1 //===--- ASTUnit.h - ASTUnit utility ----------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // ASTUnit utility class.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_CLANG_FRONTEND_ASTUNIT_H
15 #define LLVM_CLANG_FRONTEND_ASTUNIT_H
17 #include "clang/Index/ASTLocation.h"
18 #include "clang/Serialization/ASTBitCodes.h"
19 #include "clang/Sema/Sema.h"
20 #include "clang/Sema/CodeCompleteConsumer.h"
21 #include "clang/Lex/ModuleLoader.h"
22 #include "clang/Lex/PreprocessingRecord.h"
23 #include "clang/Basic/SourceManager.h"
24 #include "clang/Basic/FileManager.h"
25 #include "clang/Basic/FileSystemOptions.h"
26 #include "clang-c/Index.h"
27 #include "llvm/ADT/IntrusiveRefCntPtr.h"
28 #include "llvm/ADT/OwningPtr.h"
29 #include "llvm/ADT/SmallVector.h"
30 #include "llvm/ADT/StringMap.h"
31 #include "llvm/Support/Path.h"
37 #include <sys/types.h>
46 class CodeCompleteConsumer;
47 class CompilerInvocation;
49 class DiagnosticsEngine;
56 class ASTFrontendAction;
60 /// \brief Allocator for a cached set of global code completions.
61 class GlobalCodeCompletionAllocator
62 : public CodeCompletionAllocator,
63 public llvm::RefCountedBase<GlobalCodeCompletionAllocator>
68 /// \brief Utility class for loading a ASTContext from an AST file.
70 class ASTUnit : public ModuleLoader {
72 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> Diagnostics;
73 llvm::IntrusiveRefCntPtr<FileManager> FileMgr;
74 llvm::IntrusiveRefCntPtr<SourceManager> SourceMgr;
75 llvm::OwningPtr<HeaderSearch> HeaderInfo;
76 llvm::IntrusiveRefCntPtr<TargetInfo> Target;
77 llvm::IntrusiveRefCntPtr<Preprocessor> PP;
78 llvm::IntrusiveRefCntPtr<ASTContext> Ctx;
80 FileSystemOptions FileSystemOpts;
82 /// \brief The AST consumer that received information about the translation
83 /// unit as it was parsed or loaded.
84 llvm::OwningPtr<ASTConsumer> Consumer;
86 /// \brief The semantic analysis object used to type-check the translation
88 llvm::OwningPtr<Sema> TheSema;
90 /// Optional owned invocation, just used to make the invocation used in
91 /// LoadFromCommandLine available.
92 llvm::IntrusiveRefCntPtr<CompilerInvocation> Invocation;
94 /// \brief The set of target features.
96 /// FIXME: each time we reparse, we need to restore the set of target
97 /// features from this vector, because TargetInfo::CreateTargetInfo()
98 /// mangles the target options in place. Yuck!
99 std::vector<std::string> TargetFeatures;
101 // OnlyLocalDecls - when true, walking this AST should only visit declarations
102 // that come from the AST itself, not from included precompiled headers.
103 // FIXME: This is temporary; eventually, CIndex will always do this.
106 /// \brief Whether to capture any diagnostics produced.
107 bool CaptureDiagnostics;
109 /// \brief Track whether the main file was loaded from an AST or not.
112 /// \brief What kind of translation unit this AST represents.
113 TranslationUnitKind TUKind;
115 /// \brief Whether we should time each operation.
118 /// \brief Whether the ASTUnit should delete the remapped buffers.
119 bool OwnsRemappedFileBuffers;
121 /// Track the top-level decls which appeared in an ASTUnit which was loaded
122 /// from a source file.
124 // FIXME: This is just an optimization hack to avoid deserializing large parts
125 // of a PCH file when using the Index library on an ASTUnit loaded from
126 // source. In the long term we should make the Index library use efficient and
127 // more scalable search mechanisms.
128 std::vector<Decl*> TopLevelDecls;
130 /// The name of the original source file used to generate this ASTUnit.
131 std::string OriginalSourceFile;
133 // Critical optimization when using clang_getCursor().
136 /// \brief The set of diagnostics produced when creating the preamble.
137 SmallVector<StoredDiagnostic, 4> PreambleDiagnostics;
139 /// \brief The set of diagnostics produced when creating this
140 /// translation unit.
141 SmallVector<StoredDiagnostic, 4> StoredDiagnostics;
143 /// \brief The number of stored diagnostics that come from the driver
146 /// Diagnostics that come from the driver are retained from one parse to
148 unsigned NumStoredDiagnosticsFromDriver;
150 /// \brief Temporary files that should be removed when the ASTUnit is
152 SmallVector<llvm::sys::Path, 4> TemporaryFiles;
154 /// \brief Counter that determines when we want to try building a
155 /// precompiled preamble.
157 /// If zero, we will never build a precompiled preamble. Otherwise,
158 /// it's treated as a counter that decrements each time we reparse
159 /// without the benefit of a precompiled preamble. When it hits 1,
160 /// we'll attempt to rebuild the precompiled header. This way, if
161 /// building the precompiled preamble fails, we won't try again for
162 /// some number of calls.
163 unsigned PreambleRebuildCounter;
165 /// \brief The file in which the precompiled preamble is stored.
166 std::string PreambleFile;
170 const FileEntry *File;
171 std::vector<char> Buffer;
172 mutable unsigned NumLines;
175 PreambleData() : File(0), NumLines(0) { }
177 void assign(const FileEntry *F, const char *begin, const char *end) {
179 Buffer.assign(begin, end);
183 void clear() { Buffer.clear(); File = 0; NumLines = 0; }
185 size_t size() const { return Buffer.size(); }
186 bool empty() const { return Buffer.empty(); }
188 const char *getBufferStart() const { return &Buffer[0]; }
190 unsigned getNumLines() const {
197 SourceRange getSourceRange(const SourceManager &SM) const {
198 SourceLocation FileLoc = SM.getLocForStartOfFile(SM.getPreambleFileID());
199 return SourceRange(FileLoc, FileLoc.getLocWithOffset(size()-1));
203 void countLines() const;
206 const PreambleData &getPreambleData() const {
212 /// \brief The contents of the preamble that has been precompiled to
214 PreambleData Preamble;
216 /// \brief Whether the preamble ends at the start of a new line.
218 /// Used to inform the lexer as to whether it's starting at the beginning of
219 /// a line after skipping the preamble.
220 bool PreambleEndsAtStartOfLine;
222 /// \brief The size of the source buffer that we've reserved for the main
223 /// file within the precompiled preamble.
224 unsigned PreambleReservedSize;
226 /// \brief Keeps track of the files that were used when computing the
227 /// preamble, with both their buffer size and their modification time.
229 /// If any of the files have changed from one compile to the next,
230 /// the preamble must be thrown away.
231 llvm::StringMap<std::pair<off_t, time_t> > FilesInPreamble;
233 /// \brief When non-NULL, this is the buffer used to store the contents of
234 /// the main file when it has been padded for use with the precompiled
236 llvm::MemoryBuffer *SavedMainFileBuffer;
238 /// \brief When non-NULL, this is the buffer used to store the
239 /// contents of the preamble when it has been padded to build the
240 /// precompiled preamble.
241 llvm::MemoryBuffer *PreambleBuffer;
243 /// \brief The number of warnings that occurred while parsing the preamble.
245 /// This value will be used to restore the state of the \c DiagnosticsEngine
246 /// object when re-using the precompiled preamble. Note that only the
247 /// number of warnings matters, since we will not save the preamble
248 /// when any errors are present.
249 unsigned NumWarningsInPreamble;
251 /// \brief A list of the serialization ID numbers for each of the top-level
252 /// declarations parsed within the precompiled preamble.
253 std::vector<serialization::DeclID> TopLevelDeclsInPreamble;
255 /// \brief Whether we should be caching code-completion results.
256 bool ShouldCacheCodeCompletionResults;
258 /// \brief Whether we want to include nested macro expansions in the
259 /// detailed preprocessing record.
260 bool NestedMacroExpansions;
262 /// \brief The language options used when we load an AST file.
263 LangOptions ASTFileLangOpts;
265 static void ConfigureDiags(llvm::IntrusiveRefCntPtr<DiagnosticsEngine> &Diags,
266 const char **ArgBegin, const char **ArgEnd,
267 ASTUnit &AST, bool CaptureDiagnostics);
269 void TranslateStoredDiagnostics(ASTReader *MMan, StringRef ModName,
270 SourceManager &SrcMan,
271 const SmallVectorImpl<StoredDiagnostic> &Diags,
272 SmallVectorImpl<StoredDiagnostic> &Out);
275 /// \brief A cached code-completion result, which may be introduced in one of
276 /// many different contexts.
277 struct CachedCodeCompletionResult {
278 /// \brief The code-completion string corresponding to this completion
280 CodeCompletionString *Completion;
282 /// \brief A bitmask that indicates which code-completion contexts should
283 /// contain this completion result.
285 /// The bits in the bitmask correspond to the values of
286 /// CodeCompleteContext::Kind. To map from a completion context kind to a
287 /// bit, subtract one from the completion context kind and shift 1 by that
288 /// number of bits. Many completions can occur in several different
290 unsigned ShowInContexts;
292 /// \brief The priority given to this code-completion result.
295 /// \brief The libclang cursor kind corresponding to this code-completion
299 /// \brief The availability of this code-completion result.
300 CXAvailabilityKind Availability;
302 /// \brief The simplified type class for a non-macro completion result.
303 SimplifiedTypeClass TypeClass;
305 /// \brief The type of a non-macro completion result, stored as a unique
306 /// integer used by the string map of cached completion types.
308 /// This value will be zero if the type is not known, or a unique value
309 /// determined by the formatted type string. Se \c CachedCompletionTypes
310 /// for more information.
314 /// \brief Retrieve the mapping from formatted type names to unique type
316 llvm::StringMap<unsigned> &getCachedCompletionTypes() {
317 return CachedCompletionTypes;
320 /// \brief Retrieve the allocator used to cache global code completions.
321 llvm::IntrusiveRefCntPtr<GlobalCodeCompletionAllocator>
322 getCachedCompletionAllocator() {
323 return CachedCompletionAllocator;
326 /// \brief Retrieve the allocator used to cache global code completions.
327 /// Creates the allocator if it doesn't already exist.
328 llvm::IntrusiveRefCntPtr<GlobalCodeCompletionAllocator>
329 getCursorCompletionAllocator() {
330 if (!CursorCompletionAllocator.getPtr()) {
331 CursorCompletionAllocator = new GlobalCodeCompletionAllocator;
333 return CursorCompletionAllocator;
337 /// \brief Allocator used to store cached code completions.
338 llvm::IntrusiveRefCntPtr<GlobalCodeCompletionAllocator>
339 CachedCompletionAllocator;
341 /// \brief Allocator used to store code completions for arbitrary cursors.
342 llvm::IntrusiveRefCntPtr<GlobalCodeCompletionAllocator>
343 CursorCompletionAllocator;
345 /// \brief The set of cached code-completion results.
346 std::vector<CachedCodeCompletionResult> CachedCompletionResults;
348 /// \brief A mapping from the formatted type name to a unique number for that
349 /// type, which is used for type equality comparisons.
350 llvm::StringMap<unsigned> CachedCompletionTypes;
352 /// \brief A string hash of the top-level declaration and macro definition
353 /// names processed the last time that we reparsed the file.
355 /// This hash value is used to determine when we need to refresh the
356 /// global code-completion cache.
357 unsigned CompletionCacheTopLevelHashValue;
359 /// \brief A string hash of the top-level declaration and macro definition
360 /// names processed the last time that we reparsed the precompiled preamble.
362 /// This hash value is used to determine when we need to refresh the
363 /// global code-completion cache after a rebuild of the precompiled preamble.
364 unsigned PreambleTopLevelHashValue;
366 /// \brief The current hash value for the top-level declaration and macro
368 unsigned CurrentTopLevelHashValue;
370 /// \brief Bit used by CIndex to mark when a translation unit may be in an
371 /// inconsistent state, and is not safe to free.
372 unsigned UnsafeToFree : 1;
374 /// \brief Cache any "global" code-completion results, so that we can avoid
375 /// recomputing them with each completion.
376 void CacheCodeCompletionResults();
378 /// \brief Clear out and deallocate
379 void ClearCachedCompletionResults();
381 ASTUnit(const ASTUnit&); // DO NOT IMPLEMENT
382 ASTUnit &operator=(const ASTUnit &); // DO NOT IMPLEMENT
384 explicit ASTUnit(bool MainFileIsAST);
386 void CleanTemporaryFiles();
387 bool Parse(llvm::MemoryBuffer *OverrideMainBuffer);
389 std::pair<llvm::MemoryBuffer *, std::pair<unsigned, bool> >
390 ComputePreamble(CompilerInvocation &Invocation,
391 unsigned MaxLines, bool &CreatedBuffer);
393 llvm::MemoryBuffer *getMainBufferWithPrecompiledPreamble(
394 const CompilerInvocation &PreambleInvocationIn,
395 bool AllowRebuild = true,
396 unsigned MaxLines = 0);
397 void RealizeTopLevelDeclsFromPreamble();
399 /// \brief Allows us to assert that ASTUnit is not being used concurrently,
400 /// which is not supported.
402 /// Clients should create instances of the ConcurrencyCheck class whenever
403 /// using the ASTUnit in a way that isn't intended to be concurrent, which is
404 /// just about any usage.
405 /// Becomes a noop in release mode; only useful for debug mode checking.
406 class ConcurrencyState {
407 void *Mutex; // a llvm::sys::MutexImpl in debug;
416 ConcurrencyState ConcurrencyCheckValue;
419 class ConcurrencyCheck {
423 explicit ConcurrencyCheck(ASTUnit &Self)
426 Self.ConcurrencyCheckValue.start();
428 ~ConcurrencyCheck() {
429 Self.ConcurrencyCheckValue.finish();
432 friend class ConcurrencyCheck;
436 bool isMainFileAST() const { return MainFileIsAST; }
438 bool isUnsafeToFree() const { return UnsafeToFree; }
439 void setUnsafeToFree(bool Value) { UnsafeToFree = Value; }
441 const DiagnosticsEngine &getDiagnostics() const { return *Diagnostics; }
442 DiagnosticsEngine &getDiagnostics() { return *Diagnostics; }
444 const SourceManager &getSourceManager() const { return *SourceMgr; }
445 SourceManager &getSourceManager() { return *SourceMgr; }
447 const Preprocessor &getPreprocessor() const { return *PP; }
448 Preprocessor &getPreprocessor() { return *PP; }
450 const ASTContext &getASTContext() const { return *Ctx; }
451 ASTContext &getASTContext() { return *Ctx; }
453 void setASTContext(ASTContext *ctx) { Ctx = ctx; }
455 bool hasSema() const { return TheSema; }
456 Sema &getSema() const {
457 assert(TheSema && "ASTUnit does not have a Sema object!");
461 const FileManager &getFileManager() const { return *FileMgr; }
462 FileManager &getFileManager() { return *FileMgr; }
464 const FileSystemOptions &getFileSystemOpts() const { return FileSystemOpts; }
466 const std::string &getOriginalSourceFileName();
468 /// \brief Add a temporary file that the ASTUnit depends on.
470 /// This file will be erased when the ASTUnit is destroyed.
471 void addTemporaryFile(const llvm::sys::Path &TempFile) {
472 TemporaryFiles.push_back(TempFile);
475 bool getOnlyLocalDecls() const { return OnlyLocalDecls; }
477 bool getOwnsRemappedFileBuffers() const { return OwnsRemappedFileBuffers; }
478 void setOwnsRemappedFileBuffers(bool val) { OwnsRemappedFileBuffers = val; }
480 void setLastASTLocation(ASTLocation ALoc) { LastLoc = ALoc; }
481 ASTLocation getLastASTLocation() const { return LastLoc; }
484 StringRef getMainFileName() const;
486 typedef std::vector<Decl *>::iterator top_level_iterator;
488 top_level_iterator top_level_begin() {
489 assert(!isMainFileAST() && "Invalid call for AST based ASTUnit!");
490 if (!TopLevelDeclsInPreamble.empty())
491 RealizeTopLevelDeclsFromPreamble();
492 return TopLevelDecls.begin();
495 top_level_iterator top_level_end() {
496 assert(!isMainFileAST() && "Invalid call for AST based ASTUnit!");
497 if (!TopLevelDeclsInPreamble.empty())
498 RealizeTopLevelDeclsFromPreamble();
499 return TopLevelDecls.end();
502 std::size_t top_level_size() const {
503 assert(!isMainFileAST() && "Invalid call for AST based ASTUnit!");
504 return TopLevelDeclsInPreamble.size() + TopLevelDecls.size();
507 bool top_level_empty() const {
508 assert(!isMainFileAST() && "Invalid call for AST based ASTUnit!");
509 return TopLevelDeclsInPreamble.empty() && TopLevelDecls.empty();
512 /// \brief Add a new top-level declaration.
513 void addTopLevelDecl(Decl *D) {
514 TopLevelDecls.push_back(D);
517 /// \brief Add a new top-level declaration, identified by its ID in
518 /// the precompiled preamble.
519 void addTopLevelDeclFromPreamble(serialization::DeclID D) {
520 TopLevelDeclsInPreamble.push_back(D);
523 /// \brief Retrieve a reference to the current top-level name hash value.
525 /// Note: This is used internally by the top-level tracking action
526 unsigned &getCurrentTopLevelHashValue() { return CurrentTopLevelHashValue; }
528 /// \brief Get the source location for the given file:line:col triplet.
530 /// The difference with SourceManager::getLocation is that this method checks
531 /// whether the requested location points inside the precompiled preamble
532 /// in which case the returned source location will be a "loaded" one.
533 SourceLocation getLocation(const FileEntry *File,
534 unsigned Line, unsigned Col) const;
536 /// \brief Get the source location for the given file:offset pair.
537 SourceLocation getLocation(const FileEntry *File, unsigned Offset) const;
539 /// \brief If \arg Loc is a loaded location from the preamble, returns
540 /// the corresponding local location of the main file, otherwise it returns
542 SourceLocation mapLocationFromPreamble(SourceLocation Loc);
544 /// \brief If \arg Loc is a local location of the main file but inside the
545 /// preamble chunk, returns the corresponding loaded location from the
546 /// preamble, otherwise it returns \arg Loc.
547 SourceLocation mapLocationToPreamble(SourceLocation Loc);
549 /// \brief \see mapLocationFromPreamble.
550 SourceRange mapRangeFromPreamble(SourceRange R) {
551 return SourceRange(mapLocationFromPreamble(R.getBegin()),
552 mapLocationFromPreamble(R.getEnd()));
555 /// \brief \see mapLocationToPreamble.
556 SourceRange mapRangeToPreamble(SourceRange R) {
557 return SourceRange(mapLocationToPreamble(R.getBegin()),
558 mapLocationToPreamble(R.getEnd()));
561 // Retrieve the diagnostics associated with this AST
562 typedef const StoredDiagnostic *stored_diag_iterator;
563 stored_diag_iterator stored_diag_begin() const {
564 return StoredDiagnostics.begin();
566 stored_diag_iterator stored_diag_end() const {
567 return StoredDiagnostics.end();
569 unsigned stored_diag_size() const { return StoredDiagnostics.size(); }
571 SmallVector<StoredDiagnostic, 4> &getStoredDiagnostics() {
572 return StoredDiagnostics;
575 typedef std::vector<CachedCodeCompletionResult>::iterator
576 cached_completion_iterator;
578 cached_completion_iterator cached_completion_begin() {
579 return CachedCompletionResults.begin();
582 cached_completion_iterator cached_completion_end() {
583 return CachedCompletionResults.end();
586 unsigned cached_completion_size() const {
587 return CachedCompletionResults.size();
590 llvm::MemoryBuffer *getBufferForFile(StringRef Filename,
591 std::string *ErrorStr = 0);
593 /// \brief Determine what kind of translation unit this AST represents.
594 TranslationUnitKind getTranslationUnitKind() const { return TUKind; }
596 typedef llvm::PointerUnion<const char *, const llvm::MemoryBuffer *>
598 /// \brief A mapping from a file name to the memory buffer that stores the
599 /// remapped contents of that file.
600 typedef std::pair<std::string, FilenameOrMemBuf> RemappedFile;
602 /// \brief Create a ASTUnit. Gets ownership of the passed CompilerInvocation.
603 static ASTUnit *create(CompilerInvocation *CI,
604 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> Diags);
606 /// \brief Create a ASTUnit from an AST file.
608 /// \param Filename - The AST file to load.
610 /// \param Diags - The diagnostics engine to use for reporting errors; its
611 /// lifetime is expected to extend past that of the returned ASTUnit.
613 /// \returns - The initialized ASTUnit or null if the AST failed to load.
614 static ASTUnit *LoadFromASTFile(const std::string &Filename,
615 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
616 const FileSystemOptions &FileSystemOpts,
617 bool OnlyLocalDecls = false,
618 RemappedFile *RemappedFiles = 0,
619 unsigned NumRemappedFiles = 0,
620 bool CaptureDiagnostics = false);
623 /// \brief Helper function for \c LoadFromCompilerInvocation() and
624 /// \c LoadFromCommandLine(), which loads an AST from a compiler invocation.
626 /// \param PrecompilePreamble Whether to precompile the preamble of this
627 /// translation unit, to improve the performance of reparsing.
629 /// \returns \c true if a catastrophic failure occurred (which means that the
630 /// \c ASTUnit itself is invalid), or \c false otherwise.
631 bool LoadFromCompilerInvocation(bool PrecompilePreamble);
635 /// \brief Create an ASTUnit from a source file, via a CompilerInvocation
636 /// object, by invoking the optionally provided ASTFrontendAction.
638 /// \param CI - The compiler invocation to use; it must have exactly one input
639 /// source file. The ASTUnit takes ownership of the CompilerInvocation object.
641 /// \param Diags - The diagnostics engine to use for reporting errors; its
642 /// lifetime is expected to extend past that of the returned ASTUnit.
644 /// \param Action - The ASTFrontendAction to invoke. Its ownership is not
647 /// \param Unit - optionally an already created ASTUnit. Its ownership is not
649 static ASTUnit *LoadFromCompilerInvocationAction(CompilerInvocation *CI,
650 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
651 ASTFrontendAction *Action = 0,
654 /// LoadFromCompilerInvocation - Create an ASTUnit from a source file, via a
655 /// CompilerInvocation object.
657 /// \param CI - The compiler invocation to use; it must have exactly one input
658 /// source file. The ASTUnit takes ownership of the CompilerInvocation object.
660 /// \param Diags - The diagnostics engine to use for reporting errors; its
661 /// lifetime is expected to extend past that of the returned ASTUnit.
663 // FIXME: Move OnlyLocalDecls, UseBumpAllocator to setters on the ASTUnit, we
664 // shouldn't need to specify them at construction time.
665 static ASTUnit *LoadFromCompilerInvocation(CompilerInvocation *CI,
666 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
667 bool OnlyLocalDecls = false,
668 bool CaptureDiagnostics = false,
669 bool PrecompilePreamble = false,
670 TranslationUnitKind TUKind = TU_Complete,
671 bool CacheCodeCompletionResults = false,
672 bool NestedMacroExpansions = true);
674 /// LoadFromCommandLine - Create an ASTUnit from a vector of command line
675 /// arguments, which must specify exactly one source file.
677 /// \param ArgBegin - The beginning of the argument vector.
679 /// \param ArgEnd - The end of the argument vector.
681 /// \param Diags - The diagnostics engine to use for reporting errors; its
682 /// lifetime is expected to extend past that of the returned ASTUnit.
684 /// \param ResourceFilesPath - The path to the compiler resource files.
686 // FIXME: Move OnlyLocalDecls, UseBumpAllocator to setters on the ASTUnit, we
687 // shouldn't need to specify them at construction time.
688 static ASTUnit *LoadFromCommandLine(const char **ArgBegin,
690 llvm::IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
691 StringRef ResourceFilesPath,
692 bool OnlyLocalDecls = false,
693 bool CaptureDiagnostics = false,
694 RemappedFile *RemappedFiles = 0,
695 unsigned NumRemappedFiles = 0,
696 bool RemappedFilesKeepOriginalName = true,
697 bool PrecompilePreamble = false,
698 TranslationUnitKind TUKind = TU_Complete,
699 bool CacheCodeCompletionResults = false,
700 bool NestedMacroExpansions = true);
702 /// \brief Reparse the source files using the same command-line options that
703 /// were originally used to produce this translation unit.
705 /// \returns True if a failure occurred that causes the ASTUnit not to
706 /// contain any translation-unit information, false otherwise.
707 bool Reparse(RemappedFile *RemappedFiles = 0,
708 unsigned NumRemappedFiles = 0);
710 /// \brief Perform code completion at the given file, line, and
711 /// column within this translation unit.
713 /// \param File The file in which code completion will occur.
715 /// \param Line The line at which code completion will occur.
717 /// \param Column The column at which code completion will occur.
719 /// \param IncludeMacros Whether to include macros in the code-completion
722 /// \param IncludeCodePatterns Whether to include code patterns (such as a
723 /// for loop) in the code-completion results.
725 /// FIXME: The Diag, LangOpts, SourceMgr, FileMgr, StoredDiagnostics, and
726 /// OwnedBuffers parameters are all disgusting hacks. They will go away.
727 void CodeComplete(StringRef File, unsigned Line, unsigned Column,
728 RemappedFile *RemappedFiles, unsigned NumRemappedFiles,
729 bool IncludeMacros, bool IncludeCodePatterns,
730 CodeCompleteConsumer &Consumer,
731 DiagnosticsEngine &Diag, LangOptions &LangOpts,
732 SourceManager &SourceMgr, FileManager &FileMgr,
733 SmallVectorImpl<StoredDiagnostic> &StoredDiagnostics,
734 SmallVectorImpl<const llvm::MemoryBuffer *> &OwnedBuffers);
736 /// \brief Save this translation unit to a file with the given name.
738 /// \returns An indication of whether the save was successful or not.
739 CXSaveError Save(StringRef File);
741 /// \brief Serialize this translation unit with the given output stream.
743 /// \returns True if an error occurred, false otherwise.
744 bool serialize(raw_ostream &OS);
746 virtual ModuleKey loadModule(SourceLocation ImportLoc,
747 IdentifierInfo &ModuleName,
748 SourceLocation ModuleNameLoc) {
749 // ASTUnit doesn't know how to load modules (not that this matters).