clang-tools  17.0.0git
UsingInserter.h
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1 //===---------- UsingInserter.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_USINGINSERTER_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H
11 
12 #include "clang/AST/Decl.h"
13 #include "clang/AST/Stmt.h"
14 #include "clang/Basic/Diagnostic.h"
15 #include "clang/Basic/SourceManager.h"
16 #include <optional>
17 #include <set>
18 
19 namespace clang::tidy::utils {
20 
21 // UsingInserter adds using declarations for |QualifiedName| to the surrounding
22 // function.
23 // This allows using a shorter name without clobbering other scopes.
25 public:
26  UsingInserter(const SourceManager &SourceMgr);
27 
28  // Creates a \p using declaration fixit. Returns ``std::nullopt`` on error
29  // or if the using declaration already exists.
30  std::optional<FixItHint>
31  createUsingDeclaration(ASTContext &Context, const Stmt &Statement,
32  llvm::StringRef QualifiedName);
33 
34  // Returns the unqualified version of the name if there is an
35  // appropriate using declaration and the qualified name otherwise.
36  llvm::StringRef getShortName(ASTContext &Context, const Stmt &Statement,
37  llvm::StringRef QualifiedName);
38 
39 private:
40  typedef std::pair<const FunctionDecl *, std::string> NameInFunction;
41  const SourceManager &SourceMgr;
42  std::set<NameInFunction> AddedUsing;
43 };
44 
45 } // namespace clang::tidy::utils
46 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_USINGINSERTER_H
clang::tidy::utils::UsingInserter::createUsingDeclaration
std::optional< FixItHint > createUsingDeclaration(ASTContext &Context, const Stmt &Statement, llvm::StringRef QualifiedName)
Definition: UsingInserter.cpp:31
clang::tidy::utils::UsingInserter::UsingInserter
UsingInserter(const SourceManager &SourceMgr)
Definition: UsingInserter.cpp:28
clang::tidy::utils::UsingInserter::getShortName
llvm::StringRef getShortName(ASTContext &Context, const Stmt &Statement, llvm::StringRef QualifiedName)
Definition: UsingInserter.cpp:76
clang::tidy::utils
Definition: Aliasing.cpp:14
clang::tidy::utils::UsingInserter
Definition: UsingInserter.h:24