[TextAPI] TBD Reader/Writer

Add basic infrastructure for reading and writting TBD files (version 1 - 3).

The TextAPI library is not used by anything yet (besides the unit tests). Tool
support will be added in a separate commit.

The TBD format is currently documented in the implementation file (TextStub.cpp).

https://reviews.llvm.org/D53945

Update: This contains changes to fix issues discovered by the bots:
 - add parentheses to silence warnings.
 - rename variables
 - use PlatformType from BinaryFormat
llvm-svn: 347823

1 files changed, 51 insertions, 0 deletions

diff --git a/llvm/lib/TextAPI/MachO/Symbol.cpp b/llvm/lib/TextAPI/MachO/Symbol.cpp
new file mode 100644
index 00000000000..717a5b59c43
--- /dev/null
+++ b/llvm/lib/TextAPI/MachO/Symbol.cpp
@@ -0,0 +1,51 @@
+//===- lib/TextAPI/Symbol.cpp - Symbol --------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Implements the Symbol
+///
+//===----------------------------------------------------------------------===//
+
+#include "llvm/TextAPI/MachO/Symbol.h"
+#include <string>
+
+namespace llvm {
+namespace MachO {
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD void Symbol::dump(raw_ostream &OS) const {
+  std::string Result;
+  if (isUndefined())
+    Result += "(undef) ";
+  if (isWeakDefined())
+    Result += "(weak-def) ";
+  if (isWeakReferenced())
+    Result += "(weak-ref) ";
+  if (isThreadLocalValue())
+    Result += "(tlv) ";
+  switch (Kind) {
+  case SymbolKind::GlobalSymbol:
+    Result + Name.str();
+    break;
+  case SymbolKind::ObjectiveCClass:
+    Result + "(ObjC Class) " + Name.str();
+    break;
+  case SymbolKind::ObjectiveCClassEHType:
+    Result + "(ObjC Class EH) " + Name.str();
+    break;
+  case SymbolKind::ObjectiveCInstanceVariable:
+    Result + "(ObjC IVar) " + Name.str();
+    break;
+  }
+  OS << Result;
+}
+#endif
+
+} // end namespace MachO.
+} // end namespace llvm.