vendor/llvm/llvm-trunk-r302069

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/Support/BinaryStreamReader.cpp b/lib/Support/BinaryStreamReader.cpp
index c7a2e0ddb179..702d98770e05 100644
--- a/lib/Support/BinaryStreamReader.cpp
+++ b/lib/Support/BinaryStreamReader.cpp
@@ -93,3 +93,16 @@ uint8_t BinaryStreamReader::peek() const {
   llvm::consumeError(std::move(EC));
   return Buffer[0];
 }
+
+std::pair<BinaryStreamReader, BinaryStreamReader>
+BinaryStreamReader::split(uint32_t Off) const {
+  assert(getLength() >= Off);
+
+  BinaryStreamRef First = Stream.drop_front(Offset);
+
+  BinaryStreamRef Second = First.drop_front(Off);
+  First = First.keep_front(Off);
+  BinaryStreamReader W1{First};
+  BinaryStreamReader W2{Second};
+  return std::make_pair(W1, W2);
+}
\ No newline at end of file