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//===---------- UsingInserter.h - clang-tidy ----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H
#include "clang/AST/Decl.h"
#include "clang/AST/Stmt.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/SourceManager.h"
#include <set>
namespace clang {
namespace tidy {
namespace utils {
// UsingInserter adds using declarations for |QualifiedName| to the surrounding
// function.
// This allows using a shorter name without clobbering other scopes.
class UsingInserter {
public:
UsingInserter(const SourceManager &SourceMgr);
// Creates a \p using declaration fixit. Returns ``llvm::None`` on error
// or if the using declaration already exists.
llvm::Optional<FixItHint>
createUsingDeclaration(ASTContext &Context, const Stmt &Statement,
llvm::StringRef QualifiedName);
// Returns the unqualified version of the name if there is an
// appropriate using declaration and the qualified name otherwise.
llvm::StringRef getShortName(ASTContext &Context, const Stmt &Statement,
llvm::StringRef QualifiedName);
private:
typedef std::pair<const FunctionDecl *, std::string> NameInFunction;
const SourceManager &SourceMgr;
std::set<NameInFunction> AddedUsing;
};
} // namespace utils
} // namespace tidy
} // namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H
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