2438 int fd;
2439 if (llvm::sys::fs::unique_file(TempPath.str(), fd, TempPath,
2440 /*makeAbsolute=*/false))
Argyrios Kyrtzidis9cca68d2011-07-21 18:44:49 +00002441 return CXSaveError_Unknown;
Argyrios Kyrtzidis9cca68d2011-07-21 18:44:49 +00002442
Douglas Gregor7ae2faa2010-08-13 05:36:37 +00002443 // FIXME: Can we somehow regenerate the stat cache here, or do we need to
2444 // unconditionally create a stat cache when we parse the file?
Argyrios Kyrtzidis7e909852011-07-28 00:45:10 +00002445 llvm::raw_fd_ostream Out(fd, /*shouldClose=*/true);
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00002446
2447 serialize(Out);
2448 Out.close();
Argyrios Kyrtzidis4bd26542012-03-13 02:17:06 +00002449 if (Out.has_error()) {
2450 Out.clear_error();
Argyrios Kyrtzidis9cca68d2011-07-21 18:44:49 +00002451 return CXSaveError_Unknown;
Argyrios Kyrtzidis4bd26542012-03-13 02:17:06 +00002452 }
Argyrios Kyrtzidis9cca68d2011-07-21 18:44:49 +00002453
Rafael Espindola8d2a7012011-12-25 01:18:52 +00002454 if (llvm::sys::fs::rename(TempPath.str(), File)) {
Argyrios Kyrtzidis9cca68d2011-07-21 18:44:49 +00002455 bool exists;
2456 llvm::sys::fs::remove(TempPath.str(), exists);
2457 return CXSaveError_Unknown;
2458 }
2459
2460 return CXSaveError_None;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00002461}
2462
Chris Lattner5f9e2722011-07-23 10:55:15 +00002463bool ASTUnit::serialize(raw_ostream &OS) {
Argyrios Kyrtzidisbef35c92012-03-07 01:51:17 +00002464 bool hasErrors = getDiagnostics().hasErrorOccurred();
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00002465
Daniel Dunbar8d6ff022012-02-29 20:31:23 +00002466 SmallString<128> Buffer;
Douglas Gregor7ae2faa2010-08-13 05:36:37 +00002467 llvm::BitstreamWriter Stream(Buffer);
Sebastian Redla4232eb2010-08-18 23:56:21 +00002468 ASTWriter Writer(Stream);
Douglas Gregor7143aab2011-09-01 17:04:32 +00002469 // FIXME: Handle modules
Argyrios Kyrtzidisbef35c92012-03-07 01:51:17 +00002470 Writer.WriteAST(getSema(), 0, std::string(), 0, "", hasErrors);
Douglas Gregor7ae2faa2010-08-13 05:36:37 +00002471
2472 // Write the generated bitstream to "Out".
Douglas Gregorbdbb0042010-08-18 22:29:43 +00002473 if (!Buffer.empty())
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00002474 OS.write((char *)&Buffer.front(), Buffer.size());
2475
2476 return false;
Douglas Gregor7ae2faa2010-08-13 05:36:37 +00002477}
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002478
2479typedef ContinuousRangeMap<unsigned, int, 2> SLocRemap;
2480
2481static void TranslateSLoc(SourceLocation &L, SLocRemap &Remap) {
2482 unsigned Raw = L.getRawEncoding();
2483 const unsigned MacroBit = 1U << 31;
2484 L = SourceLocation::getFromRawEncoding((Raw & MacroBit) |
2485 ((Raw & ~MacroBit) + Remap.find(Raw & ~MacroBit)->second));
2486}
2487
2488void ASTUnit::TranslateStoredDiagnostics(
2489 ASTReader *MMan,
Chris Lattner5f9e2722011-07-23 10:55:15 +00002490 StringRef ModName,
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002491 SourceManager &SrcMgr,
Chris Lattner5f9e2722011-07-23 10:55:15 +00002492 const SmallVectorImpl<StoredDiagnostic> &Diags,
2493 SmallVectorImpl<StoredDiagnostic> &Out) {
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002494 // The stored diagnostic has the old source manager in it; update
2495 // the locations to refer into the new source manager. We also need to remap
2496 // all the locations to the new view. This includes the diag location, any
2497 // associated source ranges, and the source ranges of associated fix-its.
2498 // FIXME: There should be a cleaner way to do this.
