clang  3.9.0
Tooling.h
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1 //===--- Tooling.h - Framework for standalone Clang tools -------*- C++ -*-===//
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 // This file implements functions to run clang tools standalone instead
11 // of running them as a plugin.
12 //
13 // A ClangTool is initialized with a CompilationDatabase and a set of files
14 // to run over. The tool will then run a user-specified FrontendAction over
15 // all TUs in which the given files are compiled.
16 //
17 // It is also possible to run a FrontendAction over a snippet of code by
18 // calling runToolOnCode, which is useful for unit testing.
19 //
20 // Applications that need more fine grained control over how to run
21 // multiple FrontendActions over code can use ToolInvocation.
22 //
23 // Example tools:
24 // - running clang -fsyntax-only over source code from an editor to get
25 // fast syntax checks
26 // - running match/replace tools over C++ code
27 //
28 //===----------------------------------------------------------------------===//
29 
30 #ifndef LLVM_CLANG_TOOLING_TOOLING_H
31 #define LLVM_CLANG_TOOLING_TOOLING_H
32 
33 #include "clang/AST/ASTConsumer.h"
35 #include "clang/Basic/Diagnostic.h"
37 #include "clang/Basic/LLVM.h"
38 #include "clang/Driver/Util.h"
40 #include "clang/Lex/ModuleLoader.h"
43 #include "llvm/ADT/StringMap.h"
44 #include "llvm/ADT/Twine.h"
45 #include "llvm/Option/Option.h"
46 #include <memory>
47 #include <string>
48 #include <vector>
49 
50 namespace clang {
51 
52 namespace driver {
53 class Compilation;
54 } // end namespace driver
55 
56 class CompilerInvocation;
57 class SourceManager;
58 class FrontendAction;
59 
60 namespace tooling {
61 
62 /// \brief Interface to process a clang::CompilerInvocation.
63 ///
64 /// If your tool is based on FrontendAction, you should be deriving from
65 /// FrontendActionFactory instead.
66 class ToolAction {
67 public:
68  virtual ~ToolAction();
69 
70  /// \brief Perform an action for an invocation.
71  virtual bool
73  std::shared_ptr<PCHContainerOperations> PCHContainerOps,
74  DiagnosticConsumer *DiagConsumer) = 0;
75 };
76 
77 /// \brief Interface to generate clang::FrontendActions.
78 ///
79 /// Having a factory interface allows, for example, a new FrontendAction to be
80 /// created for each translation unit processed by ClangTool. This class is
81 /// also a ToolAction which uses the FrontendActions created by create() to
82 /// process each translation unit.
84 public:
85  ~FrontendActionFactory() override;
86 
87  /// \brief Invokes the compiler with a FrontendAction created by create().
88  bool runInvocation(clang::CompilerInvocation *Invocation, FileManager *Files,
89  std::shared_ptr<PCHContainerOperations> PCHContainerOps,
90  DiagnosticConsumer *DiagConsumer) override;
91 
92  /// \brief Returns a new clang::FrontendAction.
93  ///
94  /// The caller takes ownership of the returned action.
95  virtual clang::FrontendAction *create() = 0;
96 };
97 
98 /// \brief Returns a new FrontendActionFactory for a given type.
99 ///
100 /// T must derive from clang::FrontendAction.
101 ///
102 /// Example:
103 /// FrontendActionFactory *Factory =
104 /// newFrontendActionFactory<clang::SyntaxOnlyAction>();
105 template <typename T>
106 std::unique_ptr<FrontendActionFactory> newFrontendActionFactory();
107 
108 /// \brief Callbacks called before and after each source file processed by a
109 /// FrontendAction created by the FrontedActionFactory returned by \c
110 /// newFrontendActionFactory.
112 public:
113  virtual ~SourceFileCallbacks() {}
114 
115  /// \brief Called before a source file is processed by a FrontEndAction.
116  /// \see clang::FrontendAction::BeginSourceFileAction
117  virtual bool handleBeginSource(CompilerInstance &CI, StringRef Filename) {
118  return true;
119  }
120 
121  /// \brief Called after a source file is processed by a FrontendAction.
122  /// \see clang::FrontendAction::EndSourceFileAction
123  virtual void handleEndSource() {}
124 };
125 
126 /// \brief Returns a new FrontendActionFactory for any type that provides an
127 /// implementation of newASTConsumer().
