1//===---------- 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#include <optional>
20
21namespace clang::tidy::utils {
22
23// This class creates function-level namespace aliases.
24class NamespaceAliaser {
25public:
26 explicit NamespaceAliaser(const SourceManager &SourceMgr);
27 // Adds a namespace alias for \p Namespace valid near \p
28 // Statement. Picks the first available name from \p Abbreviations.
29 // Returns ``std::nullopt`` if an alias already exists or there is an error.
30 std::optional<FixItHint>
31 createAlias(ASTContext &Context, const Stmt &Statement,
32 llvm::StringRef Namespace,
33 const std::vector<std::string> &Abbreviations);
34
35 // Get an alias name for \p Namespace valid at \p Statement. Returns \p
36 // Namespace if there is no alias.
37 std::string getNamespaceName(ASTContext &Context, const Stmt &Statement,
38 llvm::StringRef Namespace) const;
39
40private:
41 const SourceManager &SourceMgr;
42 llvm::DenseMap<const FunctionDecl *, llvm::StringMap<std::string>>
43 AddedAliases;
44};
45
46} // namespace clang::tidy::utils
47
48#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_NAMESPACEALIASER_H
49

source code of clang-tools-extra/clang-tidy/utils/NamespaceAliaser.h