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Diffstat (limited to 'include/clang/Tooling/Tooling.h')
| -rw-r--r-- | include/clang/Tooling/Tooling.h | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/include/clang/Tooling/Tooling.h b/include/clang/Tooling/Tooling.h new file mode 100644 index 0000000000..868eae3068 --- /dev/null +++ b/include/clang/Tooling/Tooling.h @@ -0,0 +1,213 @@ +//===--- Tooling.h - Framework for standalone Clang tools -------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements functions to run clang tools standalone instead +// of running them as a plugin. +// +// A ClangTool is initialized with a CompilationDatabase and a set of files +// to run over. The tool will then run a user-specified FrontendAction over +// all TUs in which the given files are compiled. +// +// It is also possible to run a FrontendAction over a snippet of code by +// calling runSyntaxOnlyToolOnCode, which is useful for unit testing. +// +// Applications that need more fine grained control over how to run +// multiple FrontendActions over code can use ToolInvocation. +// +// Example tools: +// - running clang -fsyntax-only over source code from an editor to get +// fast syntax checks +// - running match/replace tools over C++ code +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_TOOLING_TOOLING_H +#define LLVM_CLANG_TOOLING_TOOLING_H + +#include "llvm/ADT/StringMap.h" +#include "llvm/ADT/Twine.h" +#include "clang/Basic/FileManager.h" +#include "clang/Basic/LLVM.h" +#include "clang/Driver/Util.h" +#include <string> +#include <vector> + +namespace clang { + +namespace driver { +class Compilation; +} // end namespace driver + +class CompilerInvocation; +class SourceManager; +class FrontendAction; + +namespace tooling { + +class CompilationDatabase; + +/// \brief Interface to generate clang::FrontendActions. +class FrontendActionFactory { +public: + virtual ~FrontendActionFactory(); + + /// \brief Returns a new clang::FrontendAction. + /// + /// The caller takes ownership of the returned action. + virtual clang::FrontendAction *create() = 0; +}; + +/// \brief Returns a new FrontendActionFactory for a given type. +/// +/// T must extend clang::FrontendAction. +/// +/// Example: +/// FrontendActionFactory *Factory = +/// newFrontendActionFactory<clang::SyntaxOnlyAction>(); +template <typename T> +FrontendActionFactory *newFrontendActionFactory(); + +/// \brief Returns a new FrontendActionFactory for any type that provides an +/// implementation of newFrontendAction(). +/// +/// FactoryT must implement: FrontendAction *newFrontendAction(). +/// +/// Example: +/// struct ProvidesFrontendActions { +/// FrontendAction *newFrontendAction(); +/// } Factory; +/// FrontendActionFactory *FactoryAdapter = +/// newFrontendActionFactory(&Factory); +template <typename FactoryT> +FrontendActionFactory *newFrontendActionFactory(FactoryT *ActionFactory); + +/// \brief Runs (and deletes) the tool on 'Code' with the -fsyntax-only flag. +/// +/// \param ToolAction The action to run over the code. +/// \param Code C++ code. +/// \param FileName The file name which 'Code' will be mapped as. +/// +/// \return - True if 'ToolAction' was successfully executed. +bool runToolOnCode(clang::FrontendAction *ToolAction, const Twine &Code, + const Twine &FileName = "input.cc"); + +/// \brief Utility to run a FrontendAction in a single clang invocation. +class ToolInvocation { + public: + /// \brief Create a tool invocation. + /// + /// \param CommandLine The command line arguments to clang. + /// \param ToolAction The action to be executed. Class takes ownership. + /// \param Files The FileManager used for the execution. Class does not take + /// ownership. + ToolInvocation(ArrayRef<std::string> CommandLine, FrontendAction *ToolAction, + FileManager *Files); + + /// \brief Map a virtual file to be used while running the tool. + /// + /// \param FilePath The path at which the content will be mapped. + /// \param Content A null terminated buffer of the file's content. + void mapVirtualFile(StringRef FilePath, StringRef Content); + + /// \brief Run the clang invocation. + /// + /// \returns True if there were no errors during execution. + bool run(); + + private: + void addFileMappingsTo(SourceManager &SourceManager); + + bool runInvocation(const char *BinaryName, + clang::driver::Compilation *Compilation, + clang::CompilerInvocation *Invocation, + const clang::driver::ArgStringList &CC1Args, + clang::FrontendAction *ToolAction); + + std::vector<std::string> CommandLine; + llvm::OwningPtr<FrontendAction> ToolAction; + FileManager *Files; + // Maps <file name> -> <file content>. + llvm::StringMap<StringRef> MappedFileContents; +}; + +/// \brief Utility to run a FrontendAction over a set of files. +/// +/// This class is written to be usable for command line utilities. +class ClangTool { + public: + /// \brief Constructs a clang tool to run over a list of files. + /// + /// \param Compilations The CompilationDatabase which contains the compile + /// command lines for the given source paths. + /// \param SourcePaths The source files to run over. If a source files is + /// not found in Compilations, it is skipped. + ClangTool(const CompilationDatabase &Compilations, + ArrayRef<std::string> SourcePaths); + + /// \brief Map a virtual file to be used while running the tool. + /// + /// \param FilePath The path at which the content will be mapped. + /// \param Content A null terminated buffer of the file's content. + void mapVirtualFile(StringRef FilePath, StringRef Content); + + /// Runs a frontend action over all files specified in the command line. + /// + /// \param ActionFactory Factory generating the frontend actions. The function + /// takes ownership of this parameter. A new action is generated for every + /// processed translation unit. + int run(FrontendActionFactory *ActionFactory); + + /// \brief Returns the file manager used in the tool. + /// + /// The file manager is shared between all translation units. + FileManager &getFiles() { return Files; } + + private: + // We store command lines as pair (file name, command line). + typedef std::pair< std::string, std::vector<std::string> > CommandLine; + std::vector<CommandLine> CommandLines; + + FileManager Files; + // Contains a list of pairs (<file name>, <file content>). + std::vector< std::pair<StringRef, StringRef> > MappedFileContents; +}; + +template <typename T> +FrontendActionFactory *newFrontendActionFactory() { + class SimpleFrontendActionFactory : public FrontendActionFactory { + public: + virtual clang::FrontendAction *create() { return new T; } + }; + + return new SimpleFrontendActionFactory; +} + +template <typename FactoryT> +FrontendActionFactory *newFrontendActionFactory(FactoryT *ActionFactory) { + class FrontendActionFactoryAdapter : public FrontendActionFactory { + public: + explicit FrontendActionFactoryAdapter(FactoryT *ActionFactory) + : ActionFactory(ActionFactory) {} + + virtual clang::FrontendAction *create() { + return ActionFactory->newFrontendAction(); + } + + private: + FactoryT *ActionFactory; + }; + + return new FrontendActionFactoryAdapter(ActionFactory); +} + +} // end namespace tooling +} // end namespace clang + +#endif // LLVM_CLANG_TOOLING_TOOLING_H + |