128 ///
129 /// FactoryT must implement: ASTConsumer *newASTConsumer().
130 ///
131 /// Example:
132 /// struct ProvidesASTConsumers {
133 /// clang::ASTConsumer *newASTConsumer();
134 /// } Factory;
135 /// std::unique_ptr<FrontendActionFactory> FactoryAdapter(
136 /// newFrontendActionFactory(&Factory));
137 template <typename FactoryT>
138 inline std::unique_ptr<FrontendActionFactory> newFrontendActionFactory(
139  FactoryT *ConsumerFactory, SourceFileCallbacks *Callbacks = nullptr);
140 
141 /// \brief Runs (and deletes) the tool on 'Code' with the -fsyntax-only flag.
142 ///
143 /// \param ToolAction The action to run over the code.
144 /// \param Code C++ code.
145 /// \param FileName The file name which 'Code' will be mapped as.
146 /// \param PCHContainerOps The PCHContainerOperations for loading and creating
147 /// clang modules.
148 ///
149 /// \return - True if 'ToolAction' was successfully executed.
150 bool runToolOnCode(clang::FrontendAction *ToolAction, const Twine &Code,
151  const Twine &FileName = "input.cc",
152  std::shared_ptr<PCHContainerOperations> PCHContainerOps =
153  std::make_shared<PCHContainerOperations>());
154 
155 /// The first part of the pair is the filename, the second part the
156 /// file-content.
157 typedef std::vector<std::pair<std::string, std::string>> FileContentMappings;
158 
159 /// \brief Runs (and deletes) the tool on 'Code' with the -fsyntax-only flag and
160 /// with additional other flags.
161 ///
162 /// \param ToolAction The action to run over the code.
163 /// \param Code C++ code.
164 /// \param Args Additional flags to pass on.
165 /// \param FileName The file name which 'Code' will be mapped as.
166 /// \param ToolName The name of the binary running the tool. Standard library
167 /// header paths will be resolved relative to this.
168 /// \param PCHContainerOps The PCHContainerOperations for loading and creating
169 /// clang modules.
170 ///
171 /// \return - True if 'ToolAction' was successfully executed.
173  clang::FrontendAction *ToolAction, const Twine &Code,
174  const std::vector<std::string> &Args, const Twine &FileName = "input.cc",
175  const Twine &ToolName = "clang-tool",
176  std::shared_ptr<PCHContainerOperations> PCHContainerOps =
177  std::make_shared<PCHContainerOperations>(),
178  const FileContentMappings &VirtualMappedFiles = FileContentMappings());
179 
180 /// \brief Builds an AST for 'Code'.
181 ///
182 /// \param Code C++ code.
183 /// \param FileName The file name which 'Code' will be mapped as.
184 /// \param PCHContainerOps The PCHContainerOperations for loading and creating
185 /// clang modules.
186 ///
187 /// \return The resulting AST or null if an error occurred.
188 std::unique_ptr<ASTUnit>
189 buildASTFromCode(const Twine &Code, const Twine &FileName = "input.cc",
190  std::shared_ptr<PCHContainerOperations> PCHContainerOps =
191  std::make_shared<PCHContainerOperations>());
192 
193 /// \brief Builds an AST for 'Code' with additional flags.
194 ///
195 /// \param Code C++ code.
196 /// \param Args Additional flags to pass on.
197 /// \param FileName The file name which 'Code' will be mapped as.
198 /// \param ToolName The name of the binary running the tool. Standard library
199 /// header paths will be resolved relative to this.
200 /// \param PCHContainerOps The PCHContainerOperations for loading and creating
201 /// clang modules.
202 ///
203 /// \return The resulting AST or null if an error occurred.
204 std::unique_ptr<ASTUnit> buildASTFromCodeWithArgs(
205  const Twine &Code, const std::vector<std::string> &Args,
206  const Twine &FileName = "input.cc", const Twine &ToolName = "clang-tool",
207  std::shared_ptr<PCHContainerOperations> PCHContainerOps =
208  std::make_shared<PCHContainerOperations>());
209 
210 /// \brief Utility to run a FrontendAction in a single clang invocation.
212 public:
213  /// \brief Create a tool invocation.
214  ///
215  /// \param CommandLine The command line arguments to clang. Note that clang
216  /// uses its binary name (CommandLine[0]) to locate its builtin headers.
