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diff --git a/include/lldb/Utility/TildeExpressionResolver.h b/include/lldb/Utility/TildeExpressionResolver.h
new file mode 100644
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+++ b/include/lldb/Utility/TildeExpressionResolver.h
@@ -0,0 +1,65 @@
+//===--------------------- TildeExpressionResolver.h ------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_UTILITY_TILDE_EXPRESSION_RESOLVER_H
+#define LLDB_UTILITY_TILDE_EXPRESSION_RESOLVER_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSet.h"
+
+namespace llvm {
+template <typename T> class SmallVectorImpl;
+}
+
+namespace lldb_private {
+class TildeExpressionResolver {
+public:
+  virtual ~TildeExpressionResolver();
+
+  /// \brief Resolve a Tilde Expression contained according to bash rules.
+  ///
+  /// \param Expr Contains the tilde expression to resolve.  A valid tilde
+  ///             expression must begin with a tilde and contain only non
+  ///             separator characters.
+  ///
+  /// \param Output Contains the resolved tilde expression, or the original
+  ///               input if the tilde expression could not be resolved.
+  ///
+  /// \returns true if \p Expr was successfully resolved, false otherwise.
+  virtual bool ResolveExact(llvm::StringRef Expr,
+                            llvm::SmallVectorImpl<char> &Output) = 0;
+
+  /// \brief Auto-complete a tilde expression with all matching values.
+  ///
+  /// \param Expr Contains the tilde expression prefix to resolve.  See
+  ///             ResolveExact() for validity rules.
+  ///
+  /// \param Output Contains all matching home directories, each one
+  ///               itself unresolved (i.e. you need to call ResolveExact
+  ///               on each item to turn it into a real path).
+  ///
+  /// \returns true if there were any matches, false otherwise.
+  virtual bool ResolvePartial(llvm::StringRef Expr,
+                              llvm::StringSet<> &Output) = 0;
+
+  /// \brief Resolve an entire path that begins with a tilde expression,
+  /// replacing the username portion with the matched result.
+  bool ResolveFullPath(llvm::StringRef Expr,
+                       llvm::SmallVectorImpl<char> &Output);
+};
+
+class StandardTildeExpressionResolver : public TildeExpressionResolver {
+public:
+  bool ResolveExact(llvm::StringRef Expr,
+                    llvm::SmallVectorImpl<char> &Output) override;
+  bool ResolvePartial(llvm::StringRef Expr, llvm::StringSet<> &Output) override;
+};
+}
+
+#endif // #ifndef LLDB_UTILITY_TILDE_EXPRESSION_RESOLVER_H