1 files changed, 51 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/CodeView/StreamReader.cpp b/llvm/lib/DebugInfo/CodeView/StreamReader.cpp
new file mode 100644
index 00000000000..8a2926bc883
--- /dev/null
+++ b/llvm/lib/DebugInfo/CodeView/StreamReader.cpp
@@ -0,0 +1,51 @@
+//===- StreamReader.cpp - Reads bytes and objects from a stream -----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/CodeView/StreamReader.h"
+
+#include "llvm/DebugInfo/CodeView/CodeViewError.h"
+
+using namespace llvm;
+using namespace llvm::codeview;
+
+StreamReader::StreamReader(const StreamInterface &S) : Stream(S), Offset(0) {}
+
+Error StreamReader::readBytes(MutableArrayRef<uint8_t> Buffer) {
+  if (auto EC = Stream.readBytes(Offset, Buffer))
+    return EC;
+  Offset += Buffer.size();
+  return Error::success();
+}
+
+Error StreamReader::readInteger(uint32_t &Dest) {
+  support::ulittle32_t P;
+  if (auto EC = readObject(&P))
+    return EC;
+  Dest = P;
+  return Error::success();
+}
+
+Error StreamReader::readZeroString(std::string &Dest) {
+  Dest.clear();
+  char C;
+  do {
+    if (auto EC = readObject(&C))
+      return EC;
+    if (C != '\0')
+      Dest.push_back(C);
+  } while (C != '\0');
+  return Error::success();
+}
+
+Error StreamReader::getArrayRef(ArrayRef<uint8_t> &Array, uint32_t Length) {
+  if (auto EC = Stream.getArrayRef(Offset, Array, Length))
+    return EC;
+  Offset += Length;
+  return Error::success();
+}