217  /// Callers have to ensure that they are installed in a compatible location
218  /// (see clang driver implementation) or mapped in via mapVirtualFile.
219  /// \param FAction The action to be executed. Class takes ownership.
220  /// \param Files The FileManager used for the execution. Class does not take
221  /// ownership.
222  /// \param PCHContainerOps The PCHContainerOperations for loading and creating
223  /// clang modules.
224  ToolInvocation(std::vector<std::string> CommandLine, FrontendAction *FAction,
225  FileManager *Files,
226  std::shared_ptr<PCHContainerOperations> PCHContainerOps =
227  std::make_shared<PCHContainerOperations>());
228 
229  /// \brief Create a tool invocation.
230  ///
231  /// \param CommandLine The command line arguments to clang.
232  /// \param Action The action to be executed.
233  /// \param Files The FileManager used for the execution.
234  /// \param PCHContainerOps The PCHContainerOperations for loading and creating
235  /// clang modules.
236  ToolInvocation(std::vector<std::string> CommandLine, ToolAction *Action,
237  FileManager *Files,
238  std::shared_ptr<PCHContainerOperations> PCHContainerOps);
239 
240  ~ToolInvocation();
241 
242  /// \brief Set a \c DiagnosticConsumer to use during parsing.
244  this->DiagConsumer = DiagConsumer;
245  }
246 
247  /// \brief Map a virtual file to be used while running the tool.
248  ///
249  /// \param FilePath The path at which the content will be mapped.
250  /// \param Content A null terminated buffer of the file's content.
251  // FIXME: remove this when all users have migrated!
252  void mapVirtualFile(StringRef FilePath, StringRef Content);
253 
254  /// \brief Run the clang invocation.
255  ///
256  /// \returns True if there were no errors during execution.
257  bool run();
258 
259  private:
260  void addFileMappingsTo(SourceManager &SourceManager);
261 
262  bool runInvocation(const char *BinaryName,
263  clang::driver::Compilation *Compilation,
264  clang::CompilerInvocation *Invocation,
265  std::shared_ptr<PCHContainerOperations> PCHContainerOps);
266 
267  std::vector<std::string> CommandLine;
268  ToolAction *Action;
269  bool OwnsAction;
270  FileManager *Files;
271  std::shared_ptr<PCHContainerOperations> PCHContainerOps;
272  // Maps <file name> -> <file content>.
273  llvm::StringMap<StringRef> MappedFileContents;
274  DiagnosticConsumer *DiagConsumer;
275 };
276 
277 /// \brief Utility to run a FrontendAction over a set of files.
278 ///
279 /// This class is written to be usable for command line utilities.
280 /// By default the class uses ClangSyntaxOnlyAdjuster to modify
281 /// command line arguments before the arguments are used to run
282 /// a frontend action. One could install an additional command line
283 /// arguments adjuster by calling the appendArgumentsAdjuster() method.
284 class ClangTool {
285  public:
286  /// \brief Constructs a clang tool to run over a list of files.
287  ///
288  /// \param Compilations The CompilationDatabase which contains the compile
289  /// command lines for the given source paths.
290  /// \param SourcePaths The source files to run over. If a source files is
291  /// not found in Compilations, it is skipped.
292  /// \param PCHContainerOps The PCHContainerOperations for loading and creating
293  /// clang modules.
294  ClangTool(const CompilationDatabase &Compilations,
295  ArrayRef<std::string> SourcePaths,
296  std::shared_ptr<PCHContainerOperations> PCHContainerOps =
297  std::make_shared<PCHContainerOperations>());
298 
299  ~ClangTool();
300 
301  /// \brief Set a \c DiagnosticConsumer to use during parsing.
303  this->DiagConsumer = DiagConsumer;
304  }
305 
306  /// \brief Map a virtual file to be used while running the tool.
307  ///
308  /// \param FilePath The path at which the content will be mapped.
309  /// \param Content A null terminated buffer of the file's content.
310  void mapVirtualFile(StringRef FilePath, StringRef Content);
311 
312  /// \brief Append a command line arguments adjuster to the adjuster chain.
313  ///
314  /// \param Adjuster An argument adjuster, which will be run on the output of
315  /// previous argument adjusters.
317 
318  /// \brief Clear the command line arguments adjuster chain.
320 
321  /// Runs an action over all files specified in the command line.
