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//===---------- IncludeInserter.h - clang-tidy ----------------------------===//
//
// 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_INCLUDEINSERTER_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_INCLUDEINSERTER_H
#include "IncludeSorter.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/PPCallbacks.h"
#include <memory>
#include <string>
namespace clang {
namespace tidy {
// IncludeInserter can be used by ClangTidyChecks in the following fashion:
// class MyCheck : public ClangTidyCheck {
// public:
// void registerPPCallbacks(CompilerInstance& Compiler) override {
// Inserter.reset(new IncludeInserter(&Compiler.getSourceManager(),
// &Compiler.getLangOpts()));
// Compiler.getPreprocessor().addPPCallbacks(
// Inserter->CreatePPCallback());
// }
//
// void registerMatchers(ast_matchers::MatchFinder* Finder) override { ... }
//
// void check(const ast_matchers::MatchFinder::MatchResult& Result) override {
// ...
// Inserter->CreateIncludeInsertion(
// Result.SourceManager->getMainFileID(), "path/to/Header.h",
// /*IsAngled=*/false);
// ...
// }
//
// private:
// std::unique_ptr<IncludeInserter> Inserter;
// };
class IncludeInserter {
public:
IncludeInserter(const SourceManager &SourceMgr, const LangOptions &LangOpts,
IncludeSorter::IncludeStyle Style);
~IncludeInserter();
// Create PPCallbacks for registration with the compiler's preprocessor.
std::unique_ptr<PPCallbacks> CreatePPCallbacks();
// Creates a Header inclusion directive fixit. Returns None on error or
// if inclusion directive already exists.
llvm::Optional<FixItHint>
CreateIncludeInsertion(FileID FileID, llvm::StringRef Header, bool IsAngled);
private:
void AddInclude(StringRef file_name, bool IsAngled,
SourceLocation hash_location, SourceLocation end_location);
llvm::DenseMap<FileID, std::unique_ptr<IncludeSorter>> IncludeSorterByFile;
llvm::DenseMap<FileID, std::set<std::string>> InsertedHeaders;
const SourceManager &SourceMgr;
const LangOptions &LangOpts;
const IncludeSorter::IncludeStyle Style;
friend class IncludeInserterCallback;
};
} // namespace tidy
} // namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_INCLUDEINSERTER_H
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