FrontendOptions.h revision d412999a3da6387dbfaf00f7647132082e94310e 
1//===--- FrontendOptions.h --------------------------------------*- 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#ifndef LLVM_CLANG_FRONTEND_FRONTENDOPTIONS_H
11#define LLVM_CLANG_FRONTEND_FRONTENDOPTIONS_H
12
13#include "clang/Frontend/CommandLineSourceLoc.h"
14#include "clang/Sema/CodeCompleteOptions.h"
15#include "llvm/ADT/StringRef.h"
16#include <string>
17#include <vector>
18
19namespace llvm {
20class MemoryBuffer;
21}
22
23namespace clang {
24
25namespace frontend {
26  enum ActionKind {
27    ASTDeclList,            ///< Parse ASTs and list Decl nodes.
28    ASTDump,                ///< Parse ASTs and dump them.
29    ASTDumpXML,             ///< Parse ASTs and dump them in XML.
30    ASTPrint,               ///< Parse ASTs and print them.
31    ASTView,                ///< Parse ASTs and view them in Graphviz.
32    DumpRawTokens,          ///< Dump out raw tokens.
33    DumpTokens,             ///< Dump out preprocessed tokens.
34    EmitAssembly,           ///< Emit a .s file.
35    EmitBC,                 ///< Emit a .bc file.
36    EmitHTML,               ///< Translate input source into HTML.
37    EmitLLVM,               ///< Emit a .ll file.
38    EmitLLVMOnly,           ///< Generate LLVM IR, but do not emit anything.
39    EmitCodeGenOnly,        ///< Generate machine code, but don't emit anything.
40    EmitObj,                ///< Emit a .o file.
41    FixIt,                  ///< Parse and apply any fixits to the source.
42    GenerateModule,         ///< Generate pre-compiled module.
43    GeneratePCH,            ///< Generate pre-compiled header.
44    GeneratePTH,            ///< Generate pre-tokenized header.
45    InitOnly,               ///< Only execute frontend initialization.
46    ModuleFileInfo,         ///< Dump information about a module file.
47    ParseSyntaxOnly,        ///< Parse and perform semantic analysis.
48    PluginAction,           ///< Run a plugin action, \see ActionName.
49    PrintDeclContext,       ///< Print DeclContext and their Decls.
50    PrintPreamble,          ///< Print the "preamble" of the input file
51    PrintPreprocessedInput, ///< -E mode.
52    RewriteMacros,          ///< Expand macros but not \#includes.
53    RewriteObjC,            ///< ObjC->C Rewriter.
54    RewriteTest,            ///< Rewriter playground
55    RunAnalysis,            ///< Run one or more source code analyses.
56    MigrateSource,          ///< Run migrator.
57    RunPreprocessorOnly     ///< Just lex, no output.
58  };
59}
60
61enum InputKind {
62  IK_None,
63  IK_Asm,
64  IK_C,
65  IK_CXX,
66  IK_ObjC,
67  IK_ObjCXX,
68  IK_PreprocessedC,
69  IK_PreprocessedCXX,
70  IK_PreprocessedObjC,
71  IK_PreprocessedObjCXX,
72  IK_OpenCL,
73  IK_CUDA,
74  IK_AST,
75  IK_LLVM_IR
76};
77
78
79/// \brief An input file for the front end.
80class FrontendInputFile {
81  /// \brief The file name, or "-" to read from standard input.
82  std::string File;
83
84  llvm::MemoryBuffer *Buffer;
85
86  /// \brief The kind of input, e.g., C source, AST file, LLVM IR.
87  InputKind Kind;
88
89  /// \brief Whether we're dealing with a 'system' input (vs. a 'user' input).
90  bool IsSystem;
91
92public:
93  FrontendInputFile() : Buffer(0), Kind(IK_None) { }
94  FrontendInputFile(StringRef File, InputKind Kind, bool IsSystem = false)
95    : File(File.str()), Buffer(0), Kind(Kind), IsSystem(IsSystem) { }
96  FrontendInputFile(llvm::MemoryBuffer *buffer, InputKind Kind,
97                    bool IsSystem = false)
98    : Buffer(buffer), Kind(Kind), IsSystem(IsSystem) { }
99
100  InputKind getKind() const { return Kind; }
101  bool isSystem() const { return IsSystem; }
102
103  bool isEmpty() const { return File.empty() && Buffer == 0; }
104  bool isFile() const { return !isBuffer(); }
105  bool isBuffer() const { return Buffer != 0; }
106
107  StringRef getFile() const {
108    assert(isFile());
109    return File;
110  }
111  llvm::MemoryBuffer *getBuffer() const {
112    assert(isBuffer());
113    return Buffer;
114  }
115};
116
117/// FrontendOptions - Options for controlling the behavior of the frontend.
118class FrontendOptions {
119public:
120  unsigned DisableFree : 1;                ///< Disable memory freeing on exit.