322  ///
323  /// \param Action Tool action.
324  int run(ToolAction *Action);
325 
326  /// \brief Create an AST for each file specified in the command line and
327  /// append them to ASTs.
328  int buildASTs(std::vector<std::unique_ptr<ASTUnit>> &ASTs);
329 
330  /// \brief Returns the file manager used in the tool.
331  ///
332  /// The file manager is shared between all translation units.
333  FileManager &getFiles() { return *Files; }
334 
335  private:
336  const CompilationDatabase &Compilations;
337  std::vector<std::string> SourcePaths;
338  std::shared_ptr<PCHContainerOperations> PCHContainerOps;
339 
343  // Contains a list of pairs (<file name>, <file content>).
344  std::vector< std::pair<StringRef, StringRef> > MappedFileContents;
345  llvm::StringSet<> SeenWorkingDirectories;
346 
347  ArgumentsAdjuster ArgsAdjuster;
348 
349  DiagnosticConsumer *DiagConsumer;
350 };
351 
352 template <typename T>
353 std::unique_ptr<FrontendActionFactory> newFrontendActionFactory() {
354  class SimpleFrontendActionFactory : public FrontendActionFactory {
355  public:
356  clang::FrontendAction *create() override { return new T; }
357  };
358 
359  return std::unique_ptr<FrontendActionFactory>(
360  new SimpleFrontendActionFactory);
361 }
362 
363 template <typename FactoryT>
364 inline std::unique_ptr<FrontendActionFactory> newFrontendActionFactory(
365  FactoryT *ConsumerFactory, SourceFileCallbacks *Callbacks) {
366  class FrontendActionFactoryAdapter : public FrontendActionFactory {
367  public:
368  explicit FrontendActionFactoryAdapter(FactoryT *ConsumerFactory,
369  SourceFileCallbacks *Callbacks)
370  : ConsumerFactory(ConsumerFactory), Callbacks(Callbacks) {}
371 
372  clang::FrontendAction *create() override {
373  return new ConsumerFactoryAdaptor(ConsumerFactory, Callbacks);
374  }
375 
376  private:
377  class ConsumerFactoryAdaptor : public clang::ASTFrontendAction {
378  public:
379  ConsumerFactoryAdaptor(FactoryT *ConsumerFactory,
380  SourceFileCallbacks *Callbacks)
381  : ConsumerFactory(ConsumerFactory), Callbacks(Callbacks) {}
382 
383  std::unique_ptr<clang::ASTConsumer>
384  CreateASTConsumer(clang::CompilerInstance &, StringRef) override {
385  return ConsumerFactory->newASTConsumer();
386  }
387 
388  protected:
389  bool BeginSourceFileAction(CompilerInstance &CI,
390  StringRef Filename) override {
392  return false;
393  if (Callbacks)
394  return Callbacks->handleBeginSource(CI, Filename);
395  return true;
396  }
397  void EndSourceFileAction() override {
398  if (Callbacks)
399  Callbacks->handleEndSource();
401  }
402 
403  private:
404  FactoryT *ConsumerFactory;
405  SourceFileCallbacks *Callbacks;
406  };
407  FactoryT *ConsumerFactory;
408  SourceFileCallbacks *Callbacks;
409  };
410 
411  return std::unique_ptr<FrontendActionFactory>(
412  new FrontendActionFactoryAdapter(ConsumerFactory, Callbacks));
413 }
414 
415 /// \brief Returns the absolute path of \c File, by prepending it with
416 /// the current directory if \c File is not absolute.
417 ///
418 /// Otherwise returns \c File.
419 /// If 'File' starts with "./", the returned path will not contain the "./".
420 /// Otherwise, the returned path will contain the literal path-concatenation of
421 /// the current directory and \c File.
422 ///
423 /// The difference to llvm::sys::fs::make_absolute is the canonicalization this
424 /// does by removing "./" and computing native paths.
425 ///
426 /// \param File Either an absolute or relative path.
427 std::string getAbsolutePath(StringRef File);
428 
429 /// \brief Changes CommandLine to contain implicit flags that would have been
430 /// defined had the compiler driver been invoked through the path InvokedAs.
431 ///
432 /// For example, when called with \c InvokedAs set to `i686-linux-android-g++`,
433 /// the arguments '-target', 'i686-linux-android`, `--driver-mode=g++` will
434 /// be inserted after the first argument in \c CommandLine.
435 ///
436 /// This function will not add new `-target` or `--driver-mode` flags if they
437 /// are already present in `CommandLine` (even if they have different settings
438 /// than would have been inserted).
439 ///
440 /// \pre `llvm::InitializeAllTargets()` has been called.
441 ///
442 /// \param CommandLine the command line used to invoke the compiler driver or
443 /// Clang tool, including the path to the executable as \c CommandLine[0].
444 /// \param InvokedAs the path to the driver used to infer implicit flags.
445 ///
446 /// \note This will not set \c CommandLine[0] to \c InvokedAs. The tooling
447 /// infrastructure expects that CommandLine[0] is a tool path relative to which
448 /// the builtin headers can be found.
449 void addTargetAndModeForProgramName(std::vector<std::string> &CommandLine,
450  StringRef InvokedAs);
451 
452 /// \brief Creates a \c CompilerInvocation.
454  clang::DiagnosticsEngine *Diagnostics,
455  const llvm::opt::ArgStringList &CC1Args);
456 
457 } // end namespace tooling
458 } // end namespace clang
459 
460 #endif // LLVM_CLANG_TOOLING_TOOLING_H
Interface to process a clang::CompilerInvocation.
Definition: Tooling.h:66
void setDiagnosticConsumer(DiagnosticConsumer *DiagConsumer)
Set a DiagnosticConsumer to use during parsing.
Definition: Tooling.h:302
bool runToolOnCode(clang::FrontendAction *ToolAction, const Twine &Code, const Twine &FileName="input.cc", std::shared_ptr< PCHContainerOperations > PCHContainerOps=std::make_shared< PCHContainerOperations >())
Runs (and deletes) the tool on 'Code' with the -fsyntax-only flag.
Definition: Tooling.cpp:104
Implements support for file system lookup, file system caching, and directory search management...
Definition: FileManager.h:117
void mapVirtualFile(StringRef FilePath, StringRef Content)
Map a virtual file to be used while running the tool.
Definition: Tooling.cpp:231
Defines the clang::FileManager interface and associated types.
Abstract base class for actions which can be performed by the frontend.
Utility to run a FrontendAction over a set of files.
Definition: Tooling.h:284
ToolInvocation(std::vector< std::string > CommandLine, FrontendAction *FAction, FileManager *Files, std::shared_ptr< PCHContainerOperations > PCHContainerOps=std::make_shared< PCHContainerOperations >())
Create a tool invocation.
Definition: Tooling.cpp:218
Abstract interface, implemented by clients of the front-end, which formats and prints fully processed...
Definition: Diagnostic.h:1314
const StringRef FilePath
Interface to generate clang::FrontendActions.
Definition: Tooling.h:83
void appendArgumentsAdjuster(ArgumentsAdjuster Adjuster)
Append a command line arguments adjuster to the adjuster chain.
Definition: Tooling.cpp:336
int buildASTs(std::vector< std::unique_ptr< ASTUnit >> &ASTs)
Create an AST for each file specified in the command line and append them to ASTs.
Definition: Tooling.cpp:487
std::unique_ptr< ASTUnit > buildASTFromCodeWithArgs(const Twine &Code, const std::vector< std::string > &Args, const Twine &FileName="input.cc", const Twine &ToolName="clang-tool", std::shared_ptr< PCHContainerOperations > PCHContainerOps=std::make_shared< PCHContainerOperations >())
Builds an AST for 'Code' with additional flags.
Definition: Tooling.cpp:499
virtual void handleEndSource()
Called after a source file is processed by a FrontendAction.
Definition: Tooling.h:123
void clearArgumentsAdjusters()
Clear the command line arguments adjuster chain.
Definition: Tooling.cpp:344
Callbacks called before and after each source file processed by a FrontendAction created by the Front...
Definition: Tooling.h:111
FrontendAction * Action
Definition: Tooling.cpp:201
std::vector< std::pair< std::string, std::string > > FileContentMappings
The first part of the pair is the filename, the second part the file-content.
Definition: Tooling.h:157
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:135
virtual bool BeginSourceFileAction(CompilerInstance &CI, StringRef Filename)
Callback at the start of processing a single input.
void mapVirtualFile(StringRef FilePath, StringRef Content)
Map a virtual file to be used while running the tool.
Definition: Tooling.cpp:332
bool runInvocation(clang::CompilerInvocation *Invocation, FileManager *Files, std::shared_ptr< PCHContainerOperations > PCHContainerOps, DiagnosticConsumer *DiagConsumer) override
Invokes the compiler with a FrontendAction created by create().
Definition: Tooling.cpp:289
std::unique_ptr< FrontendActionFactory > newFrontendActionFactory()
Returns a new FrontendActionFactory for a given type.
Definition: Tooling.h:353
StringRef Filename
Definition: Format.cpp:1194
std::function< CommandLineArguments(const CommandLineArguments &, StringRef Filename)> ArgumentsAdjuster
A prototype of a command line adjuster.
FileManager & getFiles()
Returns the file manager used in the tool.
Definition: Tooling.h:333
bool run()
Run the clang invocation.
Definition: Tooling.cpp:237
std::string getAbsolutePath(StringRef File)
Returns the absolute path of File, by prepending it with the current directory if File is not absolut...
Definition: Tooling.cpp:158
virtual void EndSourceFileAction()
Callback at the end of processing a single input.
void addTargetAndModeForProgramName(std::vector< std::string > &CommandLine, StringRef InvokedAs)
Changes CommandLine to contain implicit flags that would have been defined had the compiler driver be...
Definition: Tooling.cpp:173
void setDiagnosticConsumer(DiagnosticConsumer *DiagConsumer)
Set a DiagnosticConsumer to use during parsing.
Definition: Tooling.h:243
Interface for compilation databases.
StringRef FileName
Definition: Format.cpp:1313
CompilerInstance - Helper class for managing a single instance of the Clang compiler.
ClangTool(const CompilationDatabase &Compilations, ArrayRef< std::string > SourcePaths, std::shared_ptr< PCHContainerOperations > PCHContainerOps=std::make_shared< PCHContainerOperations >())
Constructs a clang tool to run over a list of files.
Definition: Tooling.cpp:316
Abstract base class to use for AST consumer-based frontend actions.
virtual bool handleBeginSource(CompilerInstance &CI, StringRef Filename)
Called before a source file is processed by a FrontEndAction.
Definition: Tooling.h:117
Utility to run a FrontendAction in a single clang invocation.
Definition: Tooling.h:211
virtual bool runInvocation(clang::CompilerInvocation *Invocation, FileManager *Files, std::shared_ptr< PCHContainerOperations > PCHContainerOps, DiagnosticConsumer *DiagConsumer)=0
Perform an action for an invocation.
std::unique_ptr< DiagnosticConsumer > create(StringRef OutputFile, DiagnosticOptions *Diags, bool MergeChildRecords=false)
Returns a DiagnosticConsumer that serializes diagnostics to a bitcode file.
Helper class for holding the data necessary to invoke the compiler.
std::vector< std::string > CommandLine
Defines the Diagnostic-related interfaces.
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:35
bool runToolOnCodeWithArgs(clang::FrontendAction *ToolAction, const Twine &Code, const std::vector< std::string > &Args, const Twine &FileName="input.cc", const Twine &ToolName="clang-tool", std::shared_ptr< PCHContainerOperations > PCHContainerOps=std::make_shared< PCHContainerOperations >(), const FileContentMappings &VirtualMappedFiles=FileContentMappings())
Runs (and deletes) the tool on 'Code' with the -fsyntax-only flag and with additional other flags...
Definition: Tooling.cpp:124
std::unique_ptr< ASTUnit > buildASTFromCode(const Twine &Code, const Twine &FileName="input.cc", std::shared_ptr< PCHContainerOperations > PCHContainerOps=std::make_shared< PCHContainerOperations >())
Builds an AST for 'Code'.
Definition: Tooling.cpp:493
std::vector< std::unique_ptr< ASTUnit > > & ASTs
Definition: Tooling.cpp:464
clang::CompilerInvocation * newInvocation(clang::DiagnosticsEngine *Diagnostics, const llvm::opt::ArgStringList &CC1Args)
Creates a CompilerInvocation.
Definition: Tooling.cpp:90
Defines the clang::FrontendAction interface and various convenience abstract classes (clang::ASTFront...
int run(ToolAction *Action)
Runs an action over all files specified in the command line.
Definition: Tooling.cpp:360
virtual clang::FrontendAction * create()=0
Returns a new clang::FrontendAction.
This class handles loading and caching of source files into memory.