1 //===--- RefactoringOptions.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_REFACTOR_REFACTORING_OPTIONS_H
10 #define LLVM_CLANG_TOOLING_REFACTOR_REFACTORING_OPTIONS_H
11 
12 #include "clang/Basic/LLVM.h"
13 #include "clang/Tooling/Refactoring/RefactoringActionRuleRequirements.h"
14 #include "clang/Tooling/Refactoring/RefactoringOption.h"
15 #include "clang/Tooling/Refactoring/RefactoringOptionVisitor.h"
16 #include "llvm/Support/Error.h"
17 #include <type_traits>
18 
19 namespace clang {
20 namespace tooling {
21 
22 /// A refactoring option that stores a value of type \c T.
23 template <typename T,
24           typename = std::enable_if_t<traits::IsValidOptionType<T>::value>>
25 class OptionalRefactoringOption : public RefactoringOption {
26 public:
passToVisitor(RefactoringOptionVisitor & Visitor)27   void passToVisitor(RefactoringOptionVisitor &Visitor) final override {
28     Visitor.visit(*this, Value);
29   }
30 
isRequired()31   bool isRequired() const override { return false; }
32 
33   using ValueType = Optional<T>;
34 
getValue()35   const ValueType &getValue() const { return Value; }
36 
37 protected:
38   Optional<T> Value;
39 };
40 
41 /// A required refactoring option that stores a value of type \c T.
42 template <typename T,
43           typename = std::enable_if_t<traits::IsValidOptionType<T>::value>>
44 class RequiredRefactoringOption : public OptionalRefactoringOption<T> {
45 public:
46   using ValueType = T;
47 
getValue()48   const ValueType &getValue() const {
49     return *OptionalRefactoringOption<T>::Value;
50   }
isRequired()51   bool isRequired() const final override { return true; }
52 };
53 
54 } // end namespace tooling
55 } // end namespace clang
56 
57 #endif // LLVM_CLANG_TOOLING_REFACTOR_REFACTORING_OPTIONS_H
58