llvm-project/clang-tools-extra/clang-tidy/ClangTidyModule.h

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//===--- ClangTidyModule.h - clang-tidy -------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANG_TIDY_MODULE_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANG_TIDY_MODULE_H
#include "ClangTidy.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include <utility>
namespace clang {
namespace tidy {
/// \brief A factory, that can instantiate a specific clang-tidy check for
/// processing a translation unit.
///
/// In order to register your check with the \c ClangTidyModule, create a
/// subclass of \c CheckFactoryBase and implement \c createCheck(). Then, use
/// this subclass in \c ClangTidyModule::addCheckFactories().
class CheckFactoryBase {
public:
virtual ~CheckFactoryBase() {}
virtual ClangTidyCheck *createCheck() = 0;
};
/// \brief A subclass of \c CheckFactoryBase that should be used for all
/// \c ClangTidyChecks that don't require constructor parameters.
///
/// For example, if have a clang-tidy check like:
/// \code
/// class MyTidyCheck : public ClangTidyCheck {
/// void registerMatchers(ast_matchers::MatchFinder *Finder) override {
/// ..
/// }
/// };
/// \endcode
/// you can register it with:
/// \code
/// class MyModule : public ClangTidyModule {
/// void
/// addCheckFactories(ClangTidyCheckFactories &CheckFactories) override {
/// CheckFactories.addCheckFactory(
/// "myproject-my-check", new ClangTidyCheckFactory<MyTidyCheck>());
/// }
/// };
/// \endcode
template <typename T> class ClangTidyCheckFactory : public CheckFactoryBase {
public:
ClangTidyCheck *createCheck() override { return new T; }
};
class ClangTidyCheckFactories;
/// \brief A clang-tidy module groups a number of \c ClangTidyChecks and gives
/// them a prefixed name.
class ClangTidyModule {
public:
virtual ~ClangTidyModule() {}
/// \brief Implement this function in order to register all \c CheckFactories
/// belonging to this module.
virtual void addCheckFactories(ClangTidyCheckFactories &CheckFactories) = 0;
};
/// \brief A collection of \c ClangTidyCheckFactory instances.
///
/// All clang-tidy modules register their check factories with an instance of
/// this object.
class ClangTidyCheckFactories {
public:
ClangTidyCheckFactories() {}
~ClangTidyCheckFactories();
/// \brief Register \p Factory with the name \p Name.
///
/// The \c ClangTidyCheckFactories object takes ownership of the \p Factory.
void addCheckFactory(StringRef Name, CheckFactoryBase *Factory);
/// \brief Create instances of all checks matching \p CheckRegexString and
/// store them in \p Checks.
///
/// The caller takes ownership of the return \c ClangTidyChecks.
void createChecks(ChecksFilter &Filter,
SmallVectorImpl<ClangTidyCheck *> &Checks);
typedef std::map<std::string, CheckFactoryBase *> FactoryMap;
FactoryMap::const_iterator begin() const { return Factories.begin(); }
FactoryMap::const_iterator end() const { return Factories.end(); }
bool empty() const { return Factories.empty(); }
private:
FactoryMap Factories;
};
} // end namespace tidy
} // end namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANG_TIDY_MODULE_H