121  unsigned RelocatablePCH : 1;             ///< When generating PCH files,
122                                           /// instruct the AST writer to create
123                                           /// relocatable PCH files.
124  unsigned ShowHelp : 1;                   ///< Show the -help text.
125  unsigned ShowStats : 1;                  ///< Show frontend performance
126                                           /// metrics and statistics.
127  unsigned ShowTimers : 1;                 ///< Show timers for individual
128                                           /// actions.
129  unsigned ShowVersion : 1;                ///< Show the -version text.
130  unsigned FixWhatYouCan : 1;              ///< Apply fixes even if there are
131                                           /// unfixable errors.
132  unsigned FixOnlyWarnings : 1;            ///< Apply fixes only for warnings.
133  unsigned FixAndRecompile : 1;            ///< Apply fixes and recompile.
134  unsigned FixToTemporaries : 1;           ///< Apply fixes to temporary files.
135  unsigned ARCMTMigrateEmitARCErrors : 1;  /// Emit ARC errors even if the
136                                           /// migrator can fix them
137  unsigned SkipFunctionBodies : 1;         ///< Skip over function bodies to
138                                           /// speed up parsing in cases you do
139                                           /// not need them (e.g. with code
140                                           /// completion).
141  unsigned UseGlobalModuleIndex : 1;       ///< Whether we can use the
142                                           ///< global module index if available.
143  unsigned GenerateGlobalModuleIndex : 1;  ///< Whether we can generate the
144                                           ///< global module index if needed.
145  unsigned ASTDumpLookups : 1;             ///< Whether we include lookup table
146                                           ///< dumps in AST dumps.
147
148  CodeCompleteOptions CodeCompleteOpts;
149
150  enum {
151    ARCMT_None,
152    ARCMT_Check,
153    ARCMT_Modify,
154    ARCMT_Migrate
155  } ARCMTAction;
156
157  enum {
158    ObjCMT_None = 0,
159    /// \brief Enable migration to modern ObjC literals.
160    ObjCMT_Literals = 0x1,
161    /// \brief Enable migration to modern ObjC subscripting.
162    ObjCMT_Subscripting = 0x2,
163    /// \brief Enable migration to modern ObjC property.
164    ObjCMT_Property = 0x4
165  };
166  unsigned ObjCMTAction;
167
168  std::string MTMigrateDir;
169  std::string ARCMTMigrateReportOut;
170
171  /// The input files and their types.
172  std::vector<FrontendInputFile> Inputs;
173
174  /// The output file, if any.
175  std::string OutputFile;
176
177  /// If given, the new suffix for fix-it rewritten files.
178  std::string FixItSuffix;
179
180  /// If given, filter dumped AST Decl nodes by this substring.
181  std::string ASTDumpFilter;
182
183  /// If given, enable code completion at the provided location.
184  ParsedSourceLocation CodeCompletionAt;
185
186  /// The frontend action to perform.
187  frontend::ActionKind ProgramAction;
188
189  /// The name of the action to run when using a plugin action.
190  std::string ActionName;
191
192  /// Args to pass to the plugin
193  std::vector<std::string> PluginArgs;
194
195  /// The list of plugin actions to run in addition to the normal action.
196  std::vector<std::string> AddPluginActions;
197
198  /// Args to pass to the additional plugins
199  std::vector<std::vector<std::string> > AddPluginArgs;
200
201  /// The list of plugins to load.
202  std::vector<std::string> Plugins;
203
204  /// \brief The list of AST files to merge.
205  std::vector<std::string> ASTMergeFiles;
206
207  /// \brief A list of arguments to forward to LLVM's option processing; this
208  /// should only be used for debugging and experimental features.
209  std::vector<std::string> LLVMArgs;
210
211  /// \brief File name of the file that will provide record layouts
212  /// (in the format produced by -fdump-record-layouts).
213  std::string OverrideRecordLayoutsFile;
214
215public:
216  FrontendOptions() :
217    DisableFree(false), RelocatablePCH(false), ShowHelp(false),
218    ShowStats(false), ShowTimers(false), ShowVersion(false),
219    FixWhatYouCan(false), FixOnlyWarnings(false), FixAndRecompile(false),
220    FixToTemporaries(false), ARCMTMigrateEmitARCErrors(false),
221    SkipFunctionBodies(false), UseGlobalModuleIndex(true),
222    GenerateGlobalModuleIndex(true), ASTDumpLookups(false),
223    ARCMTAction(ARCMT_None), ObjCMTAction(ObjCMT_None),
224    ProgramAction(frontend::ParseSyntaxOnly)
225  {}
226
227  /// getInputKindForExtension - Return the appropriate input kind for a file
228  /// extension. For example, "c" would return IK_C.
229  ///
230  /// \return The input kind for the extension, or IK_None if the extension is
231  /// not recognized.
232  static InputKind getInputKindForExtension(StringRef Extension);
233};
234
235}  // end namespace clang
236
237#endif
238