/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Tooling/Refactoring/RefactoringOptionVisitor.h
Line | Count | Source |
1 | | //===--- RefactoringOptionVisitor.h - Clang refactoring library -----------===// |
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_TOOLING_REFACTORING_REFACTORINGOPTIONVISITOR_H |
10 | | #define LLVM_CLANG_TOOLING_REFACTORING_REFACTORINGOPTIONVISITOR_H |
11 | | |
12 | | #include "clang/Basic/LLVM.h" |
13 | | #include <type_traits> |
14 | | |
15 | | namespace clang { |
16 | | namespace tooling { |
17 | | |
18 | | class RefactoringOption; |
19 | | |
20 | | /// An interface that declares functions that handle different refactoring |
21 | | /// option types. |
22 | | /// |
23 | | /// A valid refactoring option type must have a corresponding \c visit |
24 | | /// declaration in this interface. |
25 | | class RefactoringOptionVisitor { |
26 | | public: |
27 | 87 | virtual ~RefactoringOptionVisitor() {} |
28 | | |
29 | | virtual void visit(const RefactoringOption &Opt, |
30 | | Optional<std::string> &Value) = 0; |
31 | | }; |
32 | | |
33 | | namespace traits { |
34 | | namespace internal { |
35 | | |
36 | | template <typename T> struct HasHandle { |
37 | | private: |
38 | | template <typename ClassT> |
39 | | static auto check(ClassT *) -> typename std::is_same< |
40 | | decltype(std::declval<RefactoringOptionVisitor>().visit( |
41 | | std::declval<RefactoringOption>(), *std::declval<Optional<T> *>())), |
42 | | void>::type; |
43 | | |
44 | | template <typename> static std::false_type check(...); |
45 | | |
46 | | public: |
47 | | using Type = decltype(check<RefactoringOptionVisitor>(nullptr)); |
48 | | }; |
49 | | |
50 | | } // end namespace internal |
51 | | |
52 | | /// A type trait that returns true iff the given type is a type that can be |
53 | | /// stored in a refactoring option. |
54 | | template <typename T> |
55 | | struct IsValidOptionType : internal::HasHandle<T>::Type {}; |
56 | | |
57 | | } // end namespace traits |
58 | | } // end namespace tooling |
59 | | } // end namespace clang |
60 | | |
61 | | #endif // LLVM_CLANG_TOOLING_REFACTORING_REFACTORINGOPTIONVISITOR_H |