1 files changed, 53 insertions, 0 deletions
diff --git a/include/clang/Tooling/Refactoring/Extract/Extract.h b/include/clang/Tooling/Refactoring/Extract/Extract.h
new file mode 100644
index 000000000000..2fd76d252c62
--- /dev/null
+++ b/include/clang/Tooling/Refactoring/Extract/Extract.h
@@ -0,0 +1,53 @@
+//===--- Extract.h - Clang refactoring library ----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLING_REFACTOR_EXTRACT_EXTRACT_H
+#define LLVM_CLANG_TOOLING_REFACTOR_EXTRACT_EXTRACT_H
+
+#include "clang/Tooling/Refactoring/ASTSelection.h"
+#include "clang/Tooling/Refactoring/RefactoringActionRules.h"
+
+namespace clang {
+namespace tooling {
+
+/// An "Extract Function" refactoring moves code into a new function that's
+/// then called from the place where the original code was.
+class ExtractFunction final : public SourceChangeRefactoringRule {
+public:
+  /// Initiates the extract function refactoring operation.
+  ///
+  /// \param Code     The selected set of statements.
+  /// \param DeclName The name name of the extract function. If None,
+  ///                 "extracted" is used.
+  static Expected<ExtractFunction> initiate(RefactoringRuleContext &Context,
+                                            CodeRangeASTSelection Code,
+                                            Optional<std::string> DeclName);
+
+  static const RefactoringDescriptor &describe();
+
+private:
+  ExtractFunction(CodeRangeASTSelection Code, Optional<std::string> DeclName)
+      : Code(std::move(Code)),
+        DeclName(DeclName ? std::move(*DeclName) : "extracted") {}
+
+  Expected<AtomicChanges>
+  createSourceReplacements(RefactoringRuleContext &Context) override;
+
+  CodeRangeASTSelection Code;
+
+  // FIXME: Account for naming collisions:
+  //  - error when name is specified by user.
+  //  - rename to "extractedN" when name is implicit.
+  std::string DeclName;
+};
+
+} // end namespace tooling
+} // end namespace clang
+
+#endif // LLVM_CLANG_TOOLING_REFACTOR_EXTRACT_EXTRACT_H