1 //===- CompilerInvocation.h - Compiler Invocation Helper Data ---*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #ifndef LLVM_CLANG_FRONTEND_COMPILERINVOCATION_H
10 #define LLVM_CLANG_FRONTEND_COMPILERINVOCATION_H
12 #include "clang/Basic/CodeGenOptions.h"
13 #include "clang/Basic/DiagnosticOptions.h"
14 #include "clang/Basic/FileSystemOptions.h"
15 #include "clang/Basic/LLVM.h"
16 #include "clang/Basic/LangOptions.h"
17 #include "clang/Basic/LangStandard.h"
18 #include "clang/Frontend/DependencyOutputOptions.h"
19 #include "clang/Frontend/FrontendOptions.h"
20 #include "clang/Frontend/MigratorOptions.h"
21 #include "clang/Frontend/PreprocessorOutputOptions.h"
22 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
23 #include "llvm/ADT/IntrusiveRefCntPtr.h"
24 #include "llvm/ADT/ArrayRef.h"
48 class DiagnosticsEngine;
49 class HeaderSearchOptions;
50 class PreprocessorOptions;
53 /// Fill out Opts based on the options given in Args.
55 /// Args must have been created from the OptTable returned by
56 /// createCC1OptTable().
58 /// When errors are encountered, return false and, if Diags is non-null,
59 /// report the error(s).
60 bool ParseDiagnosticArgs(DiagnosticOptions &Opts, llvm::opt::ArgList &Args,
61 DiagnosticsEngine *Diags = nullptr,
62 bool DefaultDiagColor = true);
64 class CompilerInvocationBase {
66 /// Options controlling the language variant.
67 std::shared_ptr<LangOptions> LangOpts;
69 /// Options controlling the target.
70 std::shared_ptr<TargetOptions> TargetOpts;
72 /// Options controlling the diagnostic engine.
73 IntrusiveRefCntPtr<DiagnosticOptions> DiagnosticOpts;
75 /// Options controlling the \#include directive.
76 std::shared_ptr<HeaderSearchOptions> HeaderSearchOpts;
78 /// Options controlling the preprocessor (aside from \#include handling).
79 std::shared_ptr<PreprocessorOptions> PreprocessorOpts;
81 CompilerInvocationBase();
82 CompilerInvocationBase(const CompilerInvocationBase &X);
83 CompilerInvocationBase &operator=(const CompilerInvocationBase &) = delete;
84 ~CompilerInvocationBase();
86 LangOptions *getLangOpts() { return LangOpts.get(); }
87 const LangOptions *getLangOpts() const { return LangOpts.get(); }
89 TargetOptions &getTargetOpts() { return *TargetOpts.get(); }
90 const TargetOptions &getTargetOpts() const { return *TargetOpts.get(); }
92 DiagnosticOptions &getDiagnosticOpts() const { return *DiagnosticOpts; }
94 HeaderSearchOptions &getHeaderSearchOpts() { return *HeaderSearchOpts; }
96 const HeaderSearchOptions &getHeaderSearchOpts() const {
97 return *HeaderSearchOpts;
100 std::shared_ptr<HeaderSearchOptions> getHeaderSearchOptsPtr() const {
101 return HeaderSearchOpts;
104 std::shared_ptr<PreprocessorOptions> getPreprocessorOptsPtr() {
105 return PreprocessorOpts;
108 PreprocessorOptions &getPreprocessorOpts() { return *PreprocessorOpts; }
110 const PreprocessorOptions &getPreprocessorOpts() const {
111 return *PreprocessorOpts;
115 /// Helper class for holding the data necessary to invoke the compiler.
117 /// This class is designed to represent an abstract "invocation" of the
118 /// compiler, including data such as the include paths, the code generation
119 /// options, the warning flags, and so on.
120 class CompilerInvocation : public CompilerInvocationBase {
121 /// Options controlling the static analyzer.
122 AnalyzerOptionsRef AnalyzerOpts;
124 MigratorOptions MigratorOpts;
126 /// Options controlling IRgen and the backend.
127 CodeGenOptions CodeGenOpts;
129 /// Options controlling dependency output.
130 DependencyOutputOptions DependencyOutputOpts;
132 /// Options controlling file system operations.
133 FileSystemOptions FileSystemOpts;
135 /// Options controlling the frontend itself.
136 FrontendOptions FrontendOpts;
138 /// Options controlling preprocessed output.
139 PreprocessorOutputOptions PreprocessorOutputOpts;
142 CompilerInvocation() : AnalyzerOpts(new AnalyzerOptions()) {}
144 /// @name Utility Methods
147 /// Create a compiler invocation from a list of input options.
