From baf3c77bd9f6baf60a09ef3625fef84080642b72 Mon Sep 17 00:00:00 2001
From: Jan Korous <jkorous@apple.com>
Date: Wed, 2 Sep 2020 13:11:35 -0700
Subject: [PATCH] [libclang] Add translateCXRangeToCharRange conversion

Add new conversion with clearly specified semantics.

https://reviews.llvm.org/D86990
---
 clang/tools/libclang/CIndex.cpp         | 6 ++++++
 clang/tools/libclang/CXSourceLocation.h | 6 +++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index 93f9797a965e..683b517d79fd 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -164,6 +164,12 @@ CXSourceRange cxloc::translateSourceRange(const SourceManager &SM,
   return Result;
 }
 
+CharSourceRange cxloc::translateCXRangeToCharRange(CXSourceRange R) {
+  return CharSourceRange::getCharRange(
+      SourceLocation::getFromRawEncoding(R.begin_int_data),
+      SourceLocation::getFromRawEncoding(R.end_int_data));
+}
+
 //===----------------------------------------------------------------------===//
 // Cursor visitor.
 //===----------------------------------------------------------------------===//
diff --git a/clang/tools/libclang/CXSourceLocation.h b/clang/tools/libclang/CXSourceLocation.h
index 6702d0cf9791..ce3d09e1c9eb 100644
--- a/clang/tools/libclang/CXSourceLocation.h
+++ b/clang/tools/libclang/CXSourceLocation.h
@@ -71,7 +71,11 @@ static inline SourceRange translateCXSourceRange(CXSourceRange R) {
                      SourceLocation::getFromRawEncoding(R.end_int_data));
 }
 
-
+/// Translates CXSourceRange to CharSourceRange.
+/// The semantics of \p R are:
+/// R.begin_int_data is first character of the range.
+/// R.end_int_data is one character past the end of the range.
+CharSourceRange translateCXRangeToCharRange(CXSourceRange R);
 }} // end namespace: clang::cxloc
 
 #endif