[Lexer] Support adding working directory to relative search dir for #include shortening in HeaderSearch.

Reviewers: bkramer

Subscribers: mgorny, hintonda, cfe-commits

Differential Revision: https://reviews.llvm.org/D42577

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@323647 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 1 deletions

diff --git a/include/clang/Lex/HeaderSearch.h b/include/clang/Lex/HeaderSearch.h
index 14a7198475..4e8d9cba70 100644
--- a/include/clang/Lex/HeaderSearch.h
+++ b/include/clang/Lex/HeaderSearch.h
@@ -693,7 +693,7 @@ public:
 
   /// \brief Retrieve a uniqued framework name.
   StringRef getUniqueFrameworkName(StringRef Framework);
-  
+
   /// \brief Suggest a path by which the specified file could be found, for
   /// use in diagnostics to suggest a #include.
   ///
@@ -702,6 +702,15 @@ public:
   std::string suggestPathToFileForDiagnostics(const FileEntry *File,
                                               bool *IsSystem = nullptr);
 
+  /// \brief Suggest a path by which the specified file could be found, for
+  /// use in diagnostics to suggest a #include.
+  ///
+  /// \param WorkingDir If non-empty, this will be prepended to search directory
+  /// paths that are relative.
+  std::string suggestPathToFileForDiagnostics(llvm::StringRef File,
+                                              llvm::StringRef WorkingDir,
+                                              bool *IsSystem = nullptr);
+
   void PrintStats();
   
   size_t getTotalMemory() const;