148 /// \returns true on success.
150 /// \returns false if an error was encountered while parsing the arguments
151 /// and attempts to recover and continue parsing the rest of the arguments.
152 /// The recovery is best-effort and only guarantees that \p Res will end up in
153 /// one of the vaild-to-access (albeit arbitrary) states.
155 /// \param [out] Res - The resulting invocation.
156 /// \param [in] CommandLineArgs - Array of argument strings, this must not
158 static bool CreateFromArgs(CompilerInvocation &Res,
159 ArrayRef<const char *> CommandLineArgs,
160 DiagnosticsEngine &Diags,
161 const char *Argv0 = nullptr);
163 /// Get the directory where the compiler headers
164 /// reside, relative to the compiler binary (found by the passed in
167 /// \param Argv0 - The program path (from argv[0]), for finding the builtin
169 /// \param MainAddr - The address of main (or some other function in the main
170 /// executable), for finding the builtin compiler path.
171 static std::string GetResourcesPath(const char *Argv0, void *MainAddr);
173 /// Set language defaults for the given input language and
174 /// language standard in the given LangOptions object.
176 /// \param Opts - The LangOptions object to set up.
177 /// \param IK - The input language.
178 /// \param T - The target triple.
179 /// \param PPOpts - The PreprocessorOptions affected.
180 /// \param LangStd - The input language standard.
181 static void setLangDefaults(LangOptions &Opts, InputKind IK,
182 const llvm::Triple &T, PreprocessorOptions &PPOpts,
183 LangStandard::Kind LangStd = LangStandard::lang_unspecified);
185 /// Retrieve a module hash string that is suitable for uniquely
186 /// identifying the conditions under which the module was built.
187 std::string getModuleHash() const;
189 using StringAllocator = llvm::function_ref<const char *(const llvm::Twine &)>;
190 /// Generate a cc1-compatible command line arguments from this instance.
192 /// \param [out] Args - The generated arguments. Note that the caller is
193 /// responsible for inserting the path to the clang executable and "-cc1" if
195 /// \param SA - A function that given a Twine can allocate storage for a given
196 /// command line argument and return a pointer to the newly allocated string.
197 /// The returned pointer is what gets appended to Args.
198 void generateCC1CommandLine(llvm::SmallVectorImpl<const char *> &Args,
199 StringAllocator SA) const;
202 /// @name Option Subgroups
205 AnalyzerOptionsRef getAnalyzerOpts() const { return AnalyzerOpts; }
207 MigratorOptions &getMigratorOpts() { return MigratorOpts; }
208 const MigratorOptions &getMigratorOpts() const { return MigratorOpts; }
210 CodeGenOptions &getCodeGenOpts() { return CodeGenOpts; }
211 const CodeGenOptions &getCodeGenOpts() const { return CodeGenOpts; }
213 DependencyOutputOptions &getDependencyOutputOpts() {
214 return DependencyOutputOpts;
217 const DependencyOutputOptions &getDependencyOutputOpts() const {
218 return DependencyOutputOpts;
221 FileSystemOptions &getFileSystemOpts() { return FileSystemOpts; }
223 const FileSystemOptions &getFileSystemOpts() const {
224 return FileSystemOpts;
227 FrontendOptions &getFrontendOpts() { return FrontendOpts; }
228 const FrontendOptions &getFrontendOpts() const { return FrontendOpts; }
230 PreprocessorOutputOptions &getPreprocessorOutputOpts() {
231 return PreprocessorOutputOpts;
234 const PreprocessorOutputOptions &getPreprocessorOutputOpts() const {
235 return PreprocessorOutputOpts;
241 /// Parse options for flags that expose marshalling information in their
242 /// table-gen definition
244 /// \param Args - The argument list containing the arguments to parse
245 /// \param Diags - The DiagnosticsEngine associated with CreateFromArgs
246 /// \returns - True if parsing was successful, false otherwise
247 bool parseSimpleArgs(const llvm::opt::ArgList &Args,
248 DiagnosticsEngine &Diags);
251 IntrusiveRefCntPtr<llvm::vfs::FileSystem>
252 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
253 DiagnosticsEngine &Diags);
255 IntrusiveRefCntPtr<llvm::vfs::FileSystem> createVFSFromCompilerInvocation(
256 const CompilerInvocation &CI, DiagnosticsEngine &Diags,
257 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS);
261 #endif // LLVM_CLANG_FRONTEND_COMPILERINVOCATION_H