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diff --git a/clang-tools-extra/clangd/SemanticSelection.h b/clang-tools-extra/clangd/SemanticSelection.h
new file mode 100644
index 00000000000..b0d301e2efb
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+++ b/clang-tools-extra/clangd/SemanticSelection.h
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+//===--- SemanticSelection.h -------------------------------------*- C++-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Features for giving interesting semantic ranges around the cursor.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_SEMANTICSELECTION_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_SEMANTICSELECTION_H
+#include "ParsedAST.h"
+#include "Protocol.h"
+#include "llvm/Support/Error.h"
+#include <vector>
+namespace clang {
+namespace clangd {
+
+/// Returns the list of all interesting ranges around the Position \p Pos.
+/// The interesting ranges corresponds to the AST nodes in the SelectionTree
+/// containing \p Pos.
+/// Any range in the result strictly contains all the previous ranges in the
+/// result. front() is the inner most range. back() is the outermost range.
+llvm::Expected<std::vector<Range>> getSemanticRanges(ParsedAST &AST,
+                                                     Position Pos);
+} // namespace clangd
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANGD_SEMANTICSELECTION_H