1 files changed, 54 insertions, 0 deletions
diff --git a/include/llvm/DebugInfo/GSYM/StringTable.h b/include/llvm/DebugInfo/GSYM/StringTable.h
new file mode 100644
index 000000000000..0001b8b82743
--- /dev/null
+++ b/include/llvm/DebugInfo/GSYM/StringTable.h
@@ -0,0 +1,54 @@
+//===- StringTable.h --------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_GSYM_STRINGTABLE_H
+#define LLVM_DEBUGINFO_GSYM_STRINGTABLE_H
+
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/GSYM/Range.h"
+#include <stdint.h>
+#include <string>
+
+
+namespace llvm {
+namespace gsym {
+
+/// String tables in GSYM files are required to start with an empty
+/// string at offset zero. Strings must be UTF8 NULL terminated strings.
+struct StringTable {
+  StringRef Data;
+  StringTable() : Data() {}
+  StringTable(StringRef D) : Data(D) {}
+  StringRef operator[](size_t Offset) const { return getString(Offset); }
+  StringRef getString(uint32_t Offset) const {
+    if (Offset < Data.size()) {
+      auto End = Data.find('\0', Offset);
+      return Data.substr(Offset, End - Offset);
+    }
+    return StringRef();
+  }
+  void clear() { Data = StringRef(); }
+};
+
+inline raw_ostream &operator<<(raw_ostream &OS, const StringTable &S) {
+  OS << "String table:\n";
+  uint32_t Offset = 0;
+  const size_t Size = S.Data.size();
+  while (Offset < Size) {
+    StringRef Str = S.getString(Offset);
+    OS << HEX32(Offset) << ": \"" << Str << "\"\n";
+    Offset += Str.size() + 1;
+  }
+  return OS;
+}
+
+} // namespace gsym
+} // namespace llvm
+#endif // #ifndef LLVM_DEBUGINFO_GSYM_STRINGTABLE_H