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//===--- RefactoringAction.h - Clang refactoring library ------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLING_REFACTORING_REFACTORINGACTION_H
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#define LLVM_CLANG_TOOLING_REFACTORING_REFACTORINGACTION_H
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#include "clang/Basic/LLVM.h"
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#include "clang/Tooling/Refactoring/RefactoringActionRules.h"
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#include <vector>
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namespace clang {
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namespace tooling {
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/// A refactoring action is a class that defines a set of related refactoring
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/// action rules. These rules get grouped under a common umbrella - a single
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/// clang-refactor subcommand.
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///
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/// A subclass of \c RefactoringAction is responsible for creating the set of
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/// grouped refactoring action rules that represent one refactoring operation.
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/// Although the rules in one action may have a number of different
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/// implementations, they should strive to produce a similar result. It should
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/// be easy for users to identify which refactoring action produced the result
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/// regardless of which refactoring action rule was used.
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///
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/// The distinction between actions and rules enables the creation of action
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/// that uses very different rules, for example:
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///   - local vs global: a refactoring operation like
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///     "add missing switch cases" can be applied to one switch when it's
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///     selected in an editor, or to all switches in a project when an enum
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///     constant is added to an enum.
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///   - tool vs editor: some refactoring operation can be initiated in the
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///     editor when a declaration is selected, or in a tool when the name of
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///     the declaration is passed using a command-line argument.
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class RefactoringAction {
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public:
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  virtual ~RefactoringAction() {}
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  /// Returns the name of the subcommand that's used by clang-refactor for this
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  /// action.
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  virtual StringRef getCommand() const = 0;
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  virtual StringRef getDescription() const = 0;
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  RefactoringActionRules createActiveActionRules();
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protected:
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  /// Returns a set of refactoring actions rules that are defined by this
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  /// action.
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  virtual RefactoringActionRules createActionRules() const = 0;
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};
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/// Returns the list of all the available refactoring actions.
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std::vector<std::unique_ptr<RefactoringAction>> createRefactoringActions();
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} // end namespace tooling
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} // end namespace clang
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#endif // LLVM_CLANG_TOOLING_REFACTORING_REFACTORINGACTION_H