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Olivier Deprezf4ef2d02021-04-20 13:36:24 +02001//===---------- NamespaceAliaser.h - clang-tidy ---------------------------===//
2//
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
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_NAMESPACEALIASER_H
10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_NAMESPACEALIASER_H
11
12#include "clang/AST/ASTContext.h"
13#include "clang/AST/Stmt.h"
14#include "clang/Basic/Diagnostic.h"
15#include "clang/Basic/SourceManager.h"
16#include "llvm/ADT/DenseMap.h"
17#include "llvm/ADT/StringMap.h"
18#include <map>
19
20namespace clang {
21namespace tidy {
22namespace utils {
23
24// This class creates function-level namespace aliases.
25class NamespaceAliaser {
26public:
27 explicit NamespaceAliaser(const SourceManager &SourceMgr);
28 // Adds a namespace alias for \p Namespace valid near \p
29 // Statement. Picks the first available name from \p Abbreviations.
30 // Returns ``llvm::None`` if an alias already exists or there is an error.
31 llvm::Optional<FixItHint>
32 createAlias(ASTContext &Context, const Stmt &Statement,
33 llvm::StringRef Namespace,
34 const std::vector<std::string> &Abbreviations);
35
36 // Get an alias name for \p Namespace valid at \p Statement. Returns \p
37 // Namespace if there is no alias.
38 std::string getNamespaceName(ASTContext &Context, const Stmt &Statement,
39 llvm::StringRef Namespace) const;
40
41private:
42 const SourceManager &SourceMgr;
43 llvm::DenseMap<const FunctionDecl *, llvm::StringMap<std::string>>
44 AddedAliases;
45};
46
47} // namespace utils
48} // namespace tidy
49} // namespace clang
50
51#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_NAMESPACEALIASER_H