2499
Chris Lattner5f9e2722011-07-23 10:55:15 +00002500 SmallVector<StoredDiagnostic, 4> Result;
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002501 Result.reserve(Diags.size());
2502 assert(MMan && "Don't have a module manager");
Douglas Gregor1a4761e2011-11-30 23:21:26 +00002503 serialization::ModuleFile *Mod = MMan->ModuleMgr.lookup(ModName);
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002504 assert(Mod && "Don't have preamble module");
2505 SLocRemap &Remap = Mod->SLocRemap;
2506 for (unsigned I = 0, N = Diags.size(); I != N; ++I) {
2507 // Rebuild the StoredDiagnostic.
2508 const StoredDiagnostic &SD = Diags[I];
2509 SourceLocation L = SD.getLocation();
2510 TranslateSLoc(L, Remap);
2511 FullSourceLoc Loc(L, SrcMgr);
2512
Chris Lattner5f9e2722011-07-23 10:55:15 +00002513 SmallVector<CharSourceRange, 4> Ranges;
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002514 Ranges.reserve(SD.range_size());
2515 for (StoredDiagnostic::range_iterator I = SD.range_begin(),
2516 E = SD.range_end();
2517 I != E; ++I) {
2518 SourceLocation BL = I->getBegin();
2519 TranslateSLoc(BL, Remap);
2520 SourceLocation EL = I->getEnd();
2521 TranslateSLoc(EL, Remap);
2522 Ranges.push_back(CharSourceRange(SourceRange(BL, EL), I->isTokenRange()));
2523 }
2524
Chris Lattner5f9e2722011-07-23 10:55:15 +00002525 SmallVector<FixItHint, 2> FixIts;
Douglas Gregorf62d43d2011-07-19 16:10:42 +00002526 FixIts.reserve(SD.fixit_size());
2527 for (StoredDiagnostic::fixit_iterator I = SD.fixit_begin(),
2528 E = SD.fixit_end();
2529 I != E; ++I) {
2530 FixIts.push_back(FixItHint());
2531 FixItHint &FH = FixIts.back();
2532 FH.CodeToInsert = I->CodeToInsert;
2533 SourceLocation BL = I->RemoveRange.getBegin();
2534 TranslateSLoc(BL, Remap);
2535 SourceLocation EL = I->RemoveRange.getEnd();
2536 TranslateSLoc(EL, Remap);
2537 FH.RemoveRange = CharSourceRange(SourceRange(BL, EL),
2538 I->RemoveRange.isTokenRange());
2539 }
2540
2541 Result.push_back(StoredDiagnostic(SD.getLevel(), SD.getID(),
2542 SD.getMessage(), Loc, Ranges, FixIts));
2543 }
2544 Result.swap(Out);
2545}
Argyrios Kyrtzidis507097e2011-09-19 20:40:35 +00002546
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +00002547static inline bool compLocDecl(std::pair<unsigned, Decl *> L,
2548 std::pair<unsigned, Decl *> R) {
2549 return L.first < R.first;
2550}
2551
2552void ASTUnit::addFileLevelDecl(Decl *D) {
2553 assert(D);
Douglas Gregor66e87002011-11-07 18:53:57 +00002554
2555 // We only care about local declarations.
2556 if (D->isFromASTFile())
2557 return;
Argyrios Kyrtzidis332cb9b2011-10-31 07:19:59 +00002558
2559 SourceManager &SM = *SourceMgr;
2560 SourceLocation Loc = D->getLocation();
2561 if (Loc.isInvalid() || !SM.isLocalSourceLocation(Loc))
2562 return;
2563
2564 // We only keep track of the file-level declarations of each file.
