1 //===--- RefactoringActionRule.h - Clang refactoring library -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_CLANG_TOOLING_REFACTOR_REFACTORING_ACTION_RULE_H
11 #define LLVM_CLANG_TOOLING_REFACTOR_REFACTORING_ACTION_RULE_H
13 #include "clang/Basic/LLVM.h"
14 #include "llvm/ADT/Optional.h"
15 #include "llvm/ADT/StringRef.h"
21 class RefactoringOptionVisitor;
22 class RefactoringResultConsumer;
23 class RefactoringRuleContext;
25 struct RefactoringDescriptor {
26 /// A unique identifier for the specific refactoring.
28 /// A human readable title for the refactoring.
30 /// A human readable description of what the refactoring does.
31 StringRef Description;
34 /// A common refactoring action rule interface that defines the 'invoke'
35 /// function that performs the refactoring operation (either fully or
37 class RefactoringActionRuleBase {
39 virtual ~RefactoringActionRuleBase() {}
41 /// Initiates and performs a specific refactoring action.
43 /// The specific rule will invoke an appropriate \c handle method on a
44 /// consumer to propagate the result of the refactoring action.
45 virtual void invoke(RefactoringResultConsumer &Consumer,
46 RefactoringRuleContext &Context) = 0;
48 /// Returns the structure that describes the refactoring.
49 // static const RefactoringDescriptor &describe() = 0;
52 /// A refactoring action rule is a wrapper class around a specific refactoring
53 /// action rule (SourceChangeRefactoringRule, etc) that, in addition to invoking
54 /// the action, describes the requirements that determine when the action can be
56 class RefactoringActionRule : public RefactoringActionRuleBase {
58 /// Returns true when the rule has a source selection requirement that has
59 /// to be fulfilled before refactoring can be performed.
60 virtual bool hasSelectionRequirement() = 0;
62 /// Traverses each refactoring option used by the rule and invokes the
63 /// \c visit callback in the consumer for each option.
65 /// Options are visited in the order of use, e.g. if a rule has two
66 /// requirements that use options, the options from the first requirement
67 /// are visited before the options in the second requirement.
68 virtual void visitRefactoringOptions(RefactoringOptionVisitor &Visitor) = 0;
71 } // end namespace tooling
72 } // end namespace clang
74 #endif // LLVM_CLANG_TOOLING_REFACTOR_REFACTORING_ACTION_RULE_H