2565 if (!D->getLexicalDeclContext()->isFileContext())
2566 return;
2567
2568 SourceLocation FileLoc = SM.getFileLoc(Loc);
2569 assert(SM.isLocalSourceLocation(FileLoc));
2570 FileID FID;
2571 unsigned Offset;
2572 llvm::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
2573 if (FID.isInvalid())
2574 return;
2575
2576 LocDeclsTy *&Decls = FileDecls[FID];
2577 if (!Decls)
2578 Decls = new LocDeclsTy();
2579
2580 std::pair<unsigned, Decl *> LocDecl(Offset, D);
2581
2582 if (Decls->empty() || Decls->back().first <= Offset) {
2583 Decls->push_back(LocDecl);
2584 return;
2585 }
2586
2587 LocDeclsTy::iterator
2588 I = std::upper_bound(Decls->begin(), Decls->end(), LocDecl, compLocDecl);
2589
2590 Decls->insert(I, LocDecl);
2591}
2592
Argyrios Kyrtzidisdfb332d2011-11-03 02:20:32 +00002593void ASTUnit::findFileRegionDecls(FileID File, unsigned Offset, unsigned Length,
2594 SmallVectorImpl<Decl *> &Decls) {
2595 if (File.isInvalid())
2596 return;
2597
2598 if (SourceMgr->isLoadedFileID(File)) {
2599 assert(Ctx->getExternalSource() && "No external source!");
2600 return Ctx->getExternalSource()->FindFileRegionDecls(File, Offset, Length,
2601 Decls);
2602 }
2603
2604 FileDeclsTy::iterator I = FileDecls.find(File);
2605 if (I == FileDecls.end())
2606 return;
2607
2608 LocDeclsTy &LocDecls = *I->second;
2609 if (LocDecls.empty())
2610 return;
2611
2612 LocDeclsTy::iterator
2613 BeginIt = std::lower_bound(LocDecls.begin(), LocDecls.end(),
2614 std::make_pair(Offset, (Decl*)0), compLocDecl);
2615 if (BeginIt != LocDecls.begin())
2616 --BeginIt;
2617
Argyrios Kyrtzidisc14a03d2011-11-23 20:27:36 +00002618 // If we are pointing at a top-level decl inside an objc container, we need
2619 // to backtrack until we find it otherwise we will fail to report that the
2620 // region overlaps with an objc container.
2621 while (BeginIt != LocDecls.begin() &&
2622 BeginIt->second->isTopLevelDeclInObjCContainer())
2623 --BeginIt;
2624
Argyrios Kyrtzidisdfb332d2011-11-03 02:20:32 +00002625 LocDeclsTy::iterator
2626 EndIt = std::upper_bound(LocDecls.begin(), LocDecls.end(),
2627 std::make_pair(Offset+Length, (Decl*)0),
2628 compLocDecl);
2629 if (EndIt != LocDecls.end())
2630 ++EndIt;
2631
2632 for (LocDeclsTy::iterator DIt = BeginIt; DIt != EndIt; ++DIt)
2633 Decls.push_back(DIt->second);
2634}
2635
Argyrios Kyrtzidis507097e2011-09-19 20:40:35 +00002636SourceLocation ASTUnit::getLocation(const FileEntry *File,
2637 unsigned Line, unsigned Col) const {
2638 const SourceManager &SM = getSourceManager();
Argyrios Kyrtzidisee0f84f2011-09-26 08:01:41 +00002639 SourceLocation Loc = SM.translateFileLineCol(File, Line, Col);
Argyrios Kyrtzidis507097e2011-09-19 20:40:35 +00002640 return SM.getMacroArgExpandedLocation(Loc);
2641}
2642
2643SourceLocation ASTUnit::getLocation(const FileEntry *File,
2644 unsigned Offset) const {
2645 const SourceManager &SM = getSourceManager();
Argyrios Kyrtzidisee0f84f2011-09-26 08:01:41 +00002646 SourceLocation FileLoc = SM.translateFileLineCol(File, 1, 1);
Argyrios Kyrtzidis507097e2011-09-19 20:40:35 +00002647 return SM.getMacroArgExpandedLocation(FileLoc.getLocWithOffset(Offset));
2648}
2649
Argyrios Kyrtzidisee0f84f2011-09-26 08:01:41 +00002650/// \brief If \arg Loc is a loaded location from the preamble, returns
2651/// the corresponding local location of the main file, otherwise it returns
2652/// \arg Loc.
2653SourceLocation ASTUnit::mapLocationFromPreamble(SourceLocation Loc) {
2654 FileID PreambleID;
2655 if (SourceMgr)
2656 PreambleID = SourceMgr->getPreambleFileID();
2657
2658 if (Loc.isInvalid() || Preamble.empty() || PreambleID.isInvalid())
2659 return Loc;
2660
2661 unsigned Offs;
2662 if (SourceMgr->isInFileID(Loc, PreambleID, &Offs) && Offs < Preamble.size()) {
2663 SourceLocation FileLoc
2664 = SourceMgr->getLocForStartOfFile(SourceMgr->getMainFileID());
2665 return FileLoc.getLocWithOffset(Offs);
2666 }
2667
2668 return Loc;
2669}
2670
2671/// \brief If \arg Loc is a local location of the main file but inside the
2672/// preamble chunk, returns the corresponding loaded location from the
2673/// preamble, otherwise it returns \arg Loc.
2674SourceLocation ASTUnit::mapLocationToPreamble(SourceLocation Loc) {
2675 FileID PreambleID;
2676 if (SourceMgr)
2677 PreambleID = SourceMgr->getPreambleFileID();
2678
2679 if (Loc.isInvalid() || Preamble.empty() || PreambleID.isInvalid())
2680 return Loc;
2681
2682 unsigned Offs;
2683 if (SourceMgr->isInFileID(Loc, SourceMgr->getMainFileID(), &Offs) &&
2684 Offs < Preamble.size()) {
2685 SourceLocation FileLoc = SourceMgr->getLocForStartOfFile(PreambleID);
2686 return FileLoc.getLocWithOffset(Offs);
2687 }
2688
2689 return Loc;
2690}
2691
Argyrios Kyrtzidisf226ff92011-10-25 00:29:50 +00002692bool ASTUnit::isInPreambleFileID(SourceLocation Loc) {
2693 FileID FID;
2694 if (SourceMgr)
2695 FID = SourceMgr->getPreambleFileID();
2696
2697 if (Loc.isInvalid() || FID.isInvalid())
2698 return false;
2699
2700 return SourceMgr->isInFileID(Loc, FID);
2701}
2702
2703bool ASTUnit::isInMainFileID(SourceLocation Loc) {
2704 FileID FID;
2705 if (SourceMgr)
2706 FID = SourceMgr->getMainFileID();
2707
2708 if (Loc.isInvalid() || FID.isInvalid())
2709 return false;
2710
2711 return SourceMgr->isInFileID(Loc, FID);
2712}
2713
2714SourceLocation ASTUnit::getEndOfPreambleFileID() {
2715 FileID FID;
2716 if (SourceMgr)
2717 FID = SourceMgr->getPreambleFileID();
2718
2719 if (FID.isInvalid())
2720 return SourceLocation();
2721
2722 return SourceMgr->getLocForEndOfFile(FID);
2723}
2724
2725SourceLocation ASTUnit::getStartOfMainFileID() {
2726 FileID FID;
2727 if (SourceMgr)
2728 FID = SourceMgr->getMainFileID();
2729
2730 if (FID.isInvalid())
2731 return SourceLocation();
2732
2733 return SourceMgr->getLocForStartOfFile(FID);
2734}
2735
Argyrios Kyrtzidis507097e2011-09-19 20:40:35 +00002736void ASTUnit::PreambleData::countLines() const {
2737 NumLines = 0;
2738 if (empty())
2739 return;
2740
2741 for (std::vector<char>::const_iterator
2742 I = Buffer.begin(), E = Buffer.end(); I != E; ++I) {
2743 if (*I == '\n')
2744 ++NumLines;
2745 }
2746 if (Buffer.back() != '\n')
2747 ++NumLines;
2748}
Argyrios Kyrtzidisa696ece2011-10-10 21:57:12 +00002749
2750#ifndef NDEBUG
2751ASTUnit::ConcurrencyState::ConcurrencyState() {
2752 Mutex = new llvm::sys::MutexImpl(/*recursive=*/true);
2753}
2754
2755ASTUnit::ConcurrencyState::~ConcurrencyState() {
2756 delete static_cast<llvm::sys::MutexImpl *>(Mutex);
2757}
2758
2759void ASTUnit::ConcurrencyState::start() {
2760 bool acquired = static_cast<llvm::sys::MutexImpl *>(Mutex)->tryacquire();
2761 assert(acquired && "Concurrent access to ASTUnit!");
2762}
2763
2764void ASTUnit::ConcurrencyState::finish() {
2765 static_cast<llvm::sys::MutexImpl *>(Mutex)->release();
2766}
2767
2768#else // NDEBUG
2769
2770ASTUnit::ConcurrencyState::ConcurrencyState() {}
2771ASTUnit::ConcurrencyState::~ConcurrencyState() {}
2772void ASTUnit::ConcurrencyState::start() {}
2773void ASTUnit::ConcurrencyState::finish() {}
2774